Re: variac brushes

• To: tesla-at-pupman-dot-com
• Subject: Re: variac brushes
• From: David Trimmell <davidt-at-pond-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 26 May 1999 19:53:23 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Nick, Make your own. That is what I have done. Find a electric motor
manufacturer or repair shop and ask them if they will sell you any large
brushes. I found two large brushes (5/8"X1"X3") for $3 each. Just file out
the brass holder, and shave the brush down so it fits snugly. My 15 amp
variac is routinely used at 20 amps (limited by my circuit breaker) without
problems.

Regards,

David Trimmell

At 03:59 PM 5/25/1999 , you wrote:
>Original Poster: NickandSim-at-aol-dot-com 
>
>Hi All,
>         for my big coil I have a pair of 2.4kVA claude lyons (or zenith, the 
>two are interchangeable) 240V variacs stacked on a common shaft.  They are 
>both model 100R.  Unfortunately the brushes on one of them have got broken 
>(probably why they gave it to me) Claude Lyons will supply spare brushes but 
>for £31.20 a set *and* their minimum order value is £60 so I would have to 
>buy two sets.  I know £30 for brushes doesn't seem much compared to £200 each 
>for the variacs but it is still a lot more than 2 pieces of carbon should 
>cost.  If anyone has the brushes from a dead 100R or knows where I can get 
>them cheaper please tell me.
>
>Thanks in advance
>Nick Field    
>
>

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