QS 3000w midmotor

The testing is without reduction, if with 1: 5.3 radio, the RPM is about 4139
For flux weakening report, will post later.

Grantmac said:
What about flux weakening for that motor? RPM including reduction it seems?
 
Controller of 1000w 2000w 3000w mid drive motor

For 1000w mid drive motor, we suggest EM50SP
View attachment 5
Specification:
View attachment 4
Unit price for sample:
1000w mid drive motor: $125/pc
EM50SP(40V/60V): $55/PC
EM7250SP: $70/PC
https://www.alibaba.com/product-detail/QS-Motor-1000W-90-mid-drive_62090424624.html?spm=a2747.manage.0.0.5a3e71d2LNPn3I

For 2000w mid drive motor, we suggest EM100SP
EM100.jpg
Specification
100.jpg
Unit price for sample:
2000w mid drive motor: $192/pc
EM100SP: $155/PC
https://www.alibaba.com/product-detail/QS-2000W-120-70H-electric-mid_62090434246.html?spm=a2747.manage.0.0.5a3e71d2LNPn3I

For 3000w mid drive motor, we suggest EM150SP
EM150.jpg
Specification

Unit price for sample:
3000w mid drive motor: $235/pc
EM72150SP: $210/PC
https://www.alibaba.com/product-detail/QS-3000W-138-70H-electric-mid_62089015208.html?spm=a2747.manage.0.0.5a3e71d2LNPn3I
 
Have not now.

lesta said:
Any Votol’s EM 300 controllers coming?
 
The peak current is phase current, rated current and boost current are battery current.

The phase current can be adjusted, but we do not suggest.
Yes, EM7250SP is 72V.

Grantmac said:
Is the EM50 "peak current" battery or phase? Can you adjust phase current?
The EM7250SP is the 72v version right?
 
QSMOTOR said:
The peak current is phase current, rated current and boost current are battery current.

The phase current can be adjusted, but we do not suggest.
Yes, EM7250SP is 72V.

Grantmac said:
Is the EM50 "peak current" battery or phase? Can you adjust phase current?
The EM7250SP is the 72v version right?

Why dont you suggest adjusting the phase current?

Also what is the maximum RPM of the 1000w when using flux weakening?
 
Grantmac said:
QSMOTOR said:
The peak current is phase current, rated current and boost current are battery current.

The phase current can be adjusted, but we do not suggest.
Yes, EM7250SP is 72V.

Grantmac said:
Is the EM50 "peak current" battery or phase? Can you adjust phase current?
The EM7250SP is the 72v version right?

Why dont you suggest adjusting the phase current?

Also what is the maximum RPM of the 1000w when using flux weakening?

The phase current in the controller parameter is fix, you do not need to change it.
The max RPM for 1000w mid drive motor is about 4000RPM, the max speed can be about 50-60km/h

Thank you,
Judy
E-mail: judy@tzquanshun.com
 
I have got water in my motor so one hall sensor is dead. Opened up motor and there's a pcb that is activated by a sensor magnet ring.
image.jpeg

I cannot find the exact hall sensor from the markings but it might be a copy of SS511AT from honeywell (precision bipolar SMT mount sensor) since it has C511A 145 marked on it.
image.jpeg
 
larsb, this may actually be a (kind of) good information. However, seems like there was no sealant whatsoever under the little side cover, right? If so, I think you should get replacement parts under warranty. They should’ve applied some silicone in this place in production. Look at the photos attached. Apart from the fact my motor came with broken hall mount (they put some white goo to hold it, instead of replacing the damn thing), there is a substantial amount of blueish sealant applied on every cover. So I think you should report it to QS and expect a replacement. Hope you’re gonna fix the problem soon. Good luck mate.
 

Attachments

  • 20190524_113811.jpg
    20190524_113811.jpg
    69.5 KB · Views: 2,939
  • 20190524_113835.jpg
    20190524_113835.jpg
    75.6 KB · Views: 2,939
  • 20190524_113854.jpg
    20190524_113854.jpg
    37.9 KB · Views: 2,939
  • 20190524_113901.jpg
    20190524_113901.jpg
    29 KB · Views: 2,939
Just wondering what the shaft diameter is on the 1000w motor?

I'm looking to fit a powergrip belt and pulley to drive a 10inch go kart wheel with a bore of 33mm and 6 holes spaced the same as a 160 mm brake disc.
 
Can anyone confirm that this comes stock with a taper shaft and 22T pulley? Also, is 6600RPM a hard limit for the 3000W - as in the rotor will self destruct or is it more a limit for core and hysteresis losses, or just as fast as you can go with FW and 72V? I'd think being an IPM that it could probably handle some significant over speeding above it's rated RPM.
 
Bartosh said:
.. I think you should report it to QS and expect a replacement. Hope you’re gonna fix the problem soon. Good luck mate.

Thanks! I will get a replacement PCB from QS free of charge, it's on it's way :D
 
Finally I got my hall mount and PCB replacement from QS. Free of charge, of course. So now it's time for some bench (re)testing. BTW I need to admit that I'm happy with the QS support after all :thumb:
 

Attachments

  • 20190530_130211.jpg
    20190530_130211.jpg
    34.5 KB · Views: 2,744
hello I need to mount a 34 tooth pulley on this engine. Do you know if Qs motor can supply pulleys larger than 22 teeth?
You confirm me that the belt is a 8M 25mm wide? Thanks for your help.
 
ok thank you for the answer I ask the question to Qs but for the moment I have no answer from them.
 
hello, I asked the question to Qs to know if they can provide a pulley of 34 teeth but they propose me to replace it myself. They only shred the 22-tooth pulley, but if I want they can take it apart ...
 
Yes because it is a heavy machine of 400 kg. The bridge has a reduction of 8 and it would take 7 or 6 at most.
With a 5kW engine running at 3500rpm, the speed is 30km / h with 8 réduction. But I want to 50km/h.

I found composite pulleys, it is necessary to machine the center to adapt it on the motor shaft. It seems perfect.
https://www.123courroies.com/modules/shoperize/mobile/deploy/#!/product/72590
 
On my vehicle there is a primary reduction and a secondary reduction. The secondary reduction is 8 turns for 1 wheel revolution.
I wanted to lengthen the reduction by installing a smaller pulley on the box than on the engine.But smallest pulleys are 22T.
Finally I think that with the pulley of origin it should work very well. Leaving a direct drive between the engine and the reducing bridge will make 4250 rpm to the engine for 50 km / h.
If the engine runs at 5600 rpm it will be 65km / h ... So the engine should not force too much and do not over heat.
 
hello

the motor can be shorter?
looking the disassebled video each cover have plenty empty room
 
Back
Top