AKM-100SX 36V250W Front 201rpm vs 328rpm

[Gooseman]

Just ordered AKM-100SX 36V250W Front 201rpm but got email saying out of stock would i take 328rpm. Would this be a big difference? Does that equal 50% more speed and 50% less torque roughly or does it not work like that?

 

[vfr400]

328 rpm is too fast for a 26" or bigger wheel. It can work in something like a road bike, where you're at constant high speed, but is unsuitable for normal bike speeds. Also, it will tend to over-heat your controller when in a big wheel. 328 rpm is for 20" wheels and smaller.

 

[Gooseman]

328 rpm is too fast for a 26" or bigger wheel. It can work in something like a road bike, where you're at constant high speed, but is unsuitable for normal bike speeds. Also, it will tend to over-heat your controller when in a big wheel. 328 rpm is for 20" wheels and smaller.

Thanks will see if they can offer a different motor.

 

[vfr400]

This one for the rear. If somebody pealed off the label and it would be the same as any other "250w" motor:

AKM-128CST 48V500W Rear Driving Hub Motor Cassette motor For ebike [AKM 128CST 48V500W motor] - $113.75 : Zen Cart!, The Art of E-commerce

Zen Cart! AKM-128CST 48V500W Rear Driving Hub Motor Cassette motor For ebike [AKM 128CST 48V500W motor] - ★★★★★ AKM-128CST 48V500W Rear Driving Hub Motor Cassette motor For ebike Specification: 1. Voltage: 48V. 2. Brake type: V-brake, rim brake and disc brake are compatible 3. Connector...

www.topbikekit.com

 

[Gooseman]

This one for the rear. If somebody pealed off the label and it would be the same as any other "250w" motor:

AKM-128CST 48V500W Rear Driving Hub Motor Cassette motor For ebike [AKM 128CST 48V500W motor] - $113.75 : Zen Cart!, The Art of E-commerce

Zen Cart! AKM-128CST 48V500W Rear Driving Hub Motor Cassette motor For ebike [AKM 128CST 48V500W motor] - ★★★★★ AKM-128CST 48V500W Rear Driving Hub Motor Cassette motor For ebike Specification: 1. Voltage: 48V. 2. Brake type: V-brake, rim brake and disc brake are compatible 3. Connector...

www.topbikekit.com

Thanks this one is for my brother in law whos a HGV driver, he wont want to take the risk so would need to be a labelled 250w motor.

AKM-75SX 36V250W do you know how this would compare to the 100sx?

The other possibilty if he will go for rear hub is AKM-100CST Cassette 36V250W EBike Rear Driving Hub Motor 36 holes with 8 speed cassette.

Being fitted to Carrera Crossfire 2 Mens Hybrid Bike 700c wheel

 

[vfr400]

If he has 8 speeds or more, he needs a cassette motor, so the out of stock one would be a bad choice.

 

[wheeliepete]

This is the same motor as the 100SX.

Q100H 36V350W Front Driving EBike Hub Motor RPM 201

Q100H 36V350W Front Driving V-brake, rim-brake, Disc-Brake compatible E-Bike Hub Motor. Its reduction ratio is 12.6. The Q100H is more powerful than Q10...

bmsbattery.com

One of these if you must.

would need to be a labelled 250w motor.

Pedelec ebike 2x motor sticker 250w legal for 28“ wheel Bafang, BMC, MAC, Bosch | eBay

If your motor does not identify this, one of these stickers can be used.

www.ebay.co.uk

 

[Gooseman]

If he has 8 speeds or more, he needs a cassette motor, so the out of stock one would be a bad choice.

The out of stock motor was a front hub motor (AKM-100SX 36V250W ).

 

[wheeliepete]

Or this one.

AKM-100H 36V350W 36Holes Front Driving Hub Motor [AKM-100H Front Motor 36H] - $81.90 : Zen Cart!, The Art of E-commerce

Zen Cart! AKM-100H 36V350W 36Holes Front Driving Hub Motor [AKM-100H Front Motor 36H] - ★★★★★ AKM-100H 36V350W EBike Front Driving Hub Motor Specification: 1. Voltage: 36V. 2. Brake type: V-brake, rim brake and disc brake are compatible 3. Connector: 9Pins Motor Cable Plug 4. A speed sensor...

www.topbikekit.com

 

[Gooseman]

This is the same motor as the 100SX.

Q100H 36V350W Front Driving EBike Hub Motor RPM 201

Q100H 36V350W Front Driving V-brake, rim-brake, Disc-Brake compatible E-Bike Hub Motor. Its reduction ratio is 12.6. The Q100H is more powerful than Q10...

bmsbattery.com

One of these if you must.

.

Got the rest of the order coming from topbike kit and already paid so would be easiest if i could get a different one they supply. The AKM-75SX 36V250W seems to be the closest to the 100sx front hub motor but i can't see any real difference apart from weight of the motor

 

[Nealh]

The weight of the motor is ideal for lightweight riders but if he is a big burly trucker then it will struggle, if he is only about 10st it will be ideal.

 

[Nealh]

kit.html#/213-rpm-201[/URL]
One of these if you must.

Pedelec ebike 2x motor sticker 250w legal for 28“ wheel Bafang, BMC, MAC, Bosch | eBay

If your motor does not identify this, one of these stickers can be used.

www.ebay.co.uk

That sticker is a fake as my Bafang is sn 563745 .

 

[Gooseman]

The weight of the motor is ideal for lightweight riders but if he is a big burly trucker then it will struggle, if he is only about 10st it will be ideal.

I am guessing he is about 13-14 stone so i'll try and get him onto rear hub AKM-100CST Cassette 36V250W

 

[Nealh]

GBK sell the AKM 100 as a GBK100.

bldc motor, 36v250w hub motor, front driving motor for electric bicycle BBS, ebike batteries, Bafang M620, Bafang M600, Bafang M500, Bafang M510, KT controller with display-GreenBikeKit.com

bldc motor, 36v250watts hub motor, front driving motor for electric bicycle, 250W~350W, high speed, light weight, hall sensored motor and sensorless motor are available, Elektriske motorer, voorwielmotor,

www.greenbikekit.com

 

[vfr400]

I am guessing he is about 13-14 stone so i'll try and get him onto rear hub AKM-100CST Cassette 36V250W

The 75 is a tiny thin motor that is only suitable for low power and light weight solutions. the one I had was sensorless too, so only worked with certain controllers, though your listing does say it has sensors and shows the 9-pin connector.

 

[Nealh]

I am guessing he is about 13-14 stone so i'll try and get him onto rear hub AKM-100CST Cassette 36V250W

The AKM128CST is small at only 128mm dia, a lot smaller then most 250w hubs sold or available on OEM bikes.

 

[Gooseman]

Thanks everyone i will see what he goes for later tonight but between AKM-100CST and AKM128CST. He did have a go on my bike which had AKM-100SX 36V250W Front hub & 48v battery which he was more than happy with and would assume the 100CST would perform very similar?

 

[Nealh]

AKM 100 had issues at more then 20a & 48v, AKM128 handles 25a ok & probably ok at 30a.
On German forum a guy used 60v and 40a on Bafang SWXK using oil cooling on a hot rod tadpole.

 

[Gooseman]

AKM 100 had issues at more then 20a & 48v, AKM128 handles 25a ok & probably ok at 30a.
On German forum a guy used 60v and 40a on Bafang SWXK using oil cooling on a hot rod tadpole.

Thanks for the heads up i've lowered the output to just under 15amps on my controller and find it's got more than enough power to get up hills for me normally at assist 4 for the steeper ones. Feels like 3 or 4 times the power of my first voilamart kit with 36v battery.

 

[awol]

Not wanting to hijack the thread but on a similar subject how does speed/power compare with a 36v Q100H 260rpm @36v vs a 36v Q100C 201rpm @44v ? Both @15a or 17a or 20a