Today's Message Index:
----------------------
1. 02:47 AM - Re: Drilled Bolts or Not (walt evans)
2. 05:23 AM - Ed G. and Jack P. airport lot owners (Michael D Cuy)
3. 05:24 AM - Piet Paradise (Michael D Cuy)
4. 06:49 AM - Re: Drag wires (Rick Holland)
5. 07:24 AM - Puppies and Piets (Sayre, William G)
6. 07:47 AM - Re: Added tailwheel pics to my Yahoo (Bill Church)
7. 07:48 AM - Re: Piet Paradise (Phillips, Jack)
8. 07:48 AM - Re: Drilled Bolts or Not (Phillips, Jack)
9. 07:56 AM - Re: Piet Paradise (Ed G.)
10. 08:31 AM - Piet Paradise (Oscar Zuniga)
11. 12:13 PM - Re: Drag wires (Gary Gower)
12. 12:44 PM - Re: Drag wires (Hans Vander Voort)
13. 01:35 PM - Re: Drag wires (gcardinal)
14. 02:25 PM - Re: Drag wires & other Cables (Rcaprd@aol.com)
15. 02:25 PM - Re: Drag wires (Gene Beenenga)
16. 02:42 PM - Re: Drag wires (Graham Hansen)
17. 02:49 PM - Re: Drag wires (Dale Johnson)
18. 03:09 PM - Re: Drag wires (DJ Vegh)
19. 10:01 PM - Re: Drag wires (Rick Holland)
Message 1
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| Subject: | Re: Drilled Bolts or Not |
--> Pietenpol-List message posted by: "walt evans" <waltdak@verizon.net>
Don't think the inspectors allow nylon in the engine compartment due to
heat. I used drilled with cotter pins anywhere you could see them to look
authentic. Anywhere hidden, like inside wings or fuse,,,, nylon.
Also anywhere on moving or twisting parts, controls, gear attach points,
Drilled and cotter.
walt evans
NX140DL
----- Original Message -----
From: "Catdesign" <Catdesign@intergate.com>
Sent: Thursday, March 23, 2006 2:12 AM
Subject: Pietenpol-List: Drilled Bolts or Not
> --> Pietenpol-List message posted by: "Catdesign"
> <Catdesign@intergate.com>
>
> What style of AN3-17 do we use on the lower cabaine fittings? Drilled
> shank with a castle nut or use a nyloc nut or just a plane old nut and
> washer? When is it ok to use non-drilled bolts and when should you use
> drilled (for safety wire)? I know I should know this but I don't know
> this, ya know what I mean?
>
> Chris Tracy
> Sacramento, Ca
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=23646#23646
>
>
>
Message 2
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| Subject: | Ed G. and Jack P. airport lot owners |
--> Pietenpol-List message posted by: Michael D Cuy <Michael.D.Cuy@grc.nasa.gov>
Ed and Jack--- congratulations to both of you on getting some land next to
runways !
My gosh Ed, I forget where you live now, but can I ask again ? I
complain about my $180/month hangar rent
and know that I would have to flat-bed my airplane home if the rent were
$500 as in your area. My gosh---unreal !
Mike C.
do not archive
Message 3
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--> Pietenpol-List message posted by: Michael D Cuy <Michael.D.Cuy@grc.nasa.gov>
Oh gosh Mike H........Jack likes single-malt scotch so you might want to
revise your offer from bringing a case down to "a bottle" :))
Oh Jack---I too am curious about the "sightseeing" activities that might be
available near your airport property like beaches, pools,
etc.
Mike C.
do not archive
Message 4
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Thanks Greg, how did you pre-stretch them? Hook up a come-along and a strain
gauge between a couple big trees and hope the cable doesn't break?
Rick H
On 3/22/06, gcardinal <gcardinal@mn.rr.com> wrote:
>
> *Hi Rick,*
> *Dale and I used 1/8" 7X19 galvanized cable for the drag / anti-drag
> cables on NX18235.*
> *Tested / pre-stretched to 60% of rated strength (1200#) prior to
> installation. No drawbacks.*
> **
> *Greg Cardinal*
> *Minneapolis*
>
> ----- Original Message -----
> *From:* Rick Holland <at7000ft@gmail.com>
> *To:* pietenpol-list@matronics.com
> *Sent:* Wednesday, March 22, 2006 8:39 AM
> *Subject:* Pietenpol-List: Drag wires
>
> Sorry to bring up this subject again but since the plans call for 13 gauge
> solid (I believe) drag wires and since their doesn't seem to be solid
> aircraft grade wire I took a look through the archives. Looks like people
> have used 3/32 and 1/8, (Jack, you must have the strength of the Terminator
> to bend 1x19 1/8" stainless around a thimble). Do you guys know of Piets
> that have successfully flown for many hours using 3/32" 7x7 or 7x19? If not
> then I better go for the safer (and heaver) 1/8".
>
> If 1/8" cable is used any drawbacks to using 7x19 galvanized?
>
> Thanks
> Rick H
>
> --
> Rick Holland
>
> "Logic is a wreath of pretty flowers, that smell bad"
>
>
--
Rick Holland
"Logic is a wreath of pretty flowers, that smell bad"
Message 5
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| Subject: | Puppies and Piets |
--> Pietenpol-List message posted by: "Sayre, William G" <william.g.sayre@boeing.com>
>
>You got it, Ken
>
>How are you going to fly with a dog in a Pietenpol?
>
>Jack
>
>Do Not Archive
-------------------------------------
Jack,
Just guessing, but since the Piet is so slow, maybe the leash he's using
a really really long!
Bill
Do Not Archive
Message 6
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| Subject: | Added tailwheel pics to my Yahoo |
________________________________
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of
Rcaprd@aol.com
Sent: March 22, 2006 7:16 PM
Subject: Re: Pietenpol-List: Added tailwheel pics to my Yahoo
In a message dated 3/22/2006 4:12:13 PM Central Standard Time,
eng@canadianrogers.com writes:
Chuck,
I just checked through the full set of drawings, and there is
only one size of tailskid swing arms shown. (There really are no new
details given for the "long" fuselage other than one side view of the
fuselage framework and one side view of the fuselage framework with the
plywood and turtledeck added.) The tailskid is not redrawn for the
supplemental "long fuse" plans.
So, there's likely a pretty good reason why you have never seen
any drawings of the longer one.
Bill C.
________________________________
I didn't realize there was different length swing arms for the
two different lengths fuselages either, until Brodhead '04 when I was
looking over Larry W. award winning Model A Pietenpol. He pointed out
that that's the reason for the cross bar between the Vee, up close to
where the pivot mount is, is because the swing arm would twist without
it. I've never seen any drawings of the longer one.
Chuck G.
NX770CG
Bill,
I didn't measure it, but I seem to remember that Larry's swing arm sure
looked longer. That last bay is one of the places that B.H.P. added 2".
It may be mentioned somewhere else, other than the drawings. Has anyone
else heard of the longer swing arm ?
Chuck G.
NX770CG
________________________________
Chuck,
That's a good point. The "long fuselage" is 2 7/8" longer in the last
bay than the "improved" fuselage. Logic would suggest that the tailskid
assembly mounting points would be situated in the same relative location
(i.e. directly below the last upright, on top of the 1/8" plywood gusset
plates), and as a result, the swing arms should be 2 7/8" longer for the
"long" fuselage.
I can imagine alot of builders would probably make the tailskid assembly
to the plans, then find that it doesn't quite seem right when they go to
fasten it to the plane.
The "long" fuselage plans definitely leave a bit to be desired when it
comes to details - such as a top or bottom view, or landing gear
placement, etc. I guess the builders of the long fuselage get to "learn"
more.
Bill C.
Message 7
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--> Pietenpol-List message posted by: "Phillips, Jack" <Jack.Phillips@cardinal.com>
There are plenty of pools, 22,000 acres of lake and 500 miles of
shoreline to be investigated by Pietenpol. Airport has a 3100' paved
runway, 100LL avgas, good approaches.
Jack Phillips
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Michael
D Cuy
Sent: Thursday, March 23, 2006 8:24 AM
Subject: Pietenpol-List: Piet Paradise
--> Pietenpol-List message posted by: Michael D Cuy
<Michael.D.Cuy@grc.nasa.gov>
Oh gosh Mike H........Jack likes single-malt scotch so you might want to
revise your offer from bringing a case down to "a bottle" :))
Oh Jack---I too am curious about the "sightseeing" activities that might
be
available near your airport property like beaches, pools,
etc.
Mike C.
do not archive
Working together. For life.(sm)
This message is for the designated recipient only and may contain privileged, proprietary,
or otherwise private information. If you have received it in error,
please notify the sender immediately and delete the original. Any other use
of the email by you is prohibited.
Dansk - Deutsch - Espanol - Francais - Italiano - Japanese - Nederlands - Norsk - Portuguese - Svenska: www.cardinalhealth.com/legal/email
Message 8
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| Subject: | Drilled Bolts or Not |
--> Pietenpol-List message posted by: "Phillips, Jack" <Jack.Phillips@cardinal.com>
Wherever I could, I used solid bolts with MS21042 locknuts. These nuts
are low profile, usually allowing you to use a bolt one dash number
shorter. They are also lighter than either nylon locknuts or AN316
castellated nuts but are designed to get the full strength of the bolt.
They were used throughout the F-16, back when I was working at General
Dynamics as a young engineer fresh out of college. They are all metal
and can be used throughout the airframe, including in the engine
compartment.
Jack Phillips
NX899JP
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of walt
evans
Sent: Thursday, March 23, 2006 5:45 AM
Subject: Re: Pietenpol-List: Drilled Bolts or Not
--> Pietenpol-List message posted by: "walt evans" <waltdak@verizon.net>
Don't think the inspectors allow nylon in the engine compartment due to
heat. I used drilled with cotter pins anywhere you could see them to
look
authentic. Anywhere hidden, like inside wings or fuse,,,, nylon.
Also anywhere on moving or twisting parts, controls, gear attach points,
Drilled and cotter.
walt evans
NX140DL
----- Original Message -----
From: "Catdesign" <Catdesign@intergate.com>
Sent: Thursday, March 23, 2006 2:12 AM
Subject: Pietenpol-List: Drilled Bolts or Not
> --> Pietenpol-List message posted by: "Catdesign"
> <Catdesign@intergate.com>
>
> What style of AN3-17 do we use on the lower cabaine fittings?
Drilled
> shank with a castle nut or use a nyloc nut or just a plane old nut and
> washer? When is it ok to use non-drilled bolts and when should you
use
> drilled (for safety wire)? I know I should know this but I don't know
> this, ya know what I mean?
>
> Chris Tracy
> Sacramento, Ca
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=23646#23646
>
>
>
Working together. For life.(sm)
This message is for the designated recipient only and may contain privileged, proprietary,
or otherwise private information. If you have received it in error,
please notify the sender immediately and delete the original. Any other use
of the email by you is prohibited.
Dansk - Deutsch - Espanol - Francais - Italiano - Japanese - Nederlands - Norsk - Portuguese - Svenska: www.cardinalhealth.com/legal/email
Message 9
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--> Pietenpol-List message posted by: "Ed G." <flyboy_120@hotmail.com>
Congratulations Jack...It does sound like a pilot's paradise!! Ed G.
>From: "Phillips, Jack" <Jack.Phillips@cardinal.com>
>To: <pietenpol-list@matronics.com>
>Subject: RE: Pietenpol-List: Piet Paradise
>Date: Thu, 23 Mar 2006 10:46:52 -0500
>
>--> Pietenpol-List message posted by: "Phillips, Jack"
><Jack.Phillips@cardinal.com>
>
>There are plenty of pools, 22,000 acres of lake and 500 miles of
>shoreline to be investigated by Pietenpol. Airport has a 3100' paved
>runway, 100LL avgas, good approaches.
>
>Jack Phillips
>
>-----Original Message-----
>From: owner-pietenpol-list-server@matronics.com
>[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Michael
>D Cuy
>Sent: Thursday, March 23, 2006 8:24 AM
>To: pietenpol-list@matronics.com
>Subject: Pietenpol-List: Piet Paradise
>
>--> Pietenpol-List message posted by: Michael D Cuy
><Michael.D.Cuy@grc.nasa.gov>
>
>Oh gosh Mike H........Jack likes single-malt scotch so you might want to
>
>revise your offer from bringing a case down to "a bottle" :))
>
>Oh Jack---I too am curious about the "sightseeing" activities that might
>be
>available near your airport property like beaches, pools,
>
>etc.
>
>Mike C.
>
>do not archive
>
>
>Working together. For life.(sm)
>_________________________________________________
>
>This message is for the designated recipient only and may contain
>privileged, proprietary, or otherwise private information. If you have
>received it in error, please notify the sender immediately and delete the
>original. Any other use of the email by you is prohibited.
>
>Dansk - Deutsch - Espanol - Francais - Italiano - Japanese - Nederlands -
>Norsk - Portuguese - Svenska: www.cardinalhealth.com/legal/email
>
>
Message 10
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--> Pietenpol-List message posted by: "Oscar Zuniga" <taildrags@hotmail.com>
Jack wrote-
>Anyone flying in a Pietenpol will get a huge discount.
Knowing Pietenpolers, they will expect nothing less than a 100% discount
(especially if they are TACOs). Our friend "The Fisherman" might try to
convince us that Belize is Piet Paradise, eh? And Bike.Mike wrote-
>PS Will your neighbor's daughter be home from college yet?
...and my wife heard me laughing all the way downstairs in another room ;o)
Oscar Zuniga
San Antonio, TX
mailto: taildrags@hotmail.com
website at http://www.flysquirrel.net
Message 11
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Cc: shaun-s@sbcglobal.net
Adding a little "please" will not hurt...
Go to the bottom of this mail and follow simple instructions, please.
Saludos
Gary Gower.
Shaun Smith <shaun-s@sbcglobal.net> wrote:
take me off your list
gcardinal <gcardinal@mn.rr.com> wrote: Hi Rick,
Dale and I used 1/8" 7X19 galvanized cable for the drag / anti-drag cables on
NX18235.
Tested / pre-stretched to 60% of rated strength (1200#) prior to installation.
No drawbacks.
Greg Cardinal
Minneapolis
----- Original Message -----
From: Rick Holland
To: pietenpol-list@matronics.com
Sent: Wednesday, March 22, 2006 8:39 AM
Subject: Pietenpol-List: Drag wires
Sorry to bring up this subject again but since the plans call for 13 gauge solid
(I believe) drag wires and since their doesn't seem to be solid aircraft grade
wire I took a look through the archives. Looks like people have used 3/32 and
1/8, (Jack, you must have the strength of the Terminator to bend 1x19 1/8"
stainles s around a thimble). Do you guys know of Piets that have successfully
flown for many hours using 3/32" 7x7 or 7x19? If not then I better go for the
safer (and heaver) 1/8".
If 1/8" cable is used any drawbacks to using 7x19 galvanized?
Thanks
Rick H
--
Rick Holland
"Logic is a wreath of pretty flowers, that smell bad"
---------------------------------
Message 12
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--> Pietenpol-List message posted by: Hans Vander Voort <hans.vander.voort@alfalaval.com>
One 3/32 cable is rated for 920 Lbs, one such drag wire in a Pietenpol wing
it can compensated up to 300 Lbs of drag on the wing.
There are 4 drag wires (and 4 anti-drag wires) thus 4 cables can take a
1200 Lbs load of drag.
Now I only have to figure out how my little Corvair can ever produce 1200
Lbs of thrust, :-)
Feel free to use 1/8" but 3/32" is already over engineered.
Best regards,
Hans
Message 13
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A 10' piece of steel channel, hydraulic jack, some uni-strut and all-thread were
used to construct a cable testing rig.
A pressure gauge was tapped into the hydraulic jack and calibrated to read pounds
of stress directly off the gauge.
Simply anchor the ends of the cable in the rig, pump up the jack to 1200# (for
1/8" cable) and hold for a few minutes.
Use a black felt tip marker to mark the cables at the nicopress or swage fittings
prior to stretching to see if your assemblies slip at all.
Greg Cardinal
----- Original Message -----
From: Rick Holland
To: pietenpol-list@matronics.com
Sent: Thursday, March 23, 2006 8:47 AM
Subject: Re: Pietenpol-List: Drag wires
Thanks Greg, how did you pre-stretch them? Hook up a come-along and a strain
gauge between a couple big trees and hope the cable doesn't break?
Rick H
On 3/22/06, gcardinal <gcardinal@mn.rr.com> wrote:
Hi Rick,
Dale and I used 1/8" 7X19 galvanized cable for the drag / anti-drag cables
on NX18235.
Tested / pre-stretched to 60% of rated strength (1200#) prior to installation.
No drawbacks.
Greg Cardinal
Minneapolis
----- Original Message -----
From: Rick Holland
To: pietenpol-list@matronics.com
Sent: Wednesday, March 22, 2006 8:39 AM
Subject: Pietenpol-List: Drag wires
Sorry to bring up this subject again but since the plans call for 13 gauge
solid (I believe) drag wires and since their doesn't seem to be solid aircraft
grade wire I took a look through the archives. Looks like people have used
3/32 and 1/8, (Jack, you must have the strength of the Terminator to bend 1x19
1/8" stainless around a thimble). Do you guys know of Piets that have successfully
flown for many hours using 3/32" 7x7 or 7x19? If not then I better go for
the safer (and heaver) 1/8".
If 1/8" cable is used any drawbacks to using 7x19 galvanized?
Thanks
Rick H
--
Rick Holland
"Logic is a wreath of pretty flowers, that smell bad"
--
Rick Holland
"Logic is a wreath of pretty flowers, that smell bad"
Message 14
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| Subject: | Re: Drag wires & other Cables |
In a message dated 3/23/2006 2:45:47 PM Central Standard Time,
hans.vander.voort@alfalaval.com writes:
One 3/32 cable is rated for 920 Lbs, one such drag wire in a Pietenpol wing
it can compensated up to 300 Lbs of drag on the wing.
There are 4 drag wires (and 4 anti-drag wires) thus 4 cables can take a
1200 Lbs load of drag.
Now I only have to figure out how my little Corvair can ever produce 1200
Lbs of thrust, :-)
Feel free to use 1/8" but 3/32" is already over engineered.
Best regards,
Hans
I used 3/32" for the drag / anti-drag cables, too. I also used 3/32" cable
for the lift strut cables, cabane cables, and the entire flipper control
system. The only place I used 1/8" cable is for the rudder. I used 1/16" cable
for
the flying wires on the tail, and 1/16" cable for the tailwheel, that goes
all the way up to the rudder bar..
Chuck G.
NX770CG
Message 15
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--> Pietenpol-List message posted by: Gene Beenenga <kgbunltd@earthlink.net>
-----Original Message-----
>From: gcardinal <gcardinal@mn.rr.com>
>Sent: Mar 23, 2006 3:35 PM
>To: pietenpol-list@matronics.com
>Subject: Re: Pietenpol-List: Drag wires
>
>A 10' piece of steel channel, hydraulic jack, some uni-strut and all-thread were
used to construct a cable testing rig.
>A pressure gauge was tapped into the hydraulic jack and calibrated to read pounds
of stress directly off the gauge.
>Simply anchor the ends of the cable in the rig, pump up the jack to 1200# (for
1/8" cable) and hold for a few minutes.
>Use a black felt tip marker to mark the cables at the nicopress or swage fittings
prior to stretching to see if your assemblies slip at all.
>
>Greg Cardinal
> ----- Original Message -----
> From: Rick Holland
> To: pietenpol-list@matronics.com
> Sent: Thursday, March 23, 2006 8:47 AM
> Subject: Re: Pietenpol-List: Drag wires
>
>
> Thanks Greg, how did you pre-stretch them? Hook up a come-along and a strain
gauge between a couple big trees and hope the cable doesn't break?
>
> Rick H
>
>
> On 3/22/06, gcardinal <gcardinal@mn.rr.com> wrote:
> Hi Rick,
> Dale and I used 1/8" 7X19 galvanized cable for the drag / anti-drag cables
on NX18235.
> Tested / pre-stretched to 60% of rated strength (1200#) prior to installation.
No drawbacks.
>
> Greg Cardinal
> Minneapolis
> ----- Original Message -----
> From: Rick Holland
> To: pietenpol-list@matronics.com
> Sent: Wednesday, March 22, 2006 8:39 AM
> Subject: Pietenpol-List: Drag wires
>
>
> Sorry to bring up this subject again but since the plans call for 13 gauge
solid (I believe) drag wires and since their doesn't seem to be solid aircraft
grade wire I took a look through the archives. Looks like people have used
3/32 and 1/8, (Jack, you must have the strength of the Terminator to bend 1x19
1/8" stainless around a thimble). Do you guys know of Piets that have successfully
flown for many hours using 3/32" 7x7 or 7x19? If not then I better go for
the safer (and heaver) 1/8".
>
> If 1/8" cable is used any drawbacks to using 7x19 galvanized?
>
> Thanks
> Rick H
>
> --
> Rick Holland
>
> "Logic is a wreath of pretty flowers, that smell bad"
>
>
> --
> Rick Holland
>
> "Logic is a wreath of pretty flowers, that smell bad"
Message 16
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--> Pietenpol-List message posted by: "Graham Hansen" <grhans@cable-lynx.net>
Hans,
The original plans specify 3/32" cable for the drag/antidrag bracing. I have
never heard of any breaking during normal operations.
About 15 years ago two Pietenpols met head-on, at a grass airstrip near
here, and each wound up with smashed right wings. The pilots were uninjured,
but substantial damage to both aircraft resulted. An expensive lesson, for
sure. Both a/c were soon repaired and are still in service.
No.1 Piet had 1/8" cable bracing and No.2 had 3/32" cable bracing. The wing
of No.2 was virtually destroyed and the 3/32" inboard drag cable broke. The
1/8" cable of the No.1 did not break, but did stretch somewhat, and its wing
required a leading edge section repair, a new front spar (due to evidence of
a tiny compression failure) and many rib repairs. The leading edge is much
over-strength and this resulted in damage to most of the rib nose sections
of both machines. While extensive, the damage to No.1's wing was light
compared to the wing of the other Pietenpol, which had to be totally rebuilt
with new spars, ribs, etc. The leading edge "bone" of No.2 only required a
new section about three feet long, and was the largest surviving wooden
part!
One could conclude from this episode that the 3/32" cable is adequate.
However, being of a suspicious nature, I had used 1/8" 7 x 19 galvanized
cable bracing on my Pietenpol for all internal and external wing bracing
long before the above incident happened. If I were to build another Piet
(which I won't), I would use 1/8" cable inboard and 3/32" cable for the
outboard bay in order to save a bit of weight--and I would use a sheet
aluminum, or 1/16" plywood, leading edge instead of the over-strength,
overweight "bone" for the same reason.
BTW, my own Pietenpol was not involved in this incident, and it still has
"no damage history" after 35 years (Touch wood!).
Graham Hansen (Pietenpol CF-AUN in Alberta, Canada)
Message 17
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Hi Rick
To test the cables I mounted a high pressure gauge on a bottle jack. Than mounted
the bottle jack on a I beam.
The gauge wa calibrater in 20 pound incurments. I hope this makes sense.
The cable was mounted on the I beam & jack . Than the jack was pumped up to the
required reading and left to
soak.
Dale Johnson in Mpls,
----- Original Message -----
From: Rick Holland
Sent: 3/23/2006 8:52:56 AM
Subject: Re: Pietenpol-List: Drag wires
Thanks Greg, how did you pre-stretch them? Hook up a come-along and a strain gauge
between a couple big trees and hope the cable doesn't break?
Rick H
On 3/22/06, gcardinal <gcardinal@mn.rr.com> wrote:
Hi Rick,
Dale and I used 1/8" 7X19 galvanized cable for the drag / anti-drag cables on NX18235.
Tested / pre-stretched to 60% of rated strength (1200#) prior to installation.
No drawbacks.
Greg Cardinal
Minneapolis
----- Original Message -----
From: Rick Holland
Sent: Wednesday, March 22, 2006 8:39 AM
Subject: Pietenpol-List: Drag wires
Sorry to bring up this subject again but since the plans call for 13 gauge solid
(I believe) drag wires and since their doesn't seem to be solid aircraft grade
wire I took a look through the archives. Looks like people have used 3/32 and
1/8, (Jack, you must have the strength of the Terminator to bend 1x19 1/8"
stainless around a thimble). Do you guys know of Piets that have successfully
flown for many hours using 3/32" 7x7 or 7x19? If not then I better go for the
safer (and heaver) 1/8".
If 1/8" cable is used any drawbacks to using 7x19 galvanized?
Thanks
Rick H
--
Rick Holland
"Logic is a wreath of pretty flowers, that smell bad"
--
Rick Holland
"Logic is a wreath of pretty flowers, that smell bad"
Message 18
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--> Pietenpol-List message posted by: "DJ Vegh" <dj@veghdesign.com>
> Now I only have to figure out how my little Corvair can ever produce 1200
> Lbs of thrust, :-)
hmmm I see visions of a torque rolling Piet! actually I just installed an
AC brushless motor into my RC Piet model and the thrust is nearly 45oz. on
a model that weighs in at about 36oz.... hmm do the math! I've hovered
that little Piet (vertical) for about a minute straight... talk about a
strange sight!
DJ
Message 19
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Graham
When I was talking to William Wayne about his Piet crash he mentioned that
the impact caused his 3/32" flying strut cables to break (the nicopress
held). He recommended 1/8" cable for these.
Rick H
On 3/23/06, Graham Hansen <grhans@cable-lynx.net> wrote:
>
> --> Pietenpol-List message posted by: "Graham Hansen" <
> grhans@cable-lynx.net>
>
> Hans,
>
> The original plans specify 3/32" cable for the drag/antidrag bracing. I
> have
> never heard of any breaking during normal operations.
>
> About 15 years ago two Pietenpols met head-on, at a grass airstrip near
> here, and each wound up with smashed right wings. The pilots were
> uninjured,
> but substantial damage to both aircraft resulted. An expensive lesson, for
> sure. Both a/c were soon repaired and are still in service.
>
> No.1 Piet had 1/8" cable bracing and No.2 had 3/32" cable bracing. The
> wing
> of No.2 was virtually destroyed and the 3/32" inboard drag cable broke.
> The
> 1/8" cable of the No.1 did not break, but did stretch somewhat, and its
> wing
> required a leading edge section repair, a new front spar (due to evidence
> of
> a tiny compression failure) and many rib repairs. The leading edge is much
> over-strength and this resulted in damage to most of the rib nose sections
> of both machines. While extensive, the damage to No.1's wing was light
> compared to the wing of the other Pietenpol, which had to be totally
> rebuilt
> with new spars, ribs, etc. The leading edge "bone" of No.2 only required a
> new section about three feet long, and was the largest surviving wooden
> part!
>
> One could conclude from this episode that the 3/32" cable is adequate.
> However, being of a suspicious nature, I had used 1/8" 7 x 19 galvanized
> cable bracing on my Pietenpol for all internal and external wing bracing
> long before the above incident happened. If I were to build another Piet
> (which I won't), I would use 1/8" cable inboard and 3/32" cable for the
> outboard bay in order to save a bit of weight--and I would use a sheet
> aluminum, or 1/16" plywood, leading edge instead of the over-strength,
> overweight "bone" for the same reason.
>
> BTW, my own Pietenpol was not involved in this incident, and it still has
> "no damage history" after 35 years (Touch wood!).
>
> Graham Hansen (Pietenpol CF-AUN in Alberta, Canada)
>
>
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
>
--
Rick Holland
"Logic is a wreath of pretty flowers, that smell bad"
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