140 ailerons
Posted: Wed May 06, 2026 8:22 pm
I have a 1946 140 serial number 9440. Are the aileron push rods bent or straight?
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140 ailerons
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Re: 140 ailerons
Posted: Wed May 06, 2026 8:27 pm
They do have a subtle bend. See page 19 in the IPC.
Re: 140 ailerons
Posted: Mon May 11, 2026 6:44 am
They should be bent.
Re: 140 ailerons
Posted: Mon May 11, 2026 3:03 pm
How much bend should there be and should they both be the same?
Re: 140 ailerons
Posted: Mon May 11, 2026 3:53 pm
The bends are the same, my bends are closer to the belcrank. I'd wild-ass guess maybe a 5 degree bend?
If you study the thing, you can see that the rod is trying to run the bearing attached to the bellcrank in a horizontal plane and the bearing at the aileron connection in a vertical plane. There has to be a bend somewhere as one attach point is higher than the other.
Without the bend, the rod/bearing attached to the bellcrank end might be rubbing against the bellcrank halves when it is in motion, just my best guess...
Not the best pic but you can just make out the bend that is closer to the bellcrank.
If you study the thing, you can see that the rod is trying to run the bearing attached to the bellcrank in a horizontal plane and the bearing at the aileron connection in a vertical plane. There has to be a bend somewhere as one attach point is higher than the other.
Without the bend, the rod/bearing attached to the bellcrank end might be rubbing against the bellcrank halves when it is in motion, just my best guess...
Not the best pic but you can just make out the bend that is closer to the bellcrank.
- aileronbellcrank.jpg (93.75 KiB) Viewed 77 times
Re: 140 ailerons
Posted: Mon May 11, 2026 6:10 pm