neptronix said:
Wish i could provide some. My application will be in a 20" wheel in a very aerodynamic ( recumbent ) chassis so whatever result i have won't apply to most folks thinking of using the motor.
Those results will apply to my project quite nicely though. :thumb:
With the new job I obtained, I'm planning on adding a rear suspension(already have front suspension) and going to 16" moped rims all around and possibly Mitas MC2 tires all around(comparable in diameter to 20" bicycle tires/rims), with a Schlumpf HS drive on a 152mm 26/39/52T crankset and 34-11T rear gearing. Either the 1000W or 1500W motor set up with a 3T wind and a 20s4p pack of Panasonic 2170 cells, combined with gearing that would allow climbing steep hills un-powered at 3 mph and 60 cadence and barreling down the highway at 85 mph and 120 cadence, and everything in between, with human power capable of adding to the propulsion at all operating points, would make this vehicle a viable car replacement that performs in a car-like manner, that could be operated like a velomobile with the drive system completely disabled, operate silently with the drive system enabled, and strongly resemble AND FUNCTION LIKE a normal velomobile to the cops with all the electrical guts hidden out of view thanks to the use of a hub motor.
Personally, I'm leaning towards the 1000W motor more than the 1500W motor in spite of the reduced possible power, mainly for the lowered resistance while pedaling unpowered as well as the reduced weight/inertia losses. You don't need much power to go fast in a velomobile, and my next design is going to be significantly more efficient than my last, possibly only needing 6 kW to do 90 mph. Now whether the vehicle would be safe or the motor reliable at such a speed would be another argument altogether, as I don't plan to be pushing its limitations on a regular basis, but have 30-45 mph cruising speeds in mind as the default mode of operation(with a Panasonic 2170 20s4p battery pack plus my pedal input in such a usage case, I would easily have a range in excess of 150 miles plus the ability to cruise on flat ground at 20+ mph with the motor off when the pack runs dead, and with recharge/meal stops along the way, possibly could cover 500 miles a day in such a vehicle for pennies worth of electricity and a few dollars of food/water).
I can tell you from opening up the 30mm version is that it's as finely constructed as the 35mm motor i bought in late 2014 that started this thread. I think we can expect the dyno data that leafbike has presented us to be as accurate as it was for the 35mm.
My guess then is that the 1 kW motor may be good for 3 kW peak unmodified, and if it is similarly under-rated like its larger brother, perhaps 1.5 kW continuous. Which may mean with fans/ferrofluid/holes/other mods, possibly up to 6-7 kW peak for short bursts and 2 kW continuous.
I'm looking forward to your results and to you completing this project.