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I have the luxury of working from a big log cabin at the side of my house on the edge of the New Forest. Hence, The Bike Cabin :) Kettle's always on ;)

Every day I am working on these motors, not just Bosch but we now do Brose, Yamaha, Impulse, Panasonic etc. And they all generally suffer the same issues. Water taking out the bearings. One thing I can assure you all, the bearings themselves in all these motors, are all of excellent quality.

Update! Performance Line Bearings started off with the Bosch motor but I have spent the last 6 months investigating, photographing, sourcing and manufacturing the bearings, O-rings, seals and belts for Brose, Yamaha, Impulse and Panasonic ebike motors. We are adding motors, how to pages, videos...

Hi Rob, I have all the bearings for your motor here, I also have a brand new spare Panasonic motor if you need one? Just drop me an email if I can be of any help. Pete.

Hi Paul, Happy to have a look at it for you. I can fit your motor to my test rig, this will rule out any issues with your wiring, controller and battery. If the motor does the same thing on my rig, then I can check and inspect the wiring connections at and inside the motor and circuit board. I...

Sadly, the mileage for this motor was unknown. Each and every one of the motors I take apart look different inside and it has very little to do with mileage. It's the conditions they ride in or the way they have been washed, stored or transported. A motor with 300 miles on it can look totally...

Thanks Chris, I'm looking into it :confused:

This is a tricky question? None of them are particularly easy. Some motors, like the Yamaha, Impulse and Panasonic, all come apart quite easy but some of the blind bearings and clutch bearing are a bit of a nightmare to change! The Bosch is a bit more fiddly and a lot more bearings but once you...

After starting with the Bosch motors we have just completed a Yamaha PW motor strip and overhaul. And, I have finally sourced the grooved bearings, seals and O-rings, now all available on my site. We are currently working on the Impulse-2, Panasonic and Brose. Much more content will be added...

Good question Warwick, but, what is "normal conditions"? To be honest there are so many variables from road bike to mountain bike. from how you maintain your bike, how you clean your bike etc. etc. I answer a lot of these questions here. It's worth a read because you shouldn't be scared of the...

Having read all the posts on this thread and many more like them, I thought I might add a little insight as someone who strips and repairs these motors on a daily basis. The Bosch seal for the main motor bearing does go some way to stopping water and dust entering this bearing, but you must...

Nice to see someone standing up for the Bosch motor. I have seen inside most ebike motors now, and the Bosch is definitely very well made, with top spec components too. Yes, the bearings fail if they get a really good soaking, but so do all the other motors out there (hopefully the new IP56...

Thank you for your support guys, it really helps. Business could definitely be better but we are still investing a huge amount of time effort and of course cash into this. I have just finished a full overhaul video of the Yamaha PW-X motor and will be posting it as soon as possible. I have also...

Performance Line Bearings are looking for partners world wide to help supply a much needed service for customers with ebike motors without warranty. As you’re probably aware, many ebike motors are now coming to the end or already out of warranty. We are offering a solution for your customers...

As a relative newbie on this site, I thought I would introduce myself properly and say a bit about what I do and why I did it! A few months ago I had a crankshaft bearing fail on my Bosch motor. No problem I thought, as it's out of warranty, I'll strip it down and buy a new bearing. Turned out...