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I have the following motor: GP307 Ultra Dash Motor by Tamiya.

I've read online that you can give this motor up to 16 volts. I have been putting in 11 volts and it spins very slowly, maybe about 200-300 rpm.

I don't know much about how motors work, so I ask you, what would make one of these little motors spin very slowly?

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  • \$\begingroup\$ The website you linked to says it can only handle 2.4-3.0 V \$\endgroup\$
    – Chris Laplante
    Commented Oct 24, 2012 at 20:55
  • \$\begingroup\$ ok, but would that cause it to spin slow and why? \$\endgroup\$
    – Steve
    Commented Oct 24, 2012 at 21:16
  • \$\begingroup\$ I don't know. Where did you find that it can handle 16 volts? \$\endgroup\$
    – Chris Laplante
    Commented Oct 24, 2012 at 21:18
  • \$\begingroup\$ some nerf gun modding sites. \$\endgroup\$
    – Steve
    Commented Oct 24, 2012 at 21:20
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    \$\begingroup\$ Did the motor spin faster the very first time you applied 11 volts but now spins much slower? \$\endgroup\$
    – Jason
    Commented Oct 25, 2012 at 1:32

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Looks like the motor is rated for 2.4V to 3V if you are applying 16V you could have cooked something inside since you are at least 5 times rated voltage.

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    \$\begingroup\$ Probably the motor had many independent coils and one (or some) of them was able to withstand the high voltage; these survivors are bravely trying to spin the motor. \$\endgroup\$
    – fceconel
    Commented Oct 25, 2012 at 15:02

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