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RE: Disc Construction
>-----Original Message-----
> From: Tesla List [mailto:tesla-at-pupman-dot-com]
>Sent: Saturday, May 08, 1999 1:11 PM
>To: tesla-at-pupman-dot-com
>Subject: Re: Disc Construction
>Original Poster: "Reinhard Walter Buchner" <rw.buchner-at-verbund-dot-net>
>Hi Brian,
>>Original Poster: "Basura, Brian" <brian.basura-at-unistudios-dot-com>
>>You're comment about the start/stop of the actual spark not coinciding
with
>>the mechanical dwell is correct.
>>Note-This spreadsheet was intended as a tool to get the mechanical
>>components in the ballpark and not necessarily a representation of the
>>electrical behavior.
>Sure, I wasnīt trying to put you down. I just thought it would be worth
>mentioning, thatīs all.
No problem, Just making sure the intent was clear (I'm no math giant so a
complete simulation of the electrical behavior, well, that's just beyond my
current skills).
>>As for the offset. Let me see if I can explain it without resorting to
>>ASCII...
>>Take a simple rotor, equally spaced rotating electrodes, and two fixed
>>electrodes (one on each side of the rotor). The offset would be the
>>centerline difference (if any) in the two fixed electrodes.
>>If the fixed electrodes are in line with each other then the mechanical
>>dwell will be maxed and determined by the speed of the rotating electrode
>>and it's diameter. If you offset the centerline of the fixed electrodes
>>(without changing any other parameters) you will reduce the dwell since
the
>>overlap will be less.
>Oh, okay I get it now, but wouldnīt you do the same thing, by simply
>reducing the electrode size?. E.g. Your offset is so that you only use
>1/2 of a 1" electrode. In this case you could simply use a 1/2" electrode
>instead, it would make no difference. However, the offset (or electrode
>diameter reduction) will also reduce the wear rate vs. current capability.
Absolutely correct. The advantage (as I see it) is the ability to easily
adjust the dwell without having to machine different sized electrodes...
>Coiler greets from germany,
>Reinhard
Hope you're feeling better...
Brian D. Basura