Today's Message Index:
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1. 12:31 AM - Re: Re: Bolts for torque tube (Clif Dawson)
2. 04:37 AM - Re: Re: Bolts for torque tube (Charles N. Campbell)
3. 06:23 AM - Re: Bolts for torque tube (Pocono John)
4. 05:33 PM - DIe Spring gear (Steven Dortch)
5. 06:40 PM - Re: DIe Spring gear (Andre B. Charvet)
6. 08:42 PM - Re: DIe Spring gear (taildrags)
Message 1
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Subject: | Re: Bolts for torque tube |
Shear strength of an an3 bolt is over 2000lb. You have two at each end.
How strong did you say you were?
91% done, only 89% to go! :-)
Clif
Bacon - The duct tape of the kitchen.
I used AN4 bolts
Chris
Sacramento, CA
Message 2
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Subject: | Re: Bolts for torque tube |
Yes, I used AN3 bolts
On Sun, May 7, 2017 at 11:50 PM, taildrags <taildrags@hotmail.com> wrote:
>
> John;
>
> I was surprised to not find those called out on the plans, but I can't
> imagine that anything more than AN3s would be required there. I'm pretty
> sure that's what is on my airplane, although I can't find any photos that
> show that. The photos that I have of Ernie Moreno's airplane sure do look
> like AN3s holding down those brackets. As I say, there isn't a lot of load
> on that particular part. The tricky part is securing the bolt head to the
> underside of the floor, if you do them the way the plans call for. The
> photo of Ernie's airplane seems to indicate that his uses nutplates under
> the floor so the bolts go in from the cockpit side (top):
>
> http://www.flysquirrel.net/piets/control01.jpg
>
> --------
> Oscar Zuniga
> Medford, OR
> Air Camper NX41CC "Scout"
> A75 power, 72x36 Culver prop
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=469094#469094
>
>
Message 3
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Subject: | Re: Bolts for torque tube |
Thanks everyone. I appreciate the help.
John C
--------
John Cronin
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=469101#469101
Message 4
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Ladies and Gentlemen, and Kenny and Oscar, My piet squatted down on the
gear when I added the wings. Bigtime!
Apparently the bungees are not tight enough and/or old. I have decided to
go with the coil spring system.
Several others including William Wynne have done a spring in a can system.
It also has good reviews. I am inclined to do it the way WW describes it on
his website.
https://flycorvair.net/2015/05/01/steel-tube-pietenpol-fuselage-with-landing-gear-and-12-x-4-8-
*tires/*
The local welder looked at the system and like many non EAA types started
talking about seamless tubing and much more expensive materiel. He said he
would weld what I wanted.
I just want to confirm with those who have built it. , The interior is a
one inch rod. The Can is 2.25 ID seamed tubing. The washer inside is a 2
inch washer. The washers on the can are 2.25 washers. It is not a precisely
machined item exept the welds should be square and flush.
Anything else I need to know?
Wag Aero sells a set for $319.99 and you still have to cut it to length and
put eye holes in the ends. The spring is exposed. The system has good
reviews.
https://www.wagaero.com/wag-aero-kit-airplanes/sport-trainer/landing-gear-kit-options/sport-trainer-die-spring-shock-strut-kit-fabricated.html
Opinions invited!
--
Blue Skies,
Steve D
Message 5
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Subject: | Re: DIe Spring gear |
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Message 6
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Subject: | Re: DIe Spring gear |
Steve; my airplane has the spring struts and since it's the only Piet I've ever
flown, I have nothing to compare it to. I absolutely agree with William's opinion
that sitting taller on the gear looks better and gives a more positive 3-point
landing. The tail on my airplane sits just a bit higher than some, so
I think I get a little more float and slightly less solid 3-point landings than
if it sat higher on the mains. The springs on mine are not captive, instead
using the "Bingelis-style" sliding setup with bolts riding in slots. I've always
thought that the slots create the weakest points in this spring strut system
and they have more parts and fussing to assemble than William's "spring in
a can" arrangement.
I'm not sure where you're seeing that the Wag-Aero spring struts only cost $319.99
though. The link you provided goes to a page that shows them as $575.75.
Given that they are for the Sport Trainer which grosses at 1200+ lbs, there should
be no reason why the Wag-Aero struts won't work... and they are already
assembled and just need to be fitted to length.
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power, 72x36 Culver prop
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=469135#469135
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