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Hypocycloidal friction drive

Over the years I have tried making this drive, some fairly sucsessfull and others not.

I found the idea in an old Telescope making magazine and would like to make this files available for others to try.

This drive is an internal friction drive and can be made for a reduction of 10000:1 and more very easitly without increasing the size of the unit.

Please let me know if you have made this type of drive and what you think of it.

It will just help others to make this drive more successfully.

Some Great Telescope/Drive making websites
Great Plains Instruments Big equatorial scope plans/drive Exelent
Homebuild Computer operated telescopes. Exelent
Taki's home page Error correction, sky maps, planisphere. Exelent
Willie Koorts Telescope building, satelite tracking. Exelent
ATM Foucualt Testing Exelent
Star Astronomy Links to telescope making Exelent
Mechanical Design of Telescopes for the Amateur Desining any telescope, materials, calculations and design program. Exelent