[rebel-builders] Rebel Elevator Reinforcement
Posted: Sun Feb 19, 2012 4:17 pm
Craig
For the "rib inside the outboard rib", I just put a doubler on the
inboard side of the rib. The doubler is just a strip of metal with one
90 degree bend to make a flange onto the spar. You have one extra rivet
into the spar and two or more joining the doubler to the (vertical
forward and aft side) face of the rib. That prevents the rib from
rotating on the original one rivet that it had into the spar.
Put another way. Looking vertically down onto the assembly. The forward
flange of the original rib points outboard and is rivetted to the spar.
Add the doubler and you now also have a flange pointing inboard and
rivetted to the spar.
Happy New Year to all.
Ken
Craig Walls wrote:
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For the "rib inside the outboard rib", I just put a doubler on the
inboard side of the rib. The doubler is just a strip of metal with one
90 degree bend to make a flange onto the spar. You have one extra rivet
into the spar and two or more joining the doubler to the (vertical
forward and aft side) face of the rib. That prevents the rib from
rotating on the original one rivet that it had into the spar.
Put another way. Looking vertically down onto the assembly. The forward
flange of the original rib points outboard and is rivetted to the spar.
Add the doubler and you now also have a flange pointing inboard and
rivetted to the spar.
Happy New Year to all.
Ken
Craig Walls wrote:
Hi All! Happy New Year!!
I'm working on the elevators and I'm ready to add the extra reinforcement
pieces at the outboard end. There are 2 flat pieces that tuck up between
the rib and skin (no problem) and there's one that looks like a rib that
fits inside the rib.
My question is: is there a pattern floating around somewhere for that piece
that goes inside the rib or do I get my first lesson in fabbing curved
aluminum parts?
Update: I still haven't finished the fin. After two tries I was sick of
it. Luckily, I'm having success with the rudder and elevators! I do think
I know where I screwed it up, though. Now I'm trying to decide if I want to
just use some flat stock and put creases in it or pay MAM $144 ea for them.
Cheers, Craig
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