FEMM simulation showing COP 3 and 7

[Omnibus]

Oh, sorry, I thought you had vids to upload but couldn't access youtube.

[phoneboy]

@broli, here's a short sketchy physics anim of the concept.

[broli]

@broli, here's a short sketchy physics anim of the concept.

phoneboy, you're missing the fundamental part of the concept, the power stroke, when the cores are opened and the magnets are in full repulsion or attraction. Your cores don't open. If possible try to redesign it by having the cores open at the right time, there's then also no need to spin the middle magnet, just leave it facing one polarity.

[broli]

phoneboy after some thought your design can be improved without adding additional motion. What you do is wrap a coil around the core and energise it at the right moment, this will behave like opening and closing the cores.  Inductive energy should be conserved. Only loss is joule heating while the current is maintained during the power stroke.

[neptune]

In designing a practical version of this machine , much attention needs to be paid to the side bars . They need to be as light as possible consistant with performance .These bars need to move fast , and so heavy weight will cause problems with inertia and momentum . Either by calculation or experiment , their dimensions need to be minimised . A composite material , probably ferrite like in nature might serve . Is ferrite lighter than iron ? this would have the added benefit of eliminating eddy currents .