Today's Message Index:
----------------------
1. 03:56 AM - Re: SNF (Jack)
2. 04:30 AM - Almost done (Dangerous Dave)
3. 04:32 AM - Torque Control Tube Location (Jack)
4. 04:51 AM - Re: Visit to John McPherson (Don Emch)
5. 05:04 AM - Re: wings (Don Emch)
6. 05:33 AM - Re: Re: Visit to John McPherson (Gboothe5)
7. 06:11 AM - Re: Re: wings (Charles Campbell)
8. 06:12 AM - Re: Re: wings (Dan Yocum)
9. 07:12 AM - Re: Re: wings (Robert Gow)
10. 07:14 AM - Re: Re: wings (Doug Dever)
11. 07:20 AM - Re: Re: wings (Charles Campbell)
12. 07:32 AM - Re: Re: wings (Tim White)
13. 07:35 AM - Re: Re: wings (Ryan Mueller)
14. 07:49 AM - Re: wings (Bill Church)
15. 08:03 AM - Re: Re: wings (Kip and Beth Gardner)
16. 08:14 AM - Re: Torque Control Tube Location (kevinpurtee)
17. 09:14 AM - Re: Re: wings (Richard Schreiber)
18. 09:15 AM - Re: Torque Control Tube Location (Gboothe5)
19. 10:04 AM - Re: Re: wings (Ken Bickers)
20. 10:05 AM - Re: Re: wings (Ken Bickers)
21. 10:05 AM - Re: Re: wings (Gboothe5)
22. 10:06 AM - Re: Re: wings (Richard Schreiber)
23. 10:12 AM - Re: Re: Torque Control Tube Location (Jack)
24. 10:29 AM - Re: Re: Torque Control Tube Location (Jack)
25. 11:08 AM - Re: Torque Control Tube Location (kevinpurtee)
26. 11:13 AM - Re: Re: wings (Richard Schreiber)
27. 11:15 AM - Re: Re: Torque Control Tube Location (Gboothe5)
28. 11:16 AM - Re: Re: Torque Control Tube Location (Gboothe5)
29. 11:17 AM - Re: Re: wings (Charles Campbell)
30. 11:21 AM - Re: Re: Rounded Seat for Delrin Needle, Stromberg Carb, Conti... (SENTUCHOWS@aol.com)
31. 11:22 AM - Re: Re: wings (Charles Campbell)
32. 11:28 AM - Re: Re: wings (Charles Campbell)
33. 12:32 PM - Re: Progress (Jim Boyer)
34. 12:37 PM - Re: Re: Torque Control Tube Location (Gboothe5)
35. 12:39 PM - Re: Progress (Jim Boyer)
36. 12:55 PM - Re: wings (Don Emch)
37. 01:01 PM - Re: Almost done (Rick Holland)
38. 01:17 PM - Re: Re: wings (Gboothe5)
39. 01:24 PM - Re: Re: wings (Charles Campbell)
40. 01:25 PM - Re: Re: wings (Charles Campbell)
41. 01:28 PM - Re: Re: wings (Charles Campbell)
42. 01:34 PM - Re: wings (jarheadpilot82)
43. 02:01 PM - Re: Progress (Charles Campbell)
44. 02:02 PM - Re: Progress (Charles Campbell)
45. 02:03 PM - Re: Progress (Charles Campbell)
46. 02:04 PM - Re: Re: wings (Ryan Mueller)
47. 02:04 PM - Re: Re: wings (Robert Gow)
48. 02:33 PM - Re: Re: wings (Charles Campbell)
49. 02:33 PM - Re: Re: wings (Charles Campbell)
50. 02:47 PM - Re: Re: wings (Richard Schreiber)
51. 03:03 PM - Re: wings (Don Emch)
52. 04:09 PM - Re: Re: wings (shad bell)
53. 05:13 PM - Re: Sun'n'Fun favor (Dick N)
54. 05:34 PM - Re: Re: wings (Michael Perez)
55. 05:59 PM - Re: Re: Re: Torque Control Tube Location (Jack)
56. 06:31 PM - Re: Re: wings (Charles Campbell)
57. 07:26 PM - Re: Re: wings (Jack Phillips)
58. 08:03 PM - Re: Re: wings (Jack Phillips)
59. 08:06 PM - Re: Re: wings (Chuck Weyant)
60. 09:14 PM - Re: Almost done (Chris)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Dick,
Wish I were there. I commend you for all your hard work that benefits so
many!
Jack
Do not archive
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Dick N
Sent: Sunday, March 27, 2011 7:45 PM
Subject: Pietenpol-List: SNF
Hey all
I'm at SNF with Skip Gadd Dave Aldrich, Randy Henderson and a couple others
. There are 4 Piets here so far. We are going to be building a Piet
Fuselage at the show, I hope you all will stop by and watch or help. This
one is going to be a quick build, so come by early on. I'll post a pic or 2
later.
Dick N.
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Not much more to do,should be done here shortly,dave
--------
Covering Piet
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335240#335240
Attachments:
http://forums.matronics.com//files/2011_03_27_07_55_54_338_459.jpg
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Torque Control Tube Location |
Ready to mount my control assembly. Considering the angle the aileron
cables pass through the slot in the panel base up to the center section
pulleys. I'm just guessing my wing will be 4 inches aft of perpendicular.
(Is this average for a long fuselage, C-85, split gear, heavier than average
tail) Can someone help with the calculation of how far the aileron control
horn needs to be forward of the slot in the panel base? Assuming a rise of
approximately 46" (horn to slot 22" and slot to c-section 24") and wing aft
4" equals having the horn 4" forward the slot?? Not sure I have that much
room.
Thanks!!
Jack
DSM
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Visit to John McPherson |
Those are the unshielded mags, right? I'll have to stop by the hangar later and
check on the p-leads on mine.
Don Emch
NX899DE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335241#335241
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Chuck,
Please take these comments as positive, caring, criticism. The way the pictures
look the spars do not meet the wood specs that are called for. We do have the
liberty to build what we want and basically how we want, but those specs have
been called out for a reason. Please check them over. I've built several
spars for several airplanes and this is an area that you clearly don't want to
use sub par materials. The really cool thing right now is that there doesn't
seem to be a shortage of excellent spar quality spruce wood. Probably about
$800 will get you excellent spar material from one of the top aircraft suppliers
and you'll have it in about 2 weeks. Pretty good for the most important structural
part of the airplane.
Don Emch
NX899DE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335243#335243
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Visit to John McPherson |
Thanks, Don. I think he said those mags were given to him...I doubt if he
knows they are unshielded...
Gary
Do not archive
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Don Emch
Sent: Monday, March 28, 2011 4:28 AM
Subject: Pietenpol-List: Re: Visit to John McPherson
Those are the unshielded mags, right? I'll have to stop by the hangar later
and check on the p-leads on mine.
Don Emch
NX899DE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335241#335241
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I mean, if I were building a 300-HP, 300-MPH airplane this would be a
concern. The plane I'm building will probably never get to 100 MPH and
will probably never see more than 1.5 - 2.0 Gs. Give me a break!
----- Original Message -----
From: Ryan Mueller
To: pietenpol-list@matronics.com
Sent: Sunday, March 27, 2011 8:38 PM
Subject: Re: Pietenpol-List: Re: wings
Excellent attitude...
On Sun, Mar 27, 2011 at 6:57 PM, Charles Campbell
<cncampbell@windstream.net> wrote:
<cncampbell@windstream.net>
Don't worry about it -- I don't.
----- Original Message ----- From: "womenfly2"
<keriannprice@hotmail.com>
To: <pietenpol-list@matronics.com>
Sent: Sunday, March 27, 2011 6:25 PM
Subject: Pietenpol-List: Re: wings
<keriannprice@hotmail.com>
Your wing spars really worry me. Seriously.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335203#335203
==========
st"
target="_blank">http://www.matronics.com/Navigator?Pietenpol-List
==========
http://forums.matronics.com
==========
le, List Admin.
="_blank">http://www.matronics.com/contribution
==========
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Chuck,
I'm going to echo everyone's call to re-evaluate your spar material. We
don't want you to get hurt or your airplane to get bent.
You may be right, your spars may hold up for many hours of flight time.
Heck, the airplane may survive you. But, how horrible would you feel
if the next owner lost his or her life because your choice of sub-par
materials?
It has happened before - I've referenced a similar incident on the list
in the past.
We really wish you the best. Please reconsider your choice of materials.
Cheers,
Dan
On 03/27/2011 06:57 PM, Charles Campbell wrote:
> <cncampbell@windstream.net>
>
> Don't worry about it -- I don't.
>
> ----- Original Message ----- From: "womenfly2" <keriannprice@hotmail.com>
> To: <pietenpol-list@matronics.com>
> Sent: Sunday, March 27, 2011 6:25 PM
> Subject: Pietenpol-List: Re: wings
>
>
>> <keriannprice@hotmail.com>
>>
>> Your wing spars really worry me. Seriously.
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=335203#335203
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
--
Dan Yocum
Fermilab 630.840.6509
yocum@fnal.gov, http://fermigrid.fnal.gov
"I fly because it releases my mind from the tyranny of petty things."
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
You should consider 4.5 Gs positive and 1.5 Gs negative when designing a
nonaerobatic aircraft.
Bob
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Charles
Campbell
Sent: March 28, 2011 8:45 AM
Subject: Re: Pietenpol-List: Re: wings
I mean, if I were building a 300-HP, 300-MPH airplane this would be a
concern. The plane I'm building will probably never get to 100 MPH and
will probably never see more than 1.5 - 2.0 Gs. Give me a break!
----- Original Message -----
From: Ryan Mueller <mailto:rmueller23@gmail.com>
Sent: Sunday, March 27, 2011 8:38 PM
Subject: Re: Pietenpol-List: Re: wings
Excellent attitude...
On Sun, Mar 27, 2011 at 6:57 PM, Charles Campbell
<cncampbell@windstream.net> wrote:
<cncampbell@windstream.net>
Don't worry about it -- I don't.
----- Original Message ----- From: "womenfly2" <keriannprice@hotmail.com>
Sent: Sunday, March 27, 2011 6:25 PM
Subject: Pietenpol-List: Re: wings
<keriannprice@hotmail.com>
Your wing spars really worry me. Seriously.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335203#335203
==========
st" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List
==========
http://forums.matronics.com
==========
le, List Admin.
="_blank">http://www.matronics.com/contribution
==========
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matron
ics.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
And it was designed with these parameters in mind. If you use sub par mate
rials you are reducing the safety factors. If it was designed with 300mph
and 6+ -Gs in mind and you are operating at 100mph and 3.5+ 1.5- then that
would be a different story.
Doug Dever
In beautiful Stow Ohio
From: cncampbell@windstream.net
Subject: Re: Pietenpol-List: Re: wings
I mean=2C if I were building a 300-HP=2C 300-MPH airplane this would be a c
oncern. The plane I'm building will probably never get to 100 MPH and will
probably never see more than 1.5 - 2.0 Gs. Give me a break!
----- Original Message -----
From: Ryan Mueller
Sent: Sunday=2C March 27=2C 2011 8:38 PM
Subject: Re: Pietenpol-List: Re: wings
Excellent attitude...
On Sun=2C Mar 27=2C 2011 at 6:57 PM=2C Charles Campbell <cncampbell@windstr
eam.net> wrote:
ream.net>
Don't worry about it -- I don't.
----- Original Message ----- From: "womenfly2" <keriannprice@hotmail.com>
Sent: Sunday=2C March 27=2C 2011 6:25 PM
Subject: Pietenpol-List: Re: wings
>
Your wing spars really worry me. Seriously.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335203#335203
st" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
le=2C List Admin.
="_blank">http://www.matronics.com/contribution
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matro
nics.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Norm, here's the thing. I have epoxy glued 14 ribs to those spars. I
don't want to tear that whole thing up if I don't have to. This 'dar'
you mentioned, how can I find out who he/she is for my area and do you
think he/she would be willing to come look at the wing to see if I
REALLY need to tear it up? I'm satisfied that for what the airplane
will be asked to do that it would be perfectly safe. But, as you say,
it would be a shame to get the thing finished and then not be able to
get it licensed. I would appreciate your ideas. Chuck
----- Original Message -----
From: norm
To: pietenpol-list@matronics.com
Sent: Sunday, March 27, 2011 9:06 PM
Subject: Re: Pietenpol-List: Re: wings
I too think you should get some local help on selecting your spar
quality ,
perhaps an eaa chapter ,, or fellow builder or ? It would be a shame
if your dar fails it after all your hard work , please accept this as
friendly criticism regards norm
-------------------------------------------------------------------------
-----
From: womenfly2 <keriannprice@hotmail.com>
To: pietenpol-list@matronics.com
Sent: Sun, March 27, 2011 6:25:29 PM
Subject: Pietenpol-List: Re: wings
<keriannprice@hotmail.com>
Your wing spars really worry me. Seriously.
Read this topic online here:
http://forums.matronics.cnbsp;
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Its coming
From: cncampbell@windstream.net
Subject: Re: Pietenpol-List: Re: wings
I mean=2C if I were building a 300-HP=2C 300-MPH airplane this would be a c
oncern. The plane I'm building will probably never get to 100 MPH and will
probably never see more than 1.5 - 2.0 Gs. Give me a break!
----- Original Message -----
From: Ryan Mueller
Sent: Sunday=2C March 27=2C 2011 8:38 PM
Subject: Re: Pietenpol-List: Re: wings
Excellent attitude...
On Sun=2C Mar 27=2C 2011 at 6:57 PM=2C Charles Campbell <cncampbell@windstr
eam.net> wrote:
ream.net>
Don't worry about it -- I don't.
----- Original Message ----- From: "womenfly2" <keriannprice@hotmail.com>
Sent: Sunday=2C March 27=2C 2011 6:25 PM
Subject: Pietenpol-List: Re: wings
>
Your wing spars really worry me. Seriously.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335203#335203
st" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
le=2C List Admin.
="_blank">http://www.matronics.com/contribution
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matro
nics.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
That's cool. After reviewing the material again I did miss the footnote that
said:
"Minimum standards for acceptable wood for aircraft use do not apply to
aircraft making less than 300 horsepower, with a VNE less than 300 miles per
hour, or one which will most likely be unable to achieve an airspeed of 100
miles per hour or experience stresses any greater than 2.0 G. In such cases
the builder shall also display, in addition to and viewable alongside the
EXPERIMENTAL placard, a placard stating "DON'T WORRY ABOUT IT, I DON'T".....
do not archive
On Mon, Mar 28, 2011 at 7:44 AM, Charles Campbell <cncampbell@windstream.net
> wrote:
> I mean, if I were building a 300-HP, 300-MPH airplane this would be a
> concern. The plane I'm building will probably never get to 100 MPH and will
> probably never see more than 1.5 - 2.0 Gs. Give me a break!
>
> ----- Original Message -----
> *From:* Ryan Mueller <rmueller23@gmail.com>
> *To:* pietenpol-list@matronics.com
> *Sent:* Sunday, March 27, 2011 8:38 PM
> *Subject:* Re: Pietenpol-List: Re: wings
>
> Excellent attitude...
>
> On Sun, Mar 27, 2011 at 6:57 PM, Charles Campbell <
> cncampbell@windstream.net> wrote:
>
>> cncampbell@windstream.net>
>>
>>
>> Don't worry about it -- I don't.
>>
>> ----- Original Message ----- From: "womenfly2" <keriannprice@hotmail.com>
>> To: <pietenpol-list@matronics.com>
>> Sent: Sunday, March 27, 2011 6:25 PM
>>
>> Subject: Pietenpol-List: Re: wings
>>
>>
>>
>>> keriannprice@hotmail.com>
>>>
>>> Your wing spars really worry me. Seriously.
>>>
>>>
>>>
>>>
>>> Read this topic online here:
>>>
>>> http://forums.matronics.com/viewtopic.php?p=335203#335203
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>> ==========
>> st" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List
>> ==========
>> http://forums.matronics.com
>> ==========
>> le, List Admin.
>> ="_blank">http://www.matronics.com/contribution
>> ==========
>>
>>
>>
>>
> *
>
> href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matronics.com/Navigator?Pietenpol-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/c*
>
> *
>
> *
>
>
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I've been biting my tongue on this one, but Chuck's responses warrant a comment,
I think.
Chuck wrote:
> I mean, if I were building a 300-HP, 300-MPH airplane this would be a concern.
The plane I'm building will probably never get to 100 MPH and will probably
never see more than 1.5 - 2.0 Gs. Give me a break!
>
1. If you were building a 300HP, 300MPH airplane, the spars would have been designed
to handle the stresses that such a plane would encounter. But you're building
a less-than-100HP, less-than-100MPH airplane that was designed as such.
The spars as indicated in the plans are sized for the conditions that THIS airplane
is expected to encounter. If you use materials that do not meet the normally
accepted standards, as set out in AC 43.13-1b, then you are basically weakening
the structure of the aircraft.
2. If you do a 60 degree banked turn, your airplane will see 2 Gs. If you make
a steeper turn, you could easily see 3 Gs or more. Add some turbulence, and it
gets even worse. General aviation light aircraft are designed to withstand +4
Gs. Using sub-standard spars can significantly reduce the stresses that the airframe
can safely handle.
Some parts of an aircraft can withstand some damage, and manage to make it safely
back to earth. The spars are not among those parts. If a spar fails in flight,
you (and any passenger) are toast.
Hopefully the "break" you're asking for is not in one of your spars.
Give this matter some serious thought, Chuck.
Bill C.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335269#335269
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Charles,
Have you rigged and trammeled the wing yet? If so, you should not
have glued the ribs in place anyway. The ribs are not a structural
part of the wing per se, the spars, compression struts and drag/
antidrag cables are what give the wing its proper shape/geometry and
structural strength.
Kip Gardner
On Mar 28, 2011, at 9:55 AM, Charles Campbell wrote:
> Norm, here's the thing. I have epoxy glued 14 ribs to those spars.
> I don't want to tear that whole thing up if I don't have to. This
> 'dar' you mentioned, how can I find out who he/she is for my area
> and do you think he/she would be willing to come look at the wing to
> see if I REALLY need to tear it up? I'm satisfied that for what the
> airplane will be asked to do that it would be perfectly safe. But,
> as you say, it would be a shame to get the thing finished and then
> not be able to get it licensed. I would appreciate your ideas. Chuck
> ----- Original Message -----
> From: norm
> To: pietenpol-list@matronics.com
> Sent: Sunday, March 27, 2011 9:06 PM
> Subject: Re: Pietenpol-List: Re: wings
>
> I too think you should get some local help on selecting your spar
> quality ,
> perhaps an eaa chapter ,, or fellow builder or ? It would be a
> shame if your dar fails it after all your hard work , please accept
> this as friendly criticism regards norm
>
> From: womenfly2 <keriannprice@hotmail.com>
> To: pietenpol-list@matronics.com
> Sent: Sun, March 27, 2011 6:25:29 PM
> Subject: Pietenpol-List: Re: wings
>
> >
>
> Your wing spars really worry me. Seriously.
>
>
> Read this topic online here:
>
> http://forums.matronics.cnbsp;
>
>
> href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matronics.com/Navigator?Pietenpol-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://
> www.matronics.com/c
>
>
Message 16
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Torque Control Tube Location |
Hi Jack - I think I understand what you're asking. There's not much room in the
cockpit to slide that bottom aileron control attachment horn forward. I built
the controls before I figured out the wing geometry. In order to accommodate
the rearward slope of the cables, I clearanced the panel base plywood upon
assembly. Hope that makes sense and I hope I understood your question.
Kevin
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335273#335273
Message 17
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Chuck:
The FAR's for structual wood is pretty clear. The maximum allowable grain run out
(slope of the grain lines) is 1 inch in 15 inches. From your photographs you
have some ares where it is 1 inch in 2. Your grain pattern is also wavy. The
FAR's allow this. but only if the run out is maintained, which in your case it
isn't. In addition the number of annular groth rings should be a minimum of
6 per inch, but preferably in the 12 to 15 per inch range. In some areas of your
spars it looks to be 1 line per inch.
Chuck, I know you have put a lot of effort in getting your wings to this state,
but the bottom line is that they are unsafe. Its highly unlikely you will get
an airworthiness certificate upon inspection. Its far better to correct the problem
now rather putting more effort into it.
Rick Schreiber,
Valparaiso, IN
Message 18
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Torque Control Tube Location |
Jack,
I also have a 4" tilt back (swag), and the aileron portion of my assembly is
built to plans. The routing holes for the cable were done with strings and
eyeballs, but the end result is that there was plenty of room behind the
instruments; and I did not increase the length of my cabanes, making the
angle greater than those who have..not sure if that helps.
Gary Boothe
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 4:10 AM
Subject: Pietenpol-List: Torque Control Tube Location
Ready to mount my control assembly. Considering the angle the aileron
cables pass through the slot in the panel base up to the center section
pulleys. I'm just guessing my wing will be 4 inches aft of perpendicular.
(Is this average for a long fuselage, C-85, split gear, heavier than average
tail) Can someone help with the calculation of how far the aileron control
horn needs to be forward of the slot in the panel base? Assuming a rise of
approximately 46" (horn to slot 22" and slot to c-section 24") and wing aft
4" equals having the horn 4" forward the slot?? Not sure I have that much
room.
Thanks!!
Jack
DSM
Message 19
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
There is some useful information on spar analysis that can be found on
Chris Tracy's WestCoastPiet.Com website under his Construction tile.
Two documents, in particular, are helpful in thinking about the use of
wood as spars. One is Simplified Wing Stress Analysis and the other
is I-Beam Analysis. A couple of observations from these documents.
One, the speed of the aircraft is irrelevant in calculating loads on
the spars themselves. Two, the maximum stress on a strut based wing
is found 3/8ths of the distance outboard of the flying strut attach
point (see Fig 1 in the Simplified Wing Stress Analysis document).
That is the point at which all of the loads outboard of the strut are
concentrated. Generally, this will be on the forward spar.
If I were looking for the one place to avoid any waviness in a spar,
it would be the forward spar in the general area outboard of the strut
fitting that is between 1/4th and 1/2th of the distance out. Looking
at the pictures, that is precisely the location of maximum waviness in
these spars.
Ken
On Mon, Mar 28, 2011 at 8:13 AM, Ryan Mueller <rmueller23@gmail.com> wrote:
> That's cool. After reviewing the material again I did miss the footnote that
> said:
> "Minimum standards for acceptable wood for aircraft use do not apply to
> aircraft making less than 300 horsepower, with a VNE less than 300 miles per
> hour, or one which will most likely be unable to achieve an airspeed of 100
> miles per hour or experience stresses any greater than 2.0 G. In such cases
> the builder shall also display, in addition to and viewable alongside the
> EXPERIMENTAL placard, a placard stating "DON'T WORRY ABOUT IT, I DON'T".....
> do not archive
>
> On Mon, Mar 28, 2011 at 7:44 AM, Charles Campbell
> <cncampbell@windstream.net> wrote:
>>
>> I mean, if I were building a 300-HP, 300-MPH airplane this would be a
>> concern. The plane I'm building will probably never get to 100 MPH and will
>> probably never see more than 1.5 - 2.0 Gs. Give me a break!
>>
>> ----- Original Message -----
>> From: Ryan Mueller
>> To: pietenpol-list@matronics.com
>> Sent: Sunday, March 27, 2011 8:38 PM
>> Subject: Re: Pietenpol-List: Re: wings
>> Excellent attitude...
>>
>> On Sun, Mar 27, 2011 at 6:57 PM, Charles Campbell
>> <cncampbell@windstream.net> wrote:
>>>
>>> <cncampbell@windstream.net>
>>>
>>> Don't worry about it -- I don't.
>>>
>>> ----- Original Message ----- From: "womenfly2" <keriannprice@hotmail.com>
>>> To: <pietenpol-list@matronics.com>
>>> Sent: Sunday, March 27, 2011 6:25 PM
>>> Subject: Pietenpol-List: Re: wings
>>>
>>>
>>>> <keriannprice@hotmail.com>
>>>>
>>>> Your wing spars really worry me. Seriously.
>>>>
>>>>
>>>>
>>>>
>>>> Read this topic online here:
>>>>
>>>> http://forums.matronics.com/viewtopic.php?p=335203#335203
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>> ==========
>>> st" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List
>>> ==========
>>> http://forums.matronics.com
>>> ==========
>>> le, List Admin.
>>> ="_blank">http://www.matronics.com/contribution
>>> ==========
>>>
>>>
>>>
>>
>>
>>
>> href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matronics.com/Navigator?Pietenpol-List
>> href="http://forums.matronics.com">http://forums.matronics.com
>> href="http://www.matronics.com/contribution">http://www.matronics.com/c
>>
>> " target="_blank">http://www.matronics.com/Navigator?Pietenpol-List
>> tp://forums.matronics.com
>> _blank">http://www.matronics.com/contribution
>
>
Message 20
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Quick correction to Rick's post. The minimum of 6 growth rings per
inch is for Sitka Spruce (as well as Hemlock). For Douglas Fir, the
minimum is 8 growth rings per inch. The run out figure of 1 inch in
15 is the same across these wood types.
On Mon, Mar 28, 2011 at 9:19 AM, Richard Schreiber
<lmforge@earthlink.net> wrote:
> Chuck:
> The FAR's for structual wood is pretty clear. The maximum allowable grain
> run out (slope of the grain lines) is 1 inch in 15 inches. From your
> photographs you have some ares where it is 1 inch in 2. Your grain pattern
> is also wavy. The FAR's allow this. but only if the run out is maintained,
> which in your case it isn't. In addition the number of annular groth rings
> should be a minimum of 6 per inch, but preferably in the 12 to 15 per inch
> range. In some areas of your spars it looks to be 1 line per inch.
>
> Chuck, I know you have put a lot of effort in getting your wings to this
> state, but the bottom line is that they are unsafe. Its highly unlikely you
> will get an airworthiness certificate upon inspection. Its far better to
> correct the problem now rather putting more effort into it.
>
> Rick Schreiber,
> Valparaiso, IN
>
>
Message 21
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I'm trying to visualize what it must be like for Chuck, when he realizes, or
learns from his DAR or FAA inspector, that his spars are un-airworthy, and
what the possible resolves are. Is it worth trying to save all those ribs
and figure out a way to remove the spar without damaging each rib? For me it
would be, but I know others who actually enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the question and
getting some ideas on how to cut the ribs loose?
Gary Boothe
Message 22
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Chuck:
Here is a link to a very good report from the EAA on spar wood selection. http://www.oshkosh365.org/saarchive/eaa_articles/1966_09_19.pdf
By the way the number of growth lines per inch that I quoted was for spruce. For
douglas fir, which it appears your spars are, its actually a minimum of 8 per
inch.
Attached is an example of typical spruce spar material from Aircraft Spruce.
Regards,
Rick Schreiber
----- Original Message -----
From: Richard Schreiber
Sent: 3/28/2011 11:26:53 AM
Subject: Re: Pietenpol-List: Re: wings
Chuck:
The FAR's for structual wood is pretty clear. The maximum allowable grain run out
(slope of the grain lines) is 1 inch in 15 inches. From your photographs you
have some ares where it is 1 inch in 2. Your grain pattern is also wavy. The
FAR's allow this. but only if the run out is maintained, which in your case it
isn't. In addition the number of annular groth rings should be a minimum of
6 per inch, but preferably in the 12 to 15 per inch range. In some areas of your
spars it looks to be 1 line per inch.
Chuck, I know you have put a lot of effort in getting your wings to this state,
but the bottom line is that they are unsafe. Its highly unlikely you will get
an airworthiness certificate upon inspection. Its far better to correct the problem
now rather putting more effort into it.
Rick Schreiber,
Valparaiso, IN
No virus found in this message.
Checked by AVG - www.avg.com
Message 23
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Torque Control Tube Location |
It does Kevin, thanks. I'm just trying to "predict the future" hoping the
cables won't interfere with instruments' or depart through the panel.
Jack
DSM
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of kevinpurtee
Sent: Monday, March 28, 2011 9:51 AM
Subject: Pietenpol-List: Re: Torque Control Tube Location
<kevin.purtee@us.army.mil>
Hi Jack - I think I understand what you're asking. There's not much room in
the cockpit to slide that bottom aileron control attachment horn forward. I
built the controls before I figured out the wing geometry. In order to
accommodate the rearward slope of the cables, I clearanced the panel base
plywood upon assembly. Hope that makes sense and I hope I understood your
question.
Kevin
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335273#335273
Message 24
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Torque Control Tube Location |
Thanks Gary!
Jack
Do not archive
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Gboothe5
Sent: Monday, March 28, 2011 10:21 AM
Subject: RE: Pietenpol-List: Torque Control Tube Location
Jack,
I also have a 4" tilt back (swag), and the aileron portion of my assembly is
built to plans. The routing holes for the cable were done with strings and
eyeballs, but the end result is that there was plenty of room behind the
instruments; and I did not increase the length of my cabanes, making the
angle greater than those who have..not sure if that helps.
Gary Boothe
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 4:10 AM
Subject: Pietenpol-List: Torque Control Tube Location
Ready to mount my control assembly. Considering the angle the aileron
cables pass through the slot in the panel base up to the center section
pulleys. I'm just guessing my wing will be 4 inches aft of perpendicular.
(Is this average for a long fuselage, C-85, split gear, heavier than average
tail) Can someone help with the calculation of how far the aileron control
horn needs to be forward of the slot in the panel base? Assuming a rise of
approximately 46" (horn to slot 22" and slot to c-section 24") and wing aft
4" equals having the horn 4" forward the slot?? Not sure I have that much
room.
Thanks!!
Jack
DSM
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 25
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Torque Control Tube Location |
Through pure dumb luck (keep exhibiting that, don't I!) I have no interference
with instruments and my cabanes are stock as well.
do not archive
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335301#335301
Message 26
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Gary:
I with you on this one! It certainly would be devastating to wind out that the
spars are not acceptable. Here are a couple of possibilities.
1. Consider the spars as toast. Carefully cut the spars between each rib, then
using whatever means necessary, remove the spar materal from each of the ribs.
It would be alot of work, but certainly less than rebuilding all of the ribs.
2. Junk the whole wing assembly and order another set of finished ribs. I know
that Edgar Howe sells a nice set of completed ribs (either the original Pietenpol
airfoil or the Riblett 612 for around $300. I know that I sure wouldn't have
the heart to redo the ribs.
Chuck, if you decide to order the ribs, Edgar can be reached at 219-508-6880. He
also will be at Brodhead with ribs for sale.
Regards,
Rick Schreiber
----- Original Message -----
From: Gboothe5
Sent: 3/28/2011 12:16:01 PM
Subject: RE: Pietenpol-List: Re: wings
Im trying to visualize what it must be like for Chuck, when he realizes, or learns
from his DAR or FAA inspector, that his spars are un-airworthy, and what the
possible resolves are. Is it worth trying to save all those ribs and figure
out a way to remove the spar without damaging each rib? For me it would be, but
I know others who actually enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the question and getting
some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
No virus found in this message.
Checked by AVG - www.avg.com
Message 27
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Torque Control Tube Location |
Oh, but the cable come very close to the windscreen! I can send pics later
if you want..
Gary
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 10:01 AM
Subject: RE: RE: Pietenpol-List: Torque Control Tube Location
Thanks Gary!
Jack
Do not archive
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Gboothe5
Sent: Monday, March 28, 2011 10:21 AM
Subject: RE: Pietenpol-List: Torque Control Tube Location
Jack,
I also have a 4" tilt back (swag), and the aileron portion of my assembly is
built to plans. The routing holes for the cable were done with strings and
eyeballs, but the end result is that there was plenty of room behind the
instruments; and I did not increase the length of my cabanes, making the
angle greater than those who have..not sure if that helps.
Gary Boothe
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 4:10 AM
Subject: Pietenpol-List: Torque Control Tube Location
Ready to mount my control assembly. Considering the angle the aileron
cables pass through the slot in the panel base up to the center section
pulleys. I'm just guessing my wing will be 4 inches aft of perpendicular.
(Is this average for a long fuselage, C-85, split gear, heavier than average
tail) Can someone help with the calculation of how far the aileron control
horn needs to be forward of the slot in the panel base? Assuming a rise of
approximately 46" (horn to slot 22" and slot to c-section 24") and wing aft
4" equals having the horn 4" forward the slot?? Not sure I have that much
room.
Thanks!!
Jack
DSM
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 28
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Torque Control Tube Location |
Oh, but the cable come very close to the windscreen! I can send pics later
if you want..
Gary
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 10:01 AM
Subject: RE: RE: Pietenpol-List: Torque Control Tube Location
Thanks Gary!
Jack
Do not archive
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Gboothe5
Sent: Monday, March 28, 2011 10:21 AM
Subject: RE: Pietenpol-List: Torque Control Tube Location
Jack,
I also have a 4" tilt back (swag), and the aileron portion of my assembly is
built to plans. The routing holes for the cable were done with strings and
eyeballs, but the end result is that there was plenty of room behind the
instruments; and I did not increase the length of my cabanes, making the
angle greater than those who have..not sure if that helps.
Gary Boothe
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 4:10 AM
Subject: Pietenpol-List: Torque Control Tube Location
Ready to mount my control assembly. Considering the angle the aileron
cables pass through the slot in the panel base up to the center section
pulleys. I'm just guessing my wing will be 4 inches aft of perpendicular.
(Is this average for a long fuselage, C-85, split gear, heavier than average
tail) Can someone help with the calculation of how far the aileron control
horn needs to be forward of the slot in the panel base? Assuming a rise of
approximately 46" (horn to slot 22" and slot to c-section 24") and wing aft
4" equals having the horn 4" forward the slot?? Not sure I have that much
room.
Thanks!!
Jack
DSM
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 29
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
don, these are made of Douglas Fir and I thought they would be much stronger
than spruce. The strength tables show that they are.
----- Original Message -----
From: "Don Emch" <EmchAir@aol.com>
Sent: Monday, March 28, 2011 7:40 AM
Subject: Pietenpol-List: Re: wings
>
> Chuck,
>
> Please take these comments as positive, caring, criticism. The way the
> pictures look the spars do not meet the wood specs that are called for.
> We do have the liberty to build what we want and basically how we want,
> but those specs have been called out for a reason. Please check them
> over. I've built several spars for several airplanes and this is an area
> that you clearly don't want to use sub par materials. The really cool
> thing right now is that there doesn't seem to be a shortage of excellent
> spar quality spruce wood. Probably about $800 will get you excellent spar
> material from one of the top aircraft suppliers and you'll have it in
> about 2 weeks. Pretty good for the most important structural part of the
> airplane.
>
> Don Emch
> NX899DE
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=335243#335243
>
>
>
Message 30
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rounded Seat for Delrin Needle, Stromberg Carb, |
Conti...
Curt
I have not heard from Mike. If you want the needle seat let me know.
Just send me your address.
Dave
Message 31
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Don, what do you think of the rear spar? Can you see enough of it to
comment?
----- Original Message -----
From: "Don Emch" <EmchAir@aol.com>
Sent: Monday, March 28, 2011 7:40 AM
Subject: Pietenpol-List: Re: wings
>
> Chuck,
>
> Please take these comments as positive, caring, criticism. The way the
> pictures look the spars do not meet the wood specs that are called for.
> We do have the liberty to build what we want and basically how we want,
> but those specs have been called out for a reason. Please check them
> over. I've built several spars for several airplanes and this is an area
> that you clearly don't want to use sub par materials. The really cool
> thing right now is that there doesn't seem to be a shortage of excellent
> spar quality spruce wood. Probably about $800 will get you excellent spar
> material from one of the top aircraft suppliers and you'll have it in
> about 2 weeks. Pretty good for the most important structural part of the
> airplane.
>
> Don Emch
> NX899DE
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=335243#335243
>
>
>
Message 32
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I have already received a couple, but go ahead if you have any
suggestions.
----- Original Message -----
From: Gboothe5
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 12:43 PM
Subject: RE: Pietenpol-List: Re: wings
I'm trying to visualize what it must be like for Chuck, when he
realizes, or learns from his DAR or FAA inspector, that his spars are
un-airworthy, and what the possible resolves are. Is it worth trying to
save all those ribs and figure out a way to remove the spar without
damaging each rib? For me it would be, but I know others who actually
enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the question
and getting some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-Listhttp://forums.matronics.
comhttp://www.matronics.com/contribution
Message 33
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hi Chuck,
I am getting therapy twice a week now and have been for 6weeks at out patient facility
and two weeks at home before that. It will flex a little over 100 degrees
now but am hoping I can make that more like 120 degrees before I run out of
money for therapy.
Right now if I drop something on the floor I have a heck of a time picking it up
to say nothing of trying to work on the tail wheel or anything on or near the
belly.
... but it is coming.
Thanks,
Jim Boyer
Do not archive
Message 34
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Torque Control Tube Location |
Oh, but the cable come very close to the windscreen! I can send pics later
if you want..
Gary
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 10:01 AM
Subject: RE: RE: Pietenpol-List: Torque Control Tube Location
Thanks Gary!
Jack
Do not archive
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Gboothe5
Sent: Monday, March 28, 2011 10:21 AM
Subject: RE: Pietenpol-List: Torque Control Tube Location
Jack,
I also have a 4" tilt back (swag), and the aileron portion of my assembly is
built to plans. The routing holes for the cable were done with strings and
eyeballs, but the end result is that there was plenty of room behind the
instruments; and I did not increase the length of my cabanes, making the
angle greater than those who have..not sure if that helps.
Gary Boothe
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 4:10 AM
Subject: Pietenpol-List: Torque Control Tube Location
Ready to mount my control assembly. Considering the angle the aileron
cables pass through the slot in the panel base up to the center section
pulleys. I'm just guessing my wing will be 4 inches aft of perpendicular.
(Is this average for a long fuselage, C-85, split gear, heavier than average
tail) Can someone help with the calculation of how far the aileron control
horn needs to be forward of the slot in the panel base? Assuming a rise of
approximately 46" (horn to slot 22" and slot to c-section 24") and wing aft
4" equals having the horn 4" forward the slot?? Not sure I have that much
room.
Thanks!!
Jack
DSM
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 35
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hi again Chuck,
I'm not working the computer too swiftly right now.
I am sorry you had gotten sick after the surgery; I was really afraid of that myself
as we have 5 grandkids nearby and at least one of them has something it
seems. My wife had a knee replacement too about 8 years ago and she was really
insisting on me doing the therapy so that helped.
Can you bend the knee enough now to get down on the floor and work on landing gear,
etc?
Jim Boyer
Do not archive
Message 36
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hi Chuck,
I really feel for you and the bad feeling you get at the thought of re-doing something
like this. It just sucks!
I know that Douglas Fir is supposedly stronger, but even the rear spars don't appear
to meet the specs. I understand a big reason for the grain per inch spec
has some to do with warpage, but strength is a very big issue too. Strength
that is measureable and consistent is found in spar examples that meet the specs.
If you don't meets those specs then you really don't know what you have.
Again the whole idea of re-doing something like this sucks. I made center section
fittings I didn't think were good so I dismantled the whole centersection
and built new. Then there was the time the hangar collapsed on the finished airplane
and I had to rebuild. It just sucks!
Maybe you could cut the upright where the rib is glued to the spar and then when
replacing the spar you could just splice in a new upright. That's how I rebuilt
my centersection.
Don Emch
NX899DE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335315#335315
Message 37
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Incredible, I was up at Dave's place just 2 weeks ago looking at his 235
engine parts scattered all over the living room, a beautiful new Sensenich
aluminum prop, and some tubing that Dave said would take him maybe a day to
make into an engine mount and look at it now, its ready to run.
Incredible work Dave
rick
(and you guys won't believe what Dave's next project is, he already has the
plans and is tracking down some engines)
On Mon, Mar 28, 2011 at 5:09 AM, Dangerous Dave <dsornbor@aol.com> wrote:
>
> Not much more to do,should be done here shortly,dave
>
> --------
> Covering Piet
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=335240#335240
>
>
> Attachments:
>
> http://forums.matronics.com//files/2011_03_27_07_55_54_338_459.jpg
>
>
--
Rick Holland
Castle Rock, Colorado
"A Foolish Consistency is the Hobgoblin of Little Minds"
Message 38
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Drive a =BD=94 chisel under each rib, from both sides. Remove rib, clean
up with
a file.
Gary
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Charles
Campbell
Sent: Monday, March 28, 2011 11:06 AM
Subject: Re: Pietenpol-List: Re: wings
I have already received a couple, but go ahead if you have any
suggestions.
----- Original Message -----
From: Gboothe5 <mailto:gboothe5@comcast.net>
Sent: Monday, March 28, 2011 12:43 PM
Subject: RE: Pietenpol-List: Re: wings
I=92m trying to visualize what it must be like for Chuck, when he
realizes, or
learns from his DAR or FAA inspector, that his spars are un-airworthy,
and
what the possible resolves are. Is it worth trying to save all those
ribs
and figure out a way to remove the spar without damaging each rib? For
me it
would be, but I know others who actually enjoy making those crazy
things!
How about you, Chuck? Are you interested in putting forth the question
and
getting some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.mat
ronic
s.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 39
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
What do the initials DAR stand for? It's designated aircraft R-------?
I'm going to try to find the one for my area and I want it from the
horse's mouth that he won't approve my wing before I do ANYTHING.
----- Original Message -----
From: Richard Schreiber
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 1:39 PM
Subject: RE: Pietenpol-List: Re: wings
Gary:
I with you on this one! It certainly would be devastating to wind out
that the spars are not acceptable. Here are a couple of possibilities.
1. Consider the spars as toast. Carefully cut the spars between each
rib, then using whatever means necessary, remove the spar materal from
each of the ribs. It would be alot of work, but certainly less than
rebuilding all of the ribs.
2. Junk the whole wing assembly and order another set of finished
ribs. I know that Edgar Howe sells a nice set of completed ribs (either
the original Pietenpol airfoil or the Riblett 612 for around $300. I
know that I sure wouldn't have the heart to redo the ribs.
Chuck, if you decide to order the ribs, Edgar can be reached at
219-508-6880. He also will be at Brodhead with ribs for sale.
Regards,
Rick Schreiber
----- Original Message -----
From: Gboothe5
To: pietenpol-list@matronics.com
Sent: 3/28/2011 12:16:01 PM
Subject: RE: Pietenpol-List: Re: wings
I'm trying to visualize what it must be like for Chuck, when he
realizes, or learns from his DAR or FAA inspector, that his spars are
un-airworthy, and what the possible resolves are. Is it worth trying to
save all those ribs and figure out a way to remove the spar without
damaging each rib? For me it would be, but I know others who actually
enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the
question and getting some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-Listhttp:/
/forums.matronics.comhttp://www.matronics.com/contribution
-------------------------------------------------------------------------
---
Message 40
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I don't believe I'll be ordering ribs that have been made by someone
else. I think I can salvedge the ones I have if it comes to that.
----- Original Message -----
From: Richard Schreiber
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 1:39 PM
Subject: RE: Pietenpol-List: Re: wings
Gary:
I with you on this one! It certainly would be devastating to wind out
that the spars are not acceptable. Here are a couple of possibilities.
1. Consider the spars as toast. Carefully cut the spars between each
rib, then using whatever means necessary, remove the spar materal from
each of the ribs. It would be alot of work, but certainly less than
rebuilding all of the ribs.
2. Junk the whole wing assembly and order another set of finished
ribs. I know that Edgar Howe sells a nice set of completed ribs (either
the original Pietenpol airfoil or the Riblett 612 for around $300. I
know that I sure wouldn't have the heart to redo the ribs.
Chuck, if you decide to order the ribs, Edgar can be reached at
219-508-6880. He also will be at Brodhead with ribs for sale.
Regards,
Rick Schreiber
----- Original Message -----
From: Gboothe5
To: pietenpol-list@matronics.com
Sent: 3/28/2011 12:16:01 PM
Subject: RE: Pietenpol-List: Re: wings
I'm trying to visualize what it must be like for Chuck, when he
realizes, or learns from his DAR or FAA inspector, that his spars are
un-airworthy, and what the possible resolves are. Is it worth trying to
save all those ribs and figure out a way to remove the spar without
damaging each rib? For me it would be, but I know others who actually
enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the
question and getting some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-Listhttp:/
/forums.matronics.comhttp://www.matronics.com/contribution
-------------------------------------------------------------------------
---
Message 41
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
How do I find out who the DAR is in my area?
----- Original Message -----
From: Gboothe5
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 12:43 PM
Subject: RE: Pietenpol-List: Re: wings
I'm trying to visualize what it must be like for Chuck, when he
realizes, or learns from his DAR or FAA inspector, that his spars are
un-airworthy, and what the possible resolves are. Is it worth trying to
save all those ribs and figure out a way to remove the spar without
damaging each rib? For me it would be, but I know others who actually
enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the question
and getting some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-Listhttp://forums.matronics.
comhttp://www.matronics.com/contribution
Message 42
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Chuck,
I am a new guy to this forum, and have yet to start building my ribs. I do, however,
feel for you.
>From my woodworking experience (and I am sure that there are plenty of people
on this forum with far more experience, than I), I guess i would start by cutting
all 14 ribs off the spars. Cut through the spars as close as possible to each
rib (but not too close) and lay the ribs aside. I know when I am unhappy with
work that I have done, the first thing I want to do is get rid of the evidence!
I am trying to make a joke here, but the truth is that I want the unacceptable
work gone.
I would then come up with the top 5 ways to fix the problem. Next, I would go one
by one and try them until you find the easiest, best way to accomplish the
job. Some suggestions-
1. I like Don's idea of cutting through the rib and both uprights, clean up the
inside portions of the capstrips, put the rib back on the jig and redo the uprights.
2. You could try taking a chisel and carefully chipping away at the portion of
rib that remains.
3. Start a kindling for next winter, and start over on half your ribs. (The least
palatable choice, but the one I would probably think of doing, out of frustration).
4. Buy 'em and call it a tuition payment to the school of airplane building.
I wish you the best and I will keep you posted as I begin making my ribs. I know
that you will do well as you move forward. Don't let this take the wind out
of your sails.
--------
Semper Fi,
Terry
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335323#335323
Message 43
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I can get down a whole lot better than I can get up :>)
----- Original Message -----
From: Jim Boyer
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 3:15 PM
Subject: Re: Pietenpol-List: Progress
Hi again Chuck,
I'm not working the computer too swiftly right now.
I am sorry you had gotten sick after the surgery; I was really afraid
of that myself as we have 5 grandkids nearby and at least one of them
has something it seems. My wife had a knee replacement too about 8 years
ago and she was really insisting on me doing the therapy so that helped.
Can you bend the knee enough now to get down on the floor and work on
landing gear, etc?
Jim Boyer
Do not archive
Message 44
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
#2. The reason I got sick was they gave me so many antibiotics to keep
the knee from getting infected that it killed off the good bacteria in
my system and a bad bug took over. Nothing to do with the knee surgery
other than the Dr who operated was the one who prescribed all the
antibiotics.
----- Original Message -----
From: Jim Boyer
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 3:15 PM
Subject: Re: Pietenpol-List: Progress
Hi again Chuck,
I'm not working the computer too swiftly right now.
I am sorry you had gotten sick after the surgery; I was really afraid
of that myself as we have 5 grandkids nearby and at least one of them
has something it seems. My wife had a knee replacement too about 8 years
ago and she was really insisting on me doing the therapy so that helped.
Can you bend the knee enough now to get down on the floor and work on
landing gear, etc?
Jim Boyer
Do not archive
Message 45
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Good! Just keep plugging away. My knee flexes OK, but I don't have
much strength in my right leg and it hurts some. Guess I'll just have
to live with it. There is a fellow in our Sunday School class who had
both his knees done and he says they feel like he's a teenager again.
He's a plumber and he crawls around on his hands and knees on concrete
floors without any trouble or pain. I can hardly crawl around on
carpeted floor. Hope you get better! Chuck
----- Original Message -----
From: Jim Boyer
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 3:08 PM
Subject: Re: Pietenpol-List: Progress
Hi Chuck,
I am getting therapy twice a week now and have been for 6weeks at out
patient facility and two weeks at home before that. It will flex a
little over 100 degrees now but am hoping I can make that more like 120
degrees before I run out of money for therapy.
Right now if I drop something on the floor I have a heck of a time
picking it up to say nothing of trying to work on the tail wheel or
anything on or near the belly.
... but it is coming.
Thanks,
Jim Boyer
Do not archive
Message 46
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
http://www.faa.gov/other_visit/aviation_industry/designees_delegations/desi
gnee_types/dar/
On Mon, Mar 28, 2011 at 3:06 PM, Charles Campbell <cncampbell@windstream.ne
t
> wrote:
> How do I find out who the DAR is in my area?
>
> ----- Original Message -----
> *From:* Gboothe5 <gboothe5@comcast.net>
> *To:* pietenpol-list@matronics.com
> *Sent:* Monday, March 28, 2011 12:43 PM
> *Subject:* RE: Pietenpol-List: Re: wings
>
> I=92m trying to visualize what it must be like for Chuck, when he realiz
es,
> or learns from his DAR or FAA inspector, that his spars are un-airworthy,
> and what the possible resolves are. Is it worth trying to save all those
> ribs and figure out a way to remove the spar without damaging each rib? F
or
> me it would be, but I know others who actually enjoy making those crazy
> things!
>
>
> How about you, Chuck? Are you interested in putting forth the question an
d
> getting some ideas on how to cut the ribs loose?
>
>
> Gary Boothe
>
>
> * *
>
> * *
>
> **
>
> **
>
> **
>
> **
>
> **
>
> **
>
> *http://www.matronics.com/Navigator?Pietenpol-List*
>
> **
>
> **
>
> **
>
> *http://forums.matronics.com*
>
> **
>
> **
>
> **
>
> **
>
> *http://www.matronics.com/contribution*
>
> **
>
> * *
>
> *
>
> href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.mat
ronics.com/Navigator?Pietenpol-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/c
*
>
> *
>
===========
===========
===========
===========
> *
>
>
Message 47
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I also have an extra set of standard Piet ribs which I would let go very
reasonably. I bought them about two years ago.
Bob
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Charles
Campbell
Sent: March 28, 2011 4:01 PM
Subject: Re: Pietenpol-List: Re: wings
What do the initials DAR stand for? It's designated aircraft R-------?
I'm going to try to find the one for my area and I want it from the
horse's mouth that he won't approve my wing before I do ANYTHING.
----- Original Message -----
From: Richard Schreiber <mailto:lmforge@earthlink.net>
Sent: Monday, March 28, 2011 1:39 PM
Subject: RE: Pietenpol-List: Re: wings
Gary:
I with you on this one! It certainly would be devastating to wind out that
the spars are not acceptable. Here are a couple of possibilities.
1. Consider the spars as toast. Carefully cut the spars between each rib,
then using whatever means necessary, remove the spar materal from each of
the ribs. It would be alot of work, but certainly less than rebuilding all
of the ribs.
2. Junk the whole wing assembly and order another set of finished ribs. I
know that Edgar Howe sells a nice set of completed ribs (either the
original Pietenpol airfoil or the Riblett 612 for around $300. I know that
I sure wouldn't have the heart to redo the ribs.
Chuck, if you decide to order the ribs, Edgar can be reached at
219-508-6880. He also will be at Brodhead with ribs for sale.
Regards,
Rick Schreiber
----- Original Message -----
From: Gboothe5 <mailto:gboothe5@comcast.net>
Sent: 3/28/2011 12:16:01 PM
Subject: RE: Pietenpol-List: Re: wings
I'm trying to visualize what it must be like for Chuck, when he realizes,
or learns from his DAR or FAA inspector, that his spars are un-airworthy,
and what the possible resolves are. Is it worth trying to save all those
ribs and figure out a way to remove the spar without damaging each rib?
For me it would be, but I know others who actually enjoy making those
crazy things!
How about you, Chuck? Are you interested in putting forth the question and
getting some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-List
http:/
/forums.matronics.com
http://www.matronics.com/contribution
_____
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matron
ics.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 48
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
OK, Don. Thanks for your concern. I am in the process of locating the
designated inspector for this region. I want to talk to him before I do
anything about ripping my wing apart. The way you suggested is the way I
will do it if it comes to that. Thanks again. Chuck
----- Original Message -----
From: "Don Emch" <EmchAir@aol.com>
Sent: Monday, March 28, 2011 3:34 PM
Subject: Pietenpol-List: Re: wings
>
> Hi Chuck,
>
> I really feel for you and the bad feeling you get at the thought of
> re-doing something like this. It just sucks!
>
> I know that Douglas Fir is supposedly stronger, but even the rear spars
> don't appear to meet the specs. I understand a big reason for the grain
> per inch spec has some to do with warpage, but strength is a very big
> issue too. Strength that is measureable and consistent is found in spar
> examples that meet the specs. If you don't meets those specs then you
> really don't know what you have.
>
> Again the whole idea of re-doing something like this sucks. I made center
> section fittings I didn't think were good so I dismantled the whole
> centersection and built new. Then there was the time the hangar collapsed
> on the finished airplane and I had to rebuild. It just sucks!
>
> Maybe you could cut the upright where the rib is glued to the spar and
> then when replacing the spar you could just splice in a new upright.
> That's how I rebuilt my centersection.
>
> Don Emch
> NX899DE
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=335315#335315
>
>
>
Message 49
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Sounds good, Gary. Thanks.
----- Original Message -----
From: Gboothe5
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 3:53 PM
Subject: RE: Pietenpol-List: Re: wings
Drive a =BD" chisel under each rib, from both sides. Remove rib, clean
up with a file.
Gary
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Charles
Campbell
Sent: Monday, March 28, 2011 11:06 AM
To: pietenpol-list@matronics.com
Subject: Re: Pietenpol-List: Re: wings
I have already received a couple, but go ahead if you have any
suggestions.
----- Original Message -----
From: Gboothe5
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 12:43 PM
Subject: RE: Pietenpol-List: Re: wings
I'm trying to visualize what it must be like for Chuck, when he
realizes, or learns from his DAR or FAA inspector, that his spars are
un-airworthy, and what the possible resolves are. Is it worth trying to
save all those ribs and figure out a way to remove the spar without
damaging each rib? For me it would be, but I know others who actually
enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the
question and getting some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-Listhttp://forums.matronics.
comhttp://www.matronics.com/contribution
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.mat
ronics.com/Navigator?Pietenpol-Listhref="http://forums.matronics.com">h
ttp://forums.matronics.comhref="http://www.matronics.com/contribution">
http://www.matronics.com/c
http://www.matronics.com/Navigator?Pietenpol-Listhttp://forums.matronics.
comhttp://www.matronics.com/contribution
Message 50
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Chuck:
>From the EAA...."In order for an amateur-built or light-sport airworthiness certificate
to be issued to an aircraft, it must be inspected by a representative
of the FAA. This can be either an FAA employee or a private individual who has
been designated by the FAA to perform these inspections. This designee is called
a Designated Airworthiness Representative, or "DAR". Due to budgetary and
manpower restrictions at FAA offices, most applicants will find it more expedient
to work with a DAR.
The Amateur-Built (AB) FAA Designated Airworthiness Representative (DAR) program
is a joint effort between EAA, the FAA and the Transportation Safety Institute
(TSI), and is designed to provide amateur-built aircraft builders greater access
to AB DARs to certify their completed aircraft.
AB DARs have the FAA authorization to complete the final inspection and issue the
airworthiness certificate and operating limitations for your amateur-built
aircraft. "
Here is a link about this from the EAA http://members.eaa.org/home/govt/help/ab_dar.asp
It is my understanding that it used to be that you had to have an FAA pre-cover
inspection and authorization before proceeding to the covering phase on fabric
covered experimatal aircraft. Due to the budgetary constraints this has been
eliminated and mostly replaced by the use of EAA tech counselors.
In our local EAA chapter we have 2 EAA tech counselors that have kept track of
my progress for the past 8 years. If I don't call them, they will call me to come
out and inspect my Piet. There is no charge for the inspection. After the
inspection a report is filled out with a copy to me and a copy for the EAA and
FAA.
As a hypthetical question, if during your final inspection by the FAA or a DAR
you are asked about what you used for your spars, what are you going to say?
You will not have a reciept showing your spars were aircraft grade spruce and
photographs of the finished wings to prove it. What you currently have are photos
of Douglas Fir spars that do not come close to meeting the FAR's. What then?
Your best course of action is to have a EAA tech councelor come out and look at
the wings. At least that way you have someone you can talk to about the concerns
face to face. As I think Don Emch said, We are not trying to get in your face
about this. We all have empathy for you, as there is not one of us who has
not had to do some serious reconstruction. We just want to make sure you stay
safe and take the best path forward.
Regards,
Rick Schreiber
----- Original Message -----
From: Charles Campbell
Sent: 3/28/2011 3:36:11 PM
Subject: Re: Pietenpol-List: Re: wings
What do the initials DAR stand for? It's designated aircraft R-------? I'm going
to try to find the one for my area and I want it from the horse's mouth that
he won't approve my wing before I do ANYTHING.
----- Original Message -----
From: Richard Schreiber
Sent: Monday, March 28, 2011 1:39 PM
Subject: RE: Pietenpol-List: Re: wings
Gary:
I with you on this one! It certainly would be devastating to wind out that the
spars are not acceptable. Here are a couple of possibilities.
1. Consider the spars as toast. Carefully cut the spars between each rib, then
using whatever means necessary, remove the spar materal from each of the ribs.
It would be alot of work, but certainly less than rebuilding all of the ribs.
2. Junk the whole wing assembly and order another set of finished ribs. I know
that Edgar Howe sells a nice set of completed ribs (either the original Pietenpol
airfoil or the Riblett 612 for around $300. I know that I sure wouldn't have
the heart to redo the ribs.
Chuck, if you decide to order the ribs, Edgar can be reached at 219-508-6880. He
also will be at Brodhead with ribs for sale.
Regards,
Rick Schreiber
----- Original Message -----
From: Gboothe5
Sent: 3/28/2011 12:16:01 PM
Subject: RE: Pietenpol-List: Re: wings
Im trying to visualize what it must be like for Chuck, when he realizes, or learns
from his DAR or FAA inspector, that his spars are un-airworthy, and what the
possible resolves are. Is it worth trying to save all those ribs and figure
out a way to remove the spar without damaging each rib? For me it would be, but
I know others who actually enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the question and getting
some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-List
http:/
/forums.matronics.com
http://www.matronics.com/contribution
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matronics.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
No virus found in this message.
Checked by AVG - www.avg.com
Message 51
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Chuck,
It sounds like you have a very good plan. One nice thing about having a DAR come
out to visit is that you can load up with a whole bunch of questions and just
spend a couple of hours drilling him on many different subjects. Good luck!
Don Emch
NX899DE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335341#335341
Message 52
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Chuck, I can relate to hating having to rebuild completed parts for your ai
rplane.- I am in the process of making new landing gear shock struts, whi
ch were "done".- The hardest part of this airplane building thing, is bei
ng honest with yourself.- I know how easy it is to talk yourself into say
ing "It will be alright".- If you have to spend a few dollars to rebuild
your wings do it.- It is cheaper than rebuilding your whole, completed ai
rplane wen it fails, and you will be hating yourself wishing you had rebuil
t the spars.- It is all part of the experiance.- It won't be as hard as
you think.- Put pride aside, an ounce of prevension, is worth a ton of f
ixing later.
-
Just my humble oppinion,
Shad=0A=0A=0A
Message 53
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Sun'n'Fun favor |
Hi Tom
Give me a call tonight or tomorrow, I can help you.
I'm at Sun n Fun so don't e mail me back, I wont get your message for a
couple of days.
612-805-1742
----- Original Message -----
From: TOM MICHELLE BRANT
To: pietenpol-list@matronics.com
Sent: Sunday, March 27, 2011 10:19 PM
Subject: Pietenpol-List: Sun'n'Fun favor
Anyone still reading email that's attending Sun'n'fun, I could use a
favor if you're willing.
I'm trying to get a bunch of turnbuckles from B&B but he's got
everything at Sun'n'Fun. Wondering if anyone would be willing to get me
some and promptly be reimbursed. Preferably someone from Minneapolis
area - Dick Navratril perhaps???
Later,
Tom Brant
Message 54
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I agree with Don. It's no fun re-doing something that is finished or close to it.
I have re-made fittings and re-thought my methods of construction many times.
Removing the rib upright that is epoxied to the spar is the easiest way to free
the ribs from the spar. That can be done with a coping saw or that little hack
saw blade holder you have seen me use.(web site) Then you only need to cut new
cap strips, fit in place, add gussets.
Michael Perez
Karetaker Aero
www.karetakeraero.com
--- On Mon, 3/28/11, Don Emch <EmchAir@aol.com> wrote:
> From: Don Emch <EmchAir@aol.com>
> Subject: Pietenpol-List: Re: wings
> To: pietenpol-list@matronics.com
> Date: Monday, March 28, 2011, 3:34 PM
> --> Pietenpol-List message posted
> by: "Don Emch" <EmchAir@aol.com>
>
> Hi Chuck,
>
> I really feel for you and the bad feeling you get at the
> thought of re-doing something like this. It just
> sucks!
>
> I know that Douglas Fir is supposedly stronger, but even
> the rear spars don't appear to meet the specs. I
> understand a big reason for the grain per inch spec has some
> to do with warpage, but strength is a very big issue
> too. Strength that is measureable and consistent is
> found in spar examples that meet the specs. If you
> don't meets those specs then you really don't know what you
> have.
>
> Again the whole idea of re-doing something like this
> sucks. I made center section fittings I didn't think
> were good so I dismantled the whole centersection and built
> new. Then there was the time the hangar collapsed on
> the finished airplane and I had to rebuild. It just
> sucks!
>
> Maybe you could cut the upright where the rib is glued to
> the spar and then when replacing the spar you could just
> splice in a new upright. That's how I rebuilt my
> centersection.
>
> Don Emch
> NX899DE
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=335315#335315
>
>
>
>
>
>
>
> Email Forum -
> FAQ,
> - MATRONICS WEB FORUMS -
> List Contribution Web Site -
> -Matt
> Dralle, List Admin.
>
>
>
>
Message 55
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Torque Control Tube Location |
Pictures are not necessary Gary thanks. Had not though of the windscreen.
Jack
DSM
Do not archive
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Gboothe5
Sent: Monday, March 28, 2011 12:53 PM
Subject: RE: RE: Pietenpol-List: Torque Control Tube Location
Oh, but the cable come very close to the windscreen! I can send pics later
if you want..
Gary
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 10:01 AM
Subject: RE: RE: Pietenpol-List: Torque Control Tube Location
Thanks Gary!
Jack
Do not archive
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Gboothe5
Sent: Monday, March 28, 2011 10:21 AM
Subject: RE: Pietenpol-List: Torque Control Tube Location
Jack,
I also have a 4" tilt back (swag), and the aileron portion of my assembly is
built to plans. The routing holes for the cable were done with strings and
eyeballs, but the end result is that there was plenty of room behind the
instruments; and I did not increase the length of my cabanes, making the
angle greater than those who have..not sure if that helps.
Gary Boothe
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Sent: Monday, March 28, 2011 4:10 AM
Subject: Pietenpol-List: Torque Control Tube Location
Ready to mount my control assembly. Considering the angle the aileron
cables pass through the slot in the panel base up to the center section
pulleys. I'm just guessing my wing will be 4 inches aft of perpendicular.
(Is this average for a long fuselage, C-85, split gear, heavier than average
tail) Can someone help with the calculation of how far the aileron control
horn needs to be forward of the slot in the panel base? Assuming a rise of
approximately 46" (horn to slot 22" and slot to c-section 24") and wing aft
4" equals having the horn 4" forward the slot?? Not sure I have that much
room.
Thanks!!
Jack
DSM
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 56
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Thanks, Shad. Good advice!
----- Original Message -----
From: shad bell
To: pietenpol-list@matronics.com
Sent: Monday, March 28, 2011 6:46 PM
Subject: Re: Pietenpol-List: Re: wings
Chuck, I can relate to hating having to rebuild completed parts
for your airplane. I am in the process of making new landing gear shock
struts, which were "done". The hardest part of this airplane building
thing, is being honest with yourself. I know how easy it is to talk
yourself into saying "It will be alright". If you have to spend a few
dollars to rebuild your wings do it. It is cheaper than rebuilding your
whole, completed airplane wen it fails, and you will be hating yourself
wishing you had rebuilt the spars. It is all part of the experiance.
It won't be as hard as you think. Put pride aside, an ounce of
prevension, is worth a ton of fixing later.
Just my humble oppinion,
Shad
Message 57
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Chuck, as I recall you're in Winston-Salem, right? If I were you I would
contact Eric Minnis, at the Greensboro FSDO. He's a homebuilder and very
knowledgeable. He also is NOT your typical Fed (he refers to Oklahoma City
as FAA Hindquarters). He can give you a more definitive ruling than any
DAR. He's a good guy and will tell you the truth.
Try eric.minnis@faa.gov
Jack Phillips
NX899JP "Icarus Plummet"
Raleigh, NC
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Charles
Campbell
Sent: Monday, March 28, 2011 4:01 PM
Subject: Re: Pietenpol-List: Re: wings
What do the initials DAR stand for? It's designated aircraft R-------? I'm
going to try to find the one for my area and I want it from the horse's
mouth that he won't approve my wing before I do ANYTHING.
----- Original Message -----
From: Richard <mailto:lmforge@earthlink.net> Schreiber
Sent: Monday, March 28, 2011 1:39 PM
Subject: RE: Pietenpol-List: Re: wings
Gary:
I with you on this one! It certainly would be devastating to wind out that
the spars are not acceptable. Here are a couple of possibilities.
1. Consider the spars as toast. Carefully cut the spars between each rib,
then using whatever means necessary, remove the spar materal from each of
the ribs. It would be alot of work, but certainly less than rebuilding all
of the ribs.
2. Junk the whole wing assembly and order another set of finished ribs. I
know that Edgar Howe sells a nice set of completed ribs (either the original
Pietenpol airfoil or the Riblett 612 for around $300. I know that I sure
wouldn't have the heart to redo the ribs.
Chuck, if you decide to order the ribs, Edgar can be reached at
219-508-6880. He also will be at Brodhead with ribs for sale.
Regards,
Rick Schreiber
----- Original Message -----
From: Gboothe5 <mailto:gboothe5@comcast.net>
Sent: 3/28/2011 12:16:01 PM
Subject: RE: Pietenpol-List: Re: wings
I'm trying to visualize what it must be like for Chuck, when he realizes, or
learns from his DAR or FAA inspector, that his spars are un-airworthy, and
what the possible resolves are. Is it worth trying to save all those ribs
and figure out a way to remove the spar without damaging each rib? For me it
would be, but I know others who actually enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the question and
getting some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-List
http:/
/forums.matronics.com
http://www.matronics.com/contribution
_____
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matronic
s.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
Message 58
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
One advantage to having the FSDO do the inspection is that they will do it
for free, where a DAR will charge as much as $500 for an inspection. And
the FSDO can make an absolute ruling, where the DAR will always worry about
the FSDO looking over his shoulder.
And if you can wait a couple of weeks, I can come look at it for you. I am
an EAA Tech Counselor. But I expect I can give you my ruling just from
looking at the photos. I would not fly with such spars. Nor would I glue
the ribs in place until the rest of the wing was built (and even then just
tack them in place if anything).
Jack Phillips
NX899JP "Icarus Plummet"
Raleigh, NC
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jack
Phillips
Sent: Monday, March 28, 2011 9:56 PM
Subject: RE: Pietenpol-List: Re: wings
Chuck, as I recall you're in Winston-Salem, right? If I were you I would
contact Eric Minnis, at the Greensboro FSDO. He's a homebuilder and very
knowledgeable. He also is NOT your typical Fed (he refers to Oklahoma City
as FAA Hindquarters). He can give you a more definitive ruling than any
DAR. He's a good guy and will tell you the truth.
Try eric.minnis@faa.gov
Jack Phillips
NX899JP "Icarus Plummet"
Raleigh, NC
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Charles
Campbell
Sent: Monday, March 28, 2011 4:01 PM
Subject: Re: Pietenpol-List: Re: wings
What do the initials DAR stand for? It's designated aircraft R-------? I'm
going to try to find the one for my area and I want it from the horse's
mouth that he won't approve my wing before I do ANYTHING.
----- Original Message -----
From: Richard <mailto:lmforge@earthlink.net> Schreiber
Sent: Monday, March 28, 2011 1:39 PM
Subject: RE: Pietenpol-List: Re: wings
Gary:
I with you on this one! It certainly would be devastating to wind out that
the spars are not acceptable. Here are a couple of possibilities.
1. Consider the spars as toast. Carefully cut the spars between each rib,
then using whatever means necessary, remove the spar materal from each of
the ribs. It would be alot of work, but certainly less than rebuilding all
of the ribs.
2. Junk the whole wing assembly and order another set of finished ribs. I
know that Edgar Howe sells a nice set of completed ribs (either the original
Pietenpol airfoil or the Riblett 612 for around $300. I know that I sure
wouldn't have the heart to redo the ribs.
Chuck, if you decide to order the ribs, Edgar can be reached at
219-508-6880. He also will be at Brodhead with ribs for sale.
Regards,
Rick Schreiber
----- Original Message -----
From: Gboothe5 <mailto:gboothe5@comcast.net>
Sent: 3/28/2011 12:16:01 PM
Subject: RE: Pietenpol-List: Re: wings
I'm trying to visualize what it must be like for Chuck, when he realizes, or
learns from his DAR or FAA inspector, that his spars are un-airworthy, and
what the possible resolves are. Is it worth trying to save all those ribs
and figure out a way to remove the spar without damaging each rib? For me it
would be, but I know others who actually enjoy making those crazy things!
How about you, Chuck? Are you interested in putting forth the question and
getting some ideas on how to cut the ribs loose?
Gary Boothe
http://www.matronics.com/Navigator?Pietenpol-List
http:/
/forums.matronics.com
http://www.matronics.com/contribution
_____
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matronic
s.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
http://www.matronics.com/Navigator?Pietenpol-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 59
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I might add that if you do auger in, it will be another one of those
dangerous experimental airplanes that most of the public thinks should be
outlawed. Think about the rest of us Chuck (if not yourself), build it
right or don't build it at all. We don't need any more bad press than we
already have. You owe it to the sport.
CW
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Bill Church
Sent: Monday, March 28, 2011 7:29 AM
Subject: Pietenpol-List: Re: wings
I've been biting my tongue on this one, but Chuck's responses warrant a
comment, I think.
Chuck wrote:
> I mean, if I were building a 300-HP, 300-MPH airplane this would be a
concern. The plane I'm building will probably never get to 100 MPH and will
probably never see more than 1.5 - 2.0 Gs. Give me a break!
>
1. If you were building a 300HP, 300MPH airplane, the spars would have been
designed to handle the stresses that such a plane would encounter. But
you're building a less-than-100HP, less-than-100MPH airplane that was
designed as such. The spars as indicated in the plans are sized for the
conditions that THIS airplane is expected to encounter. If you use materials
that do not meet the normally accepted standards, as set out in AC 43.13-1b,
then you are basically weakening the structure of the aircraft.
2. If you do a 60 degree banked turn, your airplane will see 2 Gs. If you
make a steeper turn, you could easily see 3 Gs or more. Add some turbulence,
and it gets even worse. General aviation light aircraft are designed to
withstand +4 Gs. Using sub-standard spars can significantly reduce the
stresses that the airframe can safely handle.
Some parts of an aircraft can withstand some damage, and manage to make it
safely back to earth. The spars are not among those parts. If a spar fails
in flight, you (and any passenger) are toast.
Hopefully the "break" you're asking for is not in one of your spars.
Give this matter some serious thought, Chuck.
Bill C.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335269#335269
Message 60
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Dave
Could you explain how you built your engine mount for that sweet looking
real airplane engine? What kind of a jig did you use, how did you stop it
from twisting when welding(is it gas or TIG welded). Details details
details and I want larger pictures. YES, I said larger pictures so I can
see some detail.
Chris
Sacramento, Ca
Westcoastpiet.com
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Dangerous
Dave
Sent: Monday, March 28, 2011 4:09 AM
Subject: Pietenpol-List: Almost done
--> <dsornbor@aol.com>
Not much more to do,should be done here shortly,dave
--------
Covering Piet
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=335240#335240
Attachments:
http://forums.matronics.com//files/2011_03_27_07_55_54_338_459.jpg
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|