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Take the end-plate off (4 screws) and have a look inside. There's no need to open the whole thing until you've checked that. In most cases, the shunt is sitting there grinning at you, just waiting to be fed with a blob of solder.

Why are you being so contrary? Loads of controllers have wire shunts. Just because yours have changed doesn't mean everyone else has. Even so, I told OP how to deal with solid state shunts, which give more accurate results than soldering wire ones and is just as easy, though cost a couple of...

I've ordered a five LCD4s because I already need two. That reduces the cost per unit right down. I'll check to see if they have L parameters. If they do, I can spare one or two at around £25 each. They'll take about 2 weeks to arrive. If you're interested, send me a message after that.

In principle, that's right, but we know from actual experience gained over many years that there wouldn't be any detrimental affect from soldering his shunt a bit. I've personally run 250w ebike motors that came with 24v 12A controllers at 48v and 18 amps without anything burning or going...

The Xiongda controller is special because the motor runs much faster than a normal one. I haven't seen the KT controller for it, but I'm sure that the P1 parameter doesn't go high enough. They get round that by adding another parameter that multiplies it by 2, which is parameter L2 =1. I don't...

You need at least 50v input voltage one. The othere important thing is the current. You need to say how many watts the bulb is, then divide that by 12 to get the current, then add on at least 50% for safety. If it's an LED light, you need to post the spec because that's more complicated. Note...

You could probably go to 18 amps OK. In the old days when batteries were crappy - long before we had nice Samsung and Panasonic cells, I often increased the current to 18 or 19 amps without any problems. The increase in current has a proportional affect on torque and power. The good news is...

I think that's the difference between the Crossfire and Vulcan from the cheaper Vengeance and Subway.

I don't know where to start. You don't seem to understand that some of us have been working with these things for many years. It's true that if you live in a dry climate, where there are no hills or traffic, and yo want to travel at a constant 20 mph, those 500w Voilamart kits offer a lot, but I...

Show us a photo. It might be a standard part.

There's dutch shop that sells Suntour stuff cheaper than anywhere else. They're mentioned in a couple of threads about chargers for these Carrera bikes. Maybe they sell the batteries cheap too.

Spring washers are all you need. Most rack designs are terrible. They nearly all put the main impact loads on the welds that are the weakest point, which is completely unnecessary. They make a strong well-designed rack, then hang the battery from it on a tacked-on structure. Why don't they...

I don't think Suntour uses comma between the battery and controller unless they changed it on the latest version. The previous version used a standard Santroll controller. There was some sort of handshaking between the charger and battery. I'm fairly sure, but I would need to see it to be...

All rack fixings need to be fixed with nyloc nuts or spring washers. Sadly, most aren't.

Which controller did you buy? Neither of the two that I recommended have self-learning wires!

Why do you need one? They don't normally give problems. Do you mean the controller or the control panel?

I'm talking about your original problem. Your shutdown could be anything, but I bet when you get a new display, you can ride your bike again.

It's one thing buying and fitting a pedal sensor, but you need a controller that can deal with it. The one in that kit won't and brushed motor controllers that can are very hard to find.

Well, if you'd rather trust those reviews than independent people that have used them many times, go ahead and get one. Remember, theory is one thing, practice is something else. Do you think that having only one moving part has any bearing on how easily water gets in or how easily they burn out...

Don't change anything if it works and you're happy with it.