Hello I was wondering if anyone could tell me how to estimate the max (straightaway) speed of an EV based on things like rpm of motor, gear ratio, tire diameter, weight of vehicle+operator. Say I'm looking at this motor, which is rated at 2600 rpm. So obviously it only spins at 2600 rpm when it's under no load, right? If I could just figure out how fast it would spin under like 200 lbs then I could do a simple gear ratio conversion to get the rpm of the rear wheel and then use the circumference to get a speed. But I feel like torque has to be involved. Do you have to consider the distance between the motor and the rearwheel sprocket or something? And I'm sure wind resistance makes a whole mess of everything too. I'm thinking of converting a crappy Schwinn mountain bike into an EV: replace pedals with motor, swap out rearwheel sprocket with a custom 25 chain one, use some u-bolts and wood to make a battery rack. I like physics and math so please explain things and be detailed.