Author: "Ken Simmons" <ken@...> Time: Mon Mar 22, 2004 7:38 am PST Link
I'm trying to fit the flap brace/flap using the temp rivet method that Dan Checkoway wrote up.
The issue I have is countersinking the flap brace. It's basically impossible to countersink this without enlarging the holes some. Yes the thickness is .040, but the countersink has to be deep enough for a dimpled skin not just a rivet. It seems these rivets would experience some significant shear load the way the brace is installed.
It seems I would have had the same problem when doing the flap side of the hinge/flap spar. I just don't recall it. Am I making to big a deal of this?
Thanks.
Ken
RV-8
Author: "lindbergs52" <lindbergs1@...> Time: Tue Mar 23, 2004 3:25 am PST Link
Ken: Just countersink the spar or flap brace enough for a rivet, no
larger. Seems counter-intuitive (sorry for the pun) but the dimpled
skin fits just fine when riveted. That is what Bruce at Van's told me
when I asked about this problem. That's what I've been doing and it
works just fine. It is Boeing's policy, too, he told me. If one
countersinks too deeply the rivet will expand to fill the void and
the shop head will disappear into the hole. Steve
--- In vansairforce@yahoogroups.com, "Ken Simmons" <ken@t...> wrote:
> I'm trying to fit the flap brace/flap using the temp rivet method
that Dan Checkoway wrote up.
>
> The issue I have is countersinking the flap brace. It's basically
impossible to countersink this without enlarging the holes some. Yes
the thickness is .040, but the countersink has to be deep enough for
a dimpled skin not just a rivet. It seems these rivets would
experience some significant shear load the way the brace is
installed.
>
> It seems I would have had the same problem when doing the flap side
of the hinge/flap spar. I just don't recall it. Am I making to big a
deal of this?
>
> Thanks.
> Ken
> RV-8