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  #11  
Old 04-16-2018, 08:34 PM
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RV8JD RV8JD is offline
 
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Quote:
Originally Posted by bruceh View Post
Good job!

I was wondering about the lightening holes in the tip-up frame. I don't think I've ever seen that done before.
Good eye! Isn't that the roll-over structure for the tip-ups? The lightening holes would certainly degrade the strength if nothing else was done to compensate in some other way.
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  #12  
Old 04-16-2018, 10:09 PM
Turbo69bird Turbo69bird is offline
 
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Quote:
Originally Posted by RV8JD View Post
Good eye! Isn't that the roll-over structure for the tip-ups? The lightening holes would certainly degrade the strength if nothing else was done to compensate in some other way.
I’d think you’d certainly want to dimple them for strength. We did that in drag cars and Pontiac did it on superduty frames in the 60s it degraded strength to the point they had to put 2x4s in the frames when they flipped them on the assembly line so they wouldn’t break.

I’d like to know more about the mod though.

It’s nice to have a light airplane, that’s for sure.
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  #13  
Old 04-17-2018, 08:16 AM
edbooth edbooth is offline
 
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Quote:
Originally Posted by RV8JD View Post
Good eye! Isn't that the roll-over structure for the tip-ups? The lightening holes would certainly degrade the strength if nothing else was done to compensate in some other way.
The lighting holes that I see are only in the part that holds the shape on the rear of the tip up canopy, not in the rollover framework itself.
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  #14  
Old 04-17-2018, 11:04 AM
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Big Iron 09 Big Iron 09 is offline
 
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Congrats to Tom! Beautiful job on the build!
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  #15  
Old 04-17-2018, 04:09 PM
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Pat Hatch Pat Hatch is offline
 
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Default Lightening Holes

A couple of comments about Tom's lightening holes in the canopy frame that Tom asked me to clarify. As Ed pointed out, the lightening holes are only in the canopy frame, not in the roll-over structure. Tom's comment was that not only was this part of his weight reduction plan, but also he wanted to lighten the overall weight of the canopy so that it would be easier to open and close.

Here are a few photos that illustrate this:





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  #16  
Old 04-17-2018, 05:30 PM
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RV8JD RV8JD is offline
 
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Default Lightening Holes

Quote:
Originally Posted by Pat Hatch View Post
A couple of comments about Tom's lightening holes in the canopy frame that Tom asked me to clarify. As Ed pointed out, the lightening holes are only in the canopy frame, not in the roll-over structure. Tom's comment was that not only was this part of his weight reduction plan, but also he wanted to lighten the overall weight of the canopy so that it would be easier to open and close.

Here are a few photos that illustrate this:
Thanks for the clarification and the pics.
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Arlington, WA (KAWO)
RV-8, 290 Tach Hours
(Pic 1),(Pic 2)
- Out with the Old, In with the New
(Pic)
RV-8, 1938 Tach Hours (Pic 1),(Pic 2) - Sold

Glasflügel H-201B Standard Libelle, N564NS - Sold
Rolladen-Schneider LS1-f, N61MP - No longer owned
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  #17  
Old 04-17-2018, 06:38 PM
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ColoRv ColoRv is offline
 
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It is a beautiful RV. Wish he had been there for the ceremony. It's always nice to shake a hand and see the grin.
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  #18  
Old 04-18-2018, 06:46 AM
dmat dmat is offline
 
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Congrats, beautiful ship!
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