MAPUGMeade Advanced Products Users Group
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The generic failure mechanism has been discussed ad nauseam on the pages of MAPUG (2) and many other internet-based telescope user groups, and stems from the use of tiny plastic components and encoders in the gearbox, whizzing around at up to 14,000 RPM, to slew heavy telescopes on a mount originally intended for 20cm aperture tubes.
(2) MAPUG (Meade Advanced Products Users Group): http://