Wednesday, December 4, 2013

What is the cheapest electric motor I could use for an electric boat?

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Tahini Cla


I want to equip some small boat with an electric motor, which I want to run on a car battery or several.

I really wonder what I could use as a motor. Maybe truck starters? How long would the boat run on that though? I'd need something that can run four or five hours.



Answer
First of all, I don't know anything about electric motors for boats, but I have seen a lot of motorcycle conversions. The motors used for these bikes usually seem to be used for golf-karts so that they are specifically designed for DC power sources.
Here's an interesting site with conversion kits for all kinds of vehicles including boats:
http://www.electricmotorsport.com/store/ems_ev_parts.php
A conversion of a stock 50ccm motorcycle:
http://www.maxdon.com/gpr.html
Conversion of a used old Kawasaki at home:
http://www.youtube.com/watch?v=Rzi4tL3QMWk

From what I can see the main problem in all these conversions is still the battery-space and capacity, and of cause, the price.
A boat might provide enough space for the batteries but I couldn't find reliable info on the range an electric powered boat might have.
Unfortunately, I lost all my bookmarks related to electric engines. These few links here are all I can remember, sorry.

What is riding one of the electric power assist bicycles like?

Q. The only thing I've heard is that they even out hills a little. What else have you heard? Are they worth the high price?


Answer
You can buy a nice shop quality bike for the same price as a cheap electric bike. You will benefit from the exercise and be a lot healthier. Don't expect the batteries to last long on the cheap bikes so you end up with a 70 lb bicycle or ending up pedaling harder then a regular bike. Expect to buy a new battery pack every 6 months or so.




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Title Post: What is the cheapest electric motor I could use for an electric boat?
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