Any other controllers that will work on Yose power 350w

[scbk]

Hi folks,

After a year and 1200 miles it seems the controller on my yose power 350w rear wheel kit is now kaput.
It started off recently, it would intermittently freeze the speed and motor watts on the display for 10+ seconds, during which you're lose all power to the motor, then it would come back to life and be fine for a few minutes/miles.
I was emailing yose power through ebay, they wanted a video of it happening, easier said than done when it was random.

Was out one night last week trying to record it when the bike cut out completely - screen went blank, and the switch on the battery wouldn't light up. (the battery is fine when not connected to the rest of the kit)

Yose power said the problem was either motor or controller
Borrowed a friend bike that has other problems, and his controller powers up fine on my bike.


Anyway Yose power have said I can buy a new controller off their site, nearly £50 with delivery though!!

KT-DC36V Controller for Brushless Motor Suitable for All KT-LCD and KT-LED Displays for 36V Motor/Battery Use Only

<p><span style="font-family:Verdana,Geneva,sans-serif;">*12 months warranty<br /> *Pass CE, ROHS, UL<br /> *Attention: this KT controller only compatible with KT brand LCD display!</span></p>

www.yosepower.com

There's similar looking controllers on ebay starting at less than a tenner, but the main disadvantage is they don't come with the right plugs, so would inlove a fair bit of fannying about with a soldering iron!

Any suggestions/ideas?

Haven't got round opening up the old controller yet.......

 

[Nealh]

Show us a pic of your controller and the connectors.
Your controller sounds like it is suffering from thermal cut outs, the 6 mosfet ones do this once they get to hot. Temporarily they short until they cool down then work again, I was having similar issue riding on the South Downs using high assist when climbing steep inclines at low speed. The controller gets so hot you can't touch it without getting a scald burn, I first tried an extra heat sink which helped a bit then added a couple of 5v mini fans with a separate 18650 power supply but git fed up with the extra faff. I now just use the better 9 mosfet signwave controller.

 

[scbk]

Hi, thanks for the reply, been busy with work, finally got another chance to look at the bike

 

[scbk]

Show us a pic of your controller and the connectors.
Your controller sounds like it is suffering from thermal cut outs, the 6 mosfet ones do this once they get to hot. Temporarily they short until they cool down then work again, I was having similar issue riding on the South Downs using high assist when climbing steep inclines at low speed. The controller gets so hot you can't touch it without getting a scald burn, I first tried an extra heat sink which helped a bit then added a couple of 5v mini fans with a separate 18650 power supply but git fed up with the extra faff. I now just use the better 9 mosfet signwave controller.

Do you know if there's any 9 mosfet controllers that would be "plug and play" with the yose power 350w kit?
I can solder, but I'm not the best, and I bloody hate it!

 

[Nealh]

Yes there are 22a/ 9 fet KT sign waves available.

T09S 36V/48V500W 22A KT Sine Wave Controller with Julet Waterproof connector [T09S controller waterproof plug] - $31.85 : 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...

www.topbikekit.com

Okfeet KT Controller Electric Bicycle 36V 48V 22A Waterproof Sinewave Kunteng Controller Light Function for Ebike Conversion - AliExpress 18

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

 

[scbk]

Great thank you, I see there's ones with the light function, I take it that would work with the existing button, where holding down "up" brings on the lcd backlight? And the lamp required to run off it would be the same voltage as the battery ie 36v

 

[Sturmey]

Great thank you, I see there's ones with the light function, I take it that would work with the existing button, where holding down "up" brings on the lcd backlight? And the lamp required to run off it would be the same voltage as the battery ie 36v

Be careful. The light function controller uses a 9 wire 1T5 control cable so you may need to also purchase this to get the light to work.

 

[Nealh]

The lcd light function is only a back light for night riding to read the display, afaik never tried it. It doesn't actual switch riding lights.
The controller light function I think needs an aux switch to which the light then connects to, my SM connection controllers with the light feed work this way.

 

[Sturmey]

The lcd light function is only a back light for night riding to read the display, afaik never tried it. It doesn't actual switch riding lights.
The controller light function I think needs an aux switch to which the light then connects to, my SM connection controllers with the light feed work this way.

Hi. I have fitted both the yose 350w kit that has no light function and a yose 250w front wheel kit that came with the extra wire in control cable and extra front connection that connects to supplied front light only. Both kits had almost identical KT 15A controllers and LCD3. The front light on 250w kit switches on with the lcd3 light when the arrow up button is pressed. It connects and works well (plug and play). I dont know what the front light voltage is but I suspect that it is not full battery voltage but a lower voltage to directly drive the leds in supplied front light.

 

[scbk]

Be careful. The light function controller uses a 9 wire 1T5 control cable so you may need to also purchase this to get the light to work.

Well spotted!

 

[scbk]

Thanks for everyone's help.

Got the OKfeet 22a controller, it's nearly 3 times the size of the original! Just fits in the old yose power controller bag!

Only done a quick test ride so far, but the display says the motor is now doing over 700w


And the lights work as expected by holding down the "up" button, although not fitted them on the bike yet.