DingusMcGee
10 kW
Minimun,
By the carrier as output method we would have
(3 x22) /11 = 6
By the carrier as output method we would have
(3 x22) /11 = 6
. The cyclone planetary is 5:1, not 6:1 they state that planely on their website.
It creates a wide setup with poor q-factor and significant loss in efficiency compared to a primary and secondary reduction from chains.
You can build what you like, but its really just bolting whatever cyclone sells onto a bike. Something I've already done and seen the limitations of. If I was to build a 6-10kw bike I'd be using the far superior QS motors in a two stage reduction.
without denigrating others, taking every chance to take chilling potshots t members not even involved in the discussion
. Most important is to avoid trying to be its agent, or you yourself will suffer unforeseen negative results.
DingusMcGee said:Grantmac,
Do you research anything you post on this site?
http://www.qs-motor.com/product/qs-motor-138-4000w-90h-pmsm-mid-drive-motor/
From the above link I see the QS 4000W mid Drive motor weighs 12.8 kg
See Cyclone site
https://www.cyclone-tw.com/product/1/data/15
From the Cyclone 6 kw motor site we see it weighs 5.6kg
It looks like motors designed by QS are not particularly well designed for saving weight? That would be about 16lbs heavier?
The QS motor 4000 w would put my bike at 94 lbs instead of the 78lbs with 6 kw Cyclone motor. That is a significant increase in weight and a significant decrease in power.
For example a lot of dirt bike conversions use the 3kw and 4kw QS mid motors, and they use them at 30kw and 40kw peak, without overheating or damage.
. ... the Cyclone motors are almost rated for peak.
DingusMcGee said:Tommm'
For example a lot of dirt bike conversions use the 3kw and 4kw QS mid motors, and they use them at 30kw and 40kw peak, without overheating or damage.
So the controller that puts out the 40Kw for these dirt bikes might operate at 400amp @100 volt? Or 300 volts at 100amp for the 30Kw.
Could you please provide some links so we see who is doing this and at what expense?
My cyclone 4K has briefly consumed 6800+ watts or about 1.7x above the nominal rating but not 10X of the nominal rating. 12.8kg/5.6kg = 2.29. So maybe we could say the 4K Q motor is really a 4 x 2.69 = a 9.14 kw motor? If it can peak at 1.7 x we get 1.7 x 9.14= 15.54kw. But is 30Kw for 0.001 sec?
. by Grantmac » Dec 16 2020 12:28am
At continuous 2.4kw the Cyclone "3K" is heading for thermal damage in my experience. At least when used for very steep technical climbs at lower RPM.
Some use cases - steep long hills, heavy loadsDingusMcGee said:You likely were in or had too high of a gearing?. Low RPM with high torque causes excessive heating.
Chain growth will be increased by not using a sprocket at the crank. Its distance from the swingarm pivot which does it. Concentric countershaft sprocket=zero growth on single pivot designs, countershaft sprocket +10" ahead of the pivot= lots of growth.
matt912836 said: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.