how to determine size of coil?

[Darc]

Hi all, new member long time reader.... but still some insight missing

I have just come upon 10 cylinder 25.4mm dia x 25.4mm Height N52 NEO magnets. And need another winter project

I have 10lb of 20AWG and 1lb or 24AWG enameled magnet wire, and 30 or so MJL21194 NPN's
I have built the r-charge monopole kit, and have read the beginner SG and intermediate SG guide to Bedini.
Its time to make my own charger with the bits I have acquired

However I am concerned my magnets may be too powerful (Being NEO's) and I should be constructing my coils with an air core.
I want to construct something to hope fully charge 120AH deep cycle batteries.

I would like to mount magnet horizontal in the wheel and make two bedini type circuits, one push and one pull config. to take advantage of both poles

here lies the questions...
1, how big a diameter wheel, to house 10 magnets,
2, how big should my spool be, air core or ferrite how large dia for core
3, how many strands of wire on the coil
4, can the wheel be made from Perspex instead or alloy.
5, Can I use 20MM DIA acetate rod as an shaft.
6, do the bearings have to be specialist non magnetic

Any info would be much appreciated,
Happy dayz
Darc

[Darc]

well sometimes you just got jump in and try... see imag0295a

Got this working away... image IMAGO346a1 shows the trigger coil on right with tape, I wound separately from the charging coil middle and coil 3 far left is not connected (have been playing with wire lengths on the spool)

I have tried air core with the neo mag's but not much voltage induced.. so have wacked in core recommended in beginners guide and moved the coil further from neo magnets than shown in imag0344a.

when we find an optimum coil size we plan to make 8-9 charging coils to populate the remainder of space and utilize all the magnets at once for charging a capacitor to dump to car battery.

Meanwhile I've turned the oscilloscope on and blown it up. it was an old Jay Car Dual Channel 20Mhz CRT type. I've checked fuses etc and cannot for the life of me fix it. Having difficulty sourcing a 2nd hand one where i live. Can anyone comment on the use of a cheaper USB digital oscilliscope such as this sort on ebay Sainsmart DDS140 Pcbased USB Digital Storage Oscilloscope 40MHz 200MS S | eBay to handle what it is I am dealing with here?

Any feedback regarded as useful
Thank you

[wrtner]

"Let's start at the very beginning, a very good place to start ... "

http://www.free-energy-info.co.uk/Chapter6.pdf

You could consider Ron Pugh's battery charger, page 5 or any of the other designs. Keep it simple.