Re: [ATM] LWT setup questions

["Don Clement" <clement.focuser@verizon.net>]

Nils,

I am glad the ball bearings are working in your application.

Don


>
> Don,
>
> > I would suggest replacing ball bearings with stiction-free flexure
pivots
> > and using a bowed flexure for moving the "wire". Compliant flexure type
> > mechanisms will give higher precision and the more reproducible results
> than
> > ball bearing type mechanisms.
>
> I know that you claim this quite frequently - however, I haven't seen any
> good reason to believe that the ball bearings I use are inferior to
anything
> within reason. These ball bearings are of a precision needed for
positioning
> the R/W heads of hard-disks, and there is no play at all in them - and no
> measurable stiction. Also, I have no such problem at all with my
> remote-controlled tester, relying on two such sets of ball bearings.
>

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