Where to buy High RPM motor?

PhilWeaver

Finding my (electric) wheels
Feb 24, 2010
7
0
I currently have a Juicybike kit with a geared brushless motor for a 26 inch wheel.
I've now moved onto a recumbent bike with 20" wheels. I have the kit for sale but I am considering converting the recumbent.
Obviously if I build the hub into a 20" wheel it will have a dire top speed, as it was with the 26" wheel I often pedalled faster than the top speed of the motor (de-restricted) but could still commute with an average speed of 16mph over 14 miles. (all off road of course).
Ideally I'd like a high RPM motor which when attached to my 36v brushless controller and battery would assist up to at least 20mph, I'm not worried about hill climbing or setting off, I would be happy with low torque and getting rolling before applying power.
Are there any motors designed to give 15mph on a 17inch wheel that can be purchased relatively affordably? Or could I purchase a motor designed for 24v and safely run it at 36?
The only place I have been able to find is GoldenMotor but it's quite expensive and in the smaller sizes they are all casted wheels.
Thanks in advance.
 

Chief eZee Power

Pedelecer
Feb 8, 2007
51
1
Shanghai
350 rpm motors

eZee has 350 rpm motors now, primarily for a new category of ebikes allowed now for 45 kmph speed. Unfortunately we have never tried building wheels less than 20". Radial lacing might do the job but you will have to find those spokes.

Chief eZee Power
 

PhilWeaver

Finding my (electric) wheels
Feb 24, 2010
7
0
That sounds perfect, are they only available from overseas? I've googled and drawn a blank, do you know where I could purchase one?
 

JuicyBike

Trade Member
Jan 26, 2009
1,671
527
Derbyshire
Phil
It's possible that just the internal gears need changing. We're a little pushed at the moment and possibly someone else here (I'm thinking of Flecc who posted on a v similar subject v recently) will know at once whether and where etc. But when we do get a moment we can see what other internal gears we can match to that motor to get the revs matched.
 
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PhilWeaver

Finding my (electric) wheels
Feb 24, 2010
7
0
I did initially search for a change of gears, even wondered how fast it would turn with the gears locked up but decided that was a poor idea!
I'll have a look fo Flecc's thread but would be very interested in this as a possible solution.

I should add that I have been very impressed with the Juicybike Kit, I can't actually imagine how it could be any better within the constraints of the law.

The only thing I did was remove the spring from the throttle as I commute 14 miles each way and my thumb got tired holding it down!

Any info gratefully received
 

PhilWeaver

Finding my (electric) wheels
Feb 24, 2010
7
0
Oh and please excuse my manners, thanks also for the information on Ezee, that sounds like a plan also!