[Chipawa]

We've used the banebot gearbox on FP motors in the past. If you don't need to keep the Fisher Price pinion gear, you can cut it off instead of trying to pull it off. We used a dremel with a cutting wheel. If you take this approach, be sure to cover up the motor (we used masking tape) to keep shavings out of the motor housing.

The replacement pinion that fits the P60 fits VERY snuggly on the FP motor shaft. We had success turning down the motor shaft ever so slightly. The exact dimensions excape me. We powered the motor and used emory cloth to bring down the motor diameter.

Lastly, I seem to remember the FP shaft being too long, so we had to cut the shaft length down. If you have any Banebot motors from past year's kit of parts, you can compare the shaft lengths to get an idea of how much to cut off the FP motor shaft.

Best of luck.