# Pedaling a bike anim

**URL:** <https://forum.kirupa.com/t/pedaling-a-bike-anim/225794>\
**Category:** Uncategorized\
**Created:** [May 15, 2007, 6:32pm UTC](https://forum.kirupa.com/t/pedaling-a-bike-anim/225794 "2007-05-15T18:32:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![oldgreymare](https://avatars.discourse-cdn.com/v4/letter/o/838e76/32.png) [@oldgreymare](https://forum.kirupa.com/u/oldgreymare)\
**Post date:** [May 15, 2007, 6:32pm UTC](https://forum.kirupa.com/t/pedaling-a-bike-anim/225794/1 "2007-05-15T18:32:06Z")

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Hi there everbody

Does anyone know where I can find a tutorial on …I’m not sure what this would be called…articulated motion? relative motion? I am making an animation of a guy riding a bike. The user inputs the gear to change his pedaling speed.

I can make the wheels change speed and the gears change speed and size.

I don’t know how to fix his foot to the rotating pedal circle, with a fixed hip point and the knee moving appropriately inbetween.

If anyone can point me in the right direction that would be fabulous!

Thnx!!!