Re: Wing root fairing cinch bolt
Every really old plane I have seen (read that "looks like it is still original) had the slot head screw. As was said before, the slot heads are a royal PITA. I put a piece of brass tube under the screw head and a washer to move the screw head out to the hole (it is set WAY DOWN in the TE hole) which makes it much easier to keep the driver in the slot, but if I can find some long (longer the better) allen head screws i will switch to that.
One hint is to take the screws (whatever kind you have) and grind off the threads on the end for about 1/2". That gives you a pilot to go into the threaded fitting down in the hole. Be sure to clean up the first thread so it doesn't cross thread.
As for the filler I have drawings to make new ones (both the pre and post war versions.....they are different). You are NOT supposed to drive screws through the bands into the filler wedge!!! It is supposed to float between the wing and fuselage and top and bottom of the band. It is only secured by one small nail into the fuselage wood longeron wedge at the small tab on top.
Hank
Every really old plane I have seen (read that "looks like it is still original) had the slot head screw. As was said before, the slot heads are a royal PITA. I put a piece of brass tube under the screw head and a washer to move the screw head out to the hole (it is set WAY DOWN in the TE hole) which makes it much easier to keep the driver in the slot, but if I can find some long (longer the better) allen head screws i will switch to that.
One hint is to take the screws (whatever kind you have) and grind off the threads on the end for about 1/2". That gives you a pilot to go into the threaded fitting down in the hole. Be sure to clean up the first thread so it doesn't cross thread.
As for the filler I have drawings to make new ones (both the pre and post war versions.....they are different). You are NOT supposed to drive screws through the bands into the filler wedge!!! It is supposed to float between the wing and fuselage and top and bottom of the band. It is only secured by one small nail into the fuselage wood longeron wedge at the small tab on top.
Hank
Comment