MXUS 3000 Hub Motor - V1 V2 V3

[macribs]

Maybe Zombiess can help out with cromotor to dyno if has motors in stock?
It would be totally awesome to finally see cromotor and mxus 3K neck to neck. And that dyno would make it much easier for people to do calculations in the great simulator and also to make the right decisions before purchase.

If zombiess can't contribute maybe we can start a collect to get together the money needed for a cromtor shipped to testing?

If it would be a recent version V3 or V4 I would be welling to buy one and get it shipped to Justin before to get it shipped to me.

Doc

AFAIK there is not yet a v4 of cromtor, and contradicting popular beliefs it might not be one in the future I've been told.
But v3 is readily available from QS motors already and Cro v3 from Croatia next month IIRC.

Because they will have one motor for keep after the testing I think the best option would be if we all chipped in a few bucks to raise enough money for 1 motor, then you can pay for the other and have that one returned to you after testing. Just for the sake of having the simulator more complete I would be willing to donate say 25-35 bucks. Lets see how many are willing and able to raise some cash to get a cro v3 for testing?

[strike]Maybe even ebikes.ca chips in a few $? Cos it will make their simulator more complete.[/strike]

 

[teslanv]

Grin Tech is providing all the labor to dyno test and model the motors for the simulator. I woudn't think it right to ask them to chip in for the motor as well. I am quite thankful they are willing to test and list motors they don't sell.

 

[macribs]

Yes sir you are correct. Didn't think of that.
Now lets see how many are willing to chip in to get a real dyno test for cro v3 so we all can see what a the true differences between cro and mxus 3K.

 

[teslanv]

To give validity to Neptronix' enthusiasm for the Leaf 35mm motor, I would suggest buying one of those as well.

 

[Doctorbass]

You are right guys... :lol: I forgot about that.. Justin would make alot of work to test and document these so asking him to return them to us would just be unacceptable.

If someone would be welling to start a donation action i would be welling to contribute for let say 40$ for buying a cromotor and get it tested.

So i'm in for 50$ for a cromotor sent to Justin. Who's next? :wink:

Doc

 

[macribs]

I would like to suggest that you host the donation doc.
You are a long term member which people know and trust. We could use paypal to make donations. Or any other arrangement you prefer. I am in for 35 $ so that makes 85 bucks already.

 

[madin88]

i also would be in for a donation. to know the differences is me worth some money.

now, will it be for a QS V2 (Cromotor) or QS V3? who is for both?

 

[macribs]

We should even see if we can raise enough to get the Revolt 120 tested.
To have some serious data on the Revolt I would even donate more.
I don't think there are any RC motors in the simulator, would be cool to have the Revolt 120 there. Small, low Kv and reasonable priced.

 

[Rix]

You are right guys... :lol: I forgot about that.. Justin would make alot of work to test and document these so asking him to return them to us would just be unacceptable.

If someone would be welling to start a donation action i would be welling to contribute for let say 40$ for buying a cromotor and get it tested.

So i'm in for 50$ for a cromotor sent to Justin. Who's next? :wink:

Doc

I am in for 40 as well, we need a point of contact to send payment too. I will use Paypal and nominate Docbass. Hes been here longer than most and probably has one of the best trust reps around.

 

[macribs]

So far we have these motors suggested up for testing

• Cromotor v3
• Cromotor v2
• Leaf 1.5kw
• Revolt 120

We are already passed 100 $.

To be clear according to ebikes.ca and their new test regime they need only one of each motor. Not 2 motors like before. Motors are for keep. Mxus motors are already completed. Should we maybe do a new thread for this? Maybe with a poll to vote for motors and people can reply in the thread to the amount of money they will put down. We should aim to make a specific topic of this so that as many es members as possible can see this and then decide if they like to participate. What do you think?

Mm seems we can't start a poll. Maybe admin can make poll?

 

[macribs]

So donate a QS motor, 260bucks of worth, will be cheaper than a cro =)

Which one of QS motors do you have in mind?

 

[Allex]

QS 3000W 205 (50H) E-bike hub motor
extra/V3 type

Price is around US$279.8
plus shipping US$211


We can skip cro 2 as it is the same motor as v3
Actually we can probably skip Cro as cro and qs205 should be the same motor.

 

[macribs]

QS 3000W 205 (50H) E-bike hub motor
extra/V3 type

Price is around US$279.8
plus shipping US$211


We can skip cro 2 as it is the same motor as v3
Actually we can probably skip Cro as cro and qs205 should be the same motor.

And this motor from QS is as strong as cro? I thought the 8kw motor from QS was equal cro, you are sure Allex?
If that is the case it makes things easier and cheaper.

I for sure would like to throw in Revolt 120 in the mix. Cos of its high specs it would be awesome to see it tested.
And it is almost as cheap as the QS 205, I think just a tad over 300 IIRC.

 

[madin88]

don't mix up things here:

QS V2 export type should be identical to Cromotor V2 and V3
QS V3 extra type is newer model

 

[korpin]

What tires are available to use with the 19" rim? Sorry new ground again...

I LIKE THE SHINKO 241's they are knobby for off road but smooth on pavement 19" rims total diameter comes to about 25.5"

 

[teslanv]

^^^ That looks like a great "Dual Sport" tire there.

 

[korpin]

this may be a dumb question already covered but the first post on this thread gives specs as 135mm dropout...when I go to Kinaye motorsports it says 142mm dropouts....???

 

[teslanv]

this may be a dumb question already covered but the first post on this thread gives specs as 135mm dropout...when I go to Kinaye motorsports it says 142mm dropouts....???

The motors/axles I have measured are 138mm between the axle flats, but if you use the Anti-rotational washers inside the bike's drop-outs, it will require 142mm. However many 135mm wide drop-out can be opened up to 142mm well enough for these motors to fit. SamD installs these motors into 135mm Bikes regularly.

 

[korpin]

The motors/axles I have measured are 138mm between the axle flats, but if you use the Anti-rotational washers inside the bike's drop-outs, it will require 142mm. However many 135mm wide drop-out can be opened up to 142mm well enough for these motors to fit. SamD installs these motors into 135mm Bikes regularly.

thanks I saw 138mm on a drawing...I have 150mm drop outs so fitting this motor is not the issue was wondering how many freewheels I could get in?..currently have a 4065 with 9 speed freewheel..thinking maybe have to go to seven?...problem is not sure if 7 freewheels have the smaller sprocket that the 9 have

my 4065 works well and gives great range but gets hot climbing was hoping 4T MXUS3000 would give me cooler climbing with good speed on flats

 

[teslanv]

The motors/axles I have measured are 138mm between the axle flats, but if you use the Anti-rotational washers inside the bike's drop-outs, it will require 142mm. However many 135mm wide drop-out can be opened up to 142mm well enough for these motors to fit. SamD installs these motors into 135mm Bikes regularly.

thanks I saw 138mm on a drawing...I have 150mm drop outs so fitting this motor is not the issue was wondering how many freewheels I could get in?..currently have a 4065 with 9 speed freewheel..thinking maybe have to go to seven?...problem is not sure if 7 freewheels have the smaller sprocket that the 9 have

my 4065 works well and gives great range but gets hot climbing was hoping 4T MXUS3000 would give me cooler climbing with good speed on flats

I think you will find you just need really High Gearing, and having more different sized rear gears will not provide much benefit. If you can find an old shimano megarange Freehweel, those have 11T Small sprockets. - And as big of chainring on the front as you can fit.

If you are building a "pedal assist" type of set-up, this motor is a bit overkill. It's more of an "electric motorcycle" motor.

 

[macribs]

@korpin maybe you could rip off 2 largest sprockets off your 9 speed?

 

[korpin]

I think you will find you just need really High Gearing, and having more different sized rear gears will not provide much benefit. If you can find an old shimano megarange Freehweel, those have 11T Small sprockets. - And as big of chainring on the front as you can fit.

If you are building a "pedal assist" type of set-up, this motor is a bit overkill. It's more of an "electric motorcycle" motor.

well I got a schlumph 30/75 mountain drive up front

 

[korpin]

@korpin maybe you could rip off 2 largest sprockets off your 9 speed?

did not even know you could do that

 

[korpin]

has anybody tried Linukas water cooled version of this motor with custom axles/wiring? (as shown on page 10 of this thread)

 

[korpin]

Take the supposedly better hill climbing 5x12 motor run at 100V and 50A peak current. With the same size wheel running the 4x15 to get to the same rpm, torque, efficiency, etc simply run it at 80V and 62.5A peak current (and the same proportionately higher phase current limit). The thicker shorter copper of the speedier wind can handle the proportionately higher current. 5000W peak into each motor with identical results.

John

so since I AM on a 100 volt system it means I can use less amps on a 5x12?....and with AC motors I know higher voltage/less amps is better for the wiring (less heat) not sure if it is the same for DC motors?...or does it simply mean the 4x15 will handle more amps better?

also what values will I need to change on my CA and controller software? currently using 100 phase current and 45 rated current (usually keep CA at 25 my 4065 does not really increase speed much from 25 to 45 setting maybe a mile or two difference 47-49 mph)

23 poles?

r shunt value change?

sorry for all the questions still learning I AM going to buy one of your motors for sure and have HPC Dyno it to compare against crown! (they are right down the street from me)