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  #11  
Old 04-02-2013, 07:32 PM
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tkatc tkatc is offline
 
Join Date: Nov 2007
Location: NJ
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Quote:
Originally Posted by scard View Post
Mine is finally cut and drilled. Cutting doesn't bother me at all, but that drilling plexi still makes me nervous. After drilling holes, I "debur" them with a conical grinding stone. I also carefully inspect every hole with 10x magnification. You would be amazed what you see. I fix all hole edge imperfections before further movement. It takes me a lot longer to inspect both sides of each hole and debur than it does to drill. I think that kind of care will go a long way toward avoiding a potential crack much further down the road. Or I could be all wet .
Pictures!, or it didn't happen!
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  #12  
Old 04-02-2013, 10:25 PM
xblueh2o xblueh2o is offline
 
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Not necessarily a Todd's question but a general canopy drilling question. I understand the theory behind ensuring the holes and hole edges are dressed smooth. My question is, what about flame polishing? I am still a very long way away from working with the canopy but just curious if there is a specific reason for not doing it? I am here to learn.
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  #13  
Old 04-03-2013, 10:14 AM
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scard scard is offline
 
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Quote:
Originally Posted by xblueh2o View Post
Not necessarily a Todd's question but a general canopy drilling question. I understand the theory behind ensuring the holes and hole edges are dressed smooth. My question is, what about flame polishing? I am still a very long way away from working with the canopy but just curious if there is a specific reason for not doing it? I am here to learn.
Actually, I think an important part of drilling the plexi very, very slow (slow pressure, not necessarily rpm) is the fact that the drill bit clearly heats up enough to ever so slightly melt the edges of the hole by the time it pops out the other side. You can see it under magnification. That is about as far as I would be willing to go with the concept of "flame polishing" .
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  #14  
Old 04-21-2013, 08:43 AM
cholladay cholladay is offline
 
Join Date: Feb 2007
Location: San Antonio
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Sika flex it, no holes required. No holes no rivets no rivets no cracks. Last I heard this was Todd's recommendation also.
Respectfully
Recovering canopy cracker
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  #15  
Old 04-21-2013, 11:06 AM
David Paule David Paule is offline
 
Join Date: Dec 2009
Location: Boulder, CO
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Quote:
Originally Posted by xblueh2o View Post
My question is, what about flame polishing? I am still a very long way away from working with the canopy but just curious if there is a specific reason for not doing it? I am here to learn.
There's an article about it in "27 Years of the RVator" that strongly recommends not to do it.

Dave
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  #16  
Old 09-27-2013, 08:01 PM
mspenc45 mspenc45 is offline
 
Join Date: Aug 2012
Location: Tucson, AZ
Posts: 42
Default Difference in shape? Todds vs standard

Can anyone tell me if the Todd's RV-8 canopy is the same, or a different shape than a standard canopy. I am having Bruce's make me a cover and they have never heard of a Todd's and asked me to measure it for them.
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  #17  
Old 09-27-2013, 08:20 PM
DaAV8R DaAV8R is offline
 
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Location: Lee's Summit, MO
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Originally Posted by mspenc45 View Post
Can anyone tell me if the Todd's RV-8 canopy is the same, or a different shape than a standard canopy. I am having Bruce's make me a cover and they have never heard of a Todd's and asked me to measure it for them.
I saw photo posted in another thread not long ago that I think shows the two different canopies. I'm not familiar with the airplanes but I believe the left is a factory canopy and the plane on the right is a Todd's. Maybe someone will come along that can confirm this.

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  #18  
Old 09-27-2013, 08:40 PM
gblanck gblanck is offline
 
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Location: Redwood City, CA
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Default local canopy to measure

I have a Todd's canopy on my -8 -- still in the garage at home, not far from Bruce in Sunnyvale. At some point I'll be buying one of his covers for my -8 (already have one for my bonanza).

The shape is different. In the past they've come out to local airports to measure specific airplanes. If they'd like a local example to measure let me know.

-Greg
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  #19  
Old 09-27-2013, 09:11 PM
mspenc45 mspenc45 is offline
 
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Location: Tucson, AZ
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Thanks guys! That's what I had heard, and the photo shows that the Todds is more of a tear drop shape than the bubble shape. I'll mention you offer to him Greg. Is the canopy in place on your project?
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  #20  
Old 09-27-2013, 09:17 PM
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Scremm Scremm is offline
 
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Location: Eliot, Maine
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I've got a Todd's canopy on my 8A and my Bruce's cover fits just fine. 335hours on the Hobbs.
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