Fisher Price motor
From FIRSTwiki
| Fisher Price | |
|---|---|
| |
| Stall current (amps) | 64 |
| Stall torque (in-lb) | 5.72 |
| Max power output (watts) | 390 |
| Free speed (rpm) | 16000 |
Two Fisher Price (FP) motors and gearboxes are included with every kit of parts. The FP is the most powerful motor in the kit of parts. The FP is taken from a Powerwheels (tm) car where it powers one of the wheels.
Contents |
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Included gearbox
The included gearbox is the same one that is used in the Powerwheels (tm) car. It has a ratio of approximately 188:1. The gearbox uses plastic gears, but it is relatively reliable and not known to strip gears. It has a non-standard output shaft consisting of a open-ended cylinder with 10 slots cut into it. It mates with a spool-shaped piece with spokes matching the slots.
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Torque and Efficiency curves
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Without gearbox
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With gearbox
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Usage Notes
- The FP has by far the highest power density of any of the KoP motors. The 2005 KoP included a Fisher Price motor designed to operate at 9 volts, instead of 12. Consequently, it is very easy to burn out because it creates such large amounts of heat in such small volume/mass. See magic smoke. Be sure to design your mechanism so that the motor never approaches stall. A good rule of thumb is to design for 1/4 the stall torque.
| 2008 KIP Motors: Chiaphua/CIM | Denso Window | Taigene Window | Keyang | Fisher Price | Globe | Banebots (RS-540, RS-550) |
| Older KIP Motors: Window | Seat | Van door | Drill | Fisher Price | Globe |
