Kermit

Yes. Speed goes to zero as you said. There is no external speed sensor. The speed is read from the mosfet. Maybe I don't know of the basis of how this system works.

Controller is Kt type bought on Ali from C&D seller. Display is LCD 6 from the same seller. Motor is Mxus, refurbished, don't know the history. Breaks do not rubs, wheel can rotate freely. The biggest unknown is the motor I guess however I thought maybe I will find some clue here for C and P parameters setting.

Could you please advise if what I experience is right. I have been using 250 W geared rear motor (I believe it is mxus) with Kt controller for a year now. Works fine however what I see is that when I reach certain speed (depending on the charge level of the battery) speed meter stops at one value even if I am driving faster (I. e driving down the hill). In addition I 've got the feeling that the motor is stopping me (acts like a brake). When speed drops and motor starts working again everything is back to normal. In other words I have an impression that the motor makes some resistance. I am wondering what are your thoughts.

I wanted to share some thoughts here. I wanted to upgrade my KTV 12 signal, 6 magnets PAS sensor to something like 24 signal, 12 magnets. There is a room for additional magnets already made in plastic wheel. I have bought some random neodyme cylindrical magnets, with 3mm radius and 2 mm height. They fit perfectly. I’ve double checked the right polarization. And it worked, however not in the way I’ve expected. I think, the sensor is more sensitive but what is a negative thing here the PAS worked also with backward movement of the crank. I’ve played with some C parameter settings with no success. With disappointment I have removed additional magnets. I don’t know, maybe magnets were too strong, or the controller is not programmed to such a number of signals have no idea.

Hi, I was wondering what kind of magnets are used in these kind of sensors? Are there a neodyme magnets or others? The other question is the direction of magnetic field. In KTV12 it is on along the radius, towards the sensor, right?

Bigger clearance does the job. It works now as a charm. Thank you all for a suggestion!

You might want to look here: https://www.facebook.com/CyklonEbike/

I admit this was an issue at the beginning, there was a difference less than the mm between the gap and sensor width so I filed a crank arm a bit (it was enough to take only the coating). I thought it was ok since at constant speed, with even pedaling under no load it was working fine. I’ll try to file it more to get more clearance.

Hi All, A little bit of introduction. I have a 250W Mxus, 36V hub motor, mounted rear with cassette. I am using the KT controller with LCD 6 display. Also I have mounted PAS sensor, KT V 12 L – 6 Magnets, 12 signals. I have fitted all together and at first glance it worked fine. However I have noticed one annoying thing with my PAS. When I pedal evenly at a certain speed, PAS is giving the signal to the motor, speed is constant and you can feel the assistance from the motor. Then when I want to accelerate, PAS stops working for a while, speed on the LCD drops down significantly, motor is not working. When I reach a certain higher speed and starts to pedal evenly again, everything is back to normal, PAS gives a signal to motor and you can feel assistance again. It looks like the controller is not getting the signal from PAS/controller is not giving a signal to motor when there is a sudden change in cadence. Literally it seems like I need to match my pedaling to the sensor and the sensor does not react on my pedaling which, what I think it should look like. It might be a setting issue however there’s so much possibilities with P and C parameters that any suggestion or a clue would be appreciated. LCD manual http://www.szktdz.com/en/news_show.php?article_id=542 PAS http://www.szktdz.com/en/news_show.php?article_id=392 Did you hear anything similar?

Hi, Greetings to all forum users. I decided to register as I couldn’t find the answer to my problem. However I am happy to help others if I am able to do so.