Re: Uniflow Gap (tsg)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Metlicka Marc by way of Terry Fritz <twftesla-at-qwest-dot-net>" <mystuffs-at-orwell-dot-net>

John,
Don't feel bad, if you go back into the archives you'll see that i went
from "it's great, too it's ok" many times. I used alligator clip leads
and would notice arcing, even very slight, at the clip. many things to
see, many things to try.
I'm just happy to see you're at least giving it recognition now.
Take care,
Marc

Tesla list wrote:
> 
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<FutureT-at-aol-dot-com>
> 
> Hello all,
> 
> I did some more tests comparing the Uniflow TSG with the sync rotary.
> 
> It turns out that my TT-42 was sputtering even with the sync-gap.
> I think some of the abusive tests which burned the secondary may
> have caused other damage, etc.  The secondary may be shorting
> out intermittently or something.  I'll probably have to rewind the
> bottom two inches of the secondary.  Also, my tap-point connection
> may have been loose.  I wiggled some wires, and the sputtering
> seems to have stopped.  It's sputtering less with the TSG too.
> It's one of those cases where other problems are clouding the
> issue.  Nevertheless, the Uniflow TSG works fine, and gives nice
> 40" sparks.  The sparks seem to break out more from other
> toroid areas using the TSG compared to the rotary, but the
> sparks are no longer and are often shorter.  It's possible I don't have
> the rotary phased just right, because I don't have the remote
> phase controller hooked up to it.  I also noticed that if I reduce
> the voltage to the HEIC, it helps to stop some sputtering.  So it
> seems the HEIC trigger voltage may be critical too.  The hair
> dryer seems to give enough cooling/quenching air.  I explained
> the setup in yesterday's posting.
> 
> Another thing I did is to adjust the trigger electrode so it reaches
> farther towards the center of the hollow gap, so it's more directly
> in the airflow.  This may keep the trigger a little cooler and result
> in steadier operation.  I set the main gap spacing at 5/8" but
> since the trigger is in between, it's effectively a 1/2" gap I guess,
> and it probably always arcs though the trigger making it effectively
> a two gap series gap.
> 
> Overall, the results with the Uniflow TSG and John Tebbs
> controller are excellent at this power level.
> 
> Cheers,
> John