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

[spokémon]

You can't.

there goes my theory

 

[Bengy22]

You can't.

And this is why I'm not a fan of bafang going canbus on everything, going even further to lock down flashing diffferent firmwares. There could possibly be a 48v firmware if what they claim is true, but we need some proof from them with their claims.

 

[mike_kelly]

They don't claim it is true.

 

[Lehr]

Perhaps he's implying you can stick any voltage battery on any motor? (BESST or firmware change?)
I wish this whole conversation wasn't so cryptic. I understand it could be a language issue.

different firmware，third party battery 410wh 2.4kg，720wh 3.5kg，the shopkeeper told me

 

[Lehr]

The seller also told me that the new batch of M820 is much quieter

 

[kyphosis]

Videos of noise (not mine).

Bafang M820 sound at normal cadence.

www.youtube.com

Bafang M820 sound on High Cadence.

www.youtube.com

 

[mike_kelly]

Sounds fine to me.

 

[mike_kelly]

And this is why I'm not a fan of bafang going canbus on everything, going even further to lock down flashing diffferent firmwares. There could possibly be a 48v firmware if what they claim is true, but we need some proof from them with their claims.

I much prefer canbus. Canbus is more reliable and less noisy that serial connections.

 

[Myalteregohamish]

Videos of noise (not mine).

Bafang M820 sound at normal cadence.

www.youtube.com

Bafang M820 sound on High Cadence.

www.youtube.com

It sounds fine to me too especially the low cadence one. Thank you btw.

 

[mike_kelly]

I found this instruction manual for the button Bafang SP E170/171.can

BAFANG DP E171.CAN Display Drive System Owner's Manual

BAFANG DP E171.CAN Display Drive System Owner's Manual

device.report

 

[Kenk3589]

Anyone know if there is a physical difference between the dp 180 and 181 ? I was told they would replace it if it was a 180 as it was intended to be a 181

 

[stuff]

Anyone know if there is a physical difference between the dp 180 and 181 ? I was told they would replace it if it was a 180 as it was intended to be a 181

Bluetooth on the 181. Only difference

 

[mike_kelly]

Bluetooth on the 181. Only difference

Which is potentially valuable because if you ever decide to use Besst to program it you don't need a cable.

 

[mike_kelly]

https://aliexpress.ru/item/1005004956955319.html?spm=a2g2w.productlist.0.0.692a4aa6WMh0UG&sku_id=12000031150612432

A very necessary detail.

@LAnton Thank you I understand now!

 

[mike_kelly]

@stuff Did you ever try to get the "Rocket" mode to work. Tapping the arrow while in boost to make it add power for a moment?

 

[temon10]

Videos of noise (not mine).

Bafang M820 sound at normal cadence.

www.youtube.com

Bafang M820 sound on High Cadence.

www.youtube.com

It is my video btw. I posted to M820 thread.

 

[spokémon]

Bluetooth on the 181. Only difference

Which is potentially valuable because if you ever decide to use Besst to program it you don't need a cable.

Also If you ever need/want to use the New Bafang Go+ App it needs bluetooth. Can anyone confirm the app works on M820?

 

[LAnton]

Also If you ever need/want to use the New Bafang Go+ App it needs bluetooth. Can anyone confirm the app works on M820?

Currently not working

 

[thaeber]

The seller also told me that the new batch of M820 is much quieter

There is a new batch already? Any info on differences? Hardware / Controller/ Firmware?

 

[stuff]

@stuff Did you ever try to get the "Rocket" mode to work. Tapping the arrow while in boost to make it add power for a moment?

nope, well really didn't even tried it

 

[forsa355]

Which is potentially valuable because if you ever decide to use Besst to program it you don't need a cable.

I've never used Besst, but does this mean if you have a DP181 or other bluetooth display you could use the Besst program without a physical/proprietary cable? i.e. connect to the motor for programming completely wirelessly

 

[mike_kelly]

AS far as I know that is the only purpose of having the bluetooth version of the display.

 

[brbr]

AS far as I know that is the only purpose of having the bluetooth version of the display.

I thought it was the possibility to use the bafang go+ app?

 

[mike_kelly]

Someone will have to try and see.

 

[temon10]

I thought it was the possibility to use the bafang go+ app?

For now it's not work.

 

[temon10]

Now we can do Torque Sensor Calibration on M820, on other M series we can't.

Bafang M820 can do Torque Sensor Calibration with Besst Tools.

youtube.com

 

[temon10]

Second long test ride after few changes.
1. Rearshock change from DPX2 to DPS
2. Handlebar change from Renthal Carbon with Stem to Kocevlo Direct Mount Carbon
Quite a bit to reduce the weight to exact 20kg from 20.35kg.

Today I ride with my friend using my E10 M510 FC 2.0 motor (with 769Wh) to compare the range. Ride about 57km with 1250m elevation gain.
- CEF50 with M820 73% battery left
- E10 with M510 FC 2.0 75% battery left

I feel more stable and planted when downhill with CEF50. Also Rearshock feel more plush and softer. Climbing uphill feel like the same with M510, I think because of lighter weight (almost 5kg different). I also notice my body get less fatigue than riding M510, I don't know because of the lighter weight of the bike or because of the geometry.

 

[Kenk3589]

Issue with frame.. the hardware in my hand is a 22.2. It fits the top shock mount but does not fit the bottom shock mount. Anyone else having this issue?

 

[temon10]

Issue with frame.. the hardware in my hand is a 22.2. It fits the top shock mount but does not fit the bottom shock mount. Anyone else having this issue?

View attachment 116026

I think the bottom using 22. Just grind it until it fitted.

 

[LAnton]

Issue with frame.. the hardware in my hand is a 22.2. It fits the top shock mount but does not fit the bottom shock mount. Anyone else having this issue?

View attachment 116026

I have no such problems. Remove the paint from the frame.