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140 flap torque tube wall thickness
Posted: Sun Mar 29, 2026 5:10 pm
by 6597
Does anyone know offhand the wall thickness of the carry-thru flap torque tube on an 140? I can't tell if it's .035 or larger. I don't have one laying around to measure and measuring one in place is less than ideal!
I made one for my bird 25 years ago with 4130 and can't remember, making one for a potential new member.
Re: 140 flap torque tube wall thickness
Posted: Mon Mar 30, 2026 9:04 pm
by 6597
tried to measure mine today. It's tough to get an exact measurement without taking one of the flaps off, but I am confident it is between .060 and .070, which implies it's .065 wall tubing.
Found an old post from John C, I think I got it now, thx!
Re: 140 flap torque tube wall thickness
Posted: Tue Mar 31, 2026 12:07 pm
by tyzawe
3/4" 0.065 4130
Re: 140 flap torque tube wall thickness
Posted: Tue Mar 31, 2026 12:40 pm
by 6643
6597 wrote: ↑Mon Mar 30, 2026 9:04 pm
Found an old post from John C, I think I got it now, thx!
Wow! I knew the answer and didn't even know it!