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Unread 07-02-2009, 00:37
Rohan J Rohan J is offline
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FRC #1540 (Flaming Chickens)
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Re: Fisher Price Breaker Size

If you are using the 2009 KOP FP's that came attached to those big black transmissions, they have changed since last year. The new motors have a stall current of 109.410 amps. Yes, this is absurdly high for such a small motor, but that is just how amazing these things are. So, I'd say you should start with a 30, because based on your explanation of your application that seems like it will work. If you blow those, go to the 40. The motor will be just fine. The important thing is, as others have said, don't stall the FP... Even though they have a stall current near that of a CIM, if you do stall these, their internal cooling fans will not be spinning, causing the motor to overheat.

Last edited by Rohan J : 07-02-2009 at 00:41.