Bafang M500/M600 Tuning & The BESST Tool

[Kyokushin]

Today I added comparison with Luna 14.6 firmware:

My observations:
- PAS1 is very nice, exactly what I needed. Current is not over 5A, usually I see 3-4A.
- Instant drivetrain stop when you stop pedaling like bafang 46.7. Like it
- Overall, i feel like less powerfull then 46.7 (maybe like 46.6?), mild and not kicky. It will be good to compare with 46.6.

Values/numbers are below. For future tests i must:

- change wheel size to match 1:1
- track range only on PAS1, or PAS0, as every fw is calculating range differently (and differently on each PAS level).

View attachment 81747

Yes 46.9 is stock and came with the motor from the factory. I'll test the other elements and get back to you.

I may be limited by my odd version of the DCP18 display. My range of watts and amps is capped visually and it does not have bluetooth.

I tested today the 46.9.
Amperage:
L1 going to ~4.6A
L5 going to ~19.6A

Battery drain on L5 seems to be similar to 14.6 and lower than 46.7

Below tests done on same exact same distance, similar weather, similar outside temperature, always from battery 100% charged.
*note my engine is M500 with controller form M600 (1st gen) 48V.
PAS mode on test ride: 5/5

fw	14.6	46.7	46.7	46.9
Batt end [%]	66	55	61	66
Avg speed [km/h]	28.6	29.6	28.2	29,6
Energy burned [kcal] (apple watch)	888	902	518	733
Distance [km]	28,2	28,2	27,99	27,68
Ride conditions	Cruising up to 42km/h	Hard ride up to 53km/h	Cruising up to 42km/h	Cruising up to 42km/h
Terrain	Flat road/brick	Flat road/brick	Flat road/brick	Flat road/brick

fyi: @mgx @Kucko @dvng @vext @patdam

 

[Kyokushin]

Interesting thing, the 14.6 firmare on L1 seems to going to 6.5A, so higher than 46.9.

Could anyone compare the 14.6 vs 46.9 and confirm findings? It seems the new 46.9 firmware have weak L1 and standard L5.

 

[mgx]

I can do it during coming week.But i can compare only 46.7 (current one i am using) and 46.9.
Luna fw was to "week and eco" for me. Dont think they change a lot.

 

[Kyokushin]

I can do it during coming week.But i can compare only 46.7 (current one i am using) and 46.9.
Luna fw was to "week and eco" for me. Dont think they change a lot.

sorry, i meant 14.6 vs 46.9.

 

[eugene8]

Hi. L1 support is set low at 100w max and the ramp up is mild. When you start on the flat in L1 you no longer get the quick support and "too much power" feeling that exists in the original 46.3. L2 at 35% max feels closer to the old L1 power with a bit more torque. For technical trails uphill the ramp up and ramp down on L2 is manageable. I have tested L4/5 on long steep uphill trails and the support is now very strong and you don't need to maintain high cadence to access that support. This modified version has addressed all the issues I raised with the original 43.6 with L1 thru 5 each having a clear role while riding. This is much closer the 14.6 FW, which I can't install on my latest bike due to boot loader incompatibility, but I can ride happily with this modified FW.

Thanks for the firmware. This is what I was looking for.

 

[clix]

Hey guys,

I tried to change the max speed limit from 25kmh to 32kmh in BESST, but I recieve the notification:

"Notice: Speed limit is set above 25Km/h. Please adjust the speed limit within the limits prescribed by local law."

I am using the account that was provided by the motor seler. My understanding is, that that acount is not permeted to change it above 25kmh. What can I do about it? If I use python script to logon, will it work then?

 

[temon10]

Hey guys,

I tried to change the max speed limit from 25kmh to 32kmh in BESST, but I recieve the notification:

"Notice: Speed limit is set above 25Km/h. Please adjust the speed limit within the limits prescribed by local law."

I am using the account that was provided by the motor seler. My understanding is, that that acount is not permeted to change it above 25kmh. What can I do about it? If I use python script to logon, will it work then?

use old besst software version, will work.

 

[clix]

use old besst software version, will work.

I tried older version 1.2.20, with dealer account, and it still doesn't work.

 

[Dado]

Then try K1 Flash.

https://forms.gle/XbEmR7tKe6hr5uur6

 

[temon10]

I tried older version 1.2.20, with dealer account, and it still doesn't work.

use phyton

 

[clix]

I managed to make it work. Python tool was needed.

 

[Dado]

If you interested in M600 firmware without power limitation (putting full power even at 10%) check K1 Flash.
Also one version with higher 20A power.

 

[patdam]

hi. i use 48V 46.9 rev on my M600 and it's too many powerfull for my use, mostly in first mode. Does it existing one software rev (EU location) with lower power and acceleration (without gap between cranks and motor stop) ?

 

[Tricz]

If you have M600 FC 3.2, I recommend software 46.3, you should be happy with it.

 

[Kyokushin]

For me te best for M600 3.2 is 46.7, but its most powerful. Lvl1 many people consider as too powerful, its good if you want pure power.

 

[patdam]

If you have M600 FC 3.2, I recommend software 46.3, you should be happy with it.

thanks, my controller rev is CRX X10N.500.FC 3.2 A18. i have tried to download CRX10NC4818i132046.3.bin. it upload in BESST tool, but not to the controler, Have you valid version to share ?

i have this error message upper the screen after download in BESST tool "et.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:132) at io.undertow.servlet.handlers"

 

[patdam]

For me te best for M600 3.2 is 46.7, but its most powerful. Lvl1 many people consider as too powerful, its good if you want pure power.

thanks. this one CRX10NC4818i132046.7.bin correctly download to my controller, tried it. But as you said it's too powerful and acceleration, it will not fit for my use

 

[patdam]

i have in my archive an rev CRX10NC4815i132020.8.bin, does somebody use it ? Quick try on road, smooth acceleration who fit for me but i don't know if enough power in high mode to the hard climb ? i will try in the week

 

[dvng]

i have in my archive an rev CRX10NC4815i132020.8.bin, does somebody use it ? Quick try on road, smooth acceleration who fit for me but i don't know if enough power in high mode to the hard climb ? i will try in the week

I used this before my M600 died. It has a milder ramp up but has a huge gap between Pas 1 & 2. Pas 2 is too much power and ramps higher. Pas 2 will gets you almost anywhere just the ramp up is too abrupt. The M560 on the other hand is so much smoother and adjustable.

 

[Dado]

thanks, my controller rev is CRX X10N.500.FC 3.2 A18. i have tried to download CRX10NC4818i132046.3.bin. it upload in BESST tool, but not to the controler, Have you valid version to share ?

i have this error message upper the screen after download in BESST tool "et.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:132) at io.undertow.servlet.handlers"

This will be some Besst bug. Just dint forget there are 2 controllers for M600, wirh sane FC number, but different version of bootloader. And firmwares are not compatible.

 

[Dado]

hi. i use 48V 46.9 rev on my M600 and it's too many powerfull for my use, mostly in first mode. Does it existing one software rev (EU location) with lower power and acceleration (without gap between cranks and motor stop) ?

What gap you see in 46.9? As what I remember it was < 500ms (which is rideable) and funny is, when low battery (under 20%), this delay can go higher.

 

[temon10]

I used this before my M600 died. It has a milder ramp up but has a huge gap between Pas 1 & 2. Pas 2 is too much power and ramps higher. Pas 2 will gets you almost anywhere just the ramp up is too abrupt. The M560 on the other hand is so much smoother and adjustable.

So U have M560? If yes tell us your review for M560.

 

[dvng]

So U have M560? If yes tell us your review for M560.

I have the review on facebook. Basically a much smoother motor and the availability to dialed down the cycling parameters is a gem. Only issue its noisy compared to the synthetic peek gear on the m600. Other than that, its a huge improvement over the M600.

 

[patdam]

I used this before my M600 died. It has a milder ramp up but has a huge gap between Pas 1 & 2. Pas 2 is too much power and ramps higher. Pas 2 will gets you almost anywhere just the ramp up is too abrupt. The M560 on the other hand is so much smoother and adjustable.

tried quickly, i don't feel the gap ?: PAS1 +- 300 W, PAS2 +- 400, PAS3 +-500, PAS4+-600, PAS5 +-700. All with smooth acceleration (may be too low at the high levels ?).
I need to perform long ride to appreciate consumtion, but this firmware seem ok for me. In any case better than M510 V1.0 who well functioning at PAS1 and 2 (E and T), but not at upper. At PAS3 (S) i don't really feel differncy with the 2 and at 4 (S+) it provide several short accelerations, but i can't keep a regular support.

 

[patdam]

What gap you see in 46.9? As what I remember it was < 500ms (which is rideable) and funny is, when low battery (under 20%), this delay can go higher.

what you whould mean by "gap" ? funny by the quick acceleration i agree. But it's not that i want, for long ride in mountain, I can't say something about less of 20% power supply, in reality i rareley go under this level.

About error message, an bafang technical said me it's because i modified the firmware name (i always shortened it) ?

 

[Dado]

Hello Patdam.

You used word "gap" between cranks and motor stop. I guess you meant delay after stop pedalling.

What for a bs is the explanation about changed name of bin file. I am also changing names (putting a behavior remarks) and I didnt get any error from Besst.

 

[dvng]

tried quickly, i don't feel the gap ?: PAS1 +- 300 W, PAS2 +- 400, PAS3 +-500, PAS4+-600, PAS5 +-700. All with smooth acceleration (may be too low at the high levels ?).
I need to perform long ride to appreciate consumtion, but this firmware seem ok for me. In any case better than M510 V1.0 who well functioning at PAS1 and 2 (E and T), but not at upper. At PAS3 (S) i don't really feel differncy with the 2 and at 4 (S+) it provide several short accelerations, but i can't keep a regular support.

You could be right. Its probably the support level between PAS which is inconsistent. From my M560, i found out that if I set the same support level for PAS 1 & 2 it produces a very linear and smooth transition.

 

[Dado]

You could be right. Its probably the support level between PAS which is inconsistent. From my M560, i found out that if I set the same support level for PAS 1 & 2 it produces a very linear and smooth transition.

This can help you to figure it out.

Support level is incline of characteristics (aka human power multiplication), max current is max current.

This is default settings for M510. PAS 1 to 3 : 140%, PAS4: 230%, PAS5: 340%
PAS1 max current 50%, PAS2 75% , PAS 3,4,5: 100%

 

[dvng]

This can help you to figure it out.

Support level is incline of characteristics (aka human power multiplication), max current is max current.

This is default settings for M510. PAS 1 to 3 : 140%
PAS1 max current 50%, PAS2 75%

View attachment 125147

I believe there should be a better way of explaining this. The curves does nothing to me

 

[Dado]

I believe there should be a better way of explaining this. The curves does nothing to me

Mate, thats your problem you can not read the graph! Nothing complicated, even basic school student would understand. On x is leg input power, on y is motor output power. I have tried to help...

And if you not ok with "human power multiplication", you would need to write to Bosch for explanation, as they using this term also!