MXUS 3000 Hub Motor - V1 V2 V3

[parabellum]

Best to wind it into 6 phases wouldnt it?
Then its the placement of the extra 3 hall sensors.

May be possible, if you let 3 toots naked, but it is 6% less cooper fill from start on.

 

[macribs]

Rewinding the motor to a 2.5T from a 4T.

That would make for a great video/timelaps combo

It would still be a long video unless watching at 200X speed.

Hehe you don't shoot 25 frames a second for timelaps. And editing will also help.

 

[korpin]

have not been here in awhile wanted to say mu MXUS V3 is working great and can climb just about any road I throw at it although it will get hot on extreme climbing and I still have to get off and push on steep loose soil.....but it can do things my 4065 could never do like climb a steep hill from dead stop

as a comparison,my old setup was 110 volt topping out at 120 and running 25 battery amps lyen control phasor 93 pounds individual cell pack the 4065 had upgraded phase wires

my MSUX is 86 nominal topping out at 96 running 35 battery amps adappto control 105 pounds thereabouts foil packs battery

SO THEY ARE PRETTY CLOSE...but the MXUS V3 is better in all aspects at a cheaper price...also my V2 was pretty much an electric heater even on flat ground

 

[Rix]

[="markz"]Rewinding the motor to a 2.5T from a 4T.[

That would make for a great video/timelaps combo
It would still be a long video unless watching at 200X speed.[


Hehe you don't shoot 25 frames a second for timelaps. And editing will also help.

True that amico mio.

 

[redline2097]

I would love to build trail runner, we have lot of big steep hills here. So which one is better and why:

3T MXUS with 45V and 100A
or
5T MXUS with 75V and 60A

running with 17" moto rim.

Speed and watts should be comparable.

 

[redline2097]

So there is not much difference performance/effiency wise. But how about in general, which one is more sensible solution regarding of other components of bike?
Oh and is this okayish reasonably priced controller to pair up with Mxus: http://kellycontroller.com/kls7230s24v-72v300asinusoidal-brushless-motor-controller-p-1343.html ?

 

[burner77]

I have tried also your settings but with 20° Grade. A = 45V 100A 4503, B = 75V 60A 4505
The overheating with full throttle A = 10min, B = 4min

 

[redline2097]

The overheating with full throttle A = 10min, B = 4min

Your screenshot was focused on max speed for system A. Move then line to the intersect of red B line and solid black load line. It will be much better.

@redline Note the differences, especially in acceleration. The rest would depend on your other desired specs (top speed, battery, etc.).

I do not need top speed over 30mph, so 5t would be optimal choice with 18s configuration. At least acceleration is very much higher.

 

[redline2097]

What's the max phase amps that 5t version can be ridden with 18s lipos?

 

[litespeed]

From the first post.....

Tom

 

[Merlin]

dont know if that was the question but is this chart also for the v3? because his post is from 2014.

you can run as much phase amps as your wires and motor can handle without overheating or melting wires.
but this has alot dependencies....cold weather, bigger phase wires, cooling holes in the sideplate, ferrofluid using or not etc....

you should ask the community your real question

3T 17" or 4T 19" motor

 

[minde28383]

What's the max phase amps that 5t version can be ridden with 18s lipos?

Can be ridden is quite broad thing. Some folks set it 200 phase amps. But i think its near the limit it can withstand even for short burths. When you overpower you should monitor it or it will melt in seconds. If you run it stock than maybe up to 70battt and maybe 110 phase amps. To remind you that it has 4mm phase wires which is good up to 60amps. Want more amps than should upgrade phase wires and if want put even more than cooling is needed. Of course you can run a lot amps on 4mm wires but they will heat.

If you dont want modify mxus for it to be more power capable than go for qs 205 v3. Its almost double the price and plus 4kg and can withstand up to 350 phase amps, espeicially higher kv versions and it has much more accelaration from stand still and overall. Qs 205 better motor not just because it has more mass, more copper but also it passed better quality inspection during manufacturing. Mxus to be considreded only if you want to save money and almost 4 kgs and plan to modify phase wires or will stick running it with moderate power.

 

[Samd]

Thats not right. The qs205 has only a ten percent wider stator. The extra copper fill takes maybe another 14 percent.

My mxus v2 barely gets warm at 22s 70a with proper field orientation.

Quality inspection is one thing. But good axle design is another. QS isn't a match for some of the other large hub makers like the big 9c motors. They just market harder.


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[redline2097]

From the first post.....

Tom

Is that the same for 5T v3 turbo model, which has 10AWG phase wires?

 

[markz]

Thats not right. The qs205 has only a ten percent wider stator. The extra copper fill takes maybe another 14 percent.

My mxus v2 barely gets warm at 22s 70a with proper field orientation.

Quality inspection is one thing. But good axle design is another. QS isn't a match for some of the other large hub makers like the big 9c motors. They just market harder.


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I did not realize that 9Continent made bigger motors then their classic one. I guess I always thought of 9C as a motor and not a company, which it is.....a company. QS does make bigger motors, beyond that I dunno what they are like. The 205 was always in my mind slightly better (more copper) then our famed MXUS 3kW motor.

 

[redline2097]

Are the 4T and 5T really this close in acceleration between similar setups?

 

[litespeed]

From the first post.....

Tom

Is that the same for 5T v3 turbo model, which has 10AWG phase wires?

I honestly don't know that.

Tom

 

[litespeed]

I've had a few motors including a Mxus and it doesn't compare in anyway to the QS205 in my opinion.`

I'm not saying anything bad about the MXUS just that the QS205 motor is easily 50% better as far as running it hard. I can pump 7 to 10KW for 20 mins and then go back to 3 to 5 KW and let the motor cool down. That was before Hubsinks.....now I can pump 9 to 12 KW and cool down running under 7kw......that's off and on of course.

On my MXUS after 20 mins of 5 to 7 KW it was parked for a half hour to cool down.

Tom

 

[Rix]

I've had a few motors including a Mxus and it doesn't compare in anyway to the QS205 in my opinion.`

I'm not saying anything bad about the MXUS just that the QS205 motor is easily 50% better as far as running it hard. I can pump 7 to 10KW for 20 mins and then go back to 3 to 5 KW and let the motor cool down. That was before Hubsinks.....now I can pump 9 to 12 KW and cool down running under 7kw......that's off and on of course.

On my MXUS after 20 mins of 5 to 7 KW it was parked for a half hour to cool down.

Tom

I don't have any experience with the QS205, but I have a butt ton of experience with the 5403, 5404, and 5405,
all I can say is, the juice one can throw at those motors isn't worth the weight penalty of 30 pounds vs 20 pounds for the MXUS V2 4T.
I think the thing to consider is the age old compromise of putting up with heavy weight hub motor and big power vs light weight and not as much power.
Yah, the Cromotor and QS205 are king and better than the 54xx motors because they give you more performance with same phase amps/volts input over the 54xx, but for the compromise
of a lighter motor that still gives decent power, the MXUS and TC40xx are hard to beat.

 

[Samd]

Recent trials with the hubsink and mxus are yielding 16kw before sketch sheared the magnets off two of my motors. We are in for interesting times. Whilst saturation is important some riding conditions mean longer stretches of needing lighter weight peppered with short bursts of power (its not easy to hold 15kw for long).
I am dying to see what my 35mm v2 motors can take with ferro and hubsink.


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[minde28383]

Im too interested what 35mm can do with colling. Will be waiting testing results.

 

[sketchism]

Recent trials with the hubsink and mxus are yielding 16kw before sketch sheared the magnets off two of my motors. We are in for interesting times.

haha to be fair they had already had a hard life, and when they let go it wasn't exactly rolling the power on cruising it was hard rock/cliff climbing and enduro style stuff on Bozi's wild terrain. i'm still using them for testing (thrashing) after a little bit of glue and they're taking 92V 180A no problem now, - 16.5+ input

I have the QSV3 on some bikes and the MXUS on others, i think they are far apart enough in weight that in a perfect world i would suggest everyone tries both, i know thats not always viable but if you were to draw the line between them i would say , a MXUS with FF & Hubsinks is unbeatable power to weight wise, which is invaluable if you're doing off road or performance riding, hard corners, hard braking & jumps etc etc thats a noticeable difference in rotational and unsprung mass, but if you're just pointing and shooting you probably wouldn't mind the weight penalty to have a little more torque on tap or you have a particularly heavy build already.

Im too interested what 35mm can do with colling. Will be waiting testing results.

I third that sentiment haha i really think the sinks will shine when installed on the lightest possible high performance motors for a given situation

 

[markz]

I thought the price of the QS motor was kind of high.

I was trying to understand what you were meaning by Hubsinks, since a few times it was capitalized, thought it was a member of ES. But you are just putting mini heat sinks on the hub.

 

[sketchism]

I thought the price of the QS motor was kind of high.

I was trying to understand what you were meaning by Hubsinks, since a few times it was capitalized, thought it was a member of ES. But you are just putting mini heat sinks on the hub.

haha damn here i was thinking i had been already been pretty descriptive with the name :lol:

 

[Samd]

You still need the "goes like stink" slogan Sketchy.

My 35mm proto hub arrives Weds. And my unemployment starts friday. Time to test


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