Fat bike 48v 250w 22a maximum

[AGS]

Now we are getting somewhere.

Your battery specifications are:

Nominal voltage = 48v
Maximum discharge current = 25 amps
Battery capacity = 17.5 AH

This means that peak power delivered to your motor is 1000W, which is very good for a 250W factory e-bike.

This also means that you cannot have a bigger controller than what you already have, so there is no good reason for you to swap it out with a KT controller.

You may however need a password to change the pas settings on your existing controller.

 

[Jon dor]

Hi thanks for the speedy reply I have the password for the display but like I say when in the settings I can change pas level's.But not the percentage levels for each level.thats what I been trying to do,the only one I have seen up to now is on the G Force T42 folding fat tyre bike.

 

[AGS]

What display do you have? Can you post a photo?

 

[Jon dor]

YL81F display

 

[AGS]

Here is the manual for the display.

FREESKY YL81F Electric Bike Display User Manual

FREESKY YL81F Electric Bike Display User Manual

device.report

So is it any better if you set P11 to 1 and P12 to 5?

I don’t see anywhere in the manual that lets you change the percentage of each pas level individually. Maybe someone else has better knowledge of this display and controller.

 

[999zip999]

I'm guessing you have five settings what speed do you go on each setting.
1. ?
2. ?
3. ?
4. ?
5. ?

 

[Jon dor]

I have at this moment I have 0-3 1 gives me 19km 2 gives me 25km 3 gives 25km as for your suggestion pas 11 -1 pas12-5
I have already done that.and like I said in this display and controler it's not possible to change the pedal assist percentage.But that's what I've been searching for because I know they exist,if they do for my bike now that's a different story.
But I'm sure it can be done I just have to find the correct control and display.

 

[AGS]

Maybe try setting P5 to 0-9 to give a wider range of PAS. And make sure P8 is set to 100km/hr.

25km/hr max speed seems way too low, so something isn’t set up properly.

 

[Jon dor]

Ok will do thanks for the feed back really appreciate it.ill give you an update after I leave the office today I'll set it 0-9 and will set the speed limit to 100km/hr

 

[AGS]

I found a different version of the display manual for an Eskute. And the P settings are very different than in the other manual. Page 11 talks about changing the PAS ratio for each level like you are trying to do, using P3. In the other manual P3 is used to change the voltage setting.

Pas Level Setting - ESKUTE YL81F User Manual [Page 11]

ESKUTE YL81F Manual Online: Pas Level Setting. 03P is the Pedal assist level setting. The available PAS level settings are: 03, 13, 05, 15, 17, 07, 09, 19. Press to enter the parameter changing state. Press the parameter setting and return to the personalized parameter setting...

www.manualslib.com

 

[Jon dor]

I have tried a thousand time to do this but when I press enter it won't give the option to adjust any percentage.

 

[AGS]

Then maybe your display isn’t configured to allow you to do this.

 

[Jon dor]

No it isn't and my pas setting on my display is p5 not p3 but thanks

 

[Jon dor]

You see different

 

[Jon dor]

Changed pas level now to 0-9 and sett speed to 100km/hr so I will see later today if this is the solution,I hope so because this bike so heavy in pas assist 1-2-3 in pas level 0-5 so let's see .

 

[Jon dor]

this is what I'm looking for that's why i thought with anew controller and display it would be possible I'm still sure it is but i will wait and see how 0-9 turns out later

 

[999zip999]

Maybe you need a title change
48v x 22a = 1,000 watt
As we know the motor and the battery are dumb the BMS does have some brains.
The controller all that says something right there do you have a throttle with this pas

 

[Jon dor]

No I don't there illigal here in the Netherlands,I tried pas 0-9 well 123 I got no assist 4 gave me a 17km/pH 5 gave me 25km/pH and six gave me around 35km/pH that's why I'm thinking the percentage settings done at the factory are really off .

 

[Jon dor]

well thank you for this I would just like to add I have the Knaap AMS boy fat bike 20x4 inch wheels, as above I have changed the wheel settings about 4 times to get a more accurate speed reading on the display. I went to 24 the settings but that put my speed at 4 km/h over my GPS reading I then did 22 and that gave my display 2.5km/h over the GPS reading finally I changed my wheel size in the display settings to 21 and now it is the perfect reading on the bikes display and on the GPS reading hope this can help someone.so when I ride at 25km/h it is 25km/h hope this can help anyone who is also having the same problems

 

[Jon dor]

I have a 250w rear hub Bafang with the s830 display now in P07 its for magnet speed 1-255 the lower numbers give crazy speed readings but at 255 I am still 12km too fast compared to my GPS what am I doing wrong I have a Candance PAS sensor 12 magnets a dual controller 36/38v 15ah 48v 21a battery something is not right anyone can help me please and i have 20inch wheels standard Chinese fat bike tyres which I have in settings at 20 inches is this correct

P07​

Motor Magnet Type

0-100 for motor speed detection. in my settings i have the option till 255 i don't understand

 

[Jon dor]

the idea is:
if you dont know how the hall and phase wires match up with the motor you use the self learn to make it simpler to find correct combination,
you connect self learn wire ( assume you know from diagram how to do that) then turn on power ( battery), at this stage you have the halls and phase wires connected together ( whichever way you like), give a little bit of throttle, if it runs smooth from stopped you've got correct combo, if it doesn't run smooth,
you change two of the phase wires, try a little throttle again, you should get correct combination by just swapping the phase wires till it runs correctly in correct direction ( no need to change the hall wires hence it reduces the possible number of combinations), once you have it running smooth from any stop position, you disconnect the self learn wire, and then turn off controller. It will remember the setting each time you turn on controller, no need to use self learn any more.
So instead of having 36 possible combinations to choose from you only have a few combinations to choose from by changing phase wire combinations.

hope you don't mind me jumping in here I have the learning wires but no throttle I use only PAS on my bike, so when I plug the learning wires in my wheel does not spin but the motor makes a noise, when I unplug it and plug in again my rear wheel spins .am i doing something wrong or are my phase wires wrong any help please oh I also get error 7 display s830.

 

[Jon dor]

Hi all anyone know what rear hub motor this is and which controller is compatible, I bought it blind thinking it was a bafang but it's obvious it isn't any ideas please.

 

[Jon dor]

I'm pulling my hair out I have a L1121 rear hub motor cable 11 pin problem is my G062 750w rear hub motor connector has 9 wires 6 Hals and 3 phase.
Where the cable I just realized has 11 wires 3 phase and 8 wires the normal colors would be the 6 Hals connector black red blue green yellow and white, but there are 2 more a Grey and purple kind of colour, now I connected the usual colour to colour sequence.
Nothing works so I'm thinking I have the wires the wrong way round does it have anything to do with the grey or the purple wire and advice please.

 

[Jon dor]

Hi everyone I have a bafang rear hub motor 48v 750 with a L1121 Red connector, the wires coming from the motor are the normal 6 Hals wires and the 3 phase wires.
The problem is I bought a new extension cable same make but this has 11 wire the 6 normal Hals wires but it has 2 extra wires a Grey and purple I think and the normal 3 phase wires, I connected the obvious colors to colour's but it won't work, no errors on the display I'm using A KT 21A 36v48v controller am I connecting the correct sequence is it something to do with the 2 extra wires do I need to swap them if so which combination on the Hals connection. Any help please I have enclosed photos. One is normal 9 wire 3 phase and 6 Hals the other 11 wires 3 phase and 8 Hals.

 

[daniel84uk]

Temp sensor for the extra wires? The colours are often different for different motors my last motor white was for hall and green for temp. Send 5v down black red with a psu and probe the others with a cheapo multimeter whilst rotating the wheel. The temp wire will change resistance if you heat the motor.