My problem is that I have ordered a 144V motor after I asked Kelly Controls for the most powerful controller.
That´s why they recommend me KHB14601. But it seems that this "old/new" controller type has some internal problems!
Kelly Controls have also KLS96600 (600A) phase current. But with this "low" voltage I will never reach max turns (1740@144V ==> Kv=12,08).
BTW the motor can handle up to 703A for 3 seconds and 563A for 30 seconds (manufactures statement), so I can go with 600A for the short distance (402m) on the motor.
Well I hope that KLS14401 will now work proper. I will see it.
By next winter I will change the controller again to water cooled Emsiso emDrive500 (125V, 500A/800A, 62kW cont/100kW peak).
So next year I am able to kill the motor
With 125V I will also not reach the top speed but this controller has field weakening option.
I think you're much more controller limited than motor limited in your quarter mile run (just my hunch).
I have a motor that's exactly half your motors width (mine is wound for 16.8rpm/Volt), and when I get back to Santa Cruz from my current work trip, I will throw it on a big power supply and find out what phase current level is where the knee of the iron saturation curve begins, and drive it into saturation a good deal and see what the slope looks like and peak torque values it holds before hopping a pole.
This info should be useful in making informed controller selections for everyone running 273 v3 QS motors, and should give you and idea of what the right controller could drop your 60ft time and 1/4mile time.
If this bike is a hotrod and you're looking for an upgrade project, you could potentially rewind it to yield whatever speed at whatever voltage you like, and/or split the motor phase leads up and run 6 or 9 sets out to enable running multiple controllers.
Edit. *** In case it sounds quick or easy to do, I would personally estimate at least 40hrs of project time to rewind, and if you don't do an excellent job you have to start over.
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