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Unread 14-01-2009, 19:53
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Re: RPM of Fisher Price gearbox

Quote:
Originally Posted by Tristan Lall View Post
Remember that this year's F-P comes with a 16-tooth pinion, not 19. So the data given above regarding the gearbox ratio might not be appropriate, since it's probably based on the 19-tooth version that we've been receiving for several years.

You might want to have a look inside (and let us know what you discover).
On Monday we pulled apart one of this years FP gearboxes to see if the gear sizes were different than before. I didn't check all of the gears (only the useful ones), but the first two stages were exactly the same as the ones in the 19 tooth gearbox. I think the internals of the new gearbox are all exactly the same except for the motor pinion, but someone should check to make sure.