500cc 50hp electric motor swap

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Discussion Overview

The discussion revolves around the potential swap of a motorcycle engine for an electric motor, specifically targeting a motor with equal or greater power than the existing 50hp engine. Participants explore specifications, performance requirements, and battery considerations for electric motorcycles.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses interest in replacing a 1993 ex500 engine with a DC-liquid cooled electric motor that matches or exceeds the current power output of 50hp.
  • Another participant raises concerns about the power consumption of a 50hp electric motor, suggesting it could drain a large battery quickly, but acknowledges that this may not be an issue for short drag racing distances.
  • There is a suggestion to consider electric motorcycles currently available, with inquiries about their horsepower and battery sizes.
  • A participant proposes that a 15 or 20kw motor might suffice if the top speed requirement is reduced to 90mph, while aiming for a 100-mile range.
  • Links to external resources are provided, summarizing electric performance motorcycles and specific models that meet the discussed specifications.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the optimal specifications for the electric motor or the necessary battery capacity. Multiple viewpoints regarding power requirements and performance expectations remain present.

Contextual Notes

Participants have not clarified specific assumptions regarding battery technology, weight considerations, or the impact of different motor types on overall performance.

Who May Find This Useful

Motorcycle enthusiasts considering electric conversions, engineers exploring electric motor specifications, and individuals interested in electric vehicle performance metrics.

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/
mission-r-300x227.png
 
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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