Re: ARSG Motors

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

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

Hi Steve, all,

I built an angle grinder RSG like yours, and the
bearings are rather sloppy--no good for low or medium
voltage. The noise, as you pointed out, is appalling.
How about an alternative...

Has anybody tried to use a bench router as an ARSG?
They seem to offer certain advantages: 1) motor speed
is conveniently controlled by a lamp dimmer or a small
variac 2) they already have a collet, so you can chuck
a rotor on as easy as changing a bit 3) precision ball
bearings with very little play would permit very close
gap spacing 4) very high RPM, which would give short
dwell time even with a small diameter rotor 5)
reasonable price thru cheap outlets such as Harbor
Freight or Northern Tool catalogs.

Just speculating out loud thru my keyboard.

Regards,

Greg
http://hot-streamer-dot-com/greg

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "S & J Young by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <youngs-at-konnections-dot-net>
> 
> Coilers,
> 
> If I can't get a TSG working well with a filtered DC
> supply (quench
> problems), then I plan to make an improved variable
> speed RSG.  My current
> one uses an inexpensive angle grinder from Harbor
> Freight.  The grinder is
> really crummy - it has very loud and awful sounding
> gear mesh noise, and the
> bearings have slop in them which prevent being able
> to use close electrode
> spacing.
> 
> But I like the angle grinder approach as it is easy
> to mount, is the right
> RPM range, and has a good built-in means of securing
> the disk to it.  Can
> someone recommend from experience a more precision
> angle grinder which is
> not overly noisy and has good gears and bearings
> with no play?
> 
> Thanks,
> --Steve
> 
> 
> 
> 
> 


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