15+kw hub motor?

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John1deere   10 mW

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15+kw hub motor?

Post by John1deere » Sep 07 2018 5:44pm

Whats the best option for 150/155mm drop out? Looking to do a motocross kinda ebike. Needs tons of torque with 50-60 mph top speed. Shooting for 15+kw possibly 20+. So whats out there that wont over heat too much if i use ferro fluid and hub sink?

No i do not want a mid drive. I want to keep it as simple as possible with the least amount of failure points.

thanks!

atarijedi   100 W

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Re: 15+kw hub motor?

Post by atarijedi » Sep 07 2018 11:18pm

You can supposedly hit 20kW (max) with a QS205 and hubsinks+statorade.

What will your pack voltage be though? The max voltage will determine the top speed.

John1deere   10 mW

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Re: 15+kw hub motor?

Post by John1deere » Sep 07 2018 11:43pm

Ill most likely be running 30s so 126 volt at full charge if my math doesnt suck too much. I know qs205 got many choices for wiring turns. Was just wondering if there was something "better". i know theres cromotor that seems to be very similar too. I got a crystalyte atm but they dont seem to make something as beefy

SlowCo   10 kW

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Re: 15+kw hub motor?

Post by SlowCo » Sep 10 2018 7:56am

If you want a step up from a QS205 and are able to stretch or build the swing arm to 200mm drop out width then go for the 273 V3 50H spoke hub motor:
http://www.cnqsmotor.com/en/article_rea ... r/264.html


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brumbrum   100 kW

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Re: 15+kw hub motor?

Post by brumbrum » Sep 10 2018 11:03am

Yep, it sound like you are not comvinced with people telling you to use the 205, so the only other choice is the 273. It will weigh a ton and you will need a custom swingarm to accommodate the wider axle. A great dragster motor, but not sure its the correct choice for off roading.
My NYX and cromotor build
viewtopic.php?f=6&t=74615
My LMX 161 dirt bike build
viewtopic.php?f=6&t=94074

John1deere   10 mW

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Re: 15+kw hub motor?

Post by John1deere » Sep 10 2018 12:03pm

brumbrum wrote:
Sep 10 2018 11:03am
Yep, it sound like you are not comvinced with people telling you to use the 205, so the only other choice is the 273. It will weigh a ton and you will need a custom swingarm to accommodate the wider axle. A great dragster motor, but not sure its the correct choice for off roading.
Just trying to see if theres other options. i seen a 6 phase motor here but apparently not available anymore.

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brumbrum   100 kW

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Re: 15+kw hub motor?

Post by brumbrum » Sep 10 2018 2:36pm

John1deere wrote:
Sep 10 2018 12:03pm
brumbrum wrote:
Sep 10 2018 11:03am
Yep, it sound like you are not comvinced with people telling you to use the 205, so the only other choice is the 273. It will weigh a ton and you will need a custom swingarm to accommodate the wider axle. A great dragster motor, but not sure its the correct choice for off roading.
Just trying to see if theres other options. i seen a 6 phase motor here but apparently not available anymore.

The hub monster of which you speak i think is similar to the qs273 in size.
My NYX and cromotor build
viewtopic.php?f=6&t=74615
My LMX 161 dirt bike build
viewtopic.php?f=6&t=94074

John1deere   10 mW

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Posts: 26
Joined: Jul 09 2018 2:54pm

Re: 15+kw hub motor?

Post by John1deere » Sep 10 2018 4:12pm

brumbrum wrote:
Sep 10 2018 2:36pm
John1deere wrote:
Sep 10 2018 12:03pm
brumbrum wrote:
Sep 10 2018 11:03am
Yep, it sound like you are not comvinced with people telling you to use the 205, so the only other choice is the 273. It will weigh a ton and you will need a custom swingarm to accommodate the wider axle. A great dragster motor, but not sure its the correct choice for off roading.
Just trying to see if theres other options. i seen a 6 phase motor here but apparently not available anymore.

The hub monster of which you speak i think is similar to the qs273 in size.
Hubmonster yeah. i have no idea when i saw it wasnt available anymore i stopped reading.

But i taught there could be something similar or wtv

atarijedi   100 W

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Re: 15+kw hub motor?

Post by atarijedi » Sep 13 2018 3:32am

John1deere wrote:
Sep 07 2018 11:43pm
Ill most likely be running 30s so 126 volt at full charge if my math doesnt suck too much. I know qs205 got many choices for wiring turns. Was just wondering if there was something "better". i know theres cromotor that seems to be very similar too. I got a crystalyte atm but they dont seem to make something as beefy
The cromotor was simply turning a QS205 V1 into a QS205 V3 before the V3 existed. There is the QS273, but it's quite a heavy motor, and won't be that great for offroad, which is why I suggested the 205 w/ hubsinks and statorade.

markz   100 GW

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Location: Alberta Canada

Re: 15+kw hub motor?

Post by markz » Sep 15 2018 6:19pm

QS273 is stated to have 50H while the MXUS 5kw is stated to have 55H.
https://ebikemotor.en.alibaba.com/produ ... 61c9Yh6bv0

Big price difference!

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