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The Germans like to spend a lot more on these sort of things than we do, so be careful. Unless, money isn't important to you, bikes in the £1000 to £1500 range should give you everything you need. If you're on a tight budget, you can get acceptable bikes from about £650. As a general rule, the...

You can't test them like that. You can only test at the end of the cable, though at least now you don't need to turn the wheel. They should switch when you bring a magnet to them, but it needs to be oriented the right way. While you have them out, see if you can read the number on them.

Maybe you don't have enough air in your tyres, your water bottle is empty and your brake pads are worn down. Seriously though, you can often save a kg by fitting lighter tyres, and as I said in another thread, each kg saved means approx 1% less pedal effort to climb your hills at the same...

My question is why gravel bikes? An MTB is much more comfortable. Gravel bikes are a great alternatives to a road bike when you only have pedal power but when you have a motor, many of the advantages disappear. Surely, for someone with no cycling experience, a sit up and beg type bike would be...

I buy all my hydraulic brakes second hand and have done for many years - something like 20 pairs. I never had a problem with any of them. You just need to be sensible when you look at the listings. If they describe them as like new, that's what they'll be like from EBay because you're covered...

46x11 is his gearing.

Forget Zoom and Clarks, which don't seem to last. Have a look on EBay for used ones. You can often get decent ones in perfect condition for about £40 a pair. Make sure you get the right hose length. You can cut them down if you buy a new olive, but lengthening them is more complicated. If...

It doesn't add any extra power. It only releases the speed limit.

That's right. To go up the same 10% gradient in the same time, you only go 990M, so to do the same 1000m up that 10% gradient, you have to pedal 1% harder, or, if you pedalled the same, but up a 9.9% gradient, you'd make the 1000m, which is where we started.

Please show us what you find. My guess is corrosion. I did open one DD motor that had salt crystals all over the hall sensors. When I cleaned it off, they came back to life.

In case you didn't notice, the second link above, which I think you're referring to in your last post is a 1S active balancer. They cost $15 if you buy 300 of them. You need ten of them for a single battery, so that would cost $150, plus you still need a BMS to handle protection. Now look at all...

I found much the same as you with my Nuvinci. It sounds like a great idea and is sort of fun at first, but then it started to annoy me. The shifting is too stiff when under load from the motor and all shifting seems much more of a chore than trigger shifting. My cable also broke after about 300...

That's good. I have the same bell. It seems pretty good. i was just checking in case there were any better ones. I've tried hundreds of different bells. I've got a large box full of them. Some didn't even last a week. Some were loud, but people didn't hear them. Most are pathetic. This Halfords...

Speed isn't a problem for any electric bike. Slow is what damages them, so no need to feel guilty.

Before you take the motor apart, check that the wire isn't damaged anywhere from the controller to where the wire goes into the motor. I just found this from crystalyte, which says the halls switch at 13v. that means that any replacements have to be the higher voltage ones...

Never mind the bike, tell us about the bell.

4.25v is what is in the animation. I was only using that to explain to you how the bleed resistors open. In our ebike batteries, they open at around 4.2v. Yes, you're correct in your understanding that if the charger doesn’t reach 42v, it won't balance the cells properly. If it's much lower, no...

I'm only trying to help you. Transistors are electronic switches. Two legs are like the in and out connections. When you apply a voltage to the third leg, it switches on. In the case of the balancing in that animation, the electonics detects that a cell has reached 4.25v, so it sends a...

In that example, the gradient is still 10%. With the same power and 1% less mass, you will have 1% less speed, so in the same time you will cover 1% less distance and 1% less height.

That sounds like your controller is OK. The only other thing to check is that the 5v is working. You need to connect it to a battery and switch it on, then measure any of the 5v wires to ground. Check it onthe throttle or PAS because they're definitely 5v. 13v on the halls doesn’t sound right...