MXUS 3000 Hub Motor - V1 V2 V3

[n2mb]

I can personally attest that the MXUS 4T has quite a bit more grunt than the TC3080 with same amp/volts imput and all other things being equal. BUUTTT.... the TC 3080 is 5 pounds lighter and the quality of the motor's construction is more refined.

Did they have different winding and different top speeds in that case?

[litespeed]

Is this motor still the best 3000W hub motor available?

How does it compare to the Crystalyte Crown TC3080?

Does anyone know where I can buy one built with a wheel in the US?

Actually the QS 205 is the best 3000 watt motor out there but is heavier than the MXUS. http://www.cnqsmotor.com/en/article_rea ... r/746.html

Tom

[n2mb]

Is this motor still the best 3000W hub motor available?

How does it compare to the Crystalyte Crown TC3080?

Does anyone know where I can buy one built with a wheel in the US?

Actually the QS 205 is the best 3000 watt motor out there but is heavier than the MXUS. http://www.cnqsmotor.com/en/article_rea ... r/746.html

Tom

Looks good, except requires 200 mm dropouts? I'm guessing that wouldn't fit most mountain bikes.

[Rix]

I can personally attest that the MXUS 4T has quite a bit more grunt than the TC3080 with same amp/volts imput and all other things being equal. BUUTTT.... the TC 3080 is 5 pounds lighter and the quality of the motor's construction is more refined.

Did they have different winding and different top speeds in that case?

Yes, I can't remember which one was faster, but there was a 2mph difference in top speed.

[litespeed]

Is this motor still the best 3000W hub motor available?

How does it compare to the Crystalyte Crown TC3080?

Does anyone know where I can buy one built with a wheel in the US?

Actually the QS 205 is the best 3000 watt motor out there but is heavier than the MXUS. http://www.cnqsmotor.com/en/article_rea ... r/746.html



Tom

Looks good, except requires 200 mm dropouts? I'm guessing that wouldn't fit most mountain bikes.

I must have linked the wrong2 one....it’s 152mm!

Tom

[n2mb]

Is this motor still the best 3000W hub motor available?

How does it compare to the Crystalyte Crown TC3080?

Does anyone know where I can buy one built with a wheel in the US?

Actually the QS 205 is the best 3000 watt motor out there but is heavier than the MXUS. http://www.cnqsmotor.com/en/article_rea ... r/746.html



Tom

Looks good, except requires 200 mm dropouts? I'm guessing that wouldn't fit most mountain bikes.

I must have linked the wrong2 one....it’s 152mm!

Tom

Got it! Do you know somewhere that sells it built into a high quality complete wheel?

[n2mb]

I can personally attest that the MXUS 4T has quite a bit more grunt than the TC3080 with same amp/volts imput and all other things being equal. BUUTTT.... the TC 3080 is 5 pounds lighter and the quality of the motor's construction is more refined.

Did they have different winding and different top speeds in that case?

Yes, I can't remember which one was faster, but there was a 2mph difference in top speed.

Know any suppliers where I could buy a MXUS built into a wheel shipped to the US? I can't seem to find anyone selling them anymore.

[Rix]

I can personally attest that the MXUS 4T has quite a bit more grunt than the TC3080 with same amp/volts imput and all other things being equal. BUUTTT.... the TC 3080 is 5 pounds lighter and the quality of the motor's construction is more refined.

Did they have different winding and different top speeds in that case?

Yes, I can't remember which one was faster, but there was a 2mph difference in top speed.

Know any suppliers where I could buy a MXUS built into a wheel shipped to the US? I can't seem to find anyone selling them anymore.

No, not at the moment. Just aliba.

[n2mb]

Slightly off topic.

I've decided to go with the crystalyte motor.

Thoughts on choosing a TC3065 with 26" wheel vs TC3080 with a 20" wheel? Both at 60v, 50a continuous, 70a peak.

I'd like to go up to 40 mph, with great acceleration on the road. Not much off-road use.

I'm considering the Luna 60v 24.5ah triangle pack because I can't seem to find a high quality 72v or higher triangle pack with high quality cells, such as Panasonic GAs.

Thanks!

[markz]

How long has your bearings lasted?


My freewheel side bearing does not move one bit. Plus it seems about 1mm above plate lip.
17mm x 34.85mm (old battery in micrometer)
17mm x 35mm (eyeballing it with ruler)
I will buy local, I know where these guys are.
http://transmissionsupplies.com/wordpress1/

If we don’t have the products you require, we will attempt to find what you need, with the quickest turnaround time possible.

Our customers range from individuals looking for bearings, to residential homeowners looking for v- belts for their furnaces, to commercial companies and large industries like:

6003RS
QX or GX
Is inprinted on the stock bearing.

Search
viewtopic.php?f=2&t=92101&p=1346256&hil ... S#p1346256
viewtopic.php?f=6&t=23996&p=1047950&hil ... S#p1047950
viewtopic.php?f=31&t=66472&p=999175&hil ... RS#p999175
viewtopic.php?f=2&t=92101&p=1345692&hil ... S#p1345692

Now if I could just have a strong wheel that wont break spokes.

[LuckySchwinning]

I have a MXUS V2 4T laced into a 17" moto wheel running a 20s3p battery and Sabovoton 100A Controller. I have just finished the build and am in the process of testing. I have it running on the stand. Hall sensor angle test good. But when I sat on it and gave it throttle I rolled across my basement but it was pulling around 40 amps at a very slow crawl. I don't think that seems correct. I do weight 200 lbs. That's like 3200 watts and I am barely moving.

If anyone has some insight into what I assume is something I have done incorrectly I would greatly appreciate some help... Best Regards...

[amberwolf]

Wrong phase / hall combination, most likely. See the thread for Determining The Wiring For A Brushless Motor for ways to fix that.

[LuckySchwinning]

Thank you for the advice. Would that still be the case if the hall test looked good in the Sabvoton software?

[markz]

I have a MXUS V2 4T laced into a 17" moto wheel running a 20s3p battery and Sabovoton 100A Controller. I have just finished the build and am in the process of testing. I have it running on the stand. Hall sensor angle test good. But when I sat on it and gave it throttle I rolled across my basement but it was pulling around 40 amps at a very slow crawl. I don't think that seems correct. I do weight 200 lbs. That's like 3200 watts and I am barely moving.

If anyone has some insight into what I assume is something I have done incorrectly I would greatly appreciate some help... Best Regards...

Can I ask how you like the MXUS V2 4T (same as mine) in a 17" moto (I am in 26" bicycle rim)
Do you have a shitton of torque?
Whats your speed like?

[LuckySchwinning]

Honestly I don't know yet. I just put the build together. And then my girlfriend took my laptop for a test prep this week I am definitely more focused on torque for the type of riding I do. I don't need range since I am going to be using it on an indoor track. I had a 19" wheel laced in to the MXUS but decided I should build the 17" wheel because its so hard to find motorcross nobbies for the 19 incher. Hopefully I will be able to work out the high amp problem which I am sure is exactly what you said a hall phase combo problem. What type of acceleration do you get w/ yours? What type of tire are you running? How many amps are you pulling w/ ur set up?

[LuckySchwinning]

I should have said what amberwolf said.... Maybe I need to work on reading comprehension.

[mpmoller]

Have anyone tried to replace the hall-sensors in the mxus? Can i take any hall-sensor or what can i use for a replacement?

[amberwolf]

I did that in one of mine:

viewtopic.php?f=2&t=67833&p=1261391#p1261391

viewtopic.php?f=2&t=67833&p=1261391#p1261397

[amberwolf]

I need some help from anyone with definite data on this series of motors.

I'm testing a controller (SFOC5 in Hall Sensors'b'Gone thread) that needs some specific motor parameter data to set it up:

kV
Phase resistance
inductance

for both the 3T and the 4T versions.

I've found a few posts with info on that for this series of motors, some in this thread (primarily first post), and some here
viewtopic.php?f=31&t=76109&hilit=mxus
but not all of it matches, and i'd like to find the "definitive" data if there is any.

What I found so far, is:
3T:
kV = 11.89, 11.9, 12.02,
inductance = 230uH
phase resistance = 0.060ohm, 0.072ohm

4T:
kV = 8.9, 8.93,
inductance = uH
phase resistance = 0.110ohms, 0.112ohms


based on:

viewtopic.php?f=2&t=92101&hilit=mxus#p134506821X3T Winding

Phase resistance = 0.072 Ohms
RPM at 50.2V = 597, 11.89 Kv
1.78A/89.4 Watts No Load

16X4T Winding
Phase resistance = 0.110 Ohms
RPM at 50.2V = 448.2, 8.93 Kv
1.08A/54.2 Watts No Load

viewtopic.php?f=31&t=76109&p=1149467&hi ... A#p1149467

3T = 11.9 Kv, 4T = 8.9 Kv,
Torque Constant (Kt): 3T = 0.8Nm/A, 4T = 1.07Nm/A,

viewtopic.php?f=2&t=92101&p=1346169&hil ... e#p1346169

21X3T Winding:
12.02 Kv
0.796 Kt (Nm/A)
0.072 Ohms resistance (Measured from end of base phase wire, (~1 meter Lead to Motor axle)
Weight (Bare Hub Motor): 9.0 Kg
Km (per Miles' Database Formula): 2.965

16X4T Winding:
8.9 Kv
1.073 Kt (Nm/A)
0.112 Ohms resistance (Measured from end of base phase wire, (~1 meter Lead to Motor axle)
No-Load Current at 50.2V: 0.6A, 447 RPM
Weight (Bare Hub Motor): 9.0 Kg
Km (per Miles' Database Formula): 3.206

viewtopic.php?f=2&t=92101&p=1346109&hil ... e#p1346109

Inductance of the 3T <snip> ( about 230uH)

3T:
Max. Continuous Phase Current: 55A
Overheat in 10 Minutes: 85A
Overheat in 60 seconds: 242A

4T:
Max. Continuous Phase Current: 42.6A
Overheat in 10 minutes: 66A
Overheat in 60 seconds: 186A

this post
viewtopic.php?f=2&t=92101&p=1346079&hil ... e#p1346079
has a pic with an inspection database of certain values, indicating that sometimes significant phase resistance measurement differences occur due to motor-to-controller phase wire length or gauge


Once I'm sure I have the right parameter data, then at least I'll know any issues with the controller are not caused by wrong info there.

[L3chef]

Hello! Recieved my mxus v3 3k that I ordered from MXUS alibaba. Shouldn't the v3 come with 4mm phase wires as standard? I think mine are 2.5mm .. I don't have any caliper here with me to measure them but they don't look to be 4mm..
Thoughts?

https://ibb.co/dOrzre

[teslanv]

Hello! Recieved my mxus v3 3k that I ordered from MXUS alibaba. Shouldn't the v3 come with 4mm phase wires as standard? I think mine are 2.5mm .. I don't have any caliper here with me to measure them but they don't look to be 4mm..
Thoughts?

https://ibb.co/dOrzre

Those look like 4.0mm2 phase wires to me.

Keep in mind the "4.0mm2" refers to the cross sectional area NOT the diameter of the wire.

The Diameter of a 4mm2 wire is close to 2.5mm.

[L3chef]

Hello! Recieved my mxus v3 3k that I ordered from MXUS alibaba. Shouldn't the v3 come with 4mm phase wires as standard? I think mine are 2.5mm .. I don't have any caliper here with me to measure them but they don't look to be 4mm..
Thoughts?

https://ibb.co/dOrzre

Those look like 4.0mm2 phase wires to me.

Keep in mind the "4.0mm2" refers to the cross sectional area NOT the diameter of the wire.

The Diameter of a 4mm2 wire is close to 2.5mm.

All good then! Thank you!

[MixhaL]

Hi
What is a top speed of motor 6T at sabvoton controller and square wave controller at 18s 75V?
At square wave controller at 75V I had about 30-32mph at flat - motor 6T V2
At sabvoton 72150 ( flux disable) at 75V I have only 25mph at flat - motor 6T V3

I think speed should be similar on both controllers.
Difference is about 20%, I think there is too big difference.

[markz]

One broken magnet, measures 45mm x 14mm x 2.83mm
Not bad for a few years of service.

https://www.umagnets.com/c/neodymium-ma ... ts/page/3/
50mm x 15mm x 5mm N35, Coating Nickel-plated (Ni-Cu-Ni), Max. working temperature 80°C
$3.99

Would grinding work on something like that?

broken magnet.jpg (92.71 KiB) Viewed 2292 times

[madin88]

One broken magnet, measures 45mm x 14mm x 2.83mm
Not bad for a few years of service.

https://www.umagnets.com/c/neodymium-ma ... ts/page/3/
50mm x 15mm x 5mm N35, Coating Nickel-plated (Ni-Cu-Ni), Max. working temperature 80°C
$3.99

Would grinding work on something like that?

Aside from that it will be a pain in the ass to grind or cut mangets, the main problem will be the thickness of 5mm through which it is magnetiszed.
If you would grind it down to 2.8mm you would loose almost all of it's magnetism.

I would have some 45mm MXUS V2 (non-bended) magnets lying around which i would give you for free (shipping costs covered) if you want.