To quote Steve:
it does not depend on the mass of the pendulum at all! just depends on the length L of the pendulum.
I foresee an excellent use for the heavier ceramic magnets !
To explain, usually nowadays, the 'dancing' toys feature 5mm x 3mm neodymiums. Previously they had larger, heavier ceramics of rough equivalence magnetically. The store manager said on Saturday "last year we had 10 boxes of these devils and they all went in a day"...and there it is. Looking underneath, we see 2013 stamped and so they'll be to the ceramic spec.
For the dolphin, the flyback goes through the circuit backwards, enabled by the diode inside the transistor (do correct me if wrong anyone). The very movement of forward and back creates that effect by default, with no extra components required. It's very similar to the EZ Spin and what we know of its ability to return energy.
A mod to the dolphin, would be pickup coils up and down the travel distance, at least either side in the middle, where speed is greatest !
To quote Brad:
I did run it on the 2200uf cap with a starting voltage of 9.4 volts-same as the battery. But it only ran for about 4 minutes.
Aha, good info and thanks for doing that. The first EZ Spin that I made did 1 1/2 minutes on a 1000uF charged to 1V. it's somewhat similar and i'm really wanting to try the 'dancing' coils idea for the extra resistance.
Yeah, Brad, do you recall the actual circuit connections ?
I'll wing it, as I think I know how it's wired, but would like your input
---------------------------------------
Here we have the MicroEZ.
It's as small as an 8 coiler can be, using these coils.
It was tried as a build, to see if there needed to be a clear 1 coil space between coils, to allow for the phantom pole.
As it happens, nope, runs ok lol
Not very quick again and i'm really wondering now whether that first 4 coil build is the way forward.
Many coils = sipping of voltage/current but slow speed. 1 or 2 coils = high speed, fast power usage....are 4 coils and 2 magnets the Goldilocks zone ?
[youtube]4dlKa0xOaSY[/youtube]
Edit: Fixed some spacings between coils.
There were panel gaps that British Leyland would have been proud of