most of the time, lbs motor = lbs torque, HP has several factors (copper, what the motor RPM is wound for, brush size, cooling).....
For instant power, Series wound usually wins. Best power to weight is BLDC.
Don't look only at HP, look at size, you'll NEVER fit that AC50 in that bike, its an 8" motor, 12"+ long. Even if you could, you won't be able to fit high enough energy/power batteries in there to really have fun. The batteries will likely be the weakspot.
I'd suggest an AC15 or AC18 motor, and lifepo4 batteries.
Maybe start with a brushed motor like an Agni 95, its got a peak HP over 25hp, its light, high power to weight, easy to find a controller for, small.
For instant power, Series wound usually wins. Best power to weight is BLDC.
Don't look only at HP, look at size, you'll NEVER fit that AC50 in that bike, its an 8" motor, 12"+ long. Even if you could, you won't be able to fit high enough energy/power batteries in there to really have fun. The batteries will likely be the weakspot.
I'd suggest an AC15 or AC18 motor, and lifepo4 batteries.
Maybe start with a brushed motor like an Agni 95, its got a peak HP over 25hp, its light, high power to weight, easy to find a controller for, small.