I need some advice. I have a Giant Anthem 2012 dual suspension bike. And want to put a 1500 watt 26" MTX cassette type rear hub motor onto it. I believe the MTX wheel can take up to a 9-speed cassette. Not sure if it can take anymore; if anyone does, can you please let me know as I have a 10-speed cassette and want to transfer this onto the MTX hub motor wheel? If it can't take my 10-speed cassette, What would happen if it couldn't take 10 speed cogs and I had to take one of the cogs away to make it a 9-speed cog? Would this create any complications with my gears? And if I took, let's say, the last big cog away from the 10-speed cog to make it a 9, would that just mean I couldn't use the last gear? Sorry for so many questions. I am new to all this and don't know a lot about bikes. That is why I joined up here—to learn from people who are in the know. Thanks
Cassette, derailleur, shifter lever, chain wheel and even chain must all be compatible to work together. There are some other compatible combinations than just all the number of gears but at least read this question.
Assuming you do not change the gear ratio of the previous 9 gears, it should be no difference for the hub and its controller. I am less sure if it will work well with the 10th gear or if the gear ratios are different but for some simpler programmed controller it may. Or put two identical sprockets.