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This was a motor that just kept giving!! After overhauling your motor Bones, we popped it into our test bike and it still whined!:mad: This can only mean one thing, the top armature bearing had failed. This is extremely rare, but it's also the only, currently, unchangeable bearing in the whole...

This is normally caused by rust (corrosion) coming out of the bearing.

If you're in Wiltshire UK, you're welcome to pop over and we'll take a look.

That was a clean one, we see a lot worse!

Have PM'd you @Bones 👍

I think you sent your motor to us in the nick of time Bones! I hope you don't mind us sharing our findings on the forum, but I think those on this thread will find it interesting. You reported your motor had a slight whine, but apart from that, felt good. This is a very typical and common...

As stated above, all will be revealed soon. I can tell you that the reason for failure on this motor is quite interesting. I will do a full post as soon as we are ready with our stock, part numbering, pricing etc.

Don't lose faith just yet, they're not all this bad! There are thousands of people out there riding around on high mileage motors and no problems at all 👍

Just in case you didn't realise, I am Peter, owner of the eBike Motor Centre 🙂. Sorry, we didn't realise you were an EMTB Forum member when you called. We do have a few parts put by for special people ;)

No problem, just send it in and we'll give it the once over and upgrade.

Have sent a PM.

This does happen, because Bosch decided to move the plugs from the dry protected environment at the top of the motor (as on the Gen 2), to the wet mud packed underbelly at the bottom of the motor. However, this only tends to cause corrosion damage to the pins, and does not usually physically...

Although it is not impossible that this noise is coming from the motor, it is normally unlikely. Most components inside the motor rotate at a different speed to the pedals, so the only thing inside the motor that revolves at the same speed as the pedals is the crankshaft. Everything else is...

Yes, Bosch could do this if they wanted. Brose already support us to this extent, hence the reason we can repair any issue with any Brose motor. Unfortunately, Brose are the only manufacturer so far that see the benefit and true sustainability of this service. Last year I had a long meeting with...

This was true for the older motors. The Gen 2 Bosch for example, used what was called a Bosch I-bolt for its torque sensor. This I-bolt was used in cars to sense the amount of weight on the passenger seat to decide if it was safe to deploy the passenger airbag or not. These were great and never...

eBike motors have been put in an exempt category. This means, there is no right to repair and they cannot be forced to support people like me :rolleyes:

Agreed, although I have written a lot on this forum regards seals, friction and battery range. Nothing is possible without compromise. But, things are changing slowly, and some manufacturers are even warming towards the thought of sustainable eBike motor repair too!

Several motors do have a one way membrane fitted, that allows for internal drying. This does not solve the issue because for water to get into the motor, it must first go through the bearings and this is already the beginning of the end for the bearing. As soon as the water is in their, it...

Please don't buy a torque sensor. Unless these get damaged on removal or wet, they rarely give issues. Although they are very misunderstood. There are 73 different code 500's, although you have not stated the next three digits, none of them are torque sensor related I'm sorry to say. If you can...