Tuesday, August 9, 2016

Re: [Electric Boats] Need help with choosing the right motor!

 

Bendik,

Yes to maps v curves but for me what matters is the steady state cruise combination of volts and amps which gives a particular efficiency at a particular speed. So say you took the map of this YASA which is for combined motor and controller at 700V. All it really tells me is what happens under the stated conditions.

http://www.yasamotors.com/wp-content/uploads/2015/09/YASA-400-Product-Sheet.pdf

In principal it's all down to the prop and keeping volts up, amps and temperature down and shaft speed down.
John R

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