January 30, 20206 yr Author Yes there is sensor only the plastic is not fixed.. I turned the bike wheels up and turn the pedals.. It react when i stop turning pedals the engine stops. When i turn the engine works again. When i tried to ride it i just turned the throttle and the powers cuts out
January 30, 20206 yr It react when i stop turning pedals the engine stops. When i turn the engine works again. When i tried to ride it i just turned the throttle and the powers cuts out The throttle behaving the same as the pedal sensor seems to point toward the battery supply and it’s cabling. Earlier you mentioned the battery key, does your key turn on and off the power or does it just lock the battery in place? If the key is also an electrical switch it would be worth testing the battery voltage on both sides of that switch under load to make sure the current isn’t being restricted. If you don’t have a track or maintenance stand to work on your bike you can use a door frame, put a screw in the door frame and tie a short rope from that to the saddle stem of the bike but make it short so the back wheel is a few inches above the floor. Then you can run the motor and use the brake to slow the wheel without struggling to hold the bike as well. If you run the motor while applying the brake it will simulate working the bike harder like going up a hill and the motor will draw more current from the battery . Just be careful that you don’t get misled by the speed limiter, if you are in a tall gear and you open the throttle when the wheel is in the air then the motor will quickly spin the wheel and it can easily exceed the speed limit set in the controller. This will cut the power and the wheel will spin down to a slow speed, at that point the motor will start again and drive the wheel. You should see the voltage reading to reduce as you increase the load. So if it starts at 40v with no load, the more you accelerate the motor and apply the brake the voltage should reduce gradually. If it drops suddenly when the fault occurs then the voltage is being lost in either the wiring, the key switch, any connectors, the connector where the battery clips to the holder or inside the battery itself. If all the switches, cables and the connections look clean and good with no volts dropped in them then it points to the battery.
January 30, 20206 yr I turned the bike wheels up and turn the pedals.. It react when i stop turning pedals the engine stops. When i turn the engine works again. This is the opposite of what you said in your first post: while i move on the power assist looks like goes down gradually as far as i pedal when i stop pedaling the power assist comes full again Which is correct? Also, it would help if we knew more about the history of the problem: How old are the bike and battery? How long have you had the bike? Has the bike ever worked correctly?
January 30, 20206 yr I no longer can help as to many conflicting quotes from the OP and unanswered results when asked for them. In #7 he originally said; " I put the third level even if its in the first level it cuts out.. When i turn the throttle also it cuts out. So no light in the display i have to turn the key so as to start again" This is typical of knackered battery esp when it happens in PAS1. The battery is affected by voltage sag/collapse.
January 30, 20206 yr Author This is the opposite of what you said in your first post: Which is correct? Also, it would help if we knew more about the history of the problem: How old are the bike and battery? How long have you had the bike? Has the bike ever worked correctly? I put the bike with wheels towards the ceiling.. Imean
January 30, 20206 yr Author I put the bike with wheels towards the ceiling.. Imean The bike is of 2017 has 3 years battery 2and half.. No it was working fine
January 30, 20206 yr Author The throttle behaving the same as the pedal sensor seems to point toward the battery supply and it’s cabling. Earlier you mentioned the battery key, does your key turn on and off the power or does it just lock the battery in place? If the key is also an electrical switch it would be worth testing the battery voltage on both sides of that switch under load to make sure the current isn’t being restricted. If you don’t have a track or maintenance stand to work on your bike you can use a door frame, put a screw in the door frame and tie a short rope from that to the saddle stem of the bike but make it short so the back wheel is a few inches above the floor. Then you can run the motor and use the brake to slow the wheel without struggling to hold the bike as well. If you run the motor while applying the brake it will simulate working the bike harder like going up a hill and the motor will draw more current from the battery . Just be careful that you don’t get misled by the speed limiter, if you are in a tall gear and you open the throttle when the wheel is in the air then the motor will quickly spin the wheel and it can easily exceed the speed limit set in the controller. This will cut the power and the wheel will spin down to a slow speed, at that point the motor will start again and drive the wheel. You should see the voltage reading to reduce as you increase the load. So if it starts at 40v with no load, the more you accelerate the motor and apply the brake the voltage should reduce gradually. If it drops suddenly when the fault occurs then the voltage is being lost in either the wiring, the key switch, any connectors, the connector where the battery clips to the holder or inside the battery itself. If all the switches, cables and the connections look clean and good with no volts dropped in them then it points to the battery. The key turns on and off the battery...
January 30, 20206 yr Author When i measure the voltage in the battery, there are 2 cathode and two anodes +- , only one cathode and anode have got voltage. the others don't have.
January 30, 20206 yr I put the bike with wheels towards the ceiling.. Imean Does the motor work when you pedal or when you stop pedalling?
January 30, 20206 yr Author Does the motor work when you pedal or when you stop pedalling? The motor stops when i stop turning the pedal bcs i turned the bike with the seats on the floor and wheels up.
January 30, 20206 yr The motor stops when i stop turning the pedal bcs i turned the bike with the seats on the floor and wheels up. When you are using the bike on the road does the motor stop when you stop turning the pedals?
January 30, 20206 yr Author Yes, that certainly looks like your batteries are past their best and starting to go high resistance. But what do you make of Sami's report that "The thing that i can't understand is while im pedaling the battery loss power. And when i stop pedaling the power assist comes full energy again " ? Here i mean that when im riding the bike it works normally and suddenly the display indicator of the battery gets lower and lower untill it collapses.. And i have to turn the key other time so as to put power again
January 30, 20206 yr Author When you are using the bike on the road does the motor stop when you stop turning the pedals? Yes it stops, i can't here it
January 30, 20206 yr Author Yes it stops, i can't here it At that point where i can see that the display start to gain power
January 30, 20206 yr Here i mean that when im riding the bike it works normally and suddenly the display indicator of the battery gets lower and lower untill it collapses.. And i have to turn the key other time so as to put power again When you turn the key off and back on is the bike normal again for a while without charging and will it work in pedal assist Three
January 30, 20206 yr Author When you turn the key off and back on is the bike normal again for a while without charging and will it work in pedal assist Three Yes it works but shortly collapses few meters
January 30, 20206 yr At that point where i can see that the display start to gain power Do you mean that the voltage goes up or the motor speeds up?
January 30, 20206 yr Author Do you mean that the voltage goes up or the motor speeds up? Voltage goes up
January 30, 20206 yr Yes it works but shortly collapses few meters the Only thing left to check then is volts drop right at the battery terminals as described earlier, just to confirm the wiring connectors and your key switch. If the voltage drops sharply right at the battery then it sadly looks like it needs a new battery ( as suggested much earlier) if the battery voltage remains stable but the voltage after the key switch drops you have a problem with the switch. Same goes for any in line power connectors. From your description and test results thats about as far as it can go I think.
January 30, 20206 yr Author the Only thing left to check then is volts drop right at the battery terminals as described earlier, just to confirm the wiring connectors and your key switch. If the voltage drops sharply right at the battery then it sadly looks like it needs a new battery ( as suggested much earlier) if the battery voltage remains stable but the voltage after the key switch drops you have a problem with the switch. Same goes for any in line power connectors. From your description and test results thats about as far as it can go I think. Sorry i didn't get your point
January 30, 20206 yr Author Sorry i didn't get your point actually i have problem with the switch but i dont think it would be the problem
January 30, 20206 yr actually i have problem with the switch but i dont think it would be the problem What do you mean you have a problem with the switch?
January 30, 20206 yr Author What do you mean you have a problem with the switch? The place where we introduce the key, sometimes when i turned the key so as to start or to take out battery, sometimes it gets out from its place.. And i have to replace it again
Join the conversation
You are posting as a guest. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.