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Home✈️Aircraft🚁Helicoptere-Elec-Helicopters New or Limited ActivityNext-D › Stripped the front torque tube gears in flight? Fix.
12-23-2010 03:40 PM  9 years ago
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Richardmid1

rrProfessor

Leeds, England

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Stripped the front torque tube gears in flight? Fix.
I just stripped the front torque tube gears in flight and when replacing them I noticed that they dont line up with each other very well, I could move the front boom clamp back to tighten the mesh but then they still aren't engaging on the outer teeth which is where they are thickest.

I removed the transition gear support bracket and drilled out the 2 mounting holes to 2.7mm, this gives sufficient movement of the bracket on the screws to correctly line the gears up, just keep the bracket held downwards whilest tightening the screws. This ensures full engagement of the front bevel gears.
60% of the time, it works every time!
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12-23-2010 04:14 PM  9 years ago
MarshallB

rrVeteran

Middle Arkansas

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One thing to mention is if you are using the black gears, the pinion gear that goes into the TT is a tight fit. Make sure it goes all the way into the TT. Sometimes you have to push it in with some force. Otherwise it will change the mesh in flight.
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12-23-2010 07:43 PM  9 years ago
Richardmid1

rrProfessor

Leeds, England

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The problem I had was with the stock white gears, haven't tried the black gears yet, waiting for them to come in stock at my LHS.

Its the transition gear that sits too high up so the gear that goes into the TT only engages about 7/8ths of the transition gear.
60% of the time, it works every time!
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