I love my yose power conversion , I have the 250w rear motor great pulling power rides really well, but as I have some private land to ride on I was wondering if I could fit a 350w wheel and would it marry up to the controller etc, and is it possible to buy just the rear wheel any one?
The 350w one spins faster than the 250w one, which is the last thing you want for towing a trailer or riding off-road. The 350w one would be good for commuting and longer bike rides if the higher speed was allowed, but it isn't in this country, nor most of Europe.
Power = torque x speed
Let's say you get T amount of torque at 15 mph from the 250w motor, so your power is T x 15 =15T watts
The 350w motor gives less torque, but more speed. Let's say torque is now 90% of T, but speed is 20 mph maximum. The power will be 0.9 x 15 = 13.5T at 15 mph and 0.9T x 20 = 18T at 20 mph, so at 20mph with the 350w motor, you get about 33% more power, but at 15 mph, you get 10% less power.
What you feel as power is actually torque, which is the force that accelerates you and lifts you up a hill, so torque is much more desirable than power unless you need to go fast all the time, like on a long commute.
