Re: speed determination

Thanks Tony,

I think one of your "strobes" is still on top of my Sherline mill now!

Alan Marconett

Tony Jeffree wrote:

>
> At 05:58 23/03/2001 +0000, you wrote:
> >A flourescent light and a print of concentric circles with different
> >sector ratios (black units vs. white units can get you close enough
> >to interpolate the 'betweeners'. Remember the ne-2 glow of turntables
> >and the "strobe pattern" around the disk?
> >
> >Hope this helps.
> >
> >Ballendo
> >
> >P.S. On one site (wedemyers? or a link from/to?) there's a little
> >tach made of a dc motor from radio shack.
>
> Take a look at:
>
> http://www.jeffree.co.uk/Pages/speedmeasurement.html
>
> for some ready-made strobe disks etc..
>
> Regards,
> Tony