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Just found it on "ElMoto", it has forced air cooling which is smart (and, I'm sure, necessary). They are going to race this year, which'll be good to work out the bugs. I love how it frees up so much room in the frame and gets rid of belts, chains and sprockets. Mark says that he can put them in any size wheel, which is helpful because I don't want to change from the 3.5" & 5.5" 17" wheels that are stock on my Ducati chassis. I know about the unsprung weight thing being "bad", but how "bad"? There sure are a lot of problems solved by going this route.

They might use supercaps, but realize this, you don't want a ton of regen in a motorcycle. Most of your braking is on the front wheel. If you regen through the motor, the rear could break traction and cause you to loose control....

and most of the currents we're talking for regen on a motorcycle, most lithium batteries can take it

Supercaps are expensive for the amount of energy storage you'd use them for, and they need BMS as well, to ensure each one in the string isn't overcharged.

You brought up some interesting points, do hub motors have regen? if so it would be good to have a front wheel one on a bike. Is it possible to hook up regular front brakes to regen? Is regen worth the bother, complication and expense? So it sounds like Supercaps aren't ready for prime time yet, too bad sounds like they've got the charging and weight thing licked

Quote from: briogio on February 13, 2011, 11:42:16 PM

Thanks a lot for that!, I did see that motor last year but I forgot all about it. I really like the idea of a sealed, water cooled motor, especially in a motorcycle. It's nice and compact too with all the matched bits in one kit. I don't really understand the difference in characteristics between AC and DC motors though, what are they?

As far as the rider is concerned, there aren't any differences.  They both produce full toruqe at low speed, and produce that full torque for quite a while.  AC Induction motors don't have Permanent Magnets, so you can run them a little hotter.  Most magnets these days don't want to see over around 130 - 150C, where as the insulation of the wires is the temperature limiting device on an AC induction motor, so that is around 200C.  With that increase in temperature it makes it easer to transfer heat out.  For weight, a well designed PM motor will be lighter than a well designed Induciton motor.  The rotor on an induction motor will be slightly heaver than that of a PM machine, so that could affect handeling of the motorbike a bit I guess. The controllers are essentially the same for a PM brushless motor and an AC Induction motor, they just need slightly different feedback.  A PM motor needs position feedback and an induction motor needs rotor speed feedback.  DC brushed motors have simpler controllers, but the control of those motors is limited through the commutator which limits the top speed and power of brushed motors.

 I like the fact that the Green Motorsport AC motor is water cooled, that makes sense to keep temperatures in a specific range, and it's sealed from the elements unlike Agni's etc., also it's more compact/smaller. Does 3 phase work like 3 gears? Yeah the weight does seem competitive, I'm definitely leaning towards the GM motor.

I'm seriously thinking of using twin Agni motors to power my 2000 Ducati M900S chassis, is anyone else in North America interested?

Just curious what you guys think, I'm putting it, or them, in Ducati Monster chassis and so far dual Agni's seems to be the way to go ...

I'm building an e-bike on a 2000 Monster S chassis (Ohlins rear, 43mm adj. front). The first thing I have to do is make a rear mount that ties in the swingarm, rear frame rails and mounts the e-motor near the swingarm pivot. Do you have any pictures of how you did it?
Thanks

Hi fellow enthusiasts!
My name is John and I started my motorcycle "amour" in England with a BSA Bantam, Francis-Barnett, MZ, then My BMW R75/6 which I brought with me to Canada on the boat. Crashed it and got a 1975 Ducati 860GT in 1978, I went across the country and down to LA on it, a lot of miles, loved that bike. Since then I've always loved Ducati's, built and raced a round-case (1972/3) 750. Then in 2000 I treated myself to a brand new Ducati Monster 900S, 3 years ago I blew the motor bad enough to send aluminum shards throughout it, now I want to use the chassis to build a "kneeler" style, prone positioned,"dustbin" faired, super slippery, electric MONSTER! I'm going to keep a photo log, ask a lot of questions (because although I'm a fairly good mechanic, I'm kind of clueless on the electrical front )
Looking forward to the adventure