MXUS coming out with a 5K-Turbo motor, 55mm Magnets

[markz]

Any news?

 

[Jestronix]

Any news?

I hear ya, what happened here ?

 

[teslanv]

A few of us have some samples incoming, but MXUS just told us the order was delayed due to "Paint" issues...

I guess they want them to look pretty since they know we are going to plaster tons of revealing images of them on this thread. :wink:

 

[ridethelightning]

subd

 

[Rix]

A few of us have some samples incoming, but MXUS just told us the order was delayed due to "Paint" issues...

I guess they want them to look pretty since they know we are going to plaster tons of revealing images of them on this thread. :wink:

In a weird shitometer sort of way, that makes sense.

 

[Jestronix]

A few of us have some samples incoming, but MXUS just told us the order was delayed due to "Paint" issues...

I guess they want them to look pretty since they know we are going to plaster tons of revealing images of them on this thread. :wink:

In a weird shitometer sort of way, that makes sense.

Soon there will be Shit hawks and samsquanches

 

[Rix]

Soon there will be Shit hawks and samsquanches

YAH!!!!!

 

[macribs]

Meanwhile somewhere in China;
QS 205 55H. Magnet Height: 55mm, price 273 $.205 55H got 60% more torque then Mxus 5K.

QS 205 55H: Max torque 184 N.m. Rated for 4000 Watt
QS 205 50H: Max torque 168 N.m. Rated for 3000 watt
Mxus 5k 55H:Max torque 110 N.m. Rated 4000 watt.



Anyone tested QS 205 55H? A 10% increase in torque and even 30% higher rating for power vs 205 50H, and 60% more torque then Mxus 5K Turbo. I wonder what to expect from that motor compared to the 205 50H? Acceleration, speed and heat wise.

Notice the 205 55H got equal power rating, but twice the size phase wires as the Mxus 5K, and 205 55H also got 60 % more torque then the mxus 5K.

Thinking this might be a good fit for the new Vector mid drive frame. Loose the rim, either get custom cover with sprocket or modify existing sider cover to take a sprocket.

 

[Rix]

Meanwhile in China; QS 205 55H. Magnet Height: 55mm, 16 pole pairs.

QS 205 55H: Max torque 184 N.m. Rated for 4000 Watt

QS 205 50H: Max torque 168 N.m. Rated for 3000 watt



Anyone tested QS 205 55H? A 10% increase in torque and even 30% higher rating for power. I wonder what to expect from that motor compared to the 205 50H? Acceleration, speed and heat wise.

Thinking this might be a good fit for the new Vector mid drive frame. Loose the rim, either get custom cover with sprocket or modify existing sider cover to take a sprocket.

Hey Mac, would this fit a swingarm less than 170mm wide?

 

[macribs]

Click the image below for the full pdf of the motor drawing.
It says 99.5mm from very side of side cover to next sidecover. If you check with vito I am pretty sure they can press fit standard 205 50H axle into the motor. If they can should be no problem at all. If not you might need to do some axle or drop in mods.

Notice the 205 55H got equal power rating as the mxus 5J, but twice the size phase wires as the Mxus 5K, and 205 55H also got 60 % more torque then the mxus 5K. Got two more kilos of weight too.

From what I can see of the performance curve the efficiency of the motor is 90.7% @72v80A with 5.3 kw. I wonder what the numbers would be with 350 A or even 550 A peak current? Here is the performance chart. http://www.cnqsmotor.com/upfile/205_Motor_Performance_Curve/10_205_55H_V3_72V_1321RPM.pdf

 

[markz]

OK, but what about price?
QS 50H and 50H, 5K?
Thats a lot of torque missing, but who's to say them #'s are correct, 110 and QS.
I mean looking at 110 vs 168 or 184, the 5K no ones got yet.

Meanwhile somewhere in China;
QS 205 55H. Magnet Height: 55mm, price 273 $.205 55H got 60% more torque then Mxus 5K.

QS 205 55H: Max torque 184 N.m. Rated for 4000 Watt
QS 205 50H: Max torque 168 N.m. Rated for 3000 watt
Mxus 5k 55H:Max torque 110 N.m. Rated 4000 watt.

 

[macribs]

I don't know what the price for mxus 5K will be. The QS 205 55H is 279$.
The torque I picked from this thread, it might be right or it might not. However that mxus 5K is still not available so who knows?

 

[ridethelightning]

phase wire size of 50H/55 H are at least in the power ballpark for what these will be capable of running, not spec, but peak requirements of end user 8)
the mexus 3k phases are a joke, and no room for upgrade either- biggest deal breaker. i suspect the 5k will be a similar story.

 

[teslanv]

phase wire size of 50H/55 H are at least in the power ballpark for what these will be capable of running, not spec, but peak requirements of end user 8)
the mexus 3k phases are a joke, and no room for upgrade either- biggest deal breaker. i suspect the 5k will be a similar story.

The MXUS 3K Phase wires are 4mm2. Since the cross section of the 3T winding is 4.12mm2, I don't agree with your conclusion that the 3K's phases "are a joke". More like MXUS actually determined what phase wire size was needed, and designed to suit their fastest winding.

Let the record show that each winding "#T" will have the following cross-sectional area of copper:

21x3T = 4.12mm2
16x4T = 3.14mm2
12x5T = 2.36mm2
10x6T = 1.96mm2

The areas are calculated by taking the size of one strand of magnet wire (0.5mm Diameter, or 0.19635mm2 ) and multiplying by the number of wires in parallel for each winding.

 

[Rix]

Click the image below for the full pdf of the motor drawing.
It says 99.5mm from very side of side cover to next sidecover. If you check with vito I am pretty sure they can press fit standard 205 50H axle into the motor. If they can should be no problem at all. If not you might need to do some axle or drop in mods.

Notice the 205 55H got equal power rating as the mxus 5J, but twice the size phase wires as the Mxus 5K, and 205 55H also got 60 % more torque then the mxus 5K. Got two more kilos of weight too.

From what I can see of the performance curve the efficiency of the motor is 90.7% @72v80A with 5.3 kw. I wonder what the numbers would be with 350 A or even 550 A peak current? Here is the performance chart. http://www.cnqsmotor.com/upfile/205_Motor_Performance_Curve/10_205_55H_V3_72V_1321RPM.pdf

The way I am reading this drawing, from the axle face to the center of the motor is 99.5mm on one side and 100mm on the other side. That tells me the axle face's width is 199.5mm. Or am I missing something?

 

[macribs]

My mistake. You are absolutely correct Rix. +100 mm from center line to other side.

Custom swing arm worthy?

 

[markz]

So we will need 200mm rear dropout to fit the MXUS 5K and there are no solid #'s for its torque.

 

[amberwolf]

No, that's a QS motor.

 

[madin88]

Meanwhile somewhere in China;
QS 205 55H. Magnet Height: 55mm, price 273 $.205 55H got 60% more torque then Mxus 5K.

QS 205 55H: Max torque 184 N.m. Rated for 4000 Watt
QS 205 50H: Max torque 168 N.m. Rated for 3000 watt
Mxus 5k 55H:Max torque 110 N.m. Rated 4000 watt.

above values seems to be the torque near saturation, and this torque should be quite similar above ALL 205 dia motors with same stator width.
So the 55mm MXUS should be at par with the 55mm QS in terms of maximum torque, but the question now is how many watts of heat are produced at this torque (copper losses).
if the MXUS has no improved copper fill referring to the "V3 3k turbo", than the QSV3 will eat it in terms of continuos power (probabaly even the 50mm V3).

 

[macribs]

if the MXUS has no improved copper fill referring to the "V3 3k turbo", than the QSV3 will eat it in terms of continuos power

Copper losses is that possible for vito to get from his engineering team? If someone have a contact at mxus maybe mxus too can provide copper losses so a more correct comparison could be done?

 

[madin88]

if the MXUS has no improved copper fill referring to the "V3 3k turbo", than the QSV3 will eat it in terms of continuos power

Copper losses is that possible for vito to get from his engineering team? If someone have a contact at mxus maybe mxus too can provide copper losses so a more correct comparison could be done?

it is simple: just measure the phase to phase resistance and compare it. the motors you compare should have similar kV.

 

[teslanv]

It finally arrived! 8)

Here are the test results:

Bare Motor weight: 14.82 Kg (32.6 lbs.)
Winding Tested: 30x3T
Kv: 13.3 RPM per volt (666 RPM at 49.9 V)
Kt: 0.718 Newton-Meters/Amp (0.53 Ft-Lbs/Amp) [Derived from Kv, not tested directly]
Motor Km: 3.462
No Load Watts: 125 Watts
No Load Current: 2.51 Amps
Phase to Phase resistance: 0.043 Ohms
Motor Construction: 32 Magnets (16 Pole Pairs), with 36 Stator teeth. ~90 strands copper fill in various windings. (30x3T, 22X4T, 18x5T, 15X6T)
Staor body is ~208mm diameter, which is about 10mm larger than a typical "205" Stator, that I've measured at about 198mm Diameter)

 

[markz]

Good stuff Teslanv, very good stuff!
Its going to be a motor
Can't wait to get my hands on it.

Hmmm which motor would be close on the ebikes.ca motor simulator?

 

[Rix]

Good stuff Teslanv, very good stuff!
Its going to be a motor
Can't wait to get my hands on it.

Hmmm which motor would be close on the ebikes.ca motor simulator?

None that I can see, not even the 4503, its pushing 11+kv, not 13+ like this one and the stator is 10mm narrower on the 5K. This motor is kind of a game changer as far as any DD motors that weigh under 35 pounds.

 

[macribs]

I wonder how it will stack up against the Qs 205 v3? What is the outside diameter of the 5K? The width and the axle size?
Any idea of performance at 20s 350 phase A? Too bad 5K is not in the simulator.