Rigging engine Shaft

[Anonymous]

Maya 2022.1/2020 , I'm rigging v4 engine and Piston shaft rig , I've used aim and point constraint

but they are not working properly, problem is Shaft is sliding, See the Video file.

if I drive the main shaft in a single frame by hand rotating on Z it works properly. but in animation it slides.

or please Help me how to rig right way I've tried joint and IK handle but Still piston Shaft Slides.

File:https://drive.google.com/file/d/1THhYFNM-Oc_qNyV2t3KZwSAz0fdr6t4w/view?usp=sharing

[hamsterHamster · Accepted solution]

That is not so trivial to rig this with precision. Your rig doesn't work, because there is a cyclic dependency between those two locators: A follows B position while determining the angle of B's parent, which in turn influences B's position.

Anyways, here's RiggingDojo's tut https://youtu.be/goKGOwgh52I

Or if you wan't more techy approach, then go for TechArtAndStuff's tut http://techartandstuff.blogspot.com/2011/11/cranks-and-pistons-in-maya.html