How To Rig A Crank-Connecting Rod System

0 votes
Date Updated: 
09/19/2011
Author: 
Henrique Lundeqvist

A = Angle Of Rotation
B = Rod Size
R = Crank Radius

CHANGE THE VALUES BETWEEN "..."

A = "X"_Rotation*180/pi
B = "30"
R = "10"
(B+R)-sqrt(B*B-R*R*sin(A)*sin(A))-R*cos(A)

Application Version: 
3D Max 8 and probably the other latest versions
Video URL: 

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YoyoGraphics's picture

Never mind. I just realized

Never mind. I just realized that I can do it with limb-solver.

- Geoff

YoyoGraphics's picture

A more complicated problem.

Hi, Henrique. This is a great tutrial. I really wish I had seen it a few years ago. It would have helped on a couple projects I've had over the years.

Anyhow, I have a similar but slightly more complex problem that I am seeking help on. See this video here. The only objects that have keyframes are the wheel and the front stirrup supports, the rest follow via look-at controllers. But I would love to simplify it, and wire the front stirrup supports to automatically rotate the proper amount with the wheel. Can you help?

Thank you.

- Geoff

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