Re: dc rotary motor

["BunnyKiller" <bigfoo39-at-telocity-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Tesla List wrote:

> Original Poster: "bob golding" <yubba-at-clara-dot-net>
>
> Hi all,
>     I have been thinking about rotary gaps. At Corby I tried Mikes
asynchronous
> gap on my big coil. I was impressed by the performance. I noticed that the

Snipperzzz....


Hi Bob ...

I tried out an assembly similar to what you have in mind...
I used a Dayton 9 amp motor controller for a brush style motor ( an old router
motor) and had good results in controlling the motor speed at slow easy
adjustments
while increasing the speed ... but when slowing down the motor, the inertia
of the
disc caused erratic control factors. The motor would "buck" a bit ( the
rpms would
increased and then decrease and then again untill it was at the adjustment
it was
set for on the controller, also the brushes would spark a bit while slowing
down)

The system worked great on my lower powered system ( 3 -at- 15KV 30mA nsts)
but the
pig system ( 14KV  700mA )  gave the controller hell, it would have fits
trying to
keep the motor at a constant speed ...   ( blaming it on RF and feedback
even tho I
had an EMI RF filter on the A/C line )


Scot D