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You'd have to hack into your LCD cable to find the red ignition wire, then you could splice a switch onto it. If you had a conventional aluminium box controller, you could splice the switch into the exposed cable inside it to avoid the hacking, but if you have something like a crank-drive with...

I've never known one to work in both directions, except the crappy ones from 15 years ago before they figured it out. Can you show us which one it is?

An average rider on a bike like OP's might average around 12 mph. His brakes are probably adequate for that. When he puts a kit on that bike and starts averaging 25 mph, he will have approximately 5 times as much kinetic energy, which will require 5 times as much braking to dissipate it...

No, that's not how to test the phase wire continuity. You check from from one wire to the next at the other end of the cable, between each pair, like green to blue, yellow to blue and yellow to green. when you've done that, you should check between each wire and the axle to make sure there isn't...

You don't need torque arms with steel forks unless you have a high power motor.

The sensor does indeed care which way the magnets go. You'll have to take of the magnet disc, then flip it to make it work in the correct direction. Some sensors are handed too, so they only work on one side, i.e. if you flip the disc, it won't work at all unless you move everything to the...

You can't do much harm by opening the battery and measuring it with a meter. Only measuring will tell you what's wrong. if you open it and take some photos, we can give a step by step guide on how to measure it.

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That only checks that the battery is connected. you have to measure the 5v to see if the controller is actually switched on.

When you get that rasping noise, the controller has lost sync with the motor. you mustn't try and run it like that because the motor draws a massive current that can do all sorts of damage. Check all your motor connections again and check that the motor cable isn't damaged, especially where it...

A new donor bike would be cheaper than two sets of hydraulic rim brakes, and disc brakes are better anyway.

The battery is a standard part. You should be able to find it on Aliexpress for about £150 to £200. Your controller is integrated in the base of the battery receiver, so to convert to a different style of battery is possible, but complicated. Note that there are three or four similar but...

R2 One end is connected to ground and the other to the empty pad H, so there's no way for electricity to go through it. Pad H is to connect the speed sensor, but the holes where the speed sensor would be fitted are empty too, and no speed sensor has ever been fitted. It's an optional part.

Get yourself a back-pack and put about 8kg of potatoes in it, then go and find a steep hill that will get you up to 40 km/h. see how well your brakes work. Kool-stop pads will make about 10% difference for the first 2 seconds, then they'll melt just the same as your present ones.

It's worth reading the reviews. You can disregard any 5 star ones from reviewers that have only ever posted one review because they're most likely fake. If a company spends massive amounts on marketing campaigns, it's nothing to arrange a load of fake reviews, but any intelligent person can spot...

OK, so you need something like a rear 500w geared cassette motor running at 48v to get what you want. You'll probably have to buy you stuff from China, either direct from the re-sellers or via Aliexpress. Your budget looks a bit tight. You could get one of those cheap direct drive motor 1000w...

There are a lot of different Crescent bikes and nearly all of them are unsuitable for a 500w or 1000w front motor. Maybe you could start by showing us what you have instead of leaving us to guess. Also, we need to know if it has free-wheel or free-hub gears, and how many.

I have been building and working on electric bikes for 10 years. I was an electric bike mechanic in a shop for 25% of that time. I can tell you that removing a front motor is not easier than a back one. It's about the same or slightly more difficult depending on whether you have lawyers lips on...

Weight helps you going down hills. On the flat, it slows down your accelleration. It's only on up-hills, no matter how slight, that the weight has an immediate effect, where the effort to maintain any speed is more or less directly proportional to mass./weight. An unassisted MTB at around 14kg...

When we fit Schwalbe Marathon Plus tyres, we don't have punctures anymore, so it's a non-issue. These tyres last most likely beyond the life of the ebike unless you do exceptionally high mileage;however, on a bike with front wheel drive, they might not last so well, especially if you have lits...