[6600gt]

Is that with a double wheel design or single?
The two wheels in a double wheel design would cancel each other out, according to KenWittlief, and I understand it now too.

It really dosen't take that much energy to launch the poof balls at 12m/s, even the kit of part wheels can do it.

So according to everyone else that posted here:
It doesn't matter how high or low you mount the wheel for the gyro effect
2 wheels create no gyro effect(opposite spinning)
2 horzontal wheels should cancel out all the effect, right?
Bikes are pretty stable.

Did I miss anything?

So the only problem of having a cannon with a spinning wheel high up is the center of gravity?

Thanks a lot everyone.