of course you mean 130rpm/V ... otherwise that would be a very slow motor....
On Fri, May 9, 2008 at 5:15 PM, Andrew Wowk <[EMAIL PROTECTED]> wrote: > I contacted Matt Shumaker to see if he knew of any more powerful RC > motors. He recommended this one: > > http://www.unitedhobbies.com/UNITEDHOBBIES/store/uh_viewItem.asp?idProduct=5139 > > There's also a 130v/rpm motor of similar size. > > The main thing I noticed after purchasing the 180v/rpm motor is that the > windings are not varnished. The motors are probably only designed for a few > hundred hours of use if that. If planning to use it, I would first remove > the can and varnish the windings. Also, the windings didn't pass a 100v > megger test. They did pass a 2,000k ohm DC resistance test with a DVM > though. The phase to phase resistance was very low at 12.5 mohms. > > There are no hall sensors. The motors need a special controller to take EMF > feedback from the windings themselves to sense position. Hence, it may take > some extra hall sensors to get these to work with a Kelly controller for > example. > > They would make one heck of a powerplant for something like a Schwinn > scooter, or even a larger road scooter like an Oxygen Lepton. They wouldn't > be too bad for a dirt bike if the speed was kept slow enough. > > On Wed, May 7, 2008 at 11:22 AM, john fisher <[EMAIL PROTECTED]> wrote: > >> Its electric anyway, and some nice build details, including use of a >> very-high efficiency RC motor and RC controller >> parts. and data logging. >> >> http://www.wisil.recumbents.com/wisil/shumaker/default.htm >> >> Things I like: >> its light. >> its really light, well its a bicycle. :) >> the use of high-rpm RC plane motor - terrific KW-weight ratio. >> Nice packaging >> DAQ >> >> Things I wonder about: >> the home-made drive line to gear down that motor to usable speeds and >> torque >> that motor- will it stand up to regular use? >> >> I envy: >> his CNC tools >> >> What ifs: >> what if you used a couple of these motors to drive the front wheel of a >> 2wd dirt bike? That would be way simpler than >> all the other 2wd systems, though limited to about 6 hp. You'd have to >> have a planetary/some_other gearbox custom built, >> possibly inside the hub. But 6 hp might well be enough on a light bike. >> >> I think this project captures the lightest possible end of the spectrum >> from bicycles to motorcycles. For a heavier >> project, is it worth giving up the thermal mass of a big torquey motor if >> your batteries weigh 150 lbs? Maybe not, but >> MC projects are always looking to get lighter. >> >> hope you find it interesting and not too OT. >> John >> >> > -- Travis Gintz 1986 Honda VFR DC conversion Http://blog.evfr.net/
