On Wednesday, February 08, 2012 08:27:41 AM andy pugh did opine: > On 8 February 2012 14:52, gene heskett <[email protected]> wrote: > > That would take a lot of math I don't have > > a clue about how to do in order to fit the teeth precisely to the > > diameter of each step, all diddled so the motor comes back to the > > same rest position for each speed. > > There is a handy calculator here: > http://www.hpcgears.com/calc.htm > Bookmarked! Thanks.
> The way I was going to do it was with permanently-engaged pulleys and > belts free-running on bearings on the input shaft, with a keyed, > sliding dog to choose which one engages the shaft. But I fooled > myself into thinking that the oil-bath would make it all quiet enough. I'd have to start with an all new housing design, that one is accessible to anything smaller than an adult mouse. Not even the grease stays where you put it. :-\ Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> A door is what a dog is perpetually on the wrong side of. -- Ogden Nash ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
