I will check and see if there isn't something in the middle between the 9C 9x7 which is close but not quite enough, and the 5000W continuous CroMotor
spinningmagnets wrote:I will check and see if there isn't something in the middle between the 9C 9x7 which is close but not quite enough, and the 5000W continuous CroMotor
The current value leader for hot rods is the MXUS 3000W V2 (45mm wide stator, thick aluminum stator support, thin laminations)
The common 9C you mention had a 27mm wide stator, thicker laminations, and a thin stamped steel stator that was lighter than thick aluminum, but provided no temperature heat-spike absorption.
Power-wise, the 35mm wide stators are between those two. The Leaf 1500W has thin lams, but no aluminum stator. The MXUS 1000W has thin lams and an aluminum stator support, but only 28mm wide.
For this application, I'd suggest the Leafbike, and add ferro fluid. It comes in 4 different windings. About the same cost as the MXUS 3000W, but lighter and narrower. If you are leaning towards only needing a little more power than the 9C, get the MXUS 1000W V2 (with FF?)...it can take more continuous and peak amps, generates less heat than the 9C for the same input watts, sheds heat better after its warm...
The thought of a 3000 watt MXUS running through the gears on a very short wheelbase recumbent is a bit scary. Better run the throttle through the CA to tame it down a lot, or you will find yourself on your back before you can say goddamn!
spinningmagnets wrote:The V1 MXUS has the thicker laminations, and efficiency is slightly below 90%. The V2 has the aluminum stator support and the thinner laminations (makes less waste heat per watt applied, plus absorbs existing heat to spread it out), and efficiency slightly above 90%. If you like super hard acceleration and high top speeds, get the 3000W model.
Yes, the ferro fluid (FF) is a new development, and it works. For $25-ish it allows internal stator heat to transfer to the aluminum side-plates much more rapidly, and from there to shed to the outside air...
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