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Ron B. 02-06-2013 07:07 PM

3M tape
Just reading up on double flush riveting. I see that Van's is now recomending 3M double sided tape for the trailing edge bonding instead of Proseal. I haven't purchased any tape and thought I was going to use messy Proseal. Anyone use the 3M F9460 PC VHB tape Van's is suggesting ?
I noticed the VA-140 now has lightening holes in them and was thinking they would just fill with Proseal. The tape would solve this problem.
Something else to order?

Mike S 02-06-2013 07:56 PM

I have used 3M VHB tape before, and it holds very well, but it is pretty high $$$

Luke D 02-06-2013 08:27 PM

We use this stuff quite a bit. We get a lot of stuff from Uline, and they usually have pretty good prices so we get tape them too:

Let me know if you find it cheaper somewhere.

Gash 02-06-2013 09:50 PM

Slightly off topic...sorry. I'm thinking about using this tape to attach some ozite carpet to my dash. Do you think there would be any problems with the tape off-gassing and causing problems with the windscreen plexiglass?

Iluke 02-07-2013 07:42 AM

Just curious, but where did you see that Vans is now recommending tape instead of proseal for double-flush riveting. I assume you're talking about training edges?

Ron B. 02-07-2013 10:28 AM

It's in the RV-14 instructions at the begining of the wing manual, where they describe different techniques on riveting, glassing and so on. And yes it replaces Proseal for, trailing edges only.

rvbuilder2002 02-07-2013 06:40 PM

This doesn't mean that proseal is now considered unacceptable.
It just means that in the interest of continuing to make improvements to the kits, something different was tried so that the processes would be less messy. And unlike proseal, it requires very little wait time before you can do the riveting.

dspender 02-08-2013 05:25 AM

I plan to order my 14 kit soon. What is double flush riveting?

KCBerner 02-08-2013 06:46 AM

Double flush riveting

Originally Posted by dspender (Post 742290)
I plan to order my 14 kit soon. What is double flush riveting?

It is a riveting technique used for trailing edges where both heads are set flush. It's described in Ch 5 of the planns you'll get with your kit but I recommend that you get at least one each of Vans practice kits before starting your plane. They're cheap and mistakes don't matter. Double flush riveting is done on the control surface practice kit.

EAA sheet metal class is helpful for learning these techniques too. Will save you much $ in the end.

Lionclaw 02-08-2013 01:19 PM

Could someone describe the process from the RV-14 manual? I'm trying to imagine how to ensure the trailing edge is perfectly straight when applying the tape. With proseal, you have time to clamp it to a straight edge.

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