100:1? Are you using the 24V motors or the 3V ones? What size wheels are you using? If you're using the same motors as me but the 100:1 gearboxes, even with 100mm wheels you're still going to be 1/3 the speed of mine.

The botpack was just for testing. Now I've got my 11.volt lipos and a charger I'll be using those.