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Old 02-25-2013, 09:45 AM
Rick K Rick K is offline
Join Date: Feb 2013
Location: Bishop, CA
Posts: 15
Default RV-14 Tank Attachment Nut Plates

Hi guys, new builder here with a quick question. I'm just to the point of riveting on the K1100-08 tank attach nut plates to the wing spar and I'm wondering what others have done here. I found that the 3.5 rivet length is way too short, and I was a little worried about the unsupported rivet length within the nut plate dimple. In addition the countersink detail shows no dimple in the nut plate rivet attach points.

I called Vans and their suggestion was to use a longer rivet and not worry about the unsupported rivet length since it's just a nut plate, or to pound the dimples out. It looks like the longer rivet would mean using a 4.5 or 5, which are in short supply in the kit. pounding out all those dimples seems like a lot of work, with easy potential to damage the nut plate. So, for those who've already tread this ground, what did you do here? How did it work out for you?
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Old 02-25-2013, 01:26 PM
mcattell mcattell is offline
Join Date: Feb 2006
Location: Forest Grove, OR
Posts: 239


You should have received some other nutplates that haven't already been dimpled that you can use. I only received a few that were pre-dimpled. In previous kits you had to dimple your own when it was required. I was surprised to see that they actually provided some already dimpled. It shouldn't be a big deal to use a vice to flatten them if you can't find any that aren't dimpled. That's what I'd do.
Mark - Forest Grove, OR (Homebase KHIO)
Flying RV-9A N962MC
EAA Tech Advisor - Ham AI7MC
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Old 02-25-2013, 08:48 PM
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Aerosporty Aerosporty is offline
Join Date: Apr 2008
Location: Lawrenceville GA
Posts: 94

Anywhere the callout is for a flush rivet, you should dimple or countersink. This includes the nut plates (dimple). This was per a Vans representative, when I asked why some holes were indicated to be dimpled in the plan, and others, that needed to be were not.

I think we are expected to get smarter, as we progress
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Old 02-25-2013, 09:55 PM
Rick K Rick K is offline
Join Date: Feb 2013
Location: Bishop, CA
Posts: 15

Thanks for the responses guys. Your right on the money Mark, I was sent the wrong hardware, K1100-8Ds in both bags and no K1100-8s at all. I tried pressing them flat but it put a bend in them and compressed the holes, so I'd need to drill them out before use. I'm just going to call in the morning and get the right stuff. Not sure why I wasn't told I was trying to use the wrong hardware when I called Vans.
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