Re: FROM HAL - Starfish Spinner... Reply to Bart

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "The Krohns" <2halice@xxxxxxx>

Hi Bart,

Thanks for your input.  It's always good to hear from you!

Currently, I'm rather satisfied with my original bearing system.  I drilled
a hole in the middle of the spinner to staticly balance it.  So, I filled
the hole with the smallest set screw that I could find at Ace Hardware.  I
positioned the set screw hex end down, so that my homemade brass pivot point
sits in it.  I secured the set screw in place with two lock nuts, one on
both sides.  The thing spins really well.  If you haven't seen the two
videos of my spinner, here are the links:

http://www.halice.com/physics/4coil/spin1.wmv

http://www.halice.com/physics/4coil/spin2.wmv

Cordially, Hal in Tucson




----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, March 01, 2007 12:08 AM
Subject: Re: FROM HAL - Starfish Spinner


> Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>
>
> I've built a few various spinners. Bearings suck! Too much friction
> (all types). The best I used was a homemade needle. I had to get
> everything balanced well to spin well. I've tried low friction nylon
> bearings and small standard steel bearings, but a needle riding in an
> indent worked better than anything else. Balance of course is just as
> important.
>
> Take care,
> Bart
>
> Tesla list wrote:
>
> >Original poster: <davep@xxxxxxxx>
> >
> >
> > > Sometimes a good jeweled needle bearing assembly can offer even less
> > > friction.  They are not too expensive and have very low
> > > friction.  They are also made in very small sizes.  Tucson Bearing
may
> > > be able to order them for you.
> >
> >  a good, metal, 'point in cup' bearing, is quite good, better than
> >  ball bearings fro starting friction, and easy 8)>> to had craft.
> >  Built a spinner once that way for the relatively low
> >  voltage of 15kvdc...
> >   best
> >    dwp
> >
> >
> >
> >
>
>
>
>
>