MXUS GDR19-FAT - Most powerful geared motor?

[OkinawaJapan]

Posting in the Bafang forum as there is no MXUS forum, and this motor may be relevant to users of the Bafang geared hubs.

This is somewhat of a new motor, and limited information is available in english. Here is some information that may help. XF19R XF19R-FAT GDR19 FAT GDR19-FAT

2 versions of the motor exist, a 750w-1000 rated motor and 1200w-1500 rated motor. This is the highest rating of any geared hub motor, and also has the highest advertised maximum torque of 125nm as well as the highest rated voltage (48-60v rated) and the largest diameter core, and therefore appears to be the most powerful geared hub motor available.

I was told by Mxus import/export on Alibaba, the difference between the 2 motors is the 750w has 20H magnets, and 1200w has 25H magnets. This is the only difference I have been able to identify so far between the two. Not sure if copper fill is any different but would imagine it might be. However see the picture below, the copper fill looks quite nice (a significant amount of copper is stuffed in these larger diameter motors). See the photo below, the motor has a larger stator/rotor than previous generation geared motors, allowing more copper and a greater amount of torque due to leverage ratio.

I was told it is available in 4T and 5T configurations, with the 5T having 400rpm unloaded at 48v, and 4T having 500rpm unloaded at 48v.

Take a look at the clutch picture- you will notice it has 2 notches, where 2 feather/parallel/magnet keys can fit. The feather key slot is much larger than previous generation geared motors. This is perhaps why the motor can handle more torque. When running high torque on prior models the feather key would shear off, this model has a much stronger (longer) feather key, as well as feather keys on both sides, and appears it can withstand significantly more torque than previous motors. The gears appear to still be nylon, but of course can be upgraded.

Also attached is a hard to find dimensions diagram of the motor

What I like- Appears to have more copper, larger diameter, stronger axle/clutch, in comparison to previous motors.

Regarding purchasing- Very limited information is available on this for english speaking countries and only 1 or 2 sellers have this motor on Aliexpress, the cost is typically $400-450 or more. I ordered from Alibaba, and was able to acquire the motor much cheaper. Not only was it cheaper, I could choose between axle widths (175mm/190mm) and the turn count (4T/5T) as well as the wattage (750/1200). Lastly and most importantly the factory allows customization of the motor cable, I was able to have a factory installed L1019 MALE connector rather than an inferior Z916 or other. Alibaba also seemed more knowledgeable than any of the other limited sellers. Changzhou Mxus Imp.&Exp. Co., Ltd. on Alibaba if it helps anyone.

Hope this helps anyone that cannot find information about this motor. I will be testing this motor and add more information when I can in 30-60 days, comparing it against the next closest competitor the Bafang G062.

Great write up.
I think this is the link to the same one you bought? https://www.alibaba.com/product-detail/Electric-Gear-Rear-Drive-Snowmobile-48v_1601379396205.html

I also found another model on that reseller's alibaba webstore. Model GDR19-SR. Which is listed as a 1500w motor. Thoughts in comparison? Says it's a bit heavier.

Mxus High Power 48v 1500w Electric Bicycle Snow Fat Hub Motor - Buy Bicycle Electric Motor 1200w Hub Motor e-bike Motor Product on Alibaba.com

Mxus High Power 48v 1500w Electric Bicycle Snow Fat Hub Motor - Buy Bicycle Electric Motor 1200w Hub Motor e-bike Motor Product on Alibaba.com

www.alibaba.com

The wiring issues you saw concern me though. I'm not ready to rewire brand new hubs upon arrival. Even if better than a bafang. If they have things sorted out by now I'd be more likely to try one.

But if it's not easy to get working with a Grin Baserunner/Phaserunner L10 easily, then for me I'll probably go with a Bafang for now.

I don't see it in the Grin list even when choosing from all motors.

But I really like all the upgrades they've added to this motor. It has potential to outdo Bafang finally it seems. It would just need to catch on and get the wiring plug and play for the L1019 pinout if it still isn't already.

By the way guys. How are your motors doing since your last updates? @David Dye @Boosted

 

[Boosted]

Great write up.
I think this is the link to the same one you bought? https://www.alibaba.com/product-detail/Electric-Gear-Rear-Drive-Snowmobile-48v_1601379396205.html

I also found another model on that reseller's alibaba webstore. Model GDR19-SR. Which is listed as a 1500w motor. Thoughts in comparison? Says it's a bit heavier.

Mxus High Power 48v 1500w Electric Bicycle Snow Fat Hub Motor - Buy Bicycle Electric Motor 1200w Hub Motor e-bike Motor Product on Alibaba.com

Mxus High Power 48v 1500w Electric Bicycle Snow Fat Hub Motor - Buy Bicycle Electric Motor 1200w Hub Motor e-bike Motor Product on Alibaba.com

www.alibaba.com

The wiring issues you saw concern me though. I'm not ready to rewire brand new hubs upon arrival. Even if better than a bafang. If they have things sorted out by now I'd be more likely to try one.

But if it's not easy to get working with a Grin Baserunner/Phaserunner L10 easily, then for me I'll probably go with a Bafang for now.

I don't see it in the Grin list even when choosing from all motors.

View attachment 198291

But I really like all the upgrades they've added to this motor. It has potential to outdo Bafang finally it seems. It would just need to catch on and get the wiring plug and play for the L1019 pinout if it still isn't already.

By the way guys. How are your motors doing since your last updates? @David Dye @Boosted

Yes I believe thats the same seller that I purchased from

I think the 12000w and 1500w are the same motor. Ive seen this thing listed both ways. Also its rated 48-60v so that could be the reasoning. But not 100% sure.

Phase wires. When I ordered, I asked for an L1019 connector. This is POSSIBLY the issue of why it came with messed up wiring (because I asked for a custom connector). They sent the phase wire on the motor, then an additional cable as normal (a L1019 to ring terminal extension cable). If I remember correct the overall wiring using both cables worked correctly, however ONLY when using the extension cable. If you use just the motor cable (without the extension cable) it was entirely backwards. The L1019 itself seemed to be the issue. In other words I believe it was wired "correct" but the L1019 was ass backwards, and only worked when using THEIR L1019 adapter cable and ring terminals. So if you were not using their extension cable, it was non functional. Perhaps it had funky wiring because its the only item they had in stock at the same. Or perhaps it had to do with cost, and that was a lower cost cable. Or who knows the reasoning for that nonsense. The L1019 I received from them was about the same thickness as the G062, 2.5-3mm2. They "might" be able to factory OEM a 4mm2 if you ask. However this motor (M14 axle) is able to easily fit a 4MM2 L1019- so its rather easy to rewire this motor, and add a temp sensor which is what I did.

Yes its live Verson 2 of the G062. Larger stator diameter. More powerful. Stronger Gears. M14 axle. Stronger Clutch. And the parallel keys are 2-3x stronger so it can handle much more torque and perhaps regen with a welded clutch. Very much more robust. It just requires an FOC controller or special Trapezoidal wave controller to work properly. The new HENTACH motor looks very promising as well. JTK is possibly going to be testing this motor eventually? I expect to hear a lot more about the HENTACH motors coming soon as well.

Also worth noting theres a new QS159.8 motor thats similar. Its a fat motor, in a similar weight class, but is a DD motor. M14 axle. Capable of high torque and power. A great solution for mid power setups, no gears to worry about, and regen capable. I have one and I do like it.

So my G062 has been replaced by the MXUS and QS159.8 for the time being, and im keeping an eye on the Hentach. Currently running the QS159.8 with a 4MM2 L1019.

 

[David Dye]

But if it's not easy to get working with a Grin Baserunner/Phaserunner L10 easily, then for me I'll probably go with a Bafang for now.

I don't see it in the Grin list even when choosing from all motors.

My motor came in a complete bike with an oddball connector, so I just wired it up with an MT60 for the phase wires and JSTs for the signal wires, nothing to it. I did crack the motor open to identify the wires, though it's not strictly necessary.

The great thing about the PR is that you really don't have to worry about phase wiring - it will auto detect and sort it out for you. The only hard part of getting the PR working for my setup was the Domino throttle causing a brake error every time it hit full throttle. This isn't covered in the documentation at all, so I reached out to Grin and they had me adjust one of the brake parameters manually. It only took a few seconds and we were good to go.

If you want plug and play, just buy a motor and controller from Grin and they'll get it all set up.

 

[OkinawaJapan]

Yes I believe thats the same seller that I purchased from

I think the 12000w and 1500w are the same motor. Ive seen this thing listed both ways. Also its rated 48-60v so that could be the reasoning. But not 100% sure.

Phase wires. When I ordered, I asked for an L1019 connector. This is POSSIBLY the issue of why it came with messed up wiring (because I asked for a custom connector). They sent the phase wire on the motor, then an additional cable as normal (a L1019 to ring terminal extension cable). If I remember correct the overall wiring using both cables worked correctly, however ONLY when using the extension cable. If you use just the motor cable (without the extension cable) it was entirely backwards. The L1019 itself seemed to be the issue. In other words I believe it was wired "correct" but the L1019 was ass backwards, and only worked when using THEIR L1019 adapter cable and ring terminals. So if you were not using their extension cable, it was non functional. Perhaps it had funky wiring because its the only item they had in stock at the same. Or perhaps it had to do with cost, and that was a lower cost cable. Or who knows the reasoning for that nonsense. The L1019 I received from them was about the same thickness as the G062, 2.5-3mm2. They "might" be able to factory OEM a 4mm2 if you ask. However this motor (M14 axle) is able to easily fit a 4MM2 L1019- so its rather easy to rewire this motor, and add a temp sensor which is what I did.

Yes its live Verson 2 of the G062. Larger stator diameter. More powerful. Stronger Gears. M14 axle. Stronger Clutch. And the parallel keys are 2-3x stronger so it can handle much more torque and perhaps regen with a welded clutch. Very much more robust. It just requires an FOC controller or special Trapezoidal wave controller to work properly. The new HENTACH motor looks very promising as well. JTK is possibly going to be testing this motor eventually? I expect to hear a lot more about the HENTACH motors coming soon as well.

Also worth noting theres a new QS159.8 motor thats similar. Its a fat motor, in a similar weight class, but is a DD motor. M14 axle. Capable of high torque and power. A great solution for mid power setups, no gears to worry about, and regen capable. I have one and I do like it.

So my G062 has been replaced by the MXUS and QS159.8 for the time being, and im keeping an eye on the Hentach. Currently running the QS159.8 with a 4MM2 L1019.

Great post! Thank you.

Sounds like nowadays the way to go is.
1. G063 if one wants to stay with bafang as it already has upgraded axle size and connector plus is a good price and becoming their new standard.
2. The MXUS GDR19-FAT if one wants a stronger version of the bafang with already upgraded gears and overall more stout. Just need to sort out the programming in the phaserunner software to determine workable settings.
3. The QS159.8 as it's already a fat DD. Just need to find a working buy link and see what the price is. Since this might be the only other fat DD on the market other than the $900 Grin Max45, this is VERY interesting to hear.
4. The Hentach. Need to find the model info and a source with pricing.

That QS159.8 sounds very very interesting if its a DD motor. Trying to find an order link now. Thanks for the heads up on these. I'd not heard of them at all yet.

I did find this spec page on the QS: https://www.siaecosys.com/show/?id=249 Says it already has the temperature probe installed by default too. And says it supports regen.

No sources yet. Two links I found on aliexpress say they're no longer available.

Found a source here: https://www.alibaba.com/product-detail/QS-MOTOR-E-bike-Motor-159_1601212615469.html Seems they've sold 5 so far. But they call it a 'toothed brushless hub motor'. No mention of it being DD.
I asked them in their chat window and their AI answered back with this. lol.

Pics also seem to show the older z910 connector as default? What connector came on yours? Would love to see internal pics if you took any when you had it open.

 

[Boosted]

Great post! Thank you.

Sounds like nowadays the way to go is.
1. G063 if one wants to stay with bafang as it already has upgraded axle size and connector plus is a good price and becoming their new standard.
2. The MXUS GDR19-FAT if one wants a stronger version of the bafang with already upgraded gears and overall more stout. Just need to sort out the programming in the phaserunner software to determine workable settings.
3. The QS159.8 as it's already a fat DD. Just need to find a working buy link and see what the price is. Since this might be the only other fat DD on the market other than the $900 Grin Max45, this is VERY interesting to hear.
4. The Hentach. Need to find the model info and a source with pricing.

That QS159.8 sounds very very interesting if its a DD motor. Trying to find an order link now. Thanks for the heads up on these. I'd not heard of them at all yet.

I did find this spec page on the QS: https://www.siaecosys.com/show/?id=249 Says it already has the temperature probe installed by default too. And says it supports regen.

No sources yet. Two links I found on aliexpress say they're no longer available.

Found a source here: https://www.alibaba.com/product-detail/QS-MOTOR-E-bike-Motor-159_1601212615469.html Seems they've sold 5 so far. But they call it a 'toothed brushless hub motor'. No mention of it being DD.
I asked them in their chat window and their AI answered back with this. lol.

View attachment 198302

Pics also seem to show the older z910 connector as default? What connector came on yours? Would love to see internal pics if you took any when you had it open.

1. Yeah I dont know much about the G063's I havent had one. When I saw pictures the copper fill didnt look as good as the G062's but who knows. The G063 is usually a lower turn motor than the G062 from what I have seen. And again the L1121 seems to be less compatible with controllers last I looked, and was NOT available in larger 4MM2 phase wires to upgrade the phase wires if needed last time I checked, as the downsides.
2. Yeah the MXUS GDR19 is a beefed up version of G062. If you are trying to run high power numbers you are probably way better off with this unit. Its also probably better if you want to weld the clutch and run regen, as the keys are literally like 3x stronger as well, theres 2 keys instead of one and each key is twice as large. It does (basically) require a FOC controller though. It was the most powerful geared motor I was aware of, until the Hentach came out.
3. QS 159.8 is a great motor. Yeah its gonna be less powerful than the GRIN motor I think, its going to be smaller (diameter) and possibly slightly less weight. I got mine off alibaba pre tariff for $150 bucks. Its a 1000w motor but QS typically under-rates thier motors, and with a higher voltage and statorade its like a 1500-2000w continuous motor. Its the lowest power motor QS makes, and its fat. Its a nice little unit. Fits 4mm2 1019 phase wires no problem. Can run regen with it right out of the box, no gears/clutch/keys to worry about. A great option, no issues with mine so far.
4. I still dont know much about the Hentach, and theres not a ton of information about it. Its the new, most powerful geared hub motor, as far as I know. But it has issues of its own such as "thru axle", hard to purchase, etc. May be a year or two until these become more mainstream who knows.

Is there a specific reason you want a geared motor? Like if you are climbing steep hills or something that would totally make sense. But otherwise the DD QS159.8 may be a great option worth considering. Its almost the same weight, only 1kg or so heavier than a G062, and more powerful, and regen ready.

 

[OkinawaJapan]

1. Yeah I dont know much about the G063's I havent had one. When I saw pictures the copper fill didnt look as good as the G062's but who knows. The G063 is usually a lower turn motor than the G062 from what I have seen. And again the L1121 seems to be less compatible with controllers last I looked, and was NOT available in larger 4MM2 phase wires to upgrade the phase wires if needed last time I checked, as the downsides.
2. Yeah the MXUS GDR19 is a beefed up version of G062. If you are trying to run high power numbers you are probably way better off with this unit. Its also probably better if you want to weld the clutch and run regen, as the keys are literally like 3x stronger as well, theres 2 keys instead of one and each key is twice as large. It does (basically) require a FOC controller though. It was the most powerful geared motor I was aware of, until the Hentach came out.
3. QS 159.8 is a great motor. Yeah its gonna be less powerful than the GRIN motor I think, its going to be smaller (diameter) and possibly slightly less weight. I got mine off alibaba pre tariff for $150 bucks. Its a 1000w motor but QS typically under-rates thier motors, and with a higher voltage and statorade its like a 1500-2000w continuous motor. Its the lowest power motor QS makes, and its fat. Its a nice little unit. Fits 4mm2 1019 phase wires no problem. Can run regen with it right out of the box, no gears/clutch/keys to worry about. A great option, no issues with mine so far.
4. I still dont know much about the Hentach, and theres not a ton of information about it. Its the new, most powerful geared hub motor, as far as I know. But it has issues of its own such as "thru axle", hard to purchase, etc. May be a year or two until these become more mainstream who knows.

Is there a specific reason you want a geared motor? Like if you are climbing steep hills or something that would totally make sense. But otherwise the DD QS159.8 may be a great option worth considering. Its almost the same weight, only 1kg or so heavier than a G062, and more powerful, and regen ready.

Excellent detailed review. Thank you.

Not really. I was just looking at the geared hubs because I couldn't find any DD hubs for $200. Until you mentioned the GS159.8 that is. So now I'm in talks with them about ordering one. It seems perfect for me actually.

However it seems to come with a z910 connector only? Yours came with a z910? You had to swap it yourself to an L1910?

Other than that it looks perfect. I can actually use it as is with the z910 on a Baserunner z9 controller I think. I just would use the autotune feature of the phaserunner software I guess as I don't know the proper settings to use.

Thank you so much for mentioning it and sharing all the details. This has helped me tremendously. I think the qs159.8 is an unknown motor still on the market and could be a serious contender if people knew about it. Especially for regen.

So all I need to do is order it and get one more V7 torque arm for the other side. Should be perfect for me. I'm stoked.

You might want to create a thread on it like you did for the Bafang and MXUS models. It's the value leader right now it seems.

Oh, and a real guy finally answered me back and confirmed it is actually a DD motor and not geared like their AI was trying to tell me. lol.

 

[Boosted]

Excellent detailed review. Thank you.

Not really. I was just looking at the geared hubs because I couldn't find any DD hubs for $200. Until you mentioned the GS159.8 that is. So now I'm in talks with them about ordering one. It seems perfect for me actually.

However it seems to come with a z910 connector only? Yours came with a z910? You had to swap it yourself to an L1910?

Other than that it looks perfect. I can actually use it as is with the z910 on a Baserunner z9 controller I think. I just would use the autotune feature of the phaserunner software I guess as I don't know the proper settings to use.

Thank you so much for mentioning it and sharing all the details. This has helped me tremendously. I think the qs159.8 is an unknown motor still on the market and could be a serious contender if people knew about it. Especially for regen.

So all I need to do is order it and get one more V7 torque arm for the other side. Should be perfect for me. I'm stoked.

You might want to create a thread on it like you did for the Bafang and MXUS models. It's the value leader right now it seems.

Oh, and a real guy finally answered me back and confirmed it is actually a DD motor and not geared like their AI was trying to tell me. lol.

View attachment 198306

Yeah that sounds great. Unless you are planning to ride up super steep hills or run more than 4-5kw of power, the QS159.8 would be a great option.

I think I ordered mine with a L1019 but just swapped it out for the larger 4mm2 L1019 anyways. Plus added statorade while I had it open. Make sure you specify which thermistor you want (NTC 10k probably).

Definitely dont do Z910 or Z916 those are garbage connectors for 750-1500w. Those arent even big enough for a G062 let alone a QSmotor.

Yeah its a pretty new motor. Just hit aliexpress a few months ago. Most ppl still dont know about it.

Good luck with the setup! It sounds like it should work great

 

[OkinawaJapan]

Yeah that sounds great. Unless you are planning to ride up super steep hills or run more than 4-5kw of power, the QS159.8 would be a great option.

I think I ordered mine with a L1019 but just swapped it out for the larger 4mm2 L1019 anyways. Plus added statorade while I had it open. Make sure you specify which thermistor you want (NTC 10k probably).

Definitely dont do Z910 or Z916 those are garbage connectors for 750-1500w. Those arent even big enough for a G062 let alone a QSmotor.

Yeah its a pretty new motor. Just hit aliexpress a few months ago. Most ppl still dont know about it.

Good luck with the setup! It sounds like it should work great

Oh, okay. The guy I'm talking to there doesn't even know what a z910 connector is. He's asking for pictures of one while showing me that's what it comes with. lol...

I'll ask him again if he can do the L1019 connector from the factory. That's easier for me.

Next problem is I need to find a 20 inch fat rim and the correct spokes. Not sure if the grin spoke calculator will have this model in it yet, but I am hoping I can manually input the dimensions?

Taking all advice on the wheel build aspects. I'll probably order it today. lol. Thanks again!

 

[Boosted]

Oh, okay. The guy I'm talking to there doesn't even know what a z910 connector is. He's asking for pictures of one while showing me that's what it comes with. lol...

I'll ask him again if he can do the L1019 connector from the factory. That's easier for me.

Next problem is I need to find a 20 inch fat rim and the correct spokes. Not sure if the grin spoke calculator will have this model in it yet, but I am hoping I can manually input the dimensions?

Taking all advice on the wheel build aspects. I'll probably order it today. lol. Thanks again!

Yeah its easy to put in the dimensions on grin spoke calculator

Probably not a bad idea to screenshot the L1019 wiring diagram from grins website and send it to them, in hopes that its wired the exact same. OEM L1019 wiring should be adequate if you are only running 90 phase amps around the pavement, but the 4MM2 L1019s can always be upgraded. And statorade is a good idea too.

Good luck!

 

[OkinawaJapan]

Yeah its easy to put in the dimensions on grin spoke calculator

Probably not a bad idea to screenshot the L1019 wiring diagram from grins website and send it to them, in hopes that its wired the exact same. OEM L1019 wiring should be adequate if you are only running 90 phase amps around the pavement, but the 4MM2 L1019s can always be upgraded. And statorade is a good idea too.

Good luck!

Thanks. Yeah. Just sent them that. Fingers crossed they'll be able to do it. I suspect I've got the temp weekend staff guy who knows nothing about anything today.
I may have to wait until Monday to talk to someone who can confirm they can do it.

Okay. Thanks. Will do. I'm off to research rims and spoke lengths now. Thanks again!

 

[Boosted]

Thanks. Yeah. Just sent them that. Fingers crossed they'll be able to do it. I suspect I've got the temp weekend staff guy who knows nothing about anything today.
I may have to wait until Monday to talk to someone who can confirm they can do it.
View attachment 198309


Okay. Thanks. Will do. I'm off to research rims and spoke lengths now. Thanks again!

I just checked my alibaba history. They got me a 10k thermistor as I requested, but I just got it with whatever phase cable they had. And swapped it out. I paid 140 shipped pre tariffs.

 

[OkinawaJapan]

Cool. Yeah, he just quoted me $102 for the stock motor and $43 for shipping. So $145 total. Great price!

He's going to get with his engineer on Monday to confirm he can swap the connector to an L1019. I asked for the 4MM2 cable size in the official quote as well.

Also asked for the NTC 10k thermistor with a beta value of 3450. He's on it. This is so cool.

Meanwhile I'm in the spoke calculator. I may start a specific thread on it to get further input. So far I can figure out a few of the dimensions:

Flange Diam. = 179mm
Flange Spacing = 66.5mm
Dishing Offset = -3mm? See below.
# of spokes = 36. I'm only finding 20x4.0 fat rims on aliexpress that are 36H. Not finding 32H rims yet. Maybe 36 will be stronger anyway? Grin uses 32H but are sold out currently. They don't have 80mm wide rims at all either.
Axle Length 175mm

Rim Settings: Don't have this info yet as it's not posted in the listing.
https://vi.aliexpress.com/item/1005006422216871.html $33.28 with free shipping.
or here: https://vi.aliexpress.com/item/1005005192914786.html $30.70 with free shipping.

I might have to get the rim in hand first to measure it.

Lacing options:
Will do a single cross as per Grin's recommendation in their video for ebike hubs.
ERD = ??? I've asked the resellers. Awaiting response.
Left Offset = ??? I've asked the resellers.
Right Offset = ??? I've asked the resellers.
Rim Width = 80mm

I'm following Grin's video on how to measure a hub motor's "Lock Nut Dimensions" but I can't get the axle hub width from the below diagram as I don't think it's listed. Might need the hub in hand as well to determine?
Shown here at 03:20 in the video:

Actually I may have figured it out. I think it's 28.5 - 31.5 = -3mm for the offset?

Online Spoke Calculator for Hubmotors and Ebikes

Our handy spoke length calculator allows for easy calculation of spoke length for custom builds - and is the only one of its kind to include paired spoke holes in the flange as is common with many large diameter hub motors. It also creates an automatic side view drawing of the laced wheel and...

ebikes.ca

This is what I get so far:

Or I could put the right elbows "In" for a better tension ratio:

 

[OkinawaJapan]

It's a good thing I'm looking at this wheelbuilding stuff right now today because when I placed my order with Grin for my Max45 rear hub I chose a 65mm wide rear rim. But my ebike has an 80mm rear rim. So I've just emailed them urgently to get that addressed before they ship it out. I don't want a skinny rear rim compared to the front. lol. I don't think they have 80mm in stock though. So they may have to just send me the hub and I'll have to build it myself perhaps...

 

[OkinawaJapan]

Also, if anyone is looking for just the cheapest 1000w geared hub motor already built into a fat rim I found this one for $170 with free shipping.

https://vi.aliexpress.com/item/1005008769473876.html

 

[OkinawaJapan]

3. QS 159.8 is a great motor. Yeah its gonna be less powerful than the GRIN motor I think, its going to be smaller (diameter) and possibly slightly less weight. I got mine off alibaba pre tariff for $150 bucks. Its a 1000w motor but QS typically under-rates thier motors, and with a higher voltage and statorade its like a 1500-2000w continuous motor. Its the lowest power motor QS makes, and its fat. Its a nice little unit. Fits 4mm2 1019 phase wires no problem. Can run regen with it right out of the box, no gears/clutch/keys to worry about. A great option, no issues with mine so far.

Alright. I've ordered the QS159.8 today from them. They were great to work with in chat. They said they can't change out the cable but can install the thermistor. NTC10 with the beta value of 3435.

I also ordered a rim and the L1019 cable from grin. Hoping that one is 4mm2 like I think you mentioned it was from Grin.

Will have to await both rim and hub to determine spoke length. Fun times ahead. Thanks for all your detailed answers.

Also, I've learned a few things from grin via emails that I'll share above by reediting a few past posts. In case it helps anyone who comes through here later.

Edit: I asked the reseller what the size of the stator is in the QA159.8. He said that it is a 60mm wide stator. Wow. Fat. Even wider than the Max45 by Grin if true. He also said the diameter is 159.8. Hence the name I guess.

20 pole pairs.