Quote:
Originally Posted by Aragon
Something else to consider is gearing limitations. A motor spinning at 60k and geared for 40 MPH will deliver more torque to the wheels than the same motor spinning at 30k and geared for the same 40 MPH.
A 2 pole motor spinning at 30k RPM and geared for X top speed should deliver less torque to your wheels than a 6 pole motor of similar size/weight spinning at the same speed and geared for the same top speed.
Many people here target 30-40k RPM motor speeds because of gearing and top speed practicalities. But it's usually easier to gear high than to gear low, so a low Kv, high pole count motor is preferred IMHO. A high pole count motor naturally spins slower which allows you to get more torque to your wheels because you don't have to gear so low to get the mechanical torque advantage. A 6 pole or more motor should work great. I'm going to be using a Neu 1900 which is 8 poles.
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I generally agree with you... but what you said about gearing lower for 2 pole motors to get the torque advantage. Not true, when you have 3 times the torque you 'need' from these motors as it is.
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