Re: Angle grinder RSG

[Terry Fritz <twftesla-at-uswest-dot-net>]

Hi Daniele,

	I think the 11000 RPM motor is a brush type of universal motor.  I don't
think it will have the nice poles and stuff set up in it to be a sync
motor.  The rotor may have windings on it and all too so grinding on it is
not possible.

	You may be able to put some kind of speed regulator on it, but you must
control the position of the rotor to within about 5 degrees in relation to
the AC signal.  That is beyond almost any regulator especially for a brush
motor.

Cheers,

	Terry

A>t 10:02 PM 6/30/00 +0200, you wrote: 
>Hi all,
>great job ! list is up again we are all on the run again :)
> 
>I am planning to do a RSG using a cheap Angle Grinder  I had for 15$...
>11000 Rpm, 600 Watts of power, 230 VAC powered.
>I want to reduce and regulate  rpm by the use of triacs... the motor is a 
>brush type,
>and I have seen lots of kits for this purpose...
>I will spin a plexiglas disc  250mm diameter, 10 mm thick, 4 rotating 
>electrodes, 2 stationary.
> 
>Do you have any suggestions ?
> 
>tnx all again
> 
>ciao
>Daniele
> 
>