500cc 50hp electric motor swap

AI Thread Summary
A user is considering swapping the engine of a 1993 ex500 due to existing engine problems, aiming for a motor with equal or greater power, specifically around 50 HP and 31 ft-lbs of torque. The discussion highlights the importance of range, noting that a 50 HP electric motor could rapidly deplete a large battery, which is a concern unless the bike is intended for short drag racing. Alternatives like a 15 to 20 kW motor are suggested for achieving a top speed of 90 mph while targeting a range of 100 miles. Users are encouraged to explore existing electric motorcycle models and their specifications for potential compatibility. The conversation emphasizes the need to research motor and battery options to meet performance goals.
ckcurtis
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Hi, I own a 1993 ex500 with that is having engine problems, I would like to swap the motor for one that is has more or equal power. The best specs I can come up with are these the motor puts on the rear wheel, HP 50, Torque 31 ft-lbs, top speed 130mph, I am looking into getting a DC-liquid cooled motor.
 
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:welcome:

What is your requirement for range? 50 HP will drain an extra large car battery in just about one minute. But if your goal is to drag race for 1/4 mile, that's no problem.

What other electric motorcycles have you seen? How many HP? How big are the batteries?
 
Here is a good summary of current electric performance motorcycles:

http://www.thechicecologist.com/2015/05/top-electric-motorcycles/
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I am looking it
anorlunda said:
:welcome:

What is your requirement for range? 50 HP will drain an extra large car battery in just about one minute. But if your goal is to drag race for 1/4 mile, that's no problem.

What other electric motorcycles have you seen? How many HP? How big are the batteries?
Well maybe I could get away with a 15 or 20kw motor I'd be happy if it went 90 tops. I plan for a 100 mile range. Something like this http://www.thunderstruck-ev.com/motenergy-1302-water-cooled-brushless.html
 
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