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How do i buld a multi speed k'nex gearbox? Can any one give me a page with instructions? Answered

I am trying to buld a muulti speed k'nex gearbox with a shifter can someone help?

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check out mine; it would be hard to have many gears as there are only 3 good gears; it would have to have many rod levels, but check out mine none the less

it's quite easy to invent at you'r own. To gain speed use bigger gears that grab into the smaller gears.

I know that i made a box with a ratio of 72 to 1.
The trobble is a shifter to canges to at least 4 gears.