New Bosch Performance Line CX Gen2 (BDU 280P CX) 75Nm

wildtrak

Active Member
Region
USA
City
Morgan Hill
I have some new Bosch Performance Line CX motors, zero miles.
These are the latest ones for the small sprocket, MY20.
Great as upgrade or replacement for any Performance Line or Active Line (2014-2018) that come with the small sprocket.
They have all the features like
  • Walk assist
  • eMTB mode possible
  • Dual Battery possible
  • 6V or 12V light output
  • 75Nm torque
$450
For details regarding installation or configuration etc., just send me a PM
BDU280P CX.jpg
 
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"These are the latest ones for the small sprocket" Those would not be the latest Bosch motors.
 
@rich c Just read it right.
The latest ones FOR the small sprocket.
There were several different versions for the small sprocket.
<MY17 without walk assist etc
and so on

That's why I added all the information like Gen2 and 2014 - 2018

That motor actually is a MY20 (still Gen2), which means it has all improved updates like the 12V etc.
 
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if I had some spare money I would grab one. it would be a little improvement over the performance motor on our tandem. but the 4th gen would be the way to go.
 
if I had some spare money I would grab one. it would be a little improvement over the performance motor on our tandem. but the 4th gen would be the way to go.
The Gen4 does not fit on your Tandem.
But yes, that would be some improvement with more torque.
 
The Gen4 does not fit on your Tandem.
But yes, that would be some improvement with more torque.
Someone with the same tandem Said they updated to the gen 4 cx motor. so the mounting holes are different fro the performance motor and the gen 4 cx but maybe they misunderstood what I asked them. going from 63nm to 85 would be a big improvement on climbing on the tandem.
 
Would this replace an active line plus motor?
Not this one, but I also have Gen3 in a different post
 
Someone with the same tandem Said they updated to the gen 4 cx motor. so the mounting holes are different fro the performance motor and the gen 4 cx but maybe they misunderstood what I asked them. going from 63nm to 85 would be a big improvement on climbing on the tandem.
If you are running 63nm motor with small sprocket then these gen 2 CX 75nm motors may fit. Worth doing more research. Wildtrak should be able to give you a rough sketch of mounting bolt pattern with measurements if can't find anything on web.
 
@TrevorB It is not only a matter of the bolt pattern.
Also the chain stays. If they are too low, they are in the way of the chain.
 
I have some new Bosch Performance Line CX motors, zero miles.
These are the latest ones for the small sprocket, MY20.
Great as upgrade or replacement for any Performance Line or Active Line (2014-2018) that come with the small sprocket.
They have all the features like
  • Walk assist
  • eMTB mode possible
  • Dual Battery possible
  • 6V or 12V light output
  • 75Nm torque
$450
For details regarding installation or configuration etc., just send me a PM
View attachment 145694
Howdy!

A bit late, but do you still have one available?
 
Howdy!

A bit late, but do you still have one available?
Unfortunately not, only Gen4.
Still trying to get adapters and covers to fit the Gen4 in the Gen2 bikes. They are all BES2 and use the same cables, computers and batteries.
 
Unfortunately not, only Gen4.
Still trying to get adapters and covers to fit the Gen4 in the Gen2 bikes. They are all BES2 and use the same cables, computers and batteries.
Thanks for the quick response! I've been banging on my Gen 2 since 2017 (one repair kit installed in like 2020). Got about 10k-miles on it. I disassembled it this week after putting it off a few months when an annoying clunk began appearing when I'd begin peddaling under load when trail-riding. I imagined it might be a loose chainring (had that issue in past necessitating the repair-kit since the slots on the rings hub had worn through), but the clunk was definitely in the motor. I was happy to see that everything inside looked beand-new EXCEPT for the motor mounting bracket; the thing had fractured in two places. Also, when I disassembled the motor, two of the cover's threaded screw-holes stripped when REMOVING the nuts. Same thing happened to one of the bracket's screw-holes (damned aluminum!). Oddly enough, tge cover's two guide-pins were also sheared. I have no idea how the torque for that to happen could have occured, let alone the brackets. I helicoiled the offending holes, cleaned and re-greased the guts, and reassembled. I have a override-chip to derestrict speed-limitung, and when putting the covers on, I very stupidly put one of the cover screws through the chip's umbilical thinking the resistance was the mounting-bracket's reapplied vibration gasketing. I only realized this after getting the 503-error when taking it out for a test-ride. Seems the magnetic-sensor's lead on the umbilical was shorted. I removed the chip, buy the sensor continued to malfunction; ai freaked out a little thinking the short MIGHT have permitted over-voltage on the sensor's related hardware on the board. Long-story short (well, not as long), it turned out that the spoke-magnet was ever so slightly off, and I mean SLIGHTLY...like only a few millimeters. In the meantime, I'd already ordered a new sensor and will keep it just in case. Anyone know if it's a reed or Hall sensor? Can a Hall sensor lose sensitivity over time?

If you got here, tglhanks for reading! I'm pretty fond of my bike: we've had many memorable adventures over the years, and I'd like to keep it going for as long as I can. It's frame is hydroformed-aluminum and I suppose it's only a matter of time before a microfracture leads to failure, and I'll have to move up to a Gen 4 model! In any case, of you happen upon another batch of Gen 2 CXs, count me in! I'd like to have one on reserve.

Wear your helmets, everyone!

P.S.: attached is an image of the fractured mount (ignore the other one, it's a Gen 3 mount).

The disconnected lobe is pretty obvious, but the second larger incomplete hairline-fracture is just visible between the bolt and screw holes on the left.

84a75a8d-9161-4563-8b17-641039828912-1_all_106499.jpg
 
Anyone know if it's a reed or Hall sensor?
It is a reed sensor. I use cheap ones two of my bikes by the axle and have a magnet in the brake rotor. Especially on the tri spoke fatbike carbon wheel the stock senser would not work.

Which bike model is that from?

I have never seen that broken before, and I have seen a lot. Very interesting. I have one motor with maybe 20k miles on it, only riding in Turbo with a chip. The chip cuts the miles by 10, so it only shows something over 7k miles now. Those motors will last forever when only using Turbo.
Hard to get Gen2 Motors here in the US. I have like 40 Gen4 motors, but pretty much impossible to sell them here in the US. I guess the ebike business in the US is less than 1% of Bosch's total ebike business. Just look at Europe where you see them everywhere.

Anyway, still waiting for the adapters, then maybe some people want to upgrade their Gen2 to a Gen4.
 
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