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Look at this this way: I need the warranty from Lishui, Bafang, Tongsheng, Shengyi, MXUS etc exactly like my customers need their warranty covered by me. We need to be quite clear where we stand in case of troubles. Tongsheng, Bafang, Mxus, Shengyi etc have EN15914 certifcates for their...

we have discussed this same subject over the years and there is still no general agreement. Kits are tolerated in the EU just as much as here, in the UK. Police over there don't stop e-bikers because they have a kit, but there are anecdotes now and then that some got fined 100 Euros for using...

It's a tongsheng label. I asked them to make for me a 48V 250W TSDZ2 with clear labelling. I asked Bafang the same, make for me a BBS01B 48V 250W with clear labelling. Bafang label is more cryptic but clear enough. They supplied it like it is. It's a lot simpler that way, everyone concerned...

I replaced years ago the pawls of a hub motor with standard bike parts. Nowadays we keep the lids of the hub motors as spares to avoid faffing about with this delicate job. As you have already removed the freehub mechanism, I would suggest you pull the pawls out, wash the mechanism and replace...

yes, same.

yes

yes, but beware that there is no standard wiring for 3-pin brake sensor with Hall. You should get the brake sensors and cable from the same supplier. we normally keep 2-pin red plug simple sensored brake levers with red plugs and 3-pin yellow plug hidden wire brake sensors with Hall and supply...

I set up a test rig this afternoon. Here are the guide to the VLCD5's battery indicator, the TSDZ2 has factory firmware. Voltage Bars State of charge Above 48V 6 50%-100% 47V-48V 5 40%-50% 46V-47V 4 30%-40% 45V-46V 3 20%-30% 44V-45V 2 10%-20% 43V-44V 1 under 10% Under 43V 0 0%...

Woosh Santana3 should fit well within your budget. Perfect for your height and upright Dutch style riding position. You can fit a Hamax child seat over the rear rack. https://wooshbikes.co.uk/?santana3

Thank you for the numbers. The first bar goes after 35% of charge used and you use 4wh per mile. I will check the LCD with lower battery voltages in the next two days.

I need to know too.

to tell the truth, I know more about Lishui controllers and Bafang motors than the TSDZ2. Andy is on holiday this week, I expect he'll need a couple of days to catch up with his intray before we can set up a test rig to figure out the way the TSDZ2 kit reacts to the battery voltage. On the...

You have already seen that the cutoff speed of the motor is directly proportional to the battery voltage, the coefficient is known as motor constant Kv. It follows that you would want to increase Kv to compensate for the drop in voltage. The way to do that is by field weakening, So I imagine...

Which version are you looking at?

as you said before, it's not a big issue because you would go out with a full battery most of the time. Still, manufacturers are naturally reticent to change the firmware for good reason, one mistake could sink the ship! If you buy your kit from abroad, then OSF is the way to go because you are...

Thank you for the detailed remarks. I will look into how to optimise the motor for a specific cadence regardless of battery voltage.

let's hope so. Whenever a new motor is introduced, there is an opportunity to improve. Some areas that have been candidates for improvement: 1. Stronger motor spindle. It rarely breaks but it's still a weak point. As the motor spins twice as fast as the BBS01, it should be as strong as the...

Simon has 48V 15AH battery with Panasonic 217000 5,000mAH cells. The first bar would start to go as you said, after around (54-1.3)V*3AH=158W, so 150WH is very much ball park figure. He managed 60 miles, that's an average 3WH per mile, which is excellent but there are two factors: 1) he still...

MFC in France: OK, got it. They are indeed a very big firm. I'll PM you later. BTW, did you design the new torque sensor for to7?

who is MFC? and are you associated with to7?