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Schwalbe City Jets are really fast, but you can expect a lot of punctures. If you don't want punctures, there's only one, marathon Plus. A 28mm wide one would probably be the best compromise between speed and grip.

Yes, you can get adapters to convert through axle to QR as long as the width is the same. The problem is that more often they're not. I hope you're lucky. According to the spec, the new hub is 148mm wide. I'm pretty sure that your old one is 135mm. It might be worth trying it in the frame to...

48V will give 33% more torque and speed. The motor won't have any problem with that. Some 36v controllers can handle 48v and some can't. Controllers don't cost much compared with a battery, so it's always worth upgrading at the same time. Your 36v controller will cut off at 31V when the...

I can add a bit to that. It takes approximately 250w to drive an MTB type bike at 25 km/h on a flat road. At that speed, complete system efficiency will be around 70%, so we can say 357 watts from the battery. With a half-empty battery, voltage would be around 36V, so current would be 9.9 amps...

No, Greenedge were different. I seem to remember Edge bikes too. They had a range of bikes and lots of banners on the forum - about a year ago.

You're getting current, power and energy mixed up. As a motor speeds up, current goes down because the back emf is proportional to its speed. At zero rpm, the whole battery voltage is available to the motor to push current through it. At 50% of its max speed, only half the battery voltage is...

"Despite this we are proud of the fact that we did manage to exchange every single one of those customers motors ourselves and over the years kept the majority of customers on the road." I had to replace one of those motors myself because 50C completely washed their hands of the matter. I spoke...

Maybe they need to help a few more old ladies across the road or be a bit more generous to their financially poor customers, then divine providence might shine on them and prevent all this.

That's pretty good - in fact nearly as good as mine. I found that if I turn down the power a bit further and pedal a bit harder to compensate, I never have to charge my battery. This must be the best electric bike ever. It's a bit harder to pedal up hills like that, but it's made me a lot...

OK. The 7 speed DNP is the one you want then. Does your bike already have one? I know they supplied them with some motors. Count the teeth on the smallest cog. 11T is DNP, 14T is crap.

There are all sorts of problems wiring your own lights into ebike systems, especially if you want to use a provided switched lights connector. It's very easy to overload the switching transistor, which is generally only designed for crappy low power lights. If that transistor blows, there can be...

The Swytch kit is basically a normal Chinese electrical system with the controller and battery in a bag that can be removed thanks to a fancy connector. There were problems with that connector. The lighter weight of the new battery would probably improve that, though by now, they must have...

A geared hub is a hub with a fixed reduction ratio inside. The Bafang BPM has 5:1. That gives a 5 times torque multiplier to the motor, which is why this motor, though a bit smaller than your present one, can winch you up hills much better. geared motors nearly always have a clutch as well...

Yes, but 60 ml per wheel is 120 ml, which weighs 0.12 kg, After 10 months, you've added 1.2kg. After three years, it's 4.32 kg!

You buy whatever bike you want that you can afford, with consideration of how it's going to get fixed when it goes wrong, which will happen sooner or later. For road and trails, all electric bikes work pretty well. You don't need to spend anything like that money to get a nice bike that does...

I'm thinking about how many kilograms of slime are in your wheels after 1 bottle every three months.

How much do your wheels weigh now then?

You can get a small engineering firm to knock you up a couple of adapters. If you give them the bearing and motor, they can make the O/D and I/D to match. That's what I did. I added a thin flange to mine to protect the carbon fibre frame and to give a more positive location. You can also add a...

Your bearing isn't in properly on the left side. It should be flush like it is on the other side.

I had six pinch flats at once on my road bike when I got run into a pothole by a family of about 10 coming the other way and not looking where they were going. The longest pair of slits were nearly 1 cm long, the next two about 5mm and the last pair just pin-pricks. All were repaired at the side...