[Gamer930]

Be careful with the 56mm 12:1 gearboxes also. . . [edit]These are the ones made to run with the CIMs[/edit]

On one gearbox the CIM Motor Shaft was bottom out in the gear box and we had to fabricate a .015 shim because it was running very rough and grinding. . . Seems decent now. . .

Now Thursday night we had problems with our other gearbox. . . We were running it and all the sudden it locked up. . . We took it all apart and there were bits of metal shavings mixed with the grease. . On the output shaft there is a gear that is loosely press fit and we found that when they fabricated the gear there must have been a small burr on the gear and when they press it onto the shaft it made a good indentation and created a circular groove on the shaft that it finally froze up. We washed up all the gears. Took some fine paper to the gear and shaft and regreased it. . . Seems to run fine now. . .

Just a word of caution. . . Highly recommend to take them apart immediately if you hear something not right and after you use it for a while.