Align Main Drive Gear (2) (78T)

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Align Main Drive Gear (2) (78T)
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This is a pack of two replacement Align 78 Tooth Main Drive Gear, intended for use with the Align 100S, 100X and 150 helicopters. This updated design features solid structure to help increase gear torsion strength and avoid deformations under high speed rotation. 

This product was added to our catalog on January 21, 2015

Gregory Redlin
Verified Owner
Tuesday, Jun 15 2021 (about 3 years ago)
Align Main Drive Gear (2) (78T)
Extremely delicate. The teeth don't strip but the keyed center hole strips. The plastic key shears off with only a minor blade strike. Brush the grass a little and your main gear is gone. Goes crooked on the shaft and spins on the main shaft. No longer solid. You will notice the motor surge when the key is stripped out and the gear will wobble. Needs to be a whole lot beefier in my opinion. Just ordered eight of them. Easy to change but a pain in the butt for every minor blade strike. Would be better if the key was longer or made part of the metal insert instead of the plastic part.