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I already told you, you can't use voltage to caculate range because there's a non-linear relationship between them. Instead, get a wattmeter from Ebay. They cost less than a tenner, and they give a good measurement of battery capacity, range and consumption. If you can install one where you can...

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Not enough information. You need to show which control panel you have and all the connectors and wires on you present controller - nicely spread out so that we can see every wire and connector, not in a random birds nest. If it's only the light that's not working, it would be cheaper and easier...

PVC is normal wire insulation. PTFE insulation is much thinner and very slippery. Your photo doesn't show which type you have. Is the blue wire more or less intact, or did it peal like the other two?

Start with the controller. Disconnect the motor cable. With the controller switched on and only the battery and control panel connected, confirm that you have battery voltage on the battery connector while connected, then check whether you have 5v on any of the thin reds going to the pedal...

Have you got a meter because you can't find out anything without one?

It depends on your weight, how hard you like to pedal and how steep the hills are. The Oxygen would be better for a fairly fit rider of 90kg or less with hills up to say 20%. If you're out on 2 of those, it's probably not the best choice. It's not a paticularly powerful bike - sort of average...

I doubt that there's anything wrong with the bearings. They rumble, not clack. Clacking normally has an electrical cause - something like the motor cable connector not pushed in far enough or a bad connection on the phase wwires at the controller. Tell us more about the clacking. To get the...

The markings on the connector follow international standards for wiring of mains equipment. The international standards show which pin to mark positive and order that the positive wire must be fixed to that terminal. That's so that whenever uou buy a TV, computer or anything like that, you can...

Having seen all the evidence, I'm now going to pass judgement. When you modified your connector, you caused a problem, like a short or polarity issue, so that when you connected the charger, you over-loaded it, which blew that solder joint like a fuse, so you were lucky. If it hadn't blown, the...

It's a shame you didn't come here before converting your bike, but we are where we are so we'll do our best to sort you out.

Decent suspension forks for 700c with a disc brake are pretty rare. You could look for some 29" MTB forks, but they normally have more travel, like 130mm, which will lift the front of your bike by about 2". If your bike feels a bit small for you, that could be an advantage, though there's no...

I've been working on ebikess for 11 years, and I've never seen anything like that. My first suspicion is that the motor cable was damaged either by pour routing or a cable tie pulled too tight. If you go down the wire towards the motor and stop at the last place where the wires show signs of...

If the charger doesn't provide 42v, there's no way it can charge. Whenever you get a charging problem (no charging), the first thing you do is measure the voltage on the charger's connector and on the socket in the battery. Those two measurements will tell yor where the problem lies 99.834% of...

Hmmmm! IMHO, you're missing a couple of things and what you're saying isn't quite right. If your type of gears were so X-fantastic, they'd be using them in the Tour de France, but they don't. I'm going to say that they're too clumsy, too heavy, too unreliable and make wheel removal more...

If they're not connected to anything, they have no function. The companies that make the battery cases have no idea what bikes they'll be used for or even what will be put inside the case, so they provide extra pins to give the battery-makers and e-bike manufacturers the chance to add...

I can't see anywhere where you checked the 42v charger voltage.

17v is what you can measure when the BMS is switched off. You'll get the true battery voltage by measuring the cell-pack directly. You said that you hd approx 3,6v per cell, which makes 36v overall, not 17v! Did you definitely get 10 cells with those voltages and not 9? You said it's a Hailong...

Everybody will die whether they're an anti-vaxer or not! That includes you.

I'm extremely sceptical and suspicious about everything regarding covid. So many different people and organisations have an angle on it, whatever side they're on. There's one thing in particular that I'm still puzzled about, which I haven't had a satisfactory explanation for. The UK leaders...