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I would personally go for the 11.6Ah battery, plus a spare. Then pop the spare into a slim back pack, so it doesn't jiggle around, and swap it when needed. They are actually surprisingly light. That way you could buy the batteries from the UK with warranty. Buying a large capacity triangle...

Justin, I admire your perseverance in replacing those hall sensors and getting it running again. When a hall needed replacing on my old MAC motor, I attempted to dig out the circuit board, but gave up and ended up buying a new motor from em3ev. But it was not all in vain. Paul sent me the...

I'm running one of those Samsung 48v 11Ah batteries on my 750w 25A. I would say that 30 miles is doable, using the lower PAS settings.

Well according to Paul at em3ev, the new controllers were being fitted to units in May 2014. Therefore, it's very likely that the one you mention is the new 9 fet.

I'm not entirely sure that's true trex. This is an excerpt from em3ev's website, which suggests that they did have a 25A 6 fet at one stage: "News - 11th Apr. 2014 The 750W BBS02 kits are temporarily out of stock. We are arranging some new stock and expect to have the 48V 500W and some other...

Ask the supplier for the date of manufacture or at least the manufacturing code, which is marked on the bottom of the unit: First two numbers are the year of manufacture and the next two are the month. This one was made in July 2013. I don't know when they permanently swapped over to the 9...

Don't take this the wrong way Gordon, but this made me giggle... a lot :p

************ Now gone to a good home ***********

Yes, I realise that it should be operating proportionally, but I have a feeling the supplier has accidently programmed the throttle incorrectly, as they had to reprogram the kits when Bafang sent them the kits incorrectly programmed. Apparently, they were meant to be sent with full throttle...

Not so much for sale, but more of a giveaway to one lucky person. I only ask for the receiver to cover the cost of the postage, which will be peanuts. PayPal preferred :) I have two brand new thumb throttles for the BBS02 kit. One is the original right handed throttle and the other is a left...

Working for me, thanks :)

Cheers Russ, this is the message I'm getting when attempting to upload, just in case you need more info for the tech guys. The following error occurred There was a problem uploading your file. 2015-05-28-032.jpg

Trying to upload a pic, it is reaching 100%, then a message says there is a problem with uploading. Anyone else having this problem today?

Isn't technology like this fascinating. I'd love to meet the boffins who think this stuff up :)

Yeah sorry flecc, you must have posted that whilst I was typing. I'm still not getting the link between this and the problems people have with the left crank loosening. A search on the net suggests that it occurs with non motorized bikes too. I was thinking, that because the pedals are more...

So, correct me if I'm wrong, to achieve the same amount of rotational torque to the chain ring, the left crank would require more force than the right crank to achieve the same amount of torque?

Yeah, me too, but I've read in a few places about the left crank problem and I just can't seem to fathom out why o_O

IIRC, the hall sensors can only be slotted into place one way round, due to the bevelled edge, so I don't think wrong orientation will be a problem.

I thought that I was fairly clued up when it came to how things worked, but still can't seem to get my head around this: " Loss of crank bolt preload is greater on left than right cranks, because left cranks transmit torque and bending simultaneously while right cranks transmit these forces...

Lovely, thanks chain :)