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Simplified Slider Removal

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mikerv6a(at)ao-cs.com
Guest

Posted: Tue May 08, 2012 8:31 am Post subject: Simplified Slider Removal

I wanted to find a way to simplify the task of removal of

the sliding canopy. The picture shows the details.

I shortened the sliding canopy rear anchor assemblies (C665 and C677)

at left and right to leave a gap between these anchors and the rear of

the canopy roller tracks (C657), so that the canopy can slide aft by

about an extra 15/16". This is sufficient to permit lifting the canopy

rollers clear of the track for removal. I added a quick-release pin at

each side to stop the canopy travel at the normal distance. The

quick-release pins are installed in added plastic blocks that are

mounted alongside the new gaps, so that removal of the pins opens the

gaps for removal of the canopy. See picture.



Mike Linse, RV-6A slow-build, Corvallis, OR

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JLuckey(at)pacbell.net
Guest

Posted: Tue May 08, 2012 12:38 pm Post subject: Simplified Slider Removal

That is pretty cool but let me play devil's advocate for a minute:



I wonder about the strength of the plastic used to hold the pin.  How strong

is that stuff and would aluminum be a better choice for durability? When the

canopy gets "slammed" open it would put a lot of force on the pin & its

holder.

Jeff Luckey

RV-7A, slow build, starting wings

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mikerv6a(at)ao-cs.com
Guest

Posted: Tue May 08, 2012 1:24 pm Post subject: Simplified Slider Removal

Hi Jeff



I did consider the slammed-canopy question.



The plastic blocks are acetal, AKA delrin, and they are very strong,

although not as strong as aluminum parts of similar dimensions. I

tested by mounting a prototype block in a vise, with a bolt in place

of the quick-release pin, and I hit the "pin" with a hammer repeatedly

with increasing force until the block broke. It took a considerable

blow to break the plastic. A slammed-open canopy would be landing

against two blocks, and there is some small compliance in the canopy

that might make such an event a bit softer than a hammer blow.

Aluminum blocks would be about the same machining task, and stronger.

Plastic blocks could be made with a more purely rectangular shape,

with the result that they would be much harder to break. If I ever

break one, that might be my response.



I have found this arrangement very convenient during my canopy and

cockpit work, and it's a change that's relatively easy to do in a

finished plane.



Mike Linse

[quote] 

 That is pretty cool but let me play devil's advocate for a minute:

 I wonder about the strength of the plastic used to hold the pin.  How

 strong

 is that stuff and would aluminum be a better choice for durability? When

 the

 canopy gets "slammed" open it would put a lot of force on the pin & its

 holder.



 Jeff Luckey

 RV-7A, slow build, starting wings

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johnd(at)wlcwyo.com
Guest

Posted: Tue May 08, 2012 2:09 pm Post subject: Simplified Slider Removal

I did pretty much the same thing to my RV-6 back in 2002. I used a piece of aluminum angle that I used as a stop. 

I drilled a hole thru the angle and tapped the structure below and used a screw to fasten the angle in place.



John L. Danielson

 



 



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panamared505(at)brier.net
Guest

Posted: Wed May 09, 2012 3:23 am Post subject: Simplified Slider Removal

How does the canopy get slammed open?  Why?



I've been flying with my slider for 10+ years, never has it been slammed 

open!



Bob

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aerobubba(at)earthlink.ne
Guest

Posted: Thu May 10, 2012 1:38 am Post subject: Simplified slider removal

I can't see the photo's, and am not perfectly clear on all the objectives of this design mod, but my choice was to replace the bolt that holds the roller in the frame with a quick release pin.  Not only is the canopy quick and easy to remove, but it can be done in flight, if need be... 



Glen Matejcek

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Dale Ensing

Joined: 11 Jan 2006
Posts: 571
Location: Aero Plantation Weddington NC

Posted: Thu May 10, 2012 9:39 am Post subject: Simplified Slider Removal

I had the same question in my mind. In  eight years I have not experienced that.



Sent from my iPhone



On May 9, 2012, at 7:29, "Panama Red" <panamared505(at)brier.net> wrote:



[quote] 

 

 How does the canopy get slammed open?  Why?

 

 I've been flying with my slider for 10+ years, never has it been slammed open!

 

 Bob

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_________________
Dale Ensing
RV-6A
Aero Plantation
Weddington NC

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