On Saturday 03 January 2009, Dean Hedin wrote: >Take this one for example: > >http://www.hobby-lobby.com/brushless-gazaur.htm > >The R/C motors are rated with "Kv". Which means rpms per volt with no load. >The above motor is rated at 4100kv and can go up to 12volts. >So that would be 49200 rpm. > That link says up to 14.8 volts, which would be nearly 61k rpms.
But surely a motor of that size cannot be rated for CCS service. 450 watts of input (30+ amps at 14.8 volts) would fry it in 2 or 3 minutes even if it was pumping its own cooling air. Or at least I'd think so. And this is the sort of info I'd need. Bearings aren't mentioned either, and even torrington needles have limits of around 150k rpms for their teeny cartridges needles. >If you want to seach google again try "R/C Brushless Motors" > >Be advised you will require a special controller/driver for these motors. The 'brushless' bits aren't in the motors? How about the controller then, what does it cost, approximately, for one rated to handle 500 watts? >----- Original Message ----- >From: "Gene Heskett" <[email protected]> > >> Unforch, I just spent 15 minutes googling for those, and found absolutely >> zero real information on those motors. And I don't buy pigs in a poke I >> can't see through. > >---------------------------------------------------------------------------- >-- _______________________________________________ >Emc-users mailing list >[email protected] >https://lists.sourceforge.net/lists/listinfo/emc-users -- 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) Snow Day -- stay home. ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
