Let's Make Robots!

Question concerning Wheels

Are these geared motors holes


the same size as these



it may seem like an odd question, but I bought two of those right shaft geared motors and I have yet to find an axel that fits inside of it (no i didnt buy the wheels that came with it)


In other words would those sparkfun wheels be able to mount on the hobby engineering motors(same size?)

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Unfortunately, no. The GM3 and GM9 series motors use a solarbotics stype hub - the gears you showed from sparkfun have a Tamiya 3mm type hub.


You need some of these :-)