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The sticker is about as close as you can get, so your motor should be doing something. Unless there is a problem with your second PCB. 🤷‍♂️

The numbers on the casting are nothing to do with the PCB. You need to look at the numbers on the white sticker on the side of the PCB to even get close. The terminals on the Brose pickup ring are not soldered so they can align with the pins on the PCB without being held under constant tension...

You are right, there is usually some type of reaction. However, this could also be caused if the wrong PCB has been fitted it can miss align with the pick-up posts on the stator coils. Or if the torque sensor or torque sensor pick-up have failed or been damaged electronically, this will also...

Yes, every ECU is programmed on the assembly line for the motor angle. If the ECU match's the motor type e.g. 1.2e, 1.2, 1.3, 2.1, 2.2 etc. and then matches the model C97272 or E016080 etc. Then if you match all this, you will have a 1 in 4 chance of it working. Putting random ECU's on motors is...

We are sending regular shipments to out partner company Canada and could pop a cover in there for you. Failing that our Partner in America has a lot of Gen 4's and we are also doing a shipment for him as I type. Take a picture of your cover for me and drop me a private message and I am sure we...

It states "High Pressure" so wont quite do all you need. I know you haven't used it on your clutch bearings but others might, so please be warned.

Peter here from the eBike Motor Centre, please note as stated on our site, our high success rate is with the Bosch Gen 2, a very different animal to the Gen 4. Mechanically, these motors are quite difficult to get apart without braking something, and even more difficult to put back together...

Just another word of warning. I am sure if the motor manufacturers could get away with one cheap grease to do the lot they would. But eBike manufacturers are not stupid, they can use several different greases throughout the motor, to ensure each part is using the lubricant best suited for its...

Well done for persevering! It's very unusual to have any gaps between the motor and frame, but your solution seems to have done the trick! As for gasket, there is a "damping film" (gasket) fitted to some early Bosch motors (Gen 2) but this was next to useless! Once fitted, it compressed and as...

Thanks for the heads up @Spiff , I just typed www.performancelinebearings.com and the re-direct seems to be working again now. Although we haven't been called Performance Line Bearings for 2 years now 🙂

Because there is no race inside a max bearing, if used as a radial bearing, the balls run against each other and cause significant wear and premature failure. Years ago, when the Bosch main motor bearings were failing regularly, a rumour spread through the forums that MAX bearings were the way...

Be very careful! Leave the non-drive side crankshaft circlip in place, and only remove the larger of the two circlips on the drive side. Then you can safely remove the motor cover without moving the freewheel sleeve and breaking the plastic torque sensor. 👍

Normal Bosch Gen 4 mounting brackets have smaller holes for the screws that secure the bracket to the motor. Other than that the brackets are identical. Fitting the "smart" brackets to the earlier Gen 4 would make mounting the motor a bit more difficult. And would also be difficult to stop the...

As I said, we have tons of them! Our partners probably have these brackets too!

There are 4 brackets, one short left, one short right, one long left and one long left. But as I said, there is no part number for the Gen 4, only the Gen 4 "Smart" I do not know if these parts are the same so I can't tell you whether they are suitable? I will try to find out for you.

Bosch only offer the brackets for the new BDU3 "Smart System" Gen 4 motor. Although, I'm not yet sure what the difference is, if any! If you're in the UK, just drop me an email. We have loads if you need one.

This will have badly worn the plastic bushes in the freewheel sleeve, so will create a lot of play on the chainring once it's all back together. This play will allow more water to get in between the crankshaft and freewheel sleeve. There is currently nothing you can do to stop this, or the water...

Sounds like you're getting there 👍

So it's a creak, not a click? A click can come from a lot of different areas to a creak, only seat posts, motor bolts, crank arms, spiders, chainrings, headstocks, suspension linkages and shocks, all else clicks and you can pretty much rule out. Did you try the turning your head to the side and...

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