Which motor for a BK3695

[RC-Monster Mike]

The 3695 could have a 42k rpm limit, or a 100k rpm limit, depending on the frequency of the controller(If you have a programming cable, you can find this out for yourself). I would absolutely agree with Serum, too. Keep the rpms around 35k to 40k and you will experience long term success in power, speed, runtime and system reliability. Gear the system to meet your speed needs withi these rpms and you will be happy in the end!