Power Transmission, Gear, Pulley

by redsox1701
Tags: gear, gear design, power, power transmission, pulley
redsox1701 is offline
Nov7-12, 05:05 PM
P: 1
I need to lift 75 pounds when only using 4 pounds of force. Is there a gear set or pulley system that can do that?

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Averagesupernova is offline
Nov7-12, 06:51 PM
P: 2,451
Research the block and tackle.
Pkruse is offline
Nov8-12, 10:43 AM
P: 490
Lots of ways to do that. The question is which means works best for this application. But then you have not told us anything about this application except the input and the output.

The idea to look into block and tackle design is a good one, and the most obvious. But by the time you figure in friction you are probably looking at 20 parts of line or more. That many parts creates other problems that might drive you to a different lifting method. This is the point where more details would be useful.

crazyswede is offline
Feb18-13, 02:37 PM
P: 4

Power Transmission, Gear, Pulley

electric winch with a 3lb button
anorlunda is offline
Mar5-13, 06:56 PM
P: 120
Simplest of all, a lever.
Mech_Engineer is offline
Mar9-13, 04:10 PM
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inspiredape is offline
Apr9-13, 10:39 AM
P: 4
Hi I am building an electric bicycle and I want to use a high rpm(6-8000 rpm) brushless motor. the gear reducers I've found have not been able to hande more than about 4000rpm. I was wondering if anyone has heard of using a tesla turbine as a sort of reduction/torque convertor. My idea is to make something that looks like a clutch with input and output disks stacked and sandwiched with low tolerance in some sort of viscous oil and use the surface cohesion to transfer torque. In my mind the molecules of oil would roll against eachother and create a kind of planetary like reduction. Is that completely ridiculous?

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