RE: [TCML] Strike rail hits and loud bangs

["Stephen J. Hobley" <shobley@xxxxxxxxxx>]

No I think that it was arcing from the outer primary to the strike rail.
I raised the toroid about 1/2" and removed the rail - no more bangs.

You can see the differences from adding just one extra turn of primary:

Before:
http://www.stephenhobley.com/tuned.jpg

After:
http://www.stephenhobley.com/tuned2.jpg

20 second exposures at 800ISO / F5

I'll try it with the rotary gap and see what happens.

Steve

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
Behalf Of David Nelson
Sent: Thursday, October 02, 2008 11:30 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] Strike rail hits and loud bangs

Is there a chance that the loud bang is a spark between bottom of the 
secondary and the inner turn of the primary? Overcoupling. I had this
and I 
removed half a turn from the inside of the primary and re-routed the
wiring 
(down and out) to fix the problem. I kind of feel that performance went
down 
slightly, but no more loud, annoying and scary bangs.

Dave Nelson
----- Original Message ----- 
From: "Stephen J. Hobley" <shobley@xxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Wednesday, October 01, 2008 11:37 AM
Subject: [TCML] Strike rail hits and loud bangs


We have a fairly simple coil using a 60ma NST. Recently I changed the
tap 
point on the primary and by chance hit a really sweet spot.

Usually the Tesla Tuner is pretty accurate and gives good results, but
in 
this case it did not indicate that this tap point was a good one.

The streamer length has increased by at least 50% - but we did notice
some 
rather worrying "bangs" from the Terry filter spark gap when the strike
rail 
is being hit. Is this normal?

Is it possible to tune a Tesla coil into a self-destructive state?

I would take some pictures, but the darned thing scares me to death...
:-)

Steve




_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla


_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla