java
Well Known Member
So I've searched the archives, and found lots of stuff about modifying the bottom of the rudder, how to get at the nut holding the tailspring in the mount, and whether to powdercoat or not, but for the life of me I can't figure out how to drill the mount to the second most rearward fuse bulkhead (F-711).
I have a QB, and F-712 was only attached with a few pop rivets, so I've drilled them out and removed it. F-711, however, is fully riveted in place, and something tells me I'm supposed to be able to do this without drilling out all those nice flush AN426's. I can get a drill inside the tailcone to matchdrill through the holes on the two "prongs" (can't remember their numbers), but how do I hold the tailspring mount in position on the backside of F-711 while I'm drilling?
Do I measure from the plans and drill one of the holes with the mount outside the tailcone (i.e. on the drill press), then bolt in place through that one hole to hold the part to match drill the other?
What did you QB builders do?
Thanks in advance.
I have a QB, and F-712 was only attached with a few pop rivets, so I've drilled them out and removed it. F-711, however, is fully riveted in place, and something tells me I'm supposed to be able to do this without drilling out all those nice flush AN426's. I can get a drill inside the tailcone to matchdrill through the holes on the two "prongs" (can't remember their numbers), but how do I hold the tailspring mount in position on the backside of F-711 while I'm drilling?
Do I measure from the plans and drill one of the holes with the mount outside the tailcone (i.e. on the drill press), then bolt in place through that one hole to hold the part to match drill the other?
What did you QB builders do?
Thanks in advance.