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QS 3000w midmotor

Posted: Apr 04 2018 9:34am
by bionicon
Anybody tried this motor already?
Just make an order for one, gonna try it with a sabvoton 72200 :D
qs motor.jpg
qs motor.jpg (68.02 KiB) Viewed 9522 times

Re: QS 3000w midmotor

Posted: Apr 05 2018 6:05pm
by sn0wchyld
link? ive never seen qs offer the motor on its own - always as part of a package with their rear swingarm.
from memory- the motor is quite wide (too wide for practical use on a bike) but that price seems very good... too good? :P

Re: QS 3000w midmotor

Posted: Apr 06 2018 2:42am
by bionicon
They don't advertise the motor, but if you send a mail You get this page.The motor is 160mm in diameter and 150mm length.The weight in the pakage is 15kg, so i think there will some copper inside :D

Re: QS 3000w midmotor

Posted: Apr 06 2018 8:25am
by efMX Trials Electric Freeride
does the qs mid motor have a chain drive option such as 420 chain??

Re: QS 3000w midmotor

Posted: Apr 06 2018 10:05am
by bionicon
Yes they gonna put on a 13theeth 420 sprocket. I had the option for 420 428 or 520 sprocket.

Re: QS 3000w midmotor

Posted: Apr 06 2018 10:49am
by efMX Trials Electric Freeride
bionicon wrote:
Apr 06 2018 10:05am
Yes they gonna put on a 13theeth 420 sprocket. I had the option for 420 428 or 520 sprocket.
sweet:) looking forward to seeing some builds with this motor.. any frames in mind.. have any of you guys seen the Le-Bui adventure frame kit yet?? would be even sicker with a left hand mid drive..

Image

Re: QS 3000w midmotor

Posted: Apr 06 2018 3:59pm
by bionicon
i am going to try it on my derbi senda frame with a sabvoton 72200 controller,need more torque....hope that it will satisfy me :D

Re: QS 3000w midmotor

Posted: Apr 06 2018 4:03pm
by bionicon
here are the dimensions of the motor
138电机外形图 (1).pdf
(26.85 KiB) Downloaded 436 times

Re: QS 3000w midmotor

Posted: Apr 15 2018 2:41am
by bionicon
I hope this motor is like the 205 hub motor (also rated at 3000watts) but at the end you can pull more then 14 kw out of it :shock:

Re: QS 3000w midmotor

Posted: Apr 24 2018 5:51am
by bionicon
In the description of the motor by magnets there is 70mm height 40 pcs and 5 polepairs. That confuses me because when there 40 magnets it should be 20 polepairs or am i wrong?

Re: QS 3000w midmotor

Posted: Apr 30 2018 2:21pm
by bionicon
this is a picture of the rotor does anybody know why the magnets are posisioned like that?
rotor magneten.jpg
rotor magneten.jpg (18.12 KiB) Viewed 8965 times

Re: QS 3000w midmotor

Posted: Apr 30 2018 4:18pm
by spinningmagnets
The magnets run cooler that way, and you can run higher power without worrying if the magnets will permanently lose power from too much heat.

Re: QS 3000w midmotor

Posted: May 30 2018 3:58am
by Monstarr
I received this motor yesterday. Looks good on first appearance. QS mounted 22 tooth HTD pulley on it on my request.

To save me from a lot of headache, can someone send me the DCF file for this motor to be run with a Sevcon gen4 (size 2)controller? :!:

Re: QS 3000w midmotor

Posted: May 30 2018 4:19am
by eee291
Monstarr wrote:
May 30 2018 3:58am
I received this motor yesterday. Looks good on first appearance. QS mounted 22 tooth HTD pulley on it on my request.

To save me from a lot of headache, can someone send me the DCF file for this motor to be run with a Sevcon gen4 (size 2)controller? :!:
So how much did it cost with shipping and VAT?

Re: QS 3000w midmotor

Posted: May 30 2018 4:37am
by Monstarr
eee291 wrote:
May 30 2018 4:19am
Monstarr wrote:
May 30 2018 3:58am
I received this motor yesterday. Looks good on first appearance. QS mounted 22 tooth HTD pulley on it on my request.

To save me from a lot of headache, can someone send me the DCF file for this motor to be run with a Sevcon gen4 (size 2)controller? :!:
So how much did it cost with shipping and VAT?
uhmm I purchased it within a local groupbuy so difficult to tell you the exact shipping costs. Motor with mounted pulley was around $200 which is somewhat the standard QS price, shipping was around $ 80-90 for the motor within a 6 motor total groupbuy. Duty & VAT were about 50 euros. So 275-300 euros total.

Re: QS 3000w midmotor

Posted: Jul 08 2018 2:53pm
by larsb
Please report how this motor works for you all when you have some mileage on it.

I am on the hunt for a new motor, thinking of buying this one with their rear pulley and controller as a kit and do a belt conversion for my Rieju moped build.

They're sold at Alibaba for 400 USD with a matched controller:
https://www.alibaba.com/product-detail/ ... 13818.html

Or at Aliexpress:
https://www.aliexpress.com/item/QS-3000 ... 39323.html

Re: QS 3000w midmotor

Posted: Jul 10 2018 6:30am
by bionicon
i am running the motor now for a few months with a sabvoton 72150 unlocked at 58 volts on my derbi senda.
Settings are 200 batteryamps 450 faseamps, we make hard drives in the woods for 3 hours every week with no problem so far :D
Maybe i will change to 84volts for more power :roll:

Re: QS 3000w midmotor

Posted: Jul 10 2018 7:41am
by madin88
bionicon wrote:
Jul 10 2018 6:30am
i am running the motor now for a few months with a sabvoton 72150 unlocked at 58 volts on my derbi senda.
Settings are 200 batteryamps 450 faseamps, we make hard drives in the woods for 3 hours every week with no problem so far :D
Maybe i will change to 84volts for more power :roll:

Nice to hear that. 58V x 200A = 11,6kW :)
How does it handle the 450A phase?
Could you say a bit more about the general performance and how it compares to the Hacker Q150 setup?

Re: QS 3000w midmotor

Posted: Jul 10 2018 9:09am
by bionicon
if i compare to the hacker motor is difficult, the hacker controller has a delay at take-off, the qs and sabvoton has way more startingtorque .My bike weight is arround 85 a 90 kg and i can keep up with my friend who's driving a qulbix 76 with qs205 and 16kw.
I am sure if i raise the voltage at 84 volt i can do powerwheely's :D

Re: QS 3000w midmotor

Posted: Jul 10 2018 12:52pm
by larsb
What is your wheel size and reduction ratio?

I run 17" wheels and 1:4 to the rear wheel. Power wheelies is the goal but right now my moped does 90 km/h so it's not very strong

Re: QS 3000w midmotor

Posted: Jul 10 2018 1:10pm
by madin88
bionicon wrote:
Apr 30 2018 2:21pm
this is a picture of the rotor does anybody know why the magnets are posisioned like that?
rotor magneten.jpg
This design is called IPM.
Instead of placing the magnets on the surface, steel laminations are used to direct the magnetic flux to the stator.
As it happens inside the stator steel there can be also eddy currents in the magnets, which means the magnets will become hot just if they pass the stator teeth, and this IPM design schould reduce the eddy currents in the rotor to a minimum (lower no-load losses and higher usable RPM).

So basically what spinningmagnets said, just bit more detailed explained.

Re: QS 3000w midmotor

Posted: Jul 10 2018 3:50pm
by bionicon
larsb wrote:
Jul 10 2018 12:52pm
What is your wheel size and reduction ratio?

I run 17" wheels and 1:4 to the rear wheel. Power wheelies is the goal but right now my moped does 90 km/h so it's not very strong
I run 19" wheels and 1 : 6 to the rear
madin88 wrote:
Jul 10 2018 1:10pm
bionicon wrote:
Apr 30 2018 2:21pm
this is a picture of the rotor does anybody know why the magnets are posisioned like that?
rotor magneten.jpg
This design is called IPM.
Instead of placing the magnets on the surface, steel laminations are used to direct the magnetic flux to the stator.
As it happens inside the stator steel there can be also eddy currents in the magnets, which means the magnets will become hot just if they pass the stator teeth, and this IPM design schould reduce the eddy currents in the rotor to a minimum (lower no-load losses and higher usable RPM).

So basically what spinningmagnets said, just bit more detailed explained.
Thanks :)

Re: QS 3000w midmotor

Posted: Jul 12 2018 7:55am
by larsb
Found this on cnqsmotor.com:
image.jpeg
image.jpeg (93.14 KiB) Viewed 8411 times
No load @ 72v/5290rpm: 11.33 A
Thisi is high but seems to be with gearing and rear wheel and IPM motors have higher no load current due to the higher inductance than surface permanent magnet motors

kV: 73

Peak efficiency: 89.5%,

It's more than OK if the complete drive gets 89.5% eff. including drive losses :D

Re: QS 3000w midmotor

Posted: Jul 12 2018 8:03pm
by markz
Looks like a great motor.
Subscribed!

Re: QS 3000w midmotor

Posted: Jul 13 2018 2:35am
by larsb
I'd be interested. Pm sent.