Today's Message Index:
----------------------
1. 04:06 AM - Re: axle travel distance (helspersew@aol.com)
2. 05:37 AM - Re: Do back seat backs need to be glued? (Dortch, Steven D MAJ NG NG FORSCOM)
3. 05:50 AM - (Douwe Blumberg)
4. 08:38 AM - Re: Do back seat backs need to be glued? (Jack Phillips)
5. 09:12 AM - Re: Do back seat backs need to be glued? (69racerx@comcast.net)
6. 09:30 AM - Do seat backs need to be glued? (Oscar Zuniga)
7. 09:47 AM - Re: Do seat backs need to be glued? (Gary Boothe)
8. 09:47 AM - Re: Do back seat backs need to be glued? (Gary Boothe)
9. 09:53 AM - Re: Do seat backs need to be glued? (kevinpurtee)
10. 10:02 AM - Re: Re: Do seat backs need to be glued? (Jack Phillips)
11. 10:26 AM - Re: rudder bar (bender)
12. 11:16 AM - Re: Do seat backs need to be glued? (Ryan Mueller)
13. 11:17 AM - Re: Re: Do seat backs need to be glued? (Ryan Mueller)
14. 01:22 PM - Control surfaces (pineymb)
15. 01:34 PM - Re: pulley size (Kringle)
16. 01:55 PM - Re: pulley size (kevinpurtee)
17. 02:13 PM - Re: pulley size (Kringle)
18. 02:25 PM - Re: Re: pulley size (Ryan Mueller)
19. 02:34 PM - Re: Control surfaces (Chris)
20. 02:51 PM - Re: WW (cdpratt)
21. 03:04 PM - Ryan Mueller (Chris)
22. 03:10 PM - Re: Re: WW (david pratt)
23. 03:13 PM - Re: pulley size (Billy McCaskill)
24. 03:34 PM - Re: Re: pulley size (Rick Holland)
25. 03:49 PM - Re: Re: pulley size (Chris)
26. 04:35 PM - Re: pulley size (kevinpurtee)
27. 04:43 PM - Re: Control surfaces (kevinpurtee)
28. 04:44 PM - Re: pulley size (Kringle)
29. 04:52 PM - Re: Re: pulley size (Ryan Mueller)
30. 04:56 PM - Re: pulley size (kevinpurtee)
31. 04:57 PM - Re: Do back seat backs need to be glued? (kevinpurtee)
32. 05:23 PM - cooling eyebrows (Douwe Blumberg)
33. 05:23 PM - Re: Re: Do back seat backs need to be glued? (gboothe5@comcast.net)
34. 05:37 PM - Weight and balance calculations (Woodflier@aol.com)
35. 05:49 PM - Re: cooling eyebrows (Billy McCaskill)
36. 06:32 PM - Re: cooling eyebrows (Jack Phillips)
37. 06:33 PM - Re: Weight and balance calculations (Jack Phillips)
38. 07:57 PM - Re: Re: pulley size (Clif Dawson)
39. 08:35 PM - cloth used for Fiberglass fuel tank (TOM MICHELLE BRANT)
40. 10:05 PM - Re: cloth used for Fiberglass fuel tank (Doug Dever)
Message 1
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| Subject: | Re: axle travel distance |
Hi Douwe,
My safety cables are set up to allow about 3" of travel. I also have nuts o
n the end of my anti-axle rotation tubes for redundancy. How are you going
to pad the loop?
Dan Helsper
Poplar Grove, IL.
-----Original Message-----
From: Douwe Blumberg <douweblumberg@earthlink.net>
Sent: Sat, Jan 15, 2011 12:27 pm
Subject: Pietenpol-List: axle travel distance
Hey,
Not sure if you guys with split axles can help, but anybody with a straight
axle gear
I=99m making a retaining/safety loop to keep the axle down and our of
the fuselage (and my big wheels out of the lift struts) in case of bungee
breakage and want to know what is a good maximum amount of vertical travel
to allow the axle.
I like my bungees pretty tight. It looks to me like 3=9D should do?
Especially if the loop is well padded to absorb any shock if it does hit.
Thanks,
Douwe
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Message 2
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| Subject: | Re: Do back seat backs need to be glued? |
Wow what a tiny world. John, I have been lurking this list for several years. I
would like to get a Piet someday. Oscar is the one who hooked me.
Where did you get the piet? and how is the Ercoupe doing (for the listers John
did a beautiful restoration of an Ercoupe and has piddled around with several
other older planes.)
Welcome to the list.
Blue Skies,
Steve (Stuck in Basra, Iraq) D
----- Original Message -----
From: John Kuhfahl <kuhlcouper@gmail.com>
Subject: Pietenpol-List: Do back seat backs need to be glued?
> Hi, John here. I am new to list--looks great!
> I am restoring a Piet built in the 70's--having a ball and will
> have lots of
> questions.
> Can I screw the seat backs rather than glue as I found them? A lot
> easieraccess.
> Thanks in advance.
> BTW I am an A&P and specialize in Continental engines.
>
> --
> John Kuhfahl, Lt Col USAF (Ret),
> PresIident, KUHLCOUPER LLC
Message 3
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Don, I'm sticking with the wood gear, but I had to rebuild the wheels and
axle because of the damage. While I was at it, I used the same basic brake
design (a drum brake, inside the wire wheel, which I'm gonna cover this time
round) except moved up from go-cart brakes to golf cart brakes, which are
much better quality and larger, though I'm sure they still won't hold those
big wheels. The only other thing I'm changing is my anti-rotation set up
and changing to a travel limiting arched tube rather than a cable, as I've
read about a cable swage giving way on one when someone's bungees broke.
I'll try to get some photos this week, once I get the airbox back on the
carb.
Douwe
Message 4
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| Subject: | Do back seat backs need to be glued? |
John, as Gary mentioned, the seats provide just about the only shear bracing
in the entire fuselage (the firewall is the only other bracing). Mike Cuy
made an access panel in his rear seatback, but as I recall he left the
perimeter of the seatback intact and cut out an opening for access. Other
people (myself included) have provided an access panel under the belly to
allow access to the elevator bellcrank area.
If you used enough screws to attach the seat back it would probably provide
enough strength, but I found the rear seatback to be too far forward of the
bellcrank to really allow easy access. I put the panel between the two
bottom stringers that I added, spanning between the rear seat bulkhead and
the next cross piece in the fuselage as shown in the picture below:
This area is then covered with a sheet of .025" aluminum. A total of 18
screws hold the panel in place. It comes off every year for the Condition
Inspection, to allow inspection and lubrication of the bellcrank area.
Jack Phillips
NX899JP "Icarus Plummet"
Raleigh, NC
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of John Kuhfahl
Sent: Saturday, January 15, 2011 7:52 PM
Subject: Pietenpol-List: Do back seat backs need to be glued?
Hi, John here. I am new to list--looks great!
I am restoring a Piet built in the 70's--having a ball and will have lots of
questions.
Can I screw the seat backs rather than glue as I found them? A lot easier
access.
Thanks in advance.
BTW I am an A&P and specialize in Continental engines.
--
John Kuhfahl, Lt Col USAF (Ret),
PresIident, KUHLCOUPER LLC
Message 5
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| Subject: | Do back seat backs need to be glued? |
Hello i'm new to the group. I'm Patrick ,my dad and I are restoring an old Piet.
I'm in need of prop data so I can carve a prop for the model A. Can anyone
help me find this ? We have thf fuselage and tail group ready for cover and
will be starting on the wings soon. Thanks. Patrick
Message 6
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| Subject: | Do seat backs need to be glued? |
John asked-
> Can I screw the seat backs rather than glue as I found them?
> A lot easier access.
As others have mentioned, the seat backs are structural and add
rigidity and diaphragm strength like bulkheads. But my rear seat
back has a hinged cutout for access to the elevator walking beam,
my ELT and antenna, and the small baggage pouch on the inside rear
of my seat. Come on over and look at it this afternoon ;o)
For others on the list who may not know, John lives at my home
field of San Geronimo Airpark. We hope to fly together one of
these days!
Oscar Zuniga
Air Camper NX41CC "Scout"
San Antonio, TX
website at http://www.flysquirrel.net
Message 7
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| Subject: | Do seat backs need to be glued? |
Look out, John!! Oscar seems like a nice guy on the list, but I hear he's
ruthless in the sky!!
Gary Boothe
Do not archive
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Oscar Zuniga
Sent: Sunday, January 16, 2011 9:27 AM
Subject: Pietenpol-List: Do seat backs need to be glued?
John asked-
> Can I screw the seat backs rather than glue as I found them?
> A lot easier access.
As others have mentioned, the seat backs are structural and add
rigidity and diaphragm strength like bulkheads. But my rear seat
back has a hinged cutout for access to the elevator walking beam,
my ELT and antenna, and the small baggage pouch on the inside rear
of my seat. Come on over and look at it this afternoon ;o)
For others on the list who may not know, John lives at my home
field of San Geronimo Airpark. We hope to fly together one of
these days!
Oscar Zuniga
Air Camper NX41CC "Scout"
San Antonio, TX
website at http://www.flysquirrel.net
Message 8
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| Subject: | Do back seat backs need to be glued? |
Patrick,
You are at exactly right place!! And good for you & your dad! This time last
year I carved my own prop, which you can see at www.westcoastpiet.com. I
used the prop carving information available from Dan Helsper,
helspersew@aol.com, who also carved his prop for a Model A powered Piet, and
did an excellent job of cataloguing it. P.F. Beck is also an excellent
resource, pfbeck@bellsouth.net, as he carved his prop for a Corvair powered
Piet (and didn't even break the crank once, yet).
My prop-carving project took about 40 hrs of work. Good luck to you, and
don't forget to send The List pictures of your project and progress!!
Gary Boothe
Cool, Ca.
Pietenpol
WW Corvair Conversion, Running!
Tail done, Fuselage on gear
(23 ribs down.)
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of
69racerx@comcast.net
Sent: Sunday, January 16, 2011 9:10 AM
Subject: RE: Pietenpol-List: Do back seat backs need to be glued?
Hello i'm new to the group. I'm Patrick ,my dad and I are restoring an old
Piet. I'm in need of prop data so I can carve a prop for the model A. Can
anyone help me find this ? We have thf fuselage and tail group ready for
cover and will be starting on the wings soon. Thanks. Patrick
Message 9
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| Subject: | Re: Do seat backs need to be glued? |
He shot at me.
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327198#327198
Message 10
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| Subject: | Re: Do seat backs need to be glued? |
One of my favorite quotes from Winston Churchill is:
"Nothing is so exhilarating as being shot at without result."
Jack Phillips
NX899JP "Icarus Plummet"
Raleigh, NC
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of kevinpurtee
Sent: Sunday, January 16, 2011 12:51 PM
Subject: Pietenpol-List: Re: Do seat backs need to be glued?
<kevin.purtee@us.army.mil>
He shot at me.
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327198#327198
Message 11
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far out...
thanks for measuring
jeff
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327200#327200
Message 12
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| Subject: | Re: Do seat backs need to be glued? |
Beware za blue und yellow Texan!!
Ryan
do not archive
On Sun, Jan 16, 2011 at 11:41 AM, Gary Boothe <gboothe5@comcast.net> wrote:
>
> Look out, John!! Oscar seems like a nice guy on the list, but I hear he's
> ruthless in the sky!!
>
> Gary Boothe
> Do not archive
>
>
> -----Original Message-----
> From: owner-pietenpol-list-server@matronics.com
> [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Oscar
> Zuniga
> Sent: Sunday, January 16, 2011 9:27 AM
> To: Pietenpol List
> Subject: Pietenpol-List: Do seat backs need to be glued?
>
>
>
> John asked-
>
> > Can I screw the seat backs rather than glue as I found them?
> > A lot easier access.
>
> As others have mentioned, the seat backs are structural and add
> rigidity and diaphragm strength like bulkheads. But my rear seat
> back has a hinged cutout for access to the elevator walking beam,
> my ELT and antenna, and the small baggage pouch on the inside rear
> of my seat. Come on over and look at it this afternoon ;o)
>
> For others on the list who may not know, John lives at my home
> field of San Geronimo Airpark. We hope to fly together one of
> these days!
>
> Oscar Zuniga
> Air Camper NX41CC "Scout"
> San Antonio, TX
> website at http://www.flysquirrel.net
>
>
Message 13
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| Subject: | Re: Do seat backs need to be glued? |
While tracers bouncing off the pavement at night is rather
beautiful.....amen to that! :)
Ryan
do not archive
On Sun, Jan 16, 2011 at 11:58 AM, Jack Phillips <pietflyr@bellsouth.net>wrote:
> pietflyr@bellsouth.net>
>
> One of my favorite quotes from Winston Churchill is:
>
> "Nothing is so exhilarating as being shot at without result."
>
> Jack Phillips
> NX899JP "Icarus Plummet"
> Raleigh, NC
>
> -----Original Message-----
> From: owner-pietenpol-list-server@matronics.com
> [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of
> kevinpurtee
> Sent: Sunday, January 16, 2011 12:51 PM
> To: pietenpol-list@matronics.com
> Subject: Pietenpol-List: Re: Do seat backs need to be glued?
>
> <kevin.purtee@us.army.mil>
>
> He shot at me.
>
> --------
> Kevin "Axel" Purtee
> NX899KP
> Austin/Georgetown, TX
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=327198#327198
>
>
Message 14
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| Subject: | Control surfaces |
Hoping to save a lot of research by throwing this question out there.
What are the approximate degrees of deflection (up and down, left and right) on
all control surfaces?
Thanks in advance.
--------
Adrian M
Winnipeg, MB
Canada
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327209#327209
Message 15
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I was about to order the two 2" pulleys in the wing center section for the aileron
control cable. I found this post in the archives and it appears that people
are using the MS24566 Phenolic Pulleys. In the aircraft spruce catalog it
states "shall not be installed on frequently used aircraft controls to bend the
cable more than 15 degrees from a straight line". It appears to me on the prints
that the pulley would bend the cable somewhat just short of 90 degrees.
Should they be used?
--------
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327211#327211
Message 16
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Not to be flip, but it's not a certified aircraft so you can use those pulleys
if you wish. I don't think I've ever heard of anyone having cable failure by
using the pulleys specified in the plans.
I hesitate to make a personal recommendation because I'm frightened the airplane
may hear me and decide it's un-airworthy all of a sudden.
(sorry)
Let your conscious be your guide. This is another topic where we'll get responses
ranging from "the plans are ok" to "you're going to die."
Kevin
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327212#327212
Message 17
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So what is the alternative?
--------
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327214#327214
Message 18
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Not having a Pietenpol as beautiful as Fat Bottomed Girl? Just a guess...dunno
Do not archive
------Original Message------
From: Kringle
Sender: owner-pietenpol-list-server@matronics.com
ReplyTo: Pietenpol List
Subject: Pietenpol-List: Re: pulley size
Sent: Jan 16, 2011 4:11 PM
So what is the alternative?
--------
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327214#327214
Ryan Mueller
Message 19
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| Subject: | Control surfaces |
This is from Mike Cuy for the elevators.
http://westcoastpiet.com/images/Mike%20Cuy%20A-65%20Piet/images/Piet_elevato
r_travel_sketch.jpg
Aileron are limited by the stick hitting your knees.
Chris
Sacramento, Ca
Westcoastpiet.com
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of pineymb
Sent: Sunday, January 16, 2011 1:20 PM
Subject: Pietenpol-List: Control surfaces
Hoping to save a lot of research by throwing this question out there.
What are the approximate degrees of deflection (up and down, left and right)
on all control surfaces?
Thanks in advance.
--------
Adrian M
Winnipeg, MB
Canada
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327209#327209
Message 20
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Hello
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327218#327218
Message 21
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Ryan
I sent a message a couple of days ago to your gmail account. Did you get
it?
Chris
Sacramento, Ca
Westcoastpiet.com
Message 22
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I will have ,Just checking to see if i had this all working.=0A=0A=0A=0A=0A
________________________________=0AFrom: cdpratt <cdpratt@att.net>=0ATo: pi
etenpol-list@matronics.com=0ASent: Sun, January 16, 2011 5:49:30 PM=0ASubje
att" <cdpratt@att.net>=0A=0AHello=0A=0A=0A=0A=0ARead this topic online here
:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=327218#327218=0A=0A=0A
===================
Message 23
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... or choosing a different aircraft to build, or not building an airplane at all
and taking up needle point or flower arranging instead.
--------
Billy McCaskill
Urbana, IL
tail section almost done, starting on ribs soon
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327222#327222
Message 24
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How about "build it to the plans" AND "you are going to die"
do not archive
On Sun, Jan 16, 2011 at 2:53 PM, kevinpurtee <kevin.purtee@us.army.mil>wrote:
> kevin.purtee@us.army.mil>
>
> Not to be flip, but it's not a certified aircraft so you can use those
> pulleys if you wish. I don't think I've ever heard of anyone having cable
> failure by using the pulleys specified in the plans.
>
> I hesitate to make a personal recommendation because I'm frightened the
> airplane may hear me and decide it's un-airworthy all of a sudden.
> (sorry)
>
> Let your conscious be your guide. This is another topic where we'll get
> responses ranging from "the plans are ok" to "you're going to die."
>
> Kevin
>
> --------
> Kevin "Axel" Purtee
> NX899KP
> Austin/Georgetown, TX
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=327212#327212
>
>
--
Rick Holland
Castle Rock, Colorado
"Logic is a wreath of pretty flowers, that smell bad"
Message 25
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I have never heard anyone complain about cable wear in the wings so I am
using 2" pulleys and have no worries about it. I figure I will inspect the
cables where they bend and replaces if necessary.
Chris
Sacramento, Ca
Westcoastpiet.com
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Kringle
Sent: Sunday, January 16, 2011 1:33 PM
Subject: Pietenpol-List: Re: pulley size
I was about to order the two 2" pulleys in the wing center section for the
aileron control cable. I found this post in the archives and it appears
that people are using the MS24566 Phenolic Pulleys. In the aircraft spruce
catalog it states "shall not be installed on frequently used aircraft
controls to bend the cable more than 15 degrees from a straight line". It
appears to me on the prints that the pulley would bend the cable somewhat
just short of 90 degrees. Should they be used?
--------
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327211#327211
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Sorry, John. We're being cheeky again. I think many folks (including myself)
use the 2" pulleys with no issues. If you're uncomfortable with that you'll need
to redesign the system to accommodate the larger pulleys. I am NOT an expert
on cable control systems, but I have successfully built and flown a Pietenpol
with a plans-built control system.
Up to you, my brother. If 2" pulleys is the only sin you commit I'll test fly
it for you if you'll let me. Heck, I'll fly off the 40 hours.
for what it's worth
Kevin
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
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http://forums.matronics.com/viewtopic.php?p=327228#327228
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| Subject: | Re: Control surfaces |
I built it per the plans and I have no idea what the angles are. When I rack it
over in an 80 degree bank the ailerons really don't deflect very much. It needs
some rudder when I do that, though. Not sure what the angle on the rudder
is, either.
No idea on the elevator. I've never run out.
I didn't answer your question specifically but I can say that I don't get anywhere
close to full deflection and yet get pretty sprightly performance from an
airplane I named "Fat Bottomed Girl."
I'm out of town or I'd got measure it for you.
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
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I have no problems keeping with the plans. So the caution about using this pulley
is because of cable issues and not the strength of the pulley?
--------
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327230#327230
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Since the empirical evidence says it is good to go....then maybe the catalog
might be disregarded.....
On Sun, Jan 16, 2011 at 6:42 PM, Kringle <Mrkringles@msn.com> wrote:
>
> I have no problems keeping with the plans. So the caution about using this
> pulley is because of cable issues and not the strength of the pulley?
>
> --------
> John
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=327230#327230
>
>
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Right. We can check with the A&Ps but I'm willing to bet it has nothing to do
with the pulleys.
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327231#327231
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| Subject: | Re: Do back seat backs need to be glued? |
Hey Gary, I'll build the rest of your ribs if you'll carve me a prop!
:)
do not archive
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327234#327234
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| Subject: | cooling eyebrows |
Cracking of aluminum eyebrows seems rampant, and I was wondering. would
another thin metal be more crack resistant? Thin steel wouldn't add much
weight, and might re less prone to harden and crack? I don't mind a little
extra weight on the nose anyhow.
I know the attach points to the cylinder nuts need to be steel so they don't
crush over time, and I know the attach straps should rivet onto the shroud
itself on a large surface using many rivets to distribute the vibration.
Was just rethinking the whole material idea
Douwe
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| Subject: | Re: Do back seat backs need to be glued? |
Deal!
------Original Message------
From: Kevin Purtee
Sender: owner-pietenpol-list-server@matronics.com
ReplyTo: pietenpol-list@matronics.com
Subject: Pietenpol-List: Re: Do back seat backs need to be glued?
Sent: Jan 16, 2011 4:55 PM
Hey Gary, I'll build the rest of your ribs if you'll carve me a prop!
:)
do not archive
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327234#327234
Sent on the Sprint Now Network from my BlackBerry
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| Subject: | Weight and balance calculations |
Weighed the airplane today, and was real pleased that the empty weight came
out out to be 634 lbs.
In doing the weight and balance calculations back home, I find that I'm
close to the rear limit of 20" aft of the leading edge when my big butt is in
the rear seat. I used the center of the rear seat as the CG of the occupant
but I'm seeing that a more accurate location of the occupant's CG is under
the navel, or in my case, an inch or so aft of the front of the seat
bottom. If that's the case, I'm within the aft limit.
Any thoughts on this or am I just avoiding the fact that I really need to
lose a few lbs myself?
Matt Paxton
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| Subject: | Re: cooling eyebrows |
Sounds like a reasonable idea to me Douwe, but then again I'm not an A&P, metallurgist,
or engineer. Other more knowledgeable list members should definitely
comment on this.
--------
Billy McCaskill
Urbana, IL
tail section almost done, starting on ribs soon
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| Subject: | cooling eyebrows |
I doubled the thickness of the aluminum in my shrouds and went to 5052,
which is a more fatigue resistant alloy that 3003. We'll see how long they
last.
Jack Phillips
NX899JP "Icarus Plummet"
Raleigh, NC
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Douwe
Blumberg
Sent: Sunday, January 16, 2011 8:22 PM
Subject: Pietenpol-List: cooling eyebrows
Cracking of aluminum eyebrows seems rampant, and I was wondering. would
another thin metal be more crack resistant? Thin steel wouldn't add much
weight, and might re less prone to harden and crack? I don't mind a little
extra weight on the nose anyhow.
I know the attach points to the cylinder nuts need to be steel so they don't
crush over time, and I know the attach straps should rivet onto the shroud
itself on a large surface using many rivets to distribute the vibration.
Was just rethinking the whole material idea
Douwe
Message 37
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| Subject: | Weight and balance calculations |
Sounds like you're in good shape, Matt. The pilot's belt buckle is the
accepted cg location of the pilot. Mine is a bit aft of 20" aft of the LE.
I'm at 34% of chord, or about 20.4" aft of the LE, and it flies just fine.
Jack Phillips
NX899JP "Icarus Plummet"
Raleigh, NC
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of
Woodflier@aol.com
Sent: Sunday, January 16, 2011 8:35 PM
Subject: Pietenpol-List: Weight and balance calculations
Weighed the airplane today, and was real pleased that the empty weight came
out out to be 634 lbs.
In doing the weight and balance calculations back home, I find that I'm
close to the rear limit of 20" aft of the leading edge when my big butt is
in the rear seat. I used the center of the rear seat as the CG of the
occupant but I'm seeing that a more accurate location of the occupant's CG
is under the navel, or in my case, an inch or so aft of the front of the
seat bottom. If that's the case, I'm within the aft limit.
Any thoughts on this or am I just avoiding the fact that I really need to
lose a few lbs myself?
Matt Paxton
Message 38
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Don't they all have that caveat? There I am, all that time
ago, becoming consternated myself thinking, "OK, just
what pulleys can I use then?" Including phenolic ones
that looked just like the ones in the plans! So I said
"The hell with it!" And was going to order the things
anyway after returning from Arlington that year. As
luck would have it I came back with all the pulleys in
the plane and a couple extra for good measure! But
they are all 3".
If you're concerned though, take a look at that front
pulley on the stick. That ain't no 15!!
Something tells me you're right. It's probably that
hairpin thing.
Clif
> Right. We can check with the A&Ps but I'm willing to bet it has nothing
> to do with the pulleys.
> Kevin "Axel" Purtee
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| Subject: | cloth used for Fiberglass fuel tank |
Anyone make their tank from fiberglass? What's the best cloth to use - see
ms there are many advantages and disadvantages to each style.
Tom B.
Message 40
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| Subject: | cloth used for Fiberglass fuel tank |
I'd use a satin weave=2C (more glass to resin ratio) and use a vinyl ester
resin. (not affected by fuel). Just my .02
Doug Dever
In beautiful Stow Ohio
From: tmbrant@msn.com
Subject: Pietenpol-List: cloth used for Fiberglass fuel tank
Anyone make their tank from fiberglass? What's the best cloth to use - see
ms there are many advantages and disadvantages to each style.
Tom B.
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