Peter Lindemann, The Mechanical Engine: A Re-Evolution of Bessler's Wheel

[RebeLLz]

position 1and 2

free fall   -->  negative torque

[mondrasek]

I've attached a WM2D file made by importing a DXF of all the elements needed (I think) to simulate Lindemann's concept.  It tried to stay as true to his drawings as possible by scaling the drawing on page 5 of his document and drawing in AutoCAD.  This was then polar arrayed 8 times to complete the entire assembly with identical pieces at precise locations.  I took some liberty with the design of the cam profile and engineered the ratchet to my liking.  The entire drawing was scaled so that the wheel would be 10 ft. in diameter, since this was one of the sizes supposedly demoed by Bessler.

Please let me know if anyone would like the models modified in anyway.  I have only played with WM2D a very short amount of time and do not know if these models are the easiest or even are complete enough to simulate the concept.

Thanks,

M.

Whoops.  Just noticed the ratchet DXF did not translate properly into WM2D.  I modified and have attached the updated file.

[mondrasek]

Well here is what I was able to simulate.  I had to remove the spring mechanisms that bounce the pendulums back from the outer rim of the wheel.  Too many objects for WM2D I think.  I replaced them with just the plunger part of the spring mechanism with an elasticity of 1.0, so an idealized spring, basically.  Not as neat to watch, but effective enough I think.  I also added a falling mass to start the wheel spinning.  It functions as Lindemann described as it is started at an appropriate RPM (and yes the pendulums swing, bounce, and catch back on the ratchet), but quickly slows once the initial swinging pendulums reach the point on the other side where they want to reset inwards.  Then she stops rather quickly.

I've idealized many masses and frictions towards zero but don't think there is much more to try.  Let me know if anyone has ideas to try.

Thanks,

M.

[brian334]

This is daum.

[mondrasek]

Daum
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