Electric Bikes - Multispeed HubMotor Design

The best way I can see for a hub motor of 1000 watts or so to be the most efficient and cost effective to put together on a Sram DD hub would to make a radial stator about 3/4 thick X 12" OD. The stator teeth about 1" Id. The rotor with high quality magnets with pole connecting iron molded into aluminum or cermac with a housing supported rotor/freewheel bearing that had a Shinamo freeHub pattern broached into the ID of the rotor freewheel....
Wala! a 10"X 3/4" compact Driver motor slides onto the 3 speed Sram DD Hub and is secured by two frame clamps(torque arms) and two motor bolts. about 8 pounds of weight. It would also slide on to any rear shimano freehub and still have room for a BMX pedal freewheel or a 3 speed cassette cluster. The beauti of it is it that the hub motor would install on any bike with a Shimano freehub in minutes. Slide off the cassette and slide on the disk hub motor.
I take it that there is not a market for great ideas that work well in this field.

sure get yourself a working pt then get some investors. ;)

sure get yourself a working pt then get some investors. ;) As far as weighing a few pounds less and not adding to unsuspended wheel weight my center mounted motors perform better! Having proto types or investors does not mean masses of people will break down the door to get the best motor systems for ebikes. I have closly watched this stagnent market grow slowly for the last 20 years with not too much progress other than splitting up the small pie.
Im in the process of packing all unfinished projects away so I can get farther away from the stress world and enjoy the other half of my life more.Sure someone with a BIG pocket of cash might motivate me but doubt it will ever happen.lol

Wala! a 10"X 3/4" compact Driver motor slides onto the 3 speed Sram DD Hub .

Do you mean that this motor is single speed and the pedalling is of 3-speed?

Do you mean that this motor is single speed and the pedalling is of 3-speed?The motor and pedals would each independently power the 3 speed hub by there each freewheel side by side on top of a freehub. Imagine my larger rear sprocket being the motor.

Is anybody selling anything like this? I don't have the skills to make one myself (I don't even understand most of the original post) but a multispeed motor sure sounds nice.

I have seen hub motors with multi speeds but they do not do it with gears, they do it with additional parts in the motor.

Well after seeing the video of him flying up the steep Hawaiian hills, and reading about him flying up the steepest hill in the nation, I'm ready to buy whatever he suggests/sells, lol.

I hadn't seen his video or read the article yet when I made that first post. But now that I have, it was VERY impressive.

Well after seeing the video of him flying up the steep Hawaiian hills, and reading about him flying up the steepest hill in the nation, I'm ready to buy whatever he suggests/sells, lol.

I hadn't seen his video or read the article yet when I made that first post. But now that I have, it was VERY impressive. LOL I am not selling anything.
The motor uses the same Ford alternator stator as used in my wind turbine in this video.
http://www.youtube.com/watch?v=MgABU3S90jY

How hard is it to make these motors for a beginner like me?

Care to post any instructions?

How hard is it to make these motors for a beginner like me?

Care to post any instructions? It took me 40 years to figure out since my first paper route and electric motor I made in 7th grade. Still I can barely type or spell but somehow made it to the point where I don't have to.
Reverse engioneering could be a plan for mass production if anyone came up with lots of $ for production and made a binding commitment. Sorry...
Send me an offer and I'll have my neighbors attorney look over the details while we go surfing. LOL This is what pisses people off but I have shared what I can.
http://sportsillustrated.cnn.com/features/2007_swimsuit/models/tori_praver/
http://www.youtube.com/watch?v=GapJ-Cc94Gg

I have seen hub motors with multi speeds but they do not do it with gears, they do it with additional parts in the motor.

What you have seen is a low torque motor mounted inside a 'single speed' planetery gear system that multiplies the torque and lowers the speed of the motor as a side effect. The speed reduction is not usually a problem but noise and longevity of the many moving parts is. The chief issue, however, is that it is a single speed reduction that is available and 'we' would ideally like a few more than that.

H