Re: ATM Large Worm Gears

[Adam Perkins <scopeguru@yahoo.com>]

--- Peter <kitgears@kitgear.com> wrote:
> 
> Has anyone thought of buying a molded plastic gear
> rack, folding and
> attaching it around a wooden circle (say 12-20" OD)
> and driving it with a
> low cost worm gear? The worm needs to be mounted at
> the correct lead angle
> which can easily be calculated.
> 

Hey, 

There's an old Sky and Telescope article about just
this sort of thing, using a long metal rack brazed
together at the ends.  The builder heated the whole
thing to expand the metal, and let it shrink over a
metal circle to make a big gear.  It's worth reading
if you're trying this method.

I forget the issue number, but could check it for you
if you need.  It was probably 20 yr ago...

Adam Perkins

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