Bosch Drive Unit Service Kit - Maintenance BDU2XX

[wildtrak]

Join me "Across the Caspian SEA" ))))))) this is my idea !)

I would love to do that. Unfortunately stuck here for some more years.

Or make complete overhaul ! ( all bearing ) before the trip !

No need if the motor still runs smoothly.

80.000km no Gen 2 motor issues!! UNBELIVABLE!

You see motors with over 50.000km in Germany every now and then.
And those motors like to be run in Turbo. That makes them last very long.
If you pedal a lot with no or low assistance, you might break it. Done that with 3 or 4 motors. Going only high assistance now as I have plenty of batteries.

Speaking of batteries, make sure your batteries are okay. They are more likely to fail after that mileage.
You can see the age of your batteries in their serial number.

 

[Dima]

Go with the Service Kit, not the bearing set.

You will need special tools to replace the motor or the service kit.
Also, the spare motor should be configured right if you get one and your bike has the Rohloff or Enviolo. Cannot see that on the picture.
Here is what I would do:

Get a spare motor, make sure it is configured correctly. Leave it at a friends place and have it shipped in case you need it.​

or​

Bring the Service Kit and tools on the trip. Make sure you know how to install it. It is not that easy if you do it for the first time.​

​

I would go with the latter option and start the trip with the motor as is. Make sure you have the right tools. There are youtube videos about how to install the service kit.
I have seen another guy going all the way to Asia, over 80.000km with no Gen 2 motor issues.

BTW, I have a spare motor in my trailer to give it an extra boot on steep uphills
View attachment 202675

me ! without the carriage ! ) and maybe the tent will be replaced ! ) also two bags on in front ( but this trip was only 180 km ) so i put it off . My inst "koganovski" )

 

[Dima]

I would love to do that. Unfortunately stuck here for some more years.


No need if the motor still runs smoothly.


You see motors with over 50.000km in Germany every now and then.
And those motors like to be run in Turbo. That makes them last very long.
If you pedal a lot with no or low assistance, you might break it. Done that with 3 or 4 motors. Going only high assistance now as I have plenty of batteries.

Speaking of batteries, make sure your batteries are okay. They are more likely to fail after that mileage.
You can see the age of your batteries in their serial number.

i use all mods ! ) Turbo - rare case ! ) but you are right more often i had tried to cycle without assistance ! ) thank you for the info about importance to use assistance !

 

[Dima]

I would love to do that. Unfortunately stuck here for some more years.


No need if the motor still runs smoothly.


You see motors with over 50.000km in Germany every now and then.
And those motors like to be run in Turbo. That makes them last very long.
If you pedal a lot with no or low assistance, you might break it. Done that with 3 or 4 motors. Going only high assistance now as I have plenty of batteries.

Speaking of batteries, make sure your batteries are okay. They are more likely to fail after that mileage.
You can see the age of your batteries in their serial number.

but why do the like to be in turbo ? ( from the mechanical point pf view ) ?

 

[wildtrak]

but why do the like to be in turbo ? ( from the mechanical point pf view ) ?

For that I would have to go deeper into the details of the internal gears of the motor.
High torque input on the cranks from the rider is something these motors don't like. They just love Turbo.
If you need to save battery on some trips, use it on uphills and ride the flat sections with no assistance. Avoid pushing it too hard uphill with no assistance. Mabye get a lower gear ratio.

More here:

Performance Motor Innenleben - so sollte es eigentlich nicht aussehen :-O - sonstige(s)

Viele von Euch können sich bestimmt noch an meine Aussage von vor über zwei Jahren erinnern: heute musste ich mal einen neuen Motor öffnen (nicht wegen eines Problems, sondern ich musste es einfach tun). Nun war es aber an der Zeit, dass ein anderer Motor wirklich mal geöffnet werden musste...

www.pedelecforum.de

But these motors can handle even increased motor power which you can get by altering some resistors on the internal motor PCB.

 

[Stefan Mikes]

"Across the Caspian SEA"

Will it be across or around?

 

[stompandgo]

If the drive unit is functioning well, is strong, doesn't leak, or make any noises, I'd leave it alone. In racing, you make no major changes before an important event. I'd do the same for a long trip.