This is the variation of Ricks duplication attempt I'm going to make since I already have just about everything to make it.

In Rick's schematic, I don't see why the charging battery needs to be disconnected. It 'may' capture a little wee pulse from the magnets while
the primary is disconnected as long as it stays connected.

In my schematic, I'm only going to disconnect the primary - AND I'm going
to keep the recovery bridge + connected to the + on the primary and
instead, I'm going to connect the - of the bridge to the primary when the
primary battery's - disconnected from the rest of the circuit.

About 6 years ago when I had a bicycle wheel SG running in the back
of my workplace, I had 2 trifillars and 1 of them, I used as a recovery coil.
I got the idea from John's original skate wheel schematic showing a
recovery coil. I pulsed it to a cap and discharged with mechanical switch
with 1:1 ratio and also with a pulley. The discharge switch I used is
virtually identical to what Rick F is using now but mine was more simpler and I could manipulate the copper tabs to flick the switch slower or faster
on each rotation. The switch disconnected the primary and at that moment
it would discharge the cap to the primary. The volts went up on this and
it just worked so so but I proved the concept to myself. I also tried it
without the cap and that worked so so for me too.

At that moment, I messed with the circuit and suddenly thought I
discovered some cosmic energy source when my coil was humming and
a cap bank of over 100,000uf was charging up to 60 volts in just a few
seconds. Basically, discovered the self-oscillating effect...my resistance
was set too high at the base plus having 2000 turns per wire on my
trifilar helped.

Anyway, I tried many variations of these things but the oscillating effect
6 years ago really got me on that track. I found several variations that
made my roller skate motor's primary climb in voltage, but after a while
the voltage was higher but the rpm's got slower and slower. Just like it
was just a fluffy charge that wouldn't power a real load...like itself.

It is possible Ricks method of disconnecting the charging batt will give
better results but only experimentation will tell.

That switch can be put on axle for 1:1 rotation or on pulley system
so more turns per discharge in case wheel is smaller diameter.

You can do this with a roller skate wheel if your switch pulley is big enough
to let the wheel go round plenty to charge the coil before discharging.

Also, I believe it can still be monopole with North facing out from the magnets
around rotor. John mentioned that the S give extra window for the discharge
but with this mechanical switch that has been there since the 1984 book,
it can be whatever window you want regardless of magnet orientation or spacing.

This schematic is what I'm going to do next: