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  1. 01-02-2012 #3
    Tenson's Avatar
    Lives in London, United Kingdom.
    Tenson
    Last Activity: 29-06-2021 Has been a member for 9-10 years. Has a total post count of 555. Received thanks 29 times, giving thanks to others 9 times.
    Anyway to follow up, the motor shows 5 Ohms across its terminals so taking the 300watt rating on the eBay site (I know!) that needs about 40V and 8 amps.

    EDIT: That's all wrong! It seems the resistance when the motor is idle is different than when spinning. It actually seems to be about 180 Ohms when working. I found 37V made it draw 0.2A so that is 180Ohms. If the motor really takes 200-300watts then I need about 200V of drive.
    Last edited by Tenson; 02-02-2012 at 05:40 PM.
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