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  #1  
Old 12-12-2018, 07:54 AM
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Draker Draker is offline
 
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Location: Livermore, CA
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Default Edge distance for F-796B

I've gone through a couple of angles, having a heckuva time getting correct edge distance on the F-796B angle that holds the fuel tank attach bracket. This angle nestles against the F-902 bulkhead in such a way that maintaining edge distance on the lower (#12 screw) hole is impossible. I'll see if I can get some pics of my "best" effort. Lots of scrap being produced on this one. Any tips? Anyone have a picture of a correctly constructed piece?
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Ryan Drake
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  #2  
Old 12-12-2018, 08:39 AM
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wirejock wirejock is offline
 
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Default F796B L&R

I have a couple photos and a description on my blog if it helps. I do remember it was a pain. More pain trying to get at the nuts. I made a set of this wall sockets for that. Buy sockedits from the Thrift Store and grind them down. Cheap tools.
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Larry Larson
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http://wirejockrv7a.blogspot.com
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Donated 12/27/2018. Plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #3  
Old 12-12-2018, 08:56 AM
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Draker Draker is offline
 
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Default

Thanks again, Larry. Yours actually looks as close to the edge as mine. Might have to double check my measurement. Iím still afraid once I open it up to #12 I bust distance.
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Ryan Drake
Livermore, CA
https://stiletto.smugmug.com/RV7
Donated 1/2/2019
RV-7A: Empennage and wing kits complete minus fiberglass, fuselage in progress!
N12VD reserved!
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  #4  
Old 12-12-2018, 09:19 AM
PilotjohnS PilotjohnS is offline
 
Join Date: Jan 2016
Location: Southwest
Posts: 647
Default Who you gonna call?

I had the same dilemma, even ordered parts to remake. But a quick email to Vans and they replied with a return phone call and we found an adequate solution. Great service from Vans support. And now it is documented, so if there ever is a question, I have an official response.
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WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.

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  #5  
Old 12-12-2018, 09:44 AM
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wirejock wirejock is offline
 
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Default 796

Quote:
Originally Posted by Draker View Post
Thanks again, Larry. Yours actually looks as close to the edge as mine. Might have to double check my measurement. Iím still afraid once I open it up to #12 I bust distance.
Ryan
Keep us posted. If it's nested right in the space there's nothing else that can be done. A call to Vans to document as mentioned might be in order. I still think I hit the edge distance because I always mark parts before drilling.
That said, there's several places on the fuse where it was impossible and I asked Vans to confirm.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/27/2018. Plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #6  
Old 12-12-2018, 11:14 AM
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mfleming mfleming is offline
 
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Location: Joseph, Oregon
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Default

Quote:
Originally Posted by PilotjohnS View Post
I had the same dilemma, even ordered parts to remake. But a quick email to Vans and they replied with a return phone call and we found an adequate solution. Great service from Vans support. And now it is documented, so if there ever is a question, I have an official response.
So for all the builders that we see this thread and have the same dilemma ....please share Vanís solution
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Joseph, OR
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  #7  
Old 12-18-2018, 11:27 AM
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Draker Draker is offline
 
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Default

Advice from Vans was to get as much edge distance as possible.

If you do the math itís actually impossible to get sufficient distance:

According to the plans, the holes must be centered 15/32" from the forward edge of the angle. Since this is 3/4" angle, this means the hole must be centered 3/4Ē minus 15/32" = 9/32" from the aft edge of the angle. The plans also suggest the center of the hole is approx. 9/32Ē vertically from the top edge.

The final size of these holes will be 3/16" and #12. A 3/16" hole centered 9/32Ē from an edge leaves 3/16Ē edge distance which is obviously too small. Thatís the best case if youíre right on the money with your drilling. Best I got was 5/32Ē and Iím going to leave that as is.
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Ryan Drake
Livermore, CA
https://stiletto.smugmug.com/RV7
Donated 1/2/2019
RV-7A: Empennage and wing kits complete minus fiberglass, fuselage in progress!
N12VD reserved!
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  #8  
Old 12-18-2018, 08:53 PM
Tommy123 Tommy123 is offline
 
Join Date: Jul 2018
Location: Naples fl
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Default

I can't understand why vans uses fractions when industry standard is thousands of a inch. It's not like the scales are rare.
I worked at falcon jet for a few weeks, **** millimeters!
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