Quote:
Originally Posted by octothorpe
Seconded – you may want to try a greater reduction with the fisher price. What gearbox are you using? Our elevator uses 2 FPs with approximately 46:1 reduction all told.
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We made our own gear box, with about 1:2ish spur gear reduction followed by 1:30ish worm gear (so it wouldnt backdrive). I dont know the specifics, i didnt design it, but it only used one FP. It was about twice as fast as the van door and could lift about 6 lbs tied to the elevator. the spring steel band contraption weighs about 15. Considering the weight of the lift alone and the differences in speed i think the FP is still better, just the gearing down couldnt handle the load. If we had planned better we probably could have gotten more speed than the van door and still lifted everything we needed. shoot, we could even maybe gear the van door up some if we were feeling risky, but i dont think it will be worth the time, considering all we still have to thursday morning.
Also, i hadn't even though of the film advance in cameras when i was designing it, at least not conciously. Now that i think about it its almost an exact copy. IT IS RELIEVING WHEN THINGS ACTUALLY WORK.