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Re: Do FisherPrice Gearbox Documents Exist?
A little counting and some math.
The FP Motor has a 19T Pinion on it. The FP Gearbox internally is made up of multiple compound gears.
Pinion Gear 19T
Compound Gear 1 (72T Large / 25T Small)
Compound Gear 2 (79T Large / 14T Small)
Compound Gear 3 (45T Large / 12T Small)
Final Gear (38T Large) Connected as a Compound Gear to the Spindle
19T/72T x 20770 = 6008.75RPM
25T/79T x 6008.75 = 1901.50RPM
14T/45T X 1901.50RPM = 591.58RPM
12T/38T X 591.58 = 186.82RPM AT THE DRIVEN SPINDLE.
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That's for us to know, and you to lose sleep over finding out! - Austin [more] 
15-01-2011, 13:33
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