dogman wrote:Lipo runs great hot. So don't worry about ambient temps in the 100's. If your ride is making it really hot, you need more ah. Toasty warm is fine though. Cooling is important to your controller though.
Guess I sounded bitchy the other day. The single most persistent mistruth about hub motors is that slow windings have more torque. But they sure feel that way to the rider, and are often sold as the torque model.
Not more torque, just less stall. Bet it felt good to have a motor eh!
dogman - don't stop. I appreciate vigorous defense of the facts. I'll send you a box of sweet 'n low. My remarks were speculative, and therefore not helpful. You drove home the point that I need to do some modeling work on the 2810 and collect some data. I'd like very much to submit enough data on the motor to get it listed on the sim - I don't like "faking" the motor on the sim, it makes it look worse-performing than it really is.
For "low speed" ebikes (under 35mph) I'd have to say I really like the 2810 - you just have to feed it 18S LiPo to make it be awesome. But I have to add (to both you and Kinni), I'm convinced that everything - motor, controller and batteries - all run cooler at high voltage/low-ish current than a similar setup at medium/low voltage and high-ish current. That results in lower losses, better efficiency. It cost me more money to build to 18S "72v", but I'm very happy with the results - I've run the setup hard without appreciable heat production. I'm sure your "dirt bike research" bears that out.