Power Transfer

How to transfer rotational power from shaft to shaft

Overview

On this page we will go over the pros and cons of a few types of transfer,

Look at Idlers,

and talk about Gear Ratios.

A Warning for handlers

Types of transfer

Gears

Note that gears change the direction of motion

https://grabcad.com/library/15-tooth-18-tooth-gears-meshing

Chains

https://in.pinterest.com/pin/651473902321724083/

Timing Belts

https://grabcad.com/library/timing-gear-set-1

Round Belts

https://www.gobilda.com/3405-series-round-belt-5mm-cord-diameter-95mm-circumference/

Idlers

Idlers are used to shift chains and belts.They are often used to tension the system (take up slack) or guide it (get around obstacles).

They can be used both inside or outside the chain/belt.

Best when freely rotating (has a bearing) and using the appropriate sprocket/pulley.

https://www.quora.com/What-is-idler-pulley-and-how-it-is-linked-with-belt-drive
https://www.gobilda.com/3414-series-5mm-htd-pitch-set-screw-pinion-timing-belt-pulley-8mm-rex-bore-24-tooth/

Gear Ratios

Also applies to gears, sprockets, and pulleys.

Driver gear rotations : Driven gear rotations

As a rule of thumb, less speed equals more torque (power)

The opposite is also true; more speed equals less torque, which means it gets easier to jam/skip/slip.

Here are a few examples

15-tooth driver gear and 45-tooth driven gear.

It will take 3 rotations of the driver gear to equal 1 rotation of the driven gear, therefore, the gear ratio is 3:1

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