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  #1  
Old 12-23-2014, 07:22 AM
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High_Flyer High_Flyer is offline
 
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Location: Saint-Jorioz, France.
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Default Edge distance issue

Hello everyone,
Yesterday I installed the rollbar on my RV-7. I then dismanteled it and saw this:




Obviously there is an edge distance issue here with the hole on the F631A channel.
These are the holes through which the AN 509-10R10 screws are going in (see pic below). The edge distance inside is good as there is another strip of aluminum F631B-L. The The F631A aft channel where the mistake is located is sandwiched between two pieces.

Is that a problem??

Thanks and Merry Christmas to all.

Alain.


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  #2  
Old 12-23-2014, 05:35 PM
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Tbone Tbone is offline
 
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Default

Keep building....it is a non issue.
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  #3  
Old 12-23-2014, 07:29 PM
lorne green lorne green is offline
 
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Location: Oliver, B.C. Canada (Okanagan valley)
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Default

That part is only critical untill you really need it. I'd shoot Vans an email with a few more pics just for peace of mind, (because I wouldn't be comfortable.) See what they say.
Regards
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Last edited by lorne green : 01-02-2015 at 05:13 PM. Reason: clarification
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  #4  
Old 12-27-2014, 01:44 AM
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JanRV6UK JanRV6UK is offline
 
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I would not worry to much about this - 'When you need it' ... as I see it ... is when you flip over (hopefully never) ... and even so ... the assembly is not going to go anywhere as it is being pushed down into the bracket.

For ultimate peace of mind ... ask Vans and let us know what they have to say ... Good luck with the rest of the build ..
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  #5  
Old 12-27-2014, 03:07 AM
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High_Flyer High_Flyer is offline
 
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Default Thanks

Thanks for the replies.
I've sent an email to Vans a couple of days ago, still waiting for a reply. I'm not expecting anything before January anyway, the guys at the mothership need a break for the festive season as well...
I will post the reply here when I get it.
Alain.
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  #6  
Old 12-27-2014, 04:33 AM
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Moondog Moondog is offline
 
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Default just did this

Just did the same thing a few days ago. This is the photo of my proposed fix to send to Vans. Will wait to see their response to you.

Found a piece of scrap aluminum the same thickness as the roll bar, and filed it to fit within the channel. After drilling for 3 rivets, used a round file on the scrap piece to open the bolt holes, deburred, then riveted. I also placed 1 rivet between the bolt holes because the outer section was trying to lift away from the thinner material.
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  #7  
Old 12-27-2014, 08:49 AM
edbooth edbooth is offline
 
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Quote:
Originally Posted by High_Flyer View Post
Thanks for the replies.
I've sent an email to Vans a couple of days ago, still waiting for a reply. I'm not expecting anything before January anyway, the guys at the mothership need a break for the festive season as well...
I will post the reply here when I get it.
Alain.
Van's normal response is that they do not approve of any changes including "screw ups" that do not meet the intent of the original design. It is up to the builder or A&P/IA to determined if the condition is safe. Just went through a similar scenario with a friends RV-9A where the fuel tank attach screw holes were dimpled without first drilling to size. All of the holes have slight stress cracks from stretching the metal.
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  #8  
Old 01-02-2015, 12:58 PM
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High_Flyer High_Flyer is offline
 
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Location: Saint-Jorioz, France.
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Default Reply from VANS, not good...

Here is the reply from VANS regarding the mistake I made on my rollbar:

"The final answer on this is the role bar chanels should be replaced so these holes will have some edge distance with the chanels.
Sterling
"

So I will order some new parts and re-do this bit

Alain.
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  #9  
Old 01-02-2015, 01:38 PM
lorne green lorne green is offline
 
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Quote:
Originally Posted by JanRV6UK View Post
I would not worry to much about this - 'When you need it' ... as I see it ... is when you flip over (hopefully never) ... and even so ... the assembly is not going to go anywhere as it is being pushed down into the bracket. "snip"
"the assembly is not going to go anywhere as it is being pushed down into the bracket" is generaly true if there is no further forward travel after a flip.
But if there is continuing forward momentum after the flip the roll bar may fold forward. Such an accident happened to a local pilot who crashed his RV9 in Penticton, British Columbia, Canada (due to fuel flow issues) a number of years ago. The forward momentum of his flipped RV9 caused the roll bar on his tipper to collapse forward causing unstated trauma to his neck and head. The poor chap didn't survive. Really tragic.
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RV 7a tip-up
Pre-cover MD-RA Inspected.
Canopy completed. Bonded with Sika-Flex.
Up on her mains, Firewall Fwd and wiring on going.

Last edited by lorne green : 01-02-2015 at 05:16 PM. Reason: clarity
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  #10  
Old 01-08-2015, 09:08 PM
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Moondog Moondog is offline
 
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Default roll bar

Scott A., not sure if I properly responded to your PM.

I was holding my email to Vans until High Flyer got a response, but somehow missed this thread when Van's response was posted.

While it doesn't look good for me, yes, Scott, I will send in to Vans anyway. What a pain, not just to re-build the roll bar, but likely to re-fabricate the match-drilled angles which support it.
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