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Originally Posted by sanddrag
Today we had a little problem with our Fisher Price motor. It is a bit of a long story how it happened but we have lost of the little beige colored fan blades inside the motor. They are very fragile and all but one snapped off. The rest of the motor is okay. Will we be okay to still run it or will it fry itself. It is not being used alone in the gearbox. Also, we plan to have an external heat sink and small fan right on it. Do you think it will be okay. (also, if we need to get a spare, has anyone found them yet?)
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Sanddrag,
Let me guess...You were running the motor and at some point you looked and saw that there were pieces of plastic under the motor. If this is what occurred, the fan died when the motor over temped. The plastic fan becomes detached and starts to get chewed up by the armature when the motor is above a certain temperature for too long. (this is dependent on the motor orientation) If you smell the motor, you will know instantly that it is no good. BTW, this fan is not very efficient at low speeds and it does basically nothing when the motor is run for any length of time near stall.