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whstlngdeath · 01-12-2007, 11:57 PM

The autorotation hub on my heli broke today. The motor will spin the main gear but not the bottom one. Has anyone had this go out on them? I've ordered replacements from Tower, but not sure if they will last.

Jesse

matt400 · 01-16-2008, 03:50 PM

Mine just went out today. Just finished rebuilding after a wreck and the center of the main gear looks like it melted or something. I'm wondering if I assembled it wrong. For some reason, I could not fit the small silver ring/washer between the top of the main gear and the lower bearing that the main shaft goes through.

Could I have put the gear set together wrong?...Before installing, put the gears on the main shaft, put in the bolt through the smaller gear and mainshaft on the bottom, then made sure that the lower gear only turned when spinning the main gear clockwise like the blades would rotate.

LTCOBRA1 · 03-07-2008, 10:25 AM

Your steps are correct but you have to place the washer on the main shaft above the main gear.

01-12-2007, 11:57 PM	#1 (permalink)
whstlngdeath Registered Users Join Date: Dec 2006	One-way hub shot, MX400 Pro The autorotation hub on my heli broke today. The motor will spin the main gear but not the bottom one. Has anyone had this go out on them? I've ordered replacements from Tower, but not sure if they will last. Jesse __________________ "When all else fails, use a bigger hammer!"

03-07-2008, 10:25 AM	#3 (permalink)
LTCOBRA1 Registered Users My HF Map location Join Date: Apr 2007	Your steps are correct but you have to place the washer on the main shaft above the main gear. __________________ GO GATORS!! TREX 600CF MX400 Pro E-Flite CP

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01-16-2008, 03:50 PM	#2 (permalink)
matt400 Join Date: Jan 2008	Mine just went out today. Just finished rebuilding after a wreck and the center of the main gear looks like it melted or something. I'm wondering if I assembled it wrong. For some reason, I could not fit the small silver ring/washer between the top of the main gear and the lower bearing that the main shaft goes through. Could I have put the gear set together wrong?...Before installing, put the gears on the main shaft, put in the bolt through the smaller gear and mainshaft on the bottom, then made sure that the lower gear only turned when spinning the main gear clockwise like the blades would rotate.

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