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Old 01-08-2013, 06:14 AM   #6 (permalink)
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Join Date: Jan 2010

Djamgils and seefest you are both absolutely correct I'm not sure what the heck I was thinking last night.
Absolutely, the torque on the intermediate shaft is less and the rpm is about 3x more relative to the mainshaft. Power remains constant throughout the drivetrain. Basic mechanics, my apologies.

I still believe the issue is the shock load that the one way is able to handle with respect to it failing in crashes.
It's a 10mm ID bearing, whereas most helis with the oneway on the mainshaft use a larger one. Also, most other designs have the oneway riding on a sleeve on the mainshaft, making it an even larger ID.
The Logo XXtreme has a 14mm ID oneway riding directly on the mainshaft
The Trex 700 has a 15mm ID oneway on a sleeve over the mainshaft
7HV uses a sleeve over the mainshaft as well, I'm not sure of the diameter.

I know I've had a few failures on the tiny oneway on my mini Protos design that places the oneway right on the main motor shaft for super high rpm exposure. I wonder how that will work out in their new 700. I believe Miniature Aircraft did the same thing with the oneway up at the motor.
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