Today's Message Index:
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1. 03:48 AM - Re: AN 115 Cable Shackle (Paul Mulwitz)
2. 05:05 AM - Re: AN 115 Cable Shackle (jaybannist@cs.com)
3. 05:25 AM - Re: AN 115 Cable Shackle (Paul Mulwitz)
4. 06:47 AM - Re: AN 115 Cable Shackle (MHerder)
5. 08:36 AM - Re: AN 115 Cable Shackle (Steve Freeman)
6. 03:33 PM - Re: AN 115 Cable Shackle (Bryan Martin)
Message 1
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| Subject: | AN 115 Cable Shackle |
I agree with Rick. Torque doesn't matter here - only getting the right finished
length on the "Pin".
One little trick I learned on this assembly. You have to connect this through
the inspection hole and you can't see what you are doing very well. After much
frustration I figured out the two ends of the hole drilled in the bolt are at
different "Heights" on the thread. You need to tighten the nut so the "Higher"
end is clear of the nut so you can insert the cotter pin. This can be easier
if you mark the "Higher" side of the bolt with a felt tip marker so you can
insert the cotter pin without being able to see your work.
Paul
-----Original Message-----
From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Rick Lindstrom
Sent: Wednesday, September 08, 2010 9:50 PM
Subject: Re: Zenith-List: AN 115 Cable Shackle
Hi, Mike!
I don't think that standard torque values apply when using bolts as pivots, so
I'd torque it down until you achieve the desired clearance, and then use a castellated
nut cotter pinned in place through the hole in the bolt. (You DO have
a hole in the bolt, right?)
A bushing? Only if more than normal wear is anticipated.
Just my opinion(s).
Rick
ZenVair N42KP
-----Original Message-----
>From: MHerder <michaelherder@beckgroup.com>
>Sent: Sep 8, 2010 9:14 PM
>To: zenith-list@matronics.com
>Subject: Zenith-List: AN 115 Cable Shackle
>
>
>WHen using an an 115 cable shackle, and torquing to the specified value for an
AN 3, it is clamping to my aileron bellcrank and causing a bit of binding. Is
it ok not to torque to full value if using a castellated nut? Should a bushing
be used?
>
>--------
>One Rivet at a Time!
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=311898#311898
>
>
Message 2
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| Subject: | Re: AN 115 Cable Shackle |
One little trick I learned on this assembly - make all the aileron bellcr
ank connections BEFORE you close the wing.
Jay Bannister
Message 3
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| Subject: | AN 115 Cable Shackle |
Hi Jay,
That is a great trick I figured out too. Unfortunately, it only works the
first time you put your plane together.
With the NTSB pronouncement and my decision to ground my XL I wound up
taking the wings off for storage in the corners of my hangar. Once you
connect up the balance cable you are stuck connecting and disconnecting the
cables through the tiny access holes in the wing skin. The most memorable
feature of this task is you can't see what you are doing because your hand
and arm are in the way. It gets worse when the cotter pin just refuses to
go all the way through the bolt hole and out the other side.
The good news is after you have done this miserable job a few times it gets
easier and quicker.
Paul
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of
jaybannist@cs.com
Sent: Thursday, September 09, 2010 4:56 AM
Subject: Re: Zenith-List: AN 115 Cable Shackle
One little trick I learned on this assembly - make all the aileron bellcrank
connections BEFORE you close the wing.
Jay Bannister
Message 4
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| Subject: | Re: AN 115 Cable Shackle |
Thanks all, by the way I'm also using castellated nyloc nuts just as an added safety
measure in case a cotter pin is ever forgotten. I wouldn't want to rely
on it without the cotter pin but it's better than nothing. They area available
from spruce for about 1.20 each for an AN-3. I've decided to use them on all
control cable bolts as a belts/suspenders approach. Just wanted to let ya'll
know that they exist.
See below.
Manufactured to standard castle or shear nut specifications with a nylon insert
added for positive safety. Use it throughout the control system. Should the cotter
pin used with castle nuts be overlooked, the nut cannot work loose. The
nylon insert will act as a stop nut.
Part No. Thread Size Price Each Buy
MS17825-3 10.32 $1.24
--------
One Rivet at a Time!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=311916#311916
Message 5
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| Subject: | AN 115 Cable Shackle |
What NTSB pronouncement are you referring to? I lost track of the "wing
flutter" issue for reasons to long and boring to go in to here. Is that
what this is about? I never did hear the final resolution on that.
Thank you,
Steve Freeman
Building Again (semi-scratch - I can't make a canopy and I don't know how to
weld) 650
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of Paul Mulwitz
Sent: Thursday, September 09, 2010 5:21 AM
Subject: RE: Zenith-List: AN 115 Cable Shackle
Hi Jay,
That is a great trick I figured out too. Unfortunately, it only works the
first time you put your plane together.
With the NTSB pronouncement and my decision to ground my XL I wound up
taking the wings off for storage in the corners of my hangar. Once you
connect up the balance cable you are stuck connecting and disconnecting the
cables through the tiny access holes in the wing skin. The most memorable
feature of this task is you can't see what you are doing because your hand
and arm are in the way. It gets worse when the cotter pin just refuses to
go all the way through the bolt hole and out the other side.
The good news is after you have done this miserable job a few times it gets
easier and quicker.
Paul
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of
jaybannist@cs.com
Sent: Thursday, September 09, 2010 4:56 AM
Subject: Re: Zenith-List: AN 115 Cable Shackle
One little trick I learned on this assembly - make all the aileron bellcrank
connections BEFORE you close the wing.
Jay Bannister
Message 6
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| Subject: | Re: AN 115 Cable Shackle |
You don't torque a fastener used in a cable shackle, you turn it down to a point
that gives you enough clearance to prevent binding and allows the cotter pin
to be inserted through the castle nut so it can't back off. Use one or two washers
if necessary. You should always use a drilled shank bolt and castle nut
when the bolt is used as a pivot point, never a nylock or similar lock nut alone.
On Sep 9, 2010, at 12:14 AM, MHerder wrote:
>
> WHen using an an 115 cable shackle, and torquing to the specified value for an
AN 3, it is clamping to my aileron bellcrank and causing a bit of binding.
Is it ok not to torque to full value if using a castellated nut? Should a bushing
be used?
>
> --------
> One Rivet at a Time!
>
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
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