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Correcting canopy spread?

 
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a.s.elliott(at)cox.net
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PostPosted: Sat Oct 18, 2008 6:56 am    Post subject: Correcting canopy spread? Reply with quote

Despite fitting quite well during construction, now that I am getting close to flying I find that the rear of my canopy has spread a bit, may 1/2". This makes it more difficult to close and secure the canopy.

I was wondering if anyone had tried to adjust the rear canopy bow *after* getting the whole thing together and installed?

I was thinking of two methods. Both require measuring the existing spread first.

[1] Loosen the front screws. Completely unscrew the canopy from the rear bow and attempt to remove the bow from the frame. Then attempt to carefully squeeze the bow to tighten it 1/2".

or

[2] Remove the canopy from the plane. Loosen all the screws a bit. Place canopy sideways on a ground pad and carefully push down on the rear of the frame until the set changes by 1/2".

I would appreciate comments on these proposals, and of course any additional (especially proven) ideas.

Thanks,
Andy Elliott, Mesa, AZ
N601GE (registered)
601XL/TD, Corvair, finishing...
[quote][b]


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leo(at)zuehlfield.com
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PostPosted: Sat Oct 18, 2008 8:21 am    Post subject: Correcting canopy spread? Reply with quote

Andrew, The bow is SOOO easy to kink, yes I know. Remove it, pack it
with sand, tweek it and reinstall.

Leo Gates
N601Z - CH601HDS TDO
Rotax 912UL

Dr. Andrew Elliott wrote:
Quote:
Despite fitting quite well during construction, now that I am getting
close to flying I find that the rear of my canopy has spread a bit,
may 1/2". This makes it more difficult to close and secure the canopy.

I was wondering if anyone had tried to adjust the rear canopy bow
*after* getting the whole thing together and installed?

I was thinking of two methods. Both require measuring the existing
spread first.

[1] Loosen the front screws. Completely unscrew the canopy from the
rear bow and attempt to remove the bow from the frame. Then attempt
to carefully squeeze the bow to tighten it 1/2".

or

[2] Remove the canopy from the plane. Loosen all the screws a bit.
Place canopy sideways on a ground pad and carefully push down on the
rear of the frame until the set changes by 1/2".

I would appreciate comments on these proposals, and of course any
additional (especially proven) ideas.

Thanks,
Andy Elliott, Mesa, AZ
N601GE (registered)
601XL/TD, Corvair, finishing...
Leo Gates

N601Z - CH601HDS TDO
Rotax 912UL


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Gig Giacona



Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

PostPosted: Sat Oct 18, 2008 8:49 am    Post subject: Re: Correcting canopy spread? Reply with quote

I've had the same problem and haven't fixed it yet but I've been thinking that a possible fix would be to add a crossbar connected to the rear bow.

This would fix the spacing issue and allow for the attachment of a hold down strap or safety wire much like the one Jay just posted.


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W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR
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gfmjr_20(at)HOTMAIL.COM
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PostPosted: Sat Oct 18, 2008 12:52 pm    Post subject: Correcting canopy spread? Reply with quote

Andy--
 I had the same problem and added a cross bar. When adding the cross bar I made
two brackets which were riveted to the rear bow. On one bracket I drilled a hole for
an anchoring bolt to one end of the added cross bar and on the other bracket I cut a slot
to anchor the other end of the cross bar. This slot will allow for future needed adjustments.
For the cross bar I used a piece of 6061 the same diameter as the rear bow. I flatened the
ends in a vice and drilled the required holes. I used an3 bolts with stopnuts to secure the ends.
An added advantage is that the bar acts as a handy way to pull the canopy down.

George May
6t01XL 912s  238 hrs

From: a.s.elliott(at)cox.net
To: zenith-list(at)matronics.com
Subject: Correcting canopy spread?
Date: Sat C 18 Oct 2008 07:55:28 -0700

.ExternalClass {background-position:left top;font-size:11pt;margin-left:10px;color:#000000;background-repeat:no-repeat;font-family:Courier New;} Despite fitting quite well during construction C now that I am getting close to flying I find that the rear of my canopy has spread a bit C may 1/2".  This makes it more difficult to close and secure the canopy.
 
I was wondering if anyone had tried to adjust the rear canopy bow *after* getting the whole thing together and installed?
 
I was thinking of two methods.  Both require measuring the existing spread first.
 
[1] Loosen the front screws.  Completely unscrew the canopy from the rear bow and attempt to remove the bow from the frame.  Then attempt to carefully squeeze the bow to tighten it 1/2".
 
or
 
[2] Remove the canopy from the plane.  Loosen all the screws a bit.  Place canopy sideways on a ground pad and carefully push down on the rear of the frame until the set changes by 1/2".
 
I would appreciate comments on these proposals C and of course any additional (especially proven) ideas.
 
Thanks C
Andy Elliott C Mesa C AZ
N601GE (registered)
601XL/TD C Corvair C finishing...
Quote:


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See how Windows Mobile brings your life togetho/msnnkwxp1020093182mrt/direct/01/' target='_new'>See Now [quote][b]


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Gig Giacona



Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

PostPosted: Mon Oct 20, 2008 8:26 am    Post subject: Re: Correcting canopy spread? Reply with quote

George, It's Monday and I'm having trouble picturing the bracket (which seems like a REAL good idea). DO you have any photos?
gfmjr_20(at)HOTMAIL.COM wrote:
Andy--
�I had the same problem and added a cross bar. When adding the cross bar I made
two brackets which were riveted to the rear bow. On one bracket I drilled a hole for
an anchoring bolt to one end of the added cross bar and on the other bracket I cut a slot
to anchor the other end of the cross bar. This slot will allow for future needed adjustments.
For the cross bar I used a piece of 6061 the same diameter as the rear bow. I flatened the
ends in a vice and drilled the required holes. I used an3 bolts with stopnuts to secure the ends.
An added advantage is that the bar acts as a handy way to pull the canopy down.

George May
6t01XL 912s� 238 hrs


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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR
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