Tommm wrote: ↑
Dec 20 2020 11:13am
matt912836 wrote: ↑
Dec 20 2020 7:47am
it turns out I was after the 6k motor after all and not the 4k motor. Paco offered me a motor core alone to swap onto my 4k gearbox at a discount but I opted to buy a full motor instead, so he sold me one with free overnight shipping straight from china.
Can you shoot some comparison pics?
Here is the 6k mounted, compared with the 4k being held by hand. they are even beginning at the right side cover. much more rotor area and much more solid aluminum side cover on the 6k. air cooling this thing will really make it shine and push it to its maximum potential
DingusMcGee wrote: ↑
Dec 26 2020 7:51pm
I have had 2 Subvotan controllers. I burned up my first Cyclone 3K powering it with a Subvotan in deep snow, too high of a gear and no high temp reset. That controller graciously burned up at the same time but at some 80 - 90 amps recorded on the CycleAnalyst. I forget the other one's history but they were quite nice programming and were great performance wise. However they had no documentation and LA Vendor of these was of ZERO help with their setups.
Bear in mind that both of them were quite short lived. Maybe you can purchase an extended warranty for them if you buy over eBay or Amazon?
I can not help with adjustments for high RPM. But back at the time of Cy3k motor burn up I did post something on this thread about the Subvotan
so im going to take that as the temperature sensor on the hall lines as a "fuse" to stop the motor when it reaches a certain temperature isnt very reliable?
sounds like putting in an actual temp sensor will be necessary when i open it up to make vents holes for the air cooling, and the sabvoton has a setting for reading that too and dialing back power
and so i think ive figured out the whole cyclone sabvoton thing out!
and im sure its all due to a simple mistranslation
as i contacted paco to find out the pole pairs of the motor, he replied "8"
as the sabvoton can only do 30,000 eRPM, and max motor rpm is determined by eRPM/pole pairs, 30,000/8 = 3750rpm
well i hooked up my 96v sabv to the 6k cyclone and WOW it works flawlessly! i got a top speed of 46mph on the road, which is super fast, considering my gear ratio is made for torque. with my gear ratio calculator 46mph would only be possible if i was getting 980 rpms at the output gear, with a 6:1 ratio thats 5800+ internal rpms!!
so i opened up my retired 3k motor just to double check things, and turns out its only 8 magnets total, meaning 4 pole pairs and not 8! im going to assume the 6k is the same exact things, just longer magnets to fill the wider stator
so that should actually be capapble of 30,000eRPM / 4 pole pairs = 7500 max motor RPM!
time to tune these phase amps and flux weakening
slide regen also works amazing since both front and rear sprockets are fixed
BUT ONE PRECAUTION FOR ANYONE USING A SABVOTON
there seems to be some kind of weird bug where if you wire up the motor so it spins smooth but backwards, and use the "motor direction" switch to spin it forward, then enable slide recharge, for some reason my motor would get stuck on full throttle at the point where the slide recharge was suppose to engage! basically you could hit the throttle once and the bike would get stuck on full power until shutting it off! very good thing i always tested with either the wheel in the air or the chain off!!