How can this motor have such a broad voltage spread?

[pengyou]

http://www.transmag.com/3-in-brushless-motor.htm

It states that it can provide from 0.2 hp to 1.0 hp (that part I can easily see) but it also says it can handle from 24 volts to 240 volts. Is this realistic? The size and weight is perfect for what I want to do. I am going to pick up a folding bicycle soon. I am hoping to find a motor that will use 36 volts - Dewalt set - at about 400-500 watts. If you stay in the low to middle range of operations is this likely to be a durable motor?

[sherpa93]

I not familiar with this motor. As a general rule Brushless motors are not voltage sensitive. The windings (turns) determine the rpm per volt (rpm/v). More volts = more rpm. Wire diameter determine the current (amps) it will take before it disintegrates :eek: What you need to look for is stated rpm/v of the motor. Use the rpm/v to determine the speed at a given voltage 24/36/48. Does the speed agree with your gearing, voltage? Larger diameter motors usually mean more torque...

[StephenH]

You really need to know the performance at that voltage. Just saying it can be used at 36v doesn't mean it will produce anywhere near rated power at 36v.

[bikingbrit]

http://www.transmag.com/3-in-brushless-motor.htm

It states that it can provide from 0.2 hp to 1.0 hp (that part I can easily see) but it also says it can handle from 24 volts to 240 volts. Is this realistic? The size and weight is perfect for what I want to do. I am going to pick up a folding bicycle soon. I am hoping to find a motor that will use 36 volts - Dewalt set - at about 400-500 watts. If you stay in the low to middle range of operations is this likely to be a durable motor?

I think they are stating the voltage, rpm, and power ranges available in that case size motor. The 24 volt version undoubtedly has fewer/thicker turns of wire than the 240 volt.