Revell Big One Pro RC Helicopter - Top Blade Gear and Hub
thingiverse
The old gear was loose on the shaft due to many crashes and I wasn't able to fasten it anymore on the shaft. This replacement 94 teeth 1.6 pitch gear + hub fixed everything! Instructions Simply slide the hub into the gear, drop the bearing in the hub (a tight fit) slide the shaft and fasten to shaft of a Revell RC Coaxial Big One Pro RC Helicopter! Make sure your first run is smooth because the gear will need some breakin' in, but it flies superbly after this break in phase! Make sure to print without extra shells! These are very very tiny teeth and you want them to be filled with plastic (Skeinforge has some problem if you put extra shells!
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