Re: Sync gap test

["Tesla list" <tesla-at-xxxxxxxxxx>]

Original poster: "Jon Rosenstiel" <jonr-at-pacbell-dot-net> 


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, November 29, 2000 5:10 PM
Subject: Sync gap test


> Original poster: Esondrmn-at-aol-dot-com
>
> Well, I fired up my new sync rotary gap last night on my 3.0" coil.  I did
> change the electrode gap spacing to .025".  It took me 20 to 30 minutes of
> trial and error to get the motor phase angle set correctly.  I basically
set
<snip>

Ed,

Would do me a favor? Immediately after a run or two check the temperature,
(by feel), of the rotating electrodes.
I went through the same basic process as you described and found that when
my 240bps SRSG was adjusted for best spark, four of the rotating electrodes,
(1800rpm motor), were cool to the touch, (the other four were warm). This
indicated to me that the gap was firing at120bps. Sure enough, when I
removed the four cool electrodes there was no change in the operation of my
coil.

Next I tried to adjust the timing of the 240bps rotor by adjusting the
firing angle so that all eight rotating electrodes were operating at the
same temperature. I managed to achieve this, but the spark length was down
so I decided to stick with 120bps. I don't know why I couldn't get my coil
to work at 240bps. (A future project)!

Regards,

Jon