Yosepower 350w Lishui. Change controller, or change to mid-motor bike?

[a573245325]

I have a Rockrider ST bike with a Yosepower 36V 350w hub kit. I'm happy with the power, but want more of an assistance rather than a speed feel. The controller is a lsw1599-3-5m.

I had thought I need to get a different bike with a mid-motor drive and torque sensors, but then I read about KT controllers.

I have 2 batteries so I'm sticking with 36V for now, but may want to go up to 48 at some point. I may also change the hub to a 250W one to be legal. I found the T09S and T09P. Do I need sine or square wave, and is this controller too big for my motor? Or am I going down the wrong path?
Cheers.

 

[saneagle]

I have a Rockrider ST bike with a Yosepower 36V 350w hub kit. I'm happy with the power, but want more of an assistance rather than a speed feel. The controller is a lsw1599-3-5m.

I had thought I need to get a different bike with a mid-motor drive and torque sensors, but then I read about KT controllers.

I have 2 batteries so I'm sticking with 36V for now, but may want to go up to 48 at some point. I may also change the hub to a 250W one to be legal. I found the T09S and T09P. Do I need sine or square wave, and is this controller too big for my motor? Or am I going down the wrong path?
Cheers.

Sine wave is better in most circumstances. The 250w version gives more power for speeds up to the legal limit and would also be better for 48v because it has a more appropriate Kv.

 

[Benjahmin]

Sine wave will be smoother and quieter. With KT you can alter the maximum current in the settings. However the maximum current is only applied in highest assist setting.
So limiting it to 17A @ 36v will be give you 720W on top setting but still be less than the maximum amperage of the controller. So kind to the controller, OK for the motor and alright for the battery so long as it's maximum current delivery is 20A or more.

 

[a573245325]

Thank you for the replies. Is the Lishui square wave?

The only place I can find the 22A sinewave Waterproof connector version that will also ship to the UK is this one. I also need to add the LCD controller.

Electric Bicycle Sine Wave Controller, Brushless, KT 15A-30A, 36V, 48V, 250W-1000W, Bicycle Accessories - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

 

[saneagle]

Thank you for the replies. Is the Lishui square wave?

The only place I can find the 22A sinewave Waterproof connector version that will also ship to the UK is this one. I also need to add the LCD controller.

Electric Bicycle Sine Wave Controller, Brushless, KT 15A-30A, 36V, 48V, 250W-1000W, Bicycle Accessories - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

You might have a problem with the pedal sensor if you get the waterproof connector one because the wires are often in a different sequence in the connector, though you can always hack the connectors off and join the wires. Also, it doesn't really make sense to use the controller with waterproof connectors if you get the aluminium box type, since you still need a bag or box to put it in, in which case you don't need waterproof connectors. Topbikekit has the Hailong type:

KT- 36V/48V 9Mosfets Sine Wave Controller for 10S/13S/14S Big Hailong 1-2 Case 65pcs cells [Hailong 1-2 22A Controller] - $48.00 : Zen Cart!, The Art of E-commerce

Zen Cart! KT- 36V/48V 9Mosfets Sine Wave Controller for 10S/13S/14S Big Hailong 1-2 Case 65pcs cells [Hailong 1-2 22A Controller] - ★★★★★ KT- 36V/48V 9Mosfets Sine Wave Controller for Big Hailong case 65pcs cells case 1--Rate Voltage:36V or 48V KT sine wave controller 2--Maximum...

topbikekit.com

the block connector type:

T09S 36V/48V500W 22A KT Sine Wave Controller For ebike [T09S KT 9Mosfers Controller] - $28.00 : Zen Cart!, The Art of E-commerce

Zen Cart! T09S 36V/48V500W 22A KT Sine Wave Controller For ebike [T09S KT 9Mosfers Controller] - ★★★★★ T09S 36V/48V450W-500W Torque Simulation Sine Wave Controller For ebike 1--Rate Voltage: 36V/48V Compatible 2--Maximum Current:22±1A 3--Low Voltage Protection:DC30±0.5V 4--Speed Set: 1-4.2V...

topbikekit.com

and the waterproof type:

T09S 36V/48V500W 22A KT Sine Wave Controller with Julet Waterproof connector [T09S controller waterproof plug] - $35.00 : Zen Cart!, The Art of E-commerce

Zen Cart! T09S 36V/48V500W 22A KT Sine Wave Controller with Julet Waterproof connector [T09S controller waterproof plug] - ★★★★★ T09S 36V/48V500W Torque Simulation Sine Wave Controller With Julet Waterproof connector 1--Rate Voltage: 36V/48V Compatible 2--Maximum Current:22±1A 3--Low Voltage...

topbikekit.com

 

[a573245325]

An update. Thanks for the help. I got the 22A sine wave controller with Julet connectors, and LCD3 and a 1 to 5 cable. All plugged in no problems including the pedal sensor. C1 needed to be 07 though to recognise the pedal sensor.

I found current control is so much more enjoyable to ride than speed control.

I also fitted a throttle control and set it up to limit to 6km/h to start with and then full power after pedaling. I think this is UK legal? The only issue I saw was that if you are using throttle while pedaling, and then stop pedaling, then it doesn't immediately cut the power. You have to release or reduce the throttle. I think this bit is a problem in the UK? Is there a way to make it legal?

The last bit is to swap out the 350w Yosepower motor and wheel for a 250w motor. Best to contact Yosepower for a price on a new wheel or any other suggestions please? The wheel is 27.5"
Cheers.

 

[saneagle]

An update. Thanks for the help. I got the 22A sine wave controller with Julet connectors, and LCD3 and a 1 to 5 cable. All plugged in no problems including the pedal sensor. C1 needed to be 07 though to recognise the pedal sensor.

I found current control is so much more enjoyable to ride than speed control.

I also fitted a throttle control and set it up to limit to 6km/h to start with and then full power after pedaling. I think this is UK legal? The only issue I saw was that if you are using throttle while pedaling, and then stop pedaling, then it doesn't immediately cut the power. You have to release or reduce the throttle. I think this bit is a problem in the UK? Is there a way to make it legal?

The last bit is to swap out the 350w Yosepower motor and wheel for a 250w motor. Best to contact Yosepower for a price on a new wheel or any other suggestions please? The wheel is 27.5"
Cheers.

P4=1, C4=3 are the settings for legal. Have you set C14 =1?

The best I've see is about £150 for a motor wheel on Aliexpress. The shipping is ecpensive because of the size of the box. Motors on their own can be had for about £65, but then you have to buy a rim, spokes and build it.

 

[a573245325]

Ah thank you. The manual I found just said "Retain" for C4=3 so I had it set to 1. I'll try 3.

C14=2 at the moment. What's the benefit of setting C14=1?

 

[saneagle]

C14=2 at the moment. What's the benefit of setting C14=1?

I think that only has a noticeable effect if you have P3=0 for speed control. With P3=1 for current control, it seems pointless to me, though I'm not sure whether somebody said that it might jack up the power levels a bit. i always found the default power levels pretty good, so I never touched C14.