How to make a magnet (ball or disc) rolling a long distance, simple device.

[bikelight]

Hi
Thanks for all replies and thinks.   (Below thinks are not tested).

1.  coil C is made of copper wire and plastic supporter, no any iron metal in it.  A coil if powered by a battery is will act as a magnet, one end of coil  is S or N, which will attract the magnet ball B into B1 position.  When power of coil C is cut off, the coil c is just a copper coil, will not attract magnet ball and release the magnet ball into groove H.   I am not sure this is right or not.  The coil C should use very litter energy to attract magnet ball B because B has own magnetic force.
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2.  Coil Q and Q1 is for charge battery,  Q and Q1 should not powered by the battery because there is a diode stop power supply from the battery, only when magnet ball B is passing the coil Q and Q1, the battery will be charged.  because the coil Q and Q1 is not powered by the battery, the is no Lenz force to stop or slow down magnet ball B to pass. 

Regards

[bikelight]

Tested: Placed this system inside coils,  test shows it did generate electricity when the magnet ball passes coils on triangle sheet.  See picture of coils (4 coils, each 2500 turns, 0.14mm copper wire). 15mm magent ball.   The ball is smaller than I used because the diameter tube inside the coils.  So the magnet ball is not travel very far on triangle sheet.

youtube film for Q coil generator is
https://www.youtube.com/watch?v=ME1e-5XSGCk&feature=youtu.be


film for Q2 coil generator is
https://youtu.be/nWGPh0Vf1jQ

The tests is basic but it confirmed the system can generate and did not see Lenz force stop the ball.  This is a part test for continuously run this system.  The generators can recharge a battery which power  a coil C to attract the magnet ball into a last position and then release it for next run.

Next question is these generator can generate enough power to cover energy is used in coil C and switch K in one run.