MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Place for dealers to post items for sale.
User avatar
madin88
10 MW
10 MW
Posts: 2496
Joined: May 27, 2013 2:02 am
Location: Austria

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by madin88 » Apr 19, 2016 9:11 am

circuit wrote:Is it possible to custom-wind it for 1T? I would not use it in a hub, but so far this is the best motor I have tried (V2) due to very low cogging.
yes they have quite low eddy losses, but i believe if you spin them above 1000rpm or something like that, the losses will grow to a level you don't want to deal with.
- Votec V-FR frame / MXUS 3T / 17" Mitas MC11 / Adaptto Max-E / 20s12p 25R -> approved as L1e moped and fully road legal in EU :)
- Vector white / MXUS 4T / 24" Hookworms / Adaptto Max-E / 22s11p 25R
- KTM Hardtail Pedelec / eZee V2 6T / 27,5" / Kelly KBSX @ 1,5kW / Torque PAS / CA-V3 / 13s4p Sanyo GA in Shark case

User avatar
Offroader
10 MW
10 MW
Posts: 2014
Joined: Sep 08, 2013 9:03 pm
Location: USA

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by Offroader » Apr 19, 2016 9:32 am

sh33p wrote:Hard to imagine more torque with these motors. The V2 design pulls really well, so the V3 should be something indeed.
teslanv wrote:Another surprise from MXUS. They can now build the 3000W motors with thicker curved magnets, which should give these motors a bit more torque. When I get the next batch of motors in, I will let you know by how much that torque has increased over the old V2 magnet design.

The photo below shows their Geared hub rotor with both "Flat" and "Bent" Magnets, as an example.
Bent Magnets.JPG
Will be interesting. I am going to get one of these and compare it to my Cromotor V2.

I have a few very steep climbs that I use for comparison purposes. It is like my bike just gets up them. Will be interesting to see if the MXUS can do it at the same power levels.

User avatar
teslanv
1 GW
1 GW
Posts: 3028
Joined: Nov 03, 2013 8:42 pm
Location: Bellevue, WA - USA
Contact:

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by teslanv » Apr 19, 2016 1:11 pm

circuit wrote:Is it possible to custom-wind it for 1T? I would not use it in a hub, but so far this is the best motor I have tried (V2) due to very low cogging.
3T is about 12Kv. I've considered having MXUS make us a 2T winding for our race bike, which would have a Kv of about 17 RPM per volt.
I can't even imagine the controller it would take to run a 1T winding. (I assume that would be for a mid drive???)
I build custom ebikes.
http://www.westcoastelectrics.com
West Coast Electric Cycles
Bellevue, WA
USA

User avatar
Offroader
10 MW
10 MW
Posts: 2014
Joined: Sep 08, 2013 9:03 pm
Location: USA

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by Offroader » Apr 19, 2016 2:21 pm

I think what we need is a 4.5 T, maybe better for off road bikes.

User avatar
madin88
10 MW
10 MW
Posts: 2496
Joined: May 27, 2013 2:02 am
Location: Austria

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by madin88 » Apr 19, 2016 2:32 pm

Offroader wrote:I think what we need is a 4.5 T, maybe better for off road bikes.
What we need is such motor with aluminum hub (like Bionx or grintech motor). this way the weight could be easy reduced by 2-3kg.
- Votec V-FR frame / MXUS 3T / 17" Mitas MC11 / Adaptto Max-E / 20s12p 25R -> approved as L1e moped and fully road legal in EU :)
- Vector white / MXUS 4T / 24" Hookworms / Adaptto Max-E / 22s11p 25R
- KTM Hardtail Pedelec / eZee V2 6T / 27,5" / Kelly KBSX @ 1,5kW / Torque PAS / CA-V3 / 13s4p Sanyo GA in Shark case

User avatar
circuit
100 kW
100 kW
Posts: 1414
Joined: Mar 19, 2009 11:43 am
Location: EU
Contact:

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by circuit » Apr 19, 2016 3:25 pm

teslanv wrote:
circuit wrote:Is it possible to custom-wind it for 1T? I would not use it in a hub, but so far this is the best motor I have tried (V2) due to very low cogging.
3T is about 12Kv. I've considered having MXUS make us a 2T winding for our race bike, which would have a Kv of about 17 RPM per volt.
I can't even imagine the controller it would take to run a 1T winding. (I assume that would be for a mid drive???)
Yes, mid drive at 48V. Inductance should be still in manageable range. eRPM probably not too high as well?
smart and Tiny BMS solution
Visit my blog. Personal projects: Clean Peugeot conversion | Ultralight enduro
Any and all information, such as texts, specifications, drawings or other material that I post are to be used only as a reference for personal, non-commercial projects ONLY. Any republication for personal or commercial needs must be agreed on individually. Use of any information, that I post, for commercial purposes is strictly prohibited.

User avatar
madin88
10 MW
10 MW
Posts: 2496
Joined: May 27, 2013 2:02 am
Location: Austria

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by madin88 » Apr 20, 2016 9:48 am

circuit wrote: Yes, mid drive at 48V. Inductance should be still in manageable range. eRPM probably not too high as well?
1T should have about 36kV x 48V = 1728 rpm x 23 pole pairs = 40 000 ERPM.
I'm not sure, but i would call that too much (in view of iron losses).
- Votec V-FR frame / MXUS 3T / 17" Mitas MC11 / Adaptto Max-E / 20s12p 25R -> approved as L1e moped and fully road legal in EU :)
- Vector white / MXUS 4T / 24" Hookworms / Adaptto Max-E / 22s11p 25R
- KTM Hardtail Pedelec / eZee V2 6T / 27,5" / Kelly KBSX @ 1,5kW / Torque PAS / CA-V3 / 13s4p Sanyo GA in Shark case

User avatar
circuit
100 kW
100 kW
Posts: 1414
Joined: Mar 19, 2009 11:43 am
Location: EU
Contact:

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by circuit » Apr 20, 2016 11:09 am

madin88 wrote:
circuit wrote: Yes, mid drive at 48V. Inductance should be still in manageable range. eRPM probably not too high as well?
1T should have about 36kV x 48V = 1728 rpm x 23 pole pairs = 40 000 ERPM.
I'm not sure, but i would call that too much (in view of iron losses).
I somehow count only 32 poles = 16 pole pairs. So ~28k eRPM, which is 461 Hz and still low enough for nice waveform shape.
Not sure about core material though.
smart and Tiny BMS solution
Visit my blog. Personal projects: Clean Peugeot conversion | Ultralight enduro
Any and all information, such as texts, specifications, drawings or other material that I post are to be used only as a reference for personal, non-commercial projects ONLY. Any republication for personal or commercial needs must be agreed on individually. Use of any information, that I post, for commercial purposes is strictly prohibited.

LikeToRideMyBike
100 W
100 W
Posts: 149
Joined: Jan 09, 2016 9:00 pm

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by LikeToRideMyBike » May 13, 2016 8:29 pm

What torch arms should I use for the new 3k turbo? The recommended ones from ebike.ca are too small to fit over the axle... Here they are: http://www.ebikes.ca/shop/ebike-parts/t ... rm-v4.html

User avatar
teslanv
1 GW
1 GW
Posts: 3028
Joined: Nov 03, 2013 8:42 pm
Location: Bellevue, WA - USA
Contact:

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by teslanv » May 14, 2016 2:00 am

LikeToRideMyBike wrote:What torch arms should I use for the new 3k turbo? The recommended ones from ebike.ca are too small to fit over the axle... Here they are: http://www.ebikes.ca/shop/ebike-parts/t ... rm-v4.html
I will have some shortly.
I build custom ebikes.
http://www.westcoastelectrics.com
West Coast Electric Cycles
Bellevue, WA
USA

LikeToRideMyBike
100 W
100 W
Posts: 149
Joined: Jan 09, 2016 9:00 pm

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by LikeToRideMyBike » May 14, 2016 11:53 am

teslanv wrote:
LikeToRideMyBike wrote:What torch arms should I use for the new 3k turbo? The recommended ones from ebike.ca are too small to fit over the axle... Here they are: http://www.ebikes.ca/shop/ebike-parts/t ... rm-v4.html
I will have some shortly.
Great!

that1guy
10 mW
10 mW
Posts: 21
Joined: Jun 19, 2014 5:07 pm
Location: Mountain View, California, USA

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by that1guy » May 17, 2016 1:44 am

markz wrote:
Offroader wrote:
madin88 wrote: further it looks like mxus still don't get it how the middle hall sensor needs to be installed (one is twisted). a hall that is not installed correct will worsen eff and performance and it makes it impossible to fine-tune a modern sine wave controller.
i know thats mostly criticism from my side, but i also stayed in contact with MXUS about V3 and making mention many times of the quality issues, and than it's the same thing on the V3 -> the motor needs to be disassembled and cheched before installation.

Are these twisted hall sensors something you can fix? Is it worth fixing it?
I am currently replacing all of my hall sensors. Bought them from Lyen.com Honeywell SS41's I believe. My middle hall sensor was loose. But if you look at ebikes.ca they have a guide on how to do the proper job. Using epoxy on the halls. My stock hall sensors were fine, I just ripped them out accidentally, the wire broke on the halls too easily. Not to sure how I will bend mine. I got the V2 though.
I don't understand what's meant by "twisted" hall sensors? You mean they're place in the wrong order? As in the hall phase does not match the motor phase?

I'm also unclear why there's a 2nd set of hall wires. Would appreciate an explanation on that.

User avatar
Relanium
10 W
10 W
Posts: 99
Joined: Nov 25, 2012 12:38 pm
Location: Slovenia, EU

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by Relanium » May 17, 2016 3:15 am

The second set is a spare set. In case the first set od sensors fails, you just reconnect to a second set without opening up the motor :wink:

User avatar
madin88
10 MW
10 MW
Posts: 2496
Joined: May 27, 2013 2:02 am
Location: Austria

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by madin88 » May 17, 2016 1:49 pm

that1guy wrote: I don't understand what's meant by "twisted" hall sensors? You mean they're place in the wrong order? As in the hall phase does not match the motor phase?
when i was saying twisted, i meant that the Hall wasn't mounted properly.
the surface with the magnet sensitive part should face the magnets. the outer both halls have a guideline so they cannot be mounted improper, but the one in the middle has no. just take a look at pics from the stator than you'll understand what i mean.
- Votec V-FR frame / MXUS 3T / 17" Mitas MC11 / Adaptto Max-E / 20s12p 25R -> approved as L1e moped and fully road legal in EU :)
- Vector white / MXUS 4T / 24" Hookworms / Adaptto Max-E / 22s11p 25R
- KTM Hardtail Pedelec / eZee V2 6T / 27,5" / Kelly KBSX @ 1,5kW / Torque PAS / CA-V3 / 13s4p Sanyo GA in Shark case

that1guy
10 mW
10 mW
Posts: 21
Joined: Jun 19, 2014 5:07 pm
Location: Mountain View, California, USA

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by that1guy » May 20, 2016 1:49 am

madin88 wrote:
that1guy wrote: I don't understand what's meant by "twisted" hall sensors? You mean they're place in the wrong order? As in the hall phase does not match the motor phase?
when i was saying twisted, i meant that the Hall wasn't mounted properly.
the surface with the magnet sensitive part should face the magnets. the outer both halls have a guideline so they cannot be mounted improper, but the one in the middle has no. just take a look at pics from the stator than you'll understand what i mean.
Oh jeez so these hall installation problems are typical? Shouldn't be surprising i guess since i doubt there's little to no quality control and no "end of line" testing of motors. But that probably depends on each manufacturer. It seems a bit ironic that MXUS, who appears to be a higher quality mfg, is adding extra sets of halls to compensate for low quality manufacturing problems. Hmm.

that1guy
10 mW
10 mW
Posts: 21
Joined: Jun 19, 2014 5:07 pm
Location: Mountain View, California, USA

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by that1guy » May 20, 2016 1:51 am

madin88 wrote:
that1guy wrote: I don't understand what's meant by "twisted" hall sensors? You mean they're place in the wrong order? As in the hall phase does not match the motor phase?
when i was saying twisted, i meant that the Hall wasn't mounted properly.
the surface with the magnet sensitive part should face the magnets. the outer both halls have a guideline so they cannot be mounted improper, but the one in the middle has no. just take a look at pics from the stator than you'll understand what i mean.
It seems to make more sense to test each motor before shipped to catch this problem.

User avatar
madin88
10 MW
10 MW
Posts: 2496
Joined: May 27, 2013 2:02 am
Location: Austria

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by madin88 » May 20, 2016 7:24 am

that1guy wrote: It seems to make more sense to test each motor before shipped to catch this problem.
if the hall is glued with a twist into the stator, it doesn't mean that it don't work.
the problem rather is such motor prolly will have not so good efficiency because of the timing shift of that one hall.
- Votec V-FR frame / MXUS 3T / 17" Mitas MC11 / Adaptto Max-E / 20s12p 25R -> approved as L1e moped and fully road legal in EU :)
- Vector white / MXUS 4T / 24" Hookworms / Adaptto Max-E / 22s11p 25R
- KTM Hardtail Pedelec / eZee V2 6T / 27,5" / Kelly KBSX @ 1,5kW / Torque PAS / CA-V3 / 13s4p Sanyo GA in Shark case

bataanjr
10 mW
10 mW
Posts: 21
Joined: Dec 15, 2013 8:10 pm

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by bataanjr » May 20, 2016 6:41 pm

Mxus V1-4T-100v 50A 26x1.95 50 mph (front wheel rises 0 mph to 30 mph 31MPH+ no)

User avatar
brumbrum
100 kW
100 kW
Posts: 1020
Joined: Oct 30, 2010 3:29 pm
Location: Wales U.K

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by brumbrum » May 28, 2016 2:20 pm

Please can someone confirm how many pole pairs there are on the Mxus? Further up the thread there is mention of 23 and 16, which one is correct?

User avatar
Offroader
10 MW
10 MW
Posts: 2014
Joined: Sep 08, 2013 9:03 pm
Location: USA

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by Offroader » May 28, 2016 2:43 pm

brumbrum wrote:Please can someone confirm how many pole pairs there are on the Mxus? Further up the thread there is mention of 23 and 16, which one is correct?
It has 46 magnets so 23 pole pairs.

Qs205 is 16 pole pairs.

User avatar
brumbrum
100 kW
100 kW
Posts: 1020
Joined: Oct 30, 2010 3:29 pm
Location: Wales U.K

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by brumbrum » May 28, 2016 4:46 pm

Offroader wrote:
brumbrum wrote:Please can someone confirm how many pole pairs there are on the Mxus? Further up the thread there is mention of 23 and 16, which one is correct?
It has 46 magnets so 23 pole pairs.

Qs205 is 16 pole pairs.

Thanks mate. :D

markz
100 GW
100 GW
Posts: 5011
Joined: Jan 09, 2014 11:38 pm
Location: Alberta Canada

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by markz » Jun 02, 2016 2:26 pm

teslanv wrote:
circuit wrote:Is it possible to custom-wind it for 1T? I would not use it in a hub, but so far this is the best motor I have tried (V2) due to very low cogging.
3T is about 12Kv. I've considered having MXUS make us a 2T winding for our race bike, which would have a Kv of about 17 RPM per volt.
I can't even imagine the controller it would take to run a 1T winding. (I assume that would be for a mid drive???)
Make a 1 or 2T yourself, not sure how you'd size the wire for that. I assume its a thicker (lower guage) wire. Might take you hours to do, if you got small hands like they do in China.

User avatar
circuit
100 kW
100 kW
Posts: 1414
Joined: Mar 19, 2009 11:43 am
Location: EU
Contact:

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by circuit » Jun 02, 2016 3:54 pm

I just made a 1.5T test winding on mxus v1. Does 1200rpm at 53V. Takes around 90 watts no-load.

Sent from my MI 4i using Tapatalk
smart and Tiny BMS solution
Visit my blog. Personal projects: Clean Peugeot conversion | Ultralight enduro
Any and all information, such as texts, specifications, drawings or other material that I post are to be used only as a reference for personal, non-commercial projects ONLY. Any republication for personal or commercial needs must be agreed on individually. Use of any information, that I post, for commercial purposes is strictly prohibited.

markz
100 GW
100 GW
Posts: 5011
Joined: Jan 09, 2014 11:38 pm
Location: Alberta Canada

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by markz » Jun 02, 2016 4:23 pm

circuit wrote:I just made a 1.5T test winding on mxus v1. Does 1200rpm at 53V. Takes around 90 watts no-load.

Sent from my MI 4i using Tapatalk
How long did it take you, and what size of motor winding wire did you use?
What size of controller? 18FET?

User avatar
circuit
100 kW
100 kW
Posts: 1414
Joined: Mar 19, 2009 11:43 am
Location: EU
Contact:

Re: MXUS 3K Turbo (V3) 45mm Direct Drive Hub Motor

Post by circuit » Jun 03, 2016 12:24 am

It is a "test" winding, I used 2.5mm² electrical cable.
It took around 1.5 hours.

Controller under test - Vedder's VESC.
smart and Tiny BMS solution
Visit my blog. Personal projects: Clean Peugeot conversion | Ultralight enduro
Any and all information, such as texts, specifications, drawings or other material that I post are to be used only as a reference for personal, non-commercial projects ONLY. Any republication for personal or commercial needs must be agreed on individually. Use of any information, that I post, for commercial purposes is strictly prohibited.

Post Reply