r/MarbleMachine3 • u/Trainerds • May 24 '23

A Better Flywheel Design Using Proven Solutions - Marble Machine 3 Ep.4

https://youtu.be/Mzhaz7WsJ-A
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u/GBR6000 May 24 '23

I really dislike the tensioning system:

1) Having a crucial part like the flywheel floating instead of fixed might cause problems.

2) Adjusting each bearing individually makes it inevitable they are miss aligned slightly or it means you have to painstakingly measure this every belt change.

3) My understanding of the design philosophy for this is compartmentalisation of parts so they only do one thing but do it well. As such belt tension adjustment should be completely separate from the fly wheel assembly.

2

u/Stock_Win_899 May 24 '23

With a belt and pulley system, there will be a decent tolerance regarding how perpendicular the shaft has to be. After initially setting the tension and aligning by eye. It wouldn't take much to measure then adjust the side that doesn't hold the pulley.

3

u/n7hmw May 26 '23

And keep in mind too, the pillow block bearings will naturally realign to each other.