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As a 60 something I don't have neck or back pain with low bars on my cross country MTB or drops on my road bike. I do find that on a hardtail bike if I'm too upright I doo get lower back pain if the surface is rough.

I have an extender battery that I will only charge outside. The balance resistors get too hot as it approaches switch off point for the charger. This is with an as supplied together battery and charger. The charge current is simply too high (2A) for the supplied BMS to be able to cope with. I...

If you read between the lines in the recent fatal incidents it appears that relatives of the bereaved thought their bikes were legal. Selling motorbikes as bicycles is beneath contempt.

I have done some surgery and run a 385Wh extender battery. Only connect when battery voltage is v close (straight off the chargers is within 0.1v) and Yamaha battery is switched on.

Whatever you do be very careful where you stick your multimeter leads, according to the German forum you can kill your battery if you get it wrong. You would probably also not find the charging voltage without a battery connected as the charger won't switch on until communications are...

Or the display unit may not be seated correctly.

https://news.sky.com/story/cardiff-crash-two-police-officers-served-with-gross-misconduct-notices-12901731

Have you been through the troubleshooting that is in the manual (many copies online). No way would I put my battery on a suspect motor to prove which part is faulty when I could end up with a battery locked out with a fault which the motor has caused.

That's how it is here in Austria (not sure about the car / Quadricycle thing but only because I haven't looked). Where I live it is in a valley with about 3500 inhabitants across 5 villages and many outlying farms. Lots of local kids ride mopeds with very few problems though the law does allow...

Confirmed as a Sur-Ron in the BBC article now. "The Independent Office for Police Conduct (IOPC) said an investigation into the collision. It said Saul had been riding a black off-road Sur-Ron e-bike and was followed by officers along Fitzwarren Street and on to Lower Seedley Road at about 14:00...

Who do you want to make accountable? Who do yo want to charge with manslaughter?

Getting back to the original story, it seems there has been another pursuit https://www.bbc.com/news/uk-65850704

Here in Austria where it is a little bit bumpy I see loads of mainly Bosch motored bikes, numbers have exploded in the last 5 or so years. Never seen a Chinese one in the mountains but do see odd ones down by the river Inn.

I know 3 bike hire shop owners or mechanics here in Austria, all of them have 20 plus bikes for hire and one of them does service work from the shop too (they have about 50 hire bikes). Most but not all of the bikes are Bosch, some Yamaha some Shimano but all are mid engine. None of them have...

Yeah but have you seen some of the s**t they call ebikes on there ;) Of course there is a risk with any stored energy whether it is electrical or otherwise ( springs, pressure, gravity etc) but if the risks are known, understood and assessed then they can be minimised. For instance checking...

They can't get out of balance when they are connected in parallel. Individual cells can of course fail but then the protection is supplied by the BMS in the individual battery. If the capacities are different then the batteries respond by sharing the load proportionally. If one battery is 22 Ah...

Capacity has absolutely nothing to do with it, age doesn't matter. The only thing that matters is voltage. As you say there is a BMS on each battery that will restrict the current but if the voltage difference is small then very little current will flow anyway. When the batteries are straight...

Removed battery mount, soldered wires, cut a small groove in the base to get the wire outside and fitted connector. I always switch bike on before connecting the second battery as the bike is not expecting power to be available on the main connectors until powered up, probably makes no...

Stick another battery on like in parallel like I have, double your range! Comes in even handier when you start climbing more like you are threatening to. Most importantly enjoy and make the most of your new found freedom, maybe you can come and ride the Alps too.

For contrast my most worn gears are third and fourth, shows how much time I spend going up silly long hills with an average ride over 1000m of climbing. As soon as I leave home virtually every road / track goes up.