Re: Gaps and caps

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

Original poster: "Malcolm Watts by way of Terry Fritz <twftesla-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

Hi John,

On 16 Sep 2002, at 12:06, Tesla list wrote:

> Original poster: "John Richardson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <jprich-at-up-dot-net>
> 
> Hi all,
> Reading the latest concerning cap temps, and people checking them with their
> hands and even their faces(!).  Why not purchase one of those neat temp guns,
> the kind where you point at the object, pull the trigger, and the temp
comes up
> on an LCD screen?  They have really come down in price, and work extremely
> well.  This way temps could be checked during operation safely.

How far away from the target can they be used? LCD screen => delicate 
electronics and I'm not sure about the wisdom of using something like 
that near a device running hundreds of amps and hundreds of kV.

?
Regards,
Malcolm

  Used to use
> them to check exhaust manifold temps between cylinders on trucks to find
out if
> a cylinder wasn't firing properly.
> Reading Gary Lau's response to Steve's sucker gap problems, and he
mentioned to
> keep electrode size as large as possible for heat dissipation.  The last E-6
> Mack engine that I had to overhaul had valve lifters which were about 2.5
> inches long, approx. .5" dia., with a large (maybe .75-1.00") flare on the
> end.  The best part is that this flare is carbide faced, so should make a
long
> lasting electrode.  If anyone does look into this, check with a Mack
dealer or
> diesel rebuilder to see if they have any old ones for free, as new ones are
> outrageously expensive.
>  
> John Richardson
> 
> 
> 
>