i have been using the first gen for almost 15months and its not a deal breaker. Its still a capable motor and plenty of torque. I use it for offroad singletrack riding and it’s wonderful. The video with the noise from the motor has the mic placement near the motor is not realistic. The noise gets softer with age.
Bafang M560
- Thread starter vext
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xtraman122
Well-known member
Interestingly, my 750 updated version doesn't have any such etching on the case itself, maybe that's one way you can tell old vs new. I only have the sticker. When I opened mine up there appeared to be a manufacture date stamped into one of the gears as well, but I'm not sure of a definitive way to tell from the outside. The fact that you have etching with that info where mine has none tells me that might be one of the identifying pieces. Would be good to see a known updated 500w version to confirm.
Dado
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How you found out? Should not be such high difference.
Could depends on rpms it is running (efficiency). Did you run at optimal caddence? Lot of people is riding with low caddence, then part of energy going to heat.
I do not see any major difference in consumption of M560. I am comparing with M620 and Innotrance, ride with same average power, same batteries, similar range.
I drove the same route on the M820 and M560. That was last year. I'm going to try to tune up the engines of the car and repeat the trip.
xtraman122
Well-known member
How were you calculating the amount of energy it used? I wouldn’t trust the percentages of battery level from the display if that’s how.
I will do a more accurate check this year. I have installed bluetooth bms on all my batteries
Dado
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So accurate energy consumption from BMS.
Try to set similar max power on M560 to M820.
Try same trail and get similar time. You can post then. We can calculate Wh per km.
Ride on the M820 43V and M560 (500W) 48V motor. The battery is 48V 5A. Both motors are set to 5 acceleration. M820 40% - 250W. M560 - 25% - 250W. The route is the same. The speed is about the same too. The battery on the M820 is discharged to 39V, the firmware is 43V. The battery on the M560 motor is discharged to 42V, the firmware is 48V
Dado
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Hello
Hmmm, thats quite a big difference 39 vs 42V left. Efficiency of M820, or this motor is running in higher rpms, where more loss. I can check in charts what is the difference in capacity taken, is it 5Ah battery? But that looks to me too low for 30km and 720m vertical.
Also dont getting that pictures, one has 30km, another 18.6km.
Hmmm, thats quite a big difference 39 vs 42V left. Efficiency of M820, or this motor is running in higher rpms, where more loss. I can check in charts what is the difference in capacity taken, is it 5Ah battery? But that looks to me too low for 30km and 720m vertical.
Also dont getting that pictures, one has 30km, another 18.6km.
The test was carried out on a 5A 48V battery. The average speed in the ascents was 8km h. If I could discharge the battery on the M560 to 39V. I think I would have driven 20km. But it's still a big difference.
xtraman122
Well-known member
How are you rating the wattage used, just based on the motor setting/profile? I bet the M560 being so much more powerful inadvertently draws more power in bursts or something. When it has the capability to draw a lot more I would imagine you use it without even noticing during acceleration, I really doubt the efficiency of the motors themselves is off by any more than 1-2% if they were hooked up to a dyno.
This is a subjective test for the same power and acceleration.
Dado
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I got it now 
... you went till battery died.
Indeed here is something not OK, it is too much difference.
Quick calc from your numbers and for 250W max:
10.84 Wh / km - M560
7.38 Wh / km - M820
+46% consumption
I have good measurement against M620 Innotrance (VESC controller, so lets assume has better efficiency as Bafang controllers). Same track, same power (1150W average), same time and in a finish with cca same battery left (9%). So dont see any big difference in battery consumption here. Had same range also with M600. Can not tell for M820.
As xtraman said, I would expect much less (up to 10% difference).
Xtramen, when is set 25% current (so 250W for M560 500W), controller is not going over this power, even under acceleration and heavy pedalling.
... you went till battery died.Indeed here is something not OK, it is too much difference.
Quick calc from your numbers and for 250W max:
10.84 Wh / km - M560
7.38 Wh / km - M820
+46% consumption
I have good measurement against M620 Innotrance (VESC controller, so lets assume has better efficiency as Bafang controllers). Same track, same power (1150W average), same time and in a finish with cca same battery left (9%). So dont see any big difference in battery consumption here. Had same range also with M600. Can not tell for M820.
As xtraman said, I would expect much less (up to 10% difference).
Xtramen, when is set 25% current (so 250W for M560 500W), controller is not going over this power, even under acceleration and heavy pedalling.
Maybe the first version of the M560 motor has increased consumption.I got it now
Indeed here is something not OK, it is too much difference.
Quick calc from your numbers and for 250W max:
10.84 Wh / km - M560
7.38 Wh / km - M820
+46% consumption
I have good measurement against M620 Innotrance (VESC controller, so lets assume has better efficiency as Bafang controllers). Same track, same power (1150W average), same time and in a finish with cca same battery left (9%). So dont see any big difference in battery consumption here. Had same range also with M600. Can not tell for M820.
As xtraman said, I would expect much less (up to 10% difference).
Xtramen, when is set 25% current (so 250W for M560 500W), controller is not going over this power, even under acceleration and heavy pedalling.
I have the February (no sticker) and July (new sticker) versions of m560 750W and I have already tested it on joint trips. The battery consumption with identical engine settings is the same on both. The July version is audibly quieter.
I'm convinced the people that tell you this motor is quiet, are in fact deaf. I've done just over 2000km on mine with a regrease around 1200km and the motors always screamed under full load. I have the third version motor (the so called quiet one) it screams to the point that people 100meters ahead are turning their heads to see what's coming up behind them
Dado
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Not true, with new M560, people do not turning heads and on trails I catch other riders and they dont know I am behind them. Had both, old and new, so can compare
xtraman122
Well-known member
Mine is definitely not too loud either. It’s not winning any awards for being the quietest motor, but it’s far from obnoxious and definitely not something people would be bothered to by and turning their heads to see. It’s at least a “healthy” sound, meaning it’s just the normal whirring of a motor, not the sound of grinding metal or something binding up like the original version sounded.
It's 100% true. Do you need some videos. I've had people tell me they thought I was on a motorbike as I change up thru the gears depending on how much it's screaming at me
xtraman122
Well-known member
I’m kind of surprised there isn’t a nylon gear available yet. Probably wouldn’t be a good idea for anything over 1000W, but if you’re like me and keep it peaking around 500-600W I’m sure it would hold up well. They used them in powerful M600s with pretty gold success.
All my bbshd builds had nylon gears. The last motor was on 36000km before it gained electrical gremlins. They push close to 1500w peek
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