Also, while on this topic, why don't telescopes use ribbed pulleys and
belts instead of gears like printers and scanners use. Just consider
the accuracy of todays ink jet printers. I do believe the LX-200 16"
uses this arrangement. Seems like a cheap way to go over any gears.
Your thoughts.............\

AV


writes:
>
> > ...I hope this work description works for you...
>
> Perfectly! Thanks, Doc.
>
> Next question: why use a worm in the first place if it's so
> difficult to
> get it right? A worm is an easy way to get a large reduction but a
> series
> or regular gears will do the job, too.
>
> Also, GEM manufacturers like to brag about how big their gears are.
> Why
> does this matter?
>
> Finally, why is it seemingly so hard to make good gears? From a
> software
> point of view :-) a gear is just a silly hunk of metal with a funny
> shape
> that ought to be easy enough to cut with CNC machine: set it up,
> pump out a
> hundred pieces per hour. What am I missing?
>
> --
> Emerald Hills, CA USA http://nineplanets.org/
>
>

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