SZZS specific CEF50-main thread (initial builds and troubleshooting related only)

[Ktronik]

This is what the app can do according to Bafang.
"

1. APP wireless long-distance/close-range control of the vehicle, accurate positioning of the trajectory, real-time push notification of anti-theft information.
2. Redefine the user's riding experience, add functions such as cycling communities and rankings, and increase user stickiness.
3. Users can analyze and troubleshoot vehicle problems by themselves through the APP, or contact the platform store for after-sales service. Improve user experience and reduce operating costs.
4. Platform big data analysis to achieve precise marketing management."

Does that c
Increasing the user stickiness sounds a little scary to me.

wow, all the things we really need, I was worried about my rankings and lack of stickiness!!

 

[sandnap]

This is what the app can do according to Bafang.
"

1. APP wireless long-distance/close-range control of the vehicle, accurate positioning of the trajectory, real-time push notification of anti-theft information.
2. Redefine the user's riding experience, add functions such as cycling communities and rankings, and increase user stickiness.
3. Users can analyze and troubleshoot vehicle problems by themselves through the APP, or contact the platform store for after-sales service. Improve user experience and reduce operating costs.
4. Platform big data analysis to achieve precise marketing management."

Does that clear it up?
Increasing the user stickiness sounds a little scary to me.

I'll pass on the stickiness

 

[Freda]

But Go+ works as long as you dont update firmware?

I have 48V version and I updated the firmware via GO+. It was Jim from LightCarbon that sent my motor ID to Bafang so I get 48V firmware. Previously I only got 36V version.

You can check for new firmware in GO+ and before updating you will see the firmware name, it tells you for what voltage it is. This is a screenshot of the wrong update file I had before Jim fixed it:

 

[Ktronik]

I have 48V version and I updated the firmware via GO+. It was Jim from LightCarbon that sent my motor ID to Bafang so I get 48V firmware. Previously I only got 36V version.

You can check for new firmware in GO+ and before updating you will see the firmware name, it tells you for what voltage it is. This is a screenshot of the wrong update file I had before Jim fixed it:

View attachment 134049

great, thx again for the help, I really don't want to brick it the first day....

 

[brbr]

So my motor died today. The torque sensor has been in an out over the last couple of weeks but it seems that it’s decided it’s had enough today. Anybody else had an issue with their motor where it’s sensing torque inconsistently and either doesn’t produce power at all or inconsistently. Either way it’s not producing any power now.

Have you been able to get a replacement torque sensor ?
It seems since 2 or 3 rides, I have some torque issues, suddenly I have less power while on boost... that's weird. The motor have only 500km

 

[Myalteregohamish]

Do u use bafang besst to diagnose the problem? I use bafang besst with crack log in.

I contacted Linda and she asked for a video and phot of the serial. She returns to work on the 19th.

 

[Myalteregohamish]

Do u use bafang besst to diagnose the problem? I use bafang besst with crack log in.

No my harness is up at the other house.

 

[Myalteregohamish]

Have you been able to get a replacement torque sensor ?
It seems since 2 or 3 rides, I have some torque issues, suddenly I have less power while on boost... that's weird. The motor have only 500km

That sounds similar to mine until it stopped all together. That said, there were times when I would get spikes or peaks of power output when it was acting sporadical.

 

[brbr]

That sounds similar to mine until it stopped all together. That said, there were times when I would get spikes or peaks of power output when it was acting sporadical.

I will try to monitor how things are going during the next rides

 

[92se-r]

I will try to monitor how things are going during the next rides

I hope this isnt a sign of a design issue.

 

[calvintys]

Can it be overheat issue? That why big brand limit it to 50nm.

 

[92se-r]

For those of you with the torque sensor issues, were they all 36v models?

Overheat issue should have a time and effort component to it though. One of the guys doesnt work at all right now, thats not thermal protection.

 

[CarolinaCrawler]

I know @Zimmerframe has experience with GO+, maybe he can chime in and tell us what all it’s able to do.

 

[Myalteregohamish]

the motor doesn't feel like its putting the power out to match the rider input,

Can it be overheat issue? That why big brand limit it to 50nm.

Maybe it does get hot but I noticed also that some of the gasket was squeezing out of the side of the motor. When I checked the bolts one of them near the gasket bulge was loose. So I don’t know if it also got contaminated.

 

[Myalteregohamish]

For those of you with the torque sensor issues, were they all 36v models?

Overheat issue should have a time and effort component to it though. One of the guys doesnt work at all right now, thats not thermal protection.

Mine is a 36v

 

[92se-r]

Mine is a 36v

Does it give you any boost? Or completely not work? Any error codes?

 

[Myalteregohamish]

Does it give you any boost? Or completely not work? Any error codes?

The last time I rode it, it started to the cut out after about a few seconds then less and less till nothing. Unplugged everything put it all back together. Same thing. It was almost like a momentary short in the system. Like a loose wire.

 

[92se-r]

The last time I rode it, it started to the cut out after about a few seconds then less and less till nothing. Unplugged everything put it all back together. Same thing. It was almost like a momentary short in the system. Like a loose wire.

So it works for a few seconds and stops? Once you leave it off for a bit, it allows you to go for a few seconds again before it stops?

 

[patdam]

For those of you with the torque sensor issues, were they all 36v models?

Overheat issue should have a time and effort component to it though. One of the guys doesnt work at all right now, thats not thermal protection.

No. mine is in 48V. happy to read that other people have problems of power variations. I was wondering if I wasn't the problem. everybody have asked to linda ? if several request, may be it will be more easy to have support from bafang.


Those said, i need to say that in my last exit i had less problem.

I have upload 4812-road software, set help 50% in trail, 80% in speed, 90% in speed+, 100% in boost and aceleration at 5 (before 2). And i had power variations only on speed+ on one short hard climb (25%). it was not necessary to keep upper than 80 rpm to have efficient help (in opposit of the previous revision 4809-mtb) and the exit as been very pleasure. always with lower consumtion: 21% for 31 km with 950 m +, mostly i trail/speed, very few in speed+, never in boost. May be also myself was more strong physically (last exit was after i was sick) ? in any case very different from previous uses.

 

[calvintys]

Those who has access to bafang Besst, be careful on setting top speed. I download Bafang Besst pro n play around, my top speed has been reduced to 25kmh. To get back 45kmh i download besst 1.2.20 from github

 

[calvintys]

No. mine is in 48V. happy to read that other people have problems of power variations. I was wondering if I wasn't the problem. everybody have asked to linda ? if several request, may be it will be more easy to have support from bafang.


Those said, i need to say that in my last exit i had less problem.

I have upload 4812-road software, set help 50% in trail, 80% in speed, 90% in speed+, 100% in boost and aceleration at 5 (before 2). And i had power variations only on speed+ on one short hard climb (25%). it was not necessary to keep upper than 80 rpm to have efficient help (in opposit of the previous revision 4809-mtb) and the exit as been very pleasure. always with lower consumtion: 21% for 31 km with 950 m +, mostly i trail/speed, very few in speed+, never in boost. May be also myself was more strong physically (last exit was after i was sick) ? in any case very different from previous uses.

What chainring size are u using, i am using 34T and found out was a little small to achieve 40kmh on S+, thinking of using 36T.

 

[patdam]

What chainring size are u using, i am using 34T and found out was a little small to achieve 40kmh on S+, thinking of using 36T.

i have 32T front and 11/52 rear. I don't take care of max speed (25 km/h is enough for me), i will appreciate if i could mount 28 front but impossible with original star in 104BCD

 

[92se-r]

No. mine is in 48V. happy to read that other people have problems of power variations. I was wondering if I wasn't the problem. everybody have asked to linda ? if several request, may be it will be more easy to have support from bafang.


Those said, i need to say that in my last exit i had less problem.

I have upload 4812-road software, set help 50% in trail, 80% in speed, 90% in speed+, 100% in boost and aceleration at 5 (before 2). And i had power variations only on speed+ on one short hard climb (25%). it was not necessary to keep upper than 80 rpm to have efficient help (in opposit of the previous revision 4809-mtb) and the exit as been very pleasure. always with lower consumtion: 21% for 31 km with 950 m +, mostly i trail/speed, very few in speed+, never in boost. May be also myself was more strong physically (last exit was after i was sick) ? in any case very different from previous uses.

Wow this does sound like a thermal issue. I thought people were having it stop working completely. Can you limit peak power in the Go app?

 

[calvintys]

Wow this does sound like a thermal issue. I thought people were having it stop working completely. Can you limit peak power in the Go app?

You dont need to limit the power, just dont use the boost too much. The boost it mean to be activate for few seconds only.

 

[92se-r]

You dont need to limit the power, just dont use the boost too much. The boost it mean to be activate for few seconds only.

People are having power variations not in Boost it seems like

 

[92se-r]

Do you guys have pics of m820 taken apart, especially with motor driver?

 

[patdam]

Wow this does sound like a thermal issue. I thought people were having it stop working completely. Can you limit peak power in the Go app?

i don't use go app, only BESST tool. Yes it's seem thermal regulation and it's the bafang explanation. BUT, motor is cold at hand contact and consumption is very low and why one day lot off variation and other no on the same track ?

 

[Ktronik]

i don't use go app, only BESST tool. Yes it's seem thermal regulation and it's the bafang explanation. BUT, motor is cold at hand contact and consumption is very low and why one day lot off variation and other no on the same track ?

a cold motor can also mean 'no thermal path to cool correctly', and thus, overheating on the inside... it does not necessarily mean it is not over heating.. also can we assume some are having the issue, that have not flashed new firmware, this then counts out firmware issues and gets us one step closer to the issue at hand

 

[92se-r]

a cold motor can also mean 'no thermal path to cool correctly', and thus, overheating on the inside... it does not necessarily mean it is not over heating.. also can we assume some are having the issue, that have not flashed new firmware, this then counts out firmware issues and gets us one step closer to the issue at hand

Can you explain what that means cold motor has no thermal path to cool correctly? Seems like that violates the laws of physics

 

[Ktronik]

sure, air is mostly a insulator, and on the TSDz2 motor, they found that there was a poor 'thermal path' for the heat to travel to the outside, as the hot bits, did not connect to the metal case well, in this case, the parts of the motor were over heating, as it could not dissapte the heat well, in the case of the TSDz2, it would thermal regulate its self.
After heatsinking pads was added. that came in contact with the case, the issue was fixed, not saying this is happening, just it might still be a possablity till we it count out.