Quick Return Mechanism, Version 3

[@jameskirk3210]

Gorgeous 3 d modelling : awesome🖖👌👍

[@ScubaDude1960]

Thankyou... thankyouverymuch...

[@CableWrestler]

Ohhhh
Unless it's an air pump, in which case this is perfect lol

[@CableWrestler]

You misunderstand the workings of an engine.
The cam and valves should be running at half the speed of the crank.
There should also be a compression and power stroke.
Half the valvegear speed.
Half the duration of the lobes.

[@ScubaDude1960]

It's not an engine.