synchronous RSG or not

["D.Wightman" <dwightman-at-mmcable-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Recently i ran my 8 inch coil at various speeds on my rsg. it has 6 rotating
electrodes and 2 fixed electrodes,the drive motor is d/c with a built in
tachometer..The coil is powered by a 14400 * 5kva pole pig..the rpms were from
1000 to 5000 rpm...all of this is on video tape which is 30 minutes long..an
interesting phenomona happens..at fairly low power levels and slow rpms the
coil will function very well it was easy to get 5 foot ars, by turning up the
rpm of the rsg at this point there is no visible improvement in performance..
when you turn the power up to the coil it would tend to want to arc down the
secondary, and also hit the secondary..by increasing the rpms of the rsg at
this point it would seem to go back into tune and the destructive arcing would
stop..at this point you can really crank up the power to the pole pig and get
nearly constant 8 and one half and 9 and one half foot sparks.. this secondary
coil is only 25 inches high!!!! now upon further experimentation...at full
power..rsg at 5000 rpm 10 foot sparks super hot, hitting a metal support beam
for building we would begin to adjust the speed of the rsg..down at approx 2000
to 1000 rpm the destructive arcing would propagate..arc length was effected by
at least 10 to 15% "reduced arc length"..at 700 to 1000 rpm you would see white
hot spots on the secondary coils,by turning the rsg at that point immediatly
back to the 2500 to 3500 rpm range the hot spots went away and the unit was
really getting with the program. at that point the rsg was turned up to around
5000rpm, it seemed that power output was slightly reduced maybe 5 %...
unfortunatly this experimentation has destroyed the secondary but the results
are very interesting for those of you who would like a copy of the tape let me
know.. in the end, you will see it with lots of smoke pouring out of the
secondary and a small fire .....these things are GREAT...now for the question
one must ask...why do most perfer synchronous rsg's?? what is the point.. it
did seem that a spark gap can be tuned for a specific power level....does
synchronous operation tend to mostly protect the caps or the transformer.....i
realize that the 60hz a/c cycle can be optimized, sort of,, by selecting a rpm
on a rsg that tends to "hit" at the peak of each cycle...but i really did not
see this..thanks everyone.