Point well taken, CMO, but in this case, I was mostly trying to ascertain what assembly this gear is considered to be part of...

I recall reading that grampi replaced his engine (it seems like his keen eye for pricing caught most by surprise, as memory serves), and based on what he explained above, it almost sounds as if he upgraded the source of torque and not what the torque was being applied to with results that were less than desirable (if not expected). Yes? No?

Things that seem to be common problems or extreme problems are catching my eye... like the broken shock towers on the HPIs that I keep reading about. And this problem definitely qualifies as extreme, but I suspect that once the drivetrain is brought up to 'spec' to handle the new stresses being placed on it, grampi will be having a great time (followed by posts about not being able to keep the front wheels down, etc., hehe)

See, cars are so much harder than planes!! In a plane I transfer my torque to a prop, the end.

pb