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Hey, Offering my new BBSHD up to my frame and my chain line is in line with the 3rd smallest cassette gear of 11. I can improve this a bit by dremmeling a couple of MM of the back of the main gear casing, see the area marked with pencil lines below. I could do with that couple of mm the other...

Update: I've got one for £439 inclusive and pretty pleased with that. Ordered from someone with 67% feedback on amazon market place. Was based in China bit it was sent from a warehouse in Germany via dhl and parcel force. Only took 5 days to get here from ordering. No tax or handling charges to...

Yes, whilst I can select to have it delivered from the UK warehouse, I should deliberately not do this?? "Greenergy Purchase Tips For EU customers : If you choose ship from China to make new order , the tax or duty will be reduce automatically when you arrange payment , it is paid by sellers...

Thanks pswpower do have the 52v version... Is it still the case that this causes problems with the display when run on 48v or are the displays (500c) configurable these days? As I dont have a battery yet, this is probably ok for me but I'm conscious that my bike is going to be way overpowered...

Seems pswpower are out of stock in their UK warehouse. Cheap and trustworthy!

Looks like the 500c might be right for me. Any downsides?

I see pswpower offer no less than 8 different displays for the bafang bbshd. How do you go about choosing one?? I id rather something small and discreet than something that looks like an iPhone. Dont want a touchscreen as cycle with gloves. What’s the purpose of Bluetooth? Are any clear...

This arrived today: This is how it looks: It would need about 6mm of spacer on the chain side, which means not enough thread on the clamp nut side. I could shave 5mm off the bottom bracket face to improve that. I think the options are: A. Shave a mm or two off the chainstay and a mm off...

Found a nice site lastnight that has printable templates for the bafang units. They have a video on chainstay intrusion and the example frame is almost identical to ours. Their solution is to fit the 1000w bbshd. I’ve printed the template and sure enough it does fit better than the bbs02 or the...

Thanks guys, has taken me ages to reply because no electricity yesterday and still no broadband today! Anyway gave me plenty of time to make a cardboard template based on Matthew’s measurements. Its a 73mm bottom bracket and as pictured above there wouldn’t be enough thread to get the nut on...

Sorry for the confusion, they're not arrows pointing at the chainwheel, the measurements I'm after are the thicknesses of the motor gear housing (directly above the blue lines), so the thickness with and without the chamfer. That gives me all I need to fully draw it to scale. Thank you for your...

any chance you could measure the two blue measurements marked above? Thank you!

Hmmm, doing a bit more googling for pictures of the tongsheng I think they’ve changed the design and older ones matched the drawing. Can’t find any drawings for the newer style so will modify one using Matthews measurements.

Ive printed the engineering drawings of both the bafang and the tongsheng and scaled them until the marked up measurements match. What is annoying is the tongsheng drawing doesn’t seem to be accurate, in particular the critical chamfer to the gear housing is not shown and is instead a simple...

Thank you very much! I will get that drawn up and cut out of cardboard! One more question, what is the length of the cylinder that goes through the bottom bracket both with and without the threaded portion? And (in other words) what is the maximum thickness spacer you could put between the gear...

I’m building a mid drive ebike as a project with my 14 year old son. I’m concerned that the rear chain stays are quite wide on our frame and may foul on the outer gear housing. I’ve looked at the engineering drawings for tongsheng and bafang units but they don’t show all the measurements and...