Fisher Price Gearbox

[ChrisH]

Originally Posted by nreynolds

My team is interested in using the Fisher Price Gearbox to raise our arm. The only problem is that we don't know of any way to connect the gearbox to a sprocket that will run the chain to the gear on the pivot point of the arm. Are sprockets that would work with #35 chains sold? Or is there some kind of work-around?

For this plan, would I have to find a way to make them myself?

Get some octogon stock that will fit tightly into the white output part on the FP tranny. Put a hose clamp around the outside of the white part. You now have something you can bolt into or put a shaft with keyway into. Your location is Los Angeles but I don't recognize the team number. If you can get to Hermosa Beach I can show you what we have done over the years.

BTW we stole the above idea from Kingman (team 60) years ago. The only time we had a problem was when a programmer (who shall remain nameless) left our arm against a hard stop when testing a new program version. Of course the motor went the "wrong" way and I wound up rebuilding an FP tranny. Fortunately we had several around.