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I'd say you didn't adjust your derailleur properly, or, more likely, your chain was too long. Normally, you can't jump on top gear unless your chain is too long because that's where you start your adjustment from.

You're taking 50 amps out of that battery! It doesn't sound good if it's a no name unbranded cells one. Please show a link to it. Volts and Ah doesn't mean anything. We need a specification.

You can switch a KT controller between current control and speed control in the settings. Basically, you're saying that you set the speed so low that it cut the power, so you were pedalling without assistance for most of those 90 miles. You can do the same with the KT controller by selecting...

That's what I thought until I built my first wheel using Sheldon Brown's guide. I've done about 20 now, so I can do it while I watch Netflix and get them relatively true before I do the truing. The one I built last week was the first for about a year, and I forgot to underlap the spokes on...

Sounds like your controller amps is greater than what the battery can give. You have to tell us which controller and which battery you have.

The only place is in the battery listing. you should consider the continuous current as well, but the deal-breaker is the mac current or burst current. The BMS will cut when you go over the max current as a means of protection, so if your BMS allows 25 amps and you try and draw 30 amps, it'll...

The power they quote is meaningless. Your old controller is 25 amps, so you should replace it with another 25 amp controller, or higher if you want more power. Here it is from Topbikekit at 30 amps. You can turn the power down in the LCD if your battery can't handle 30 amps. Check the size and...

Those 2-stage gears are the same as used on the Q-series motors (AKM). They're not as durable or strong as single-stage gears because of the smaller diameter, which means less tooth contact and fewer teeth to spread the wear over.

There was a guy that put webs across his spokes so that the wheel would work like a windmill so that he could generate in the wind when he stopped. Then there's this:

Those torque figures are pretty well meaningless. Motors are transducers. They simply convert electrical power into mechanical power. If they give a rated torque, that's how much torque they can run at continuously without destroying themselves. With any electric particular motor, torque is...

You have to be careful what type of grease you use. Mineral based greases are generally not suited for plastic gears because it gets absorbed and makes the gears increase in size over time. you should always use grease that specifically says that it's suitable for plastic gears.

Do you remember 18 months ago the Austrian Ibizagate scandal, where two members of the Freedom party were videoed doing what appeared to be dodgy deals. According to this, all is not what it seemed...

Oh dear, Hillary's in trouble:

I edited the post while you were writing that.

Just as well you showed that. You've put the motor in upside down. The cable should exit downwards if you don't want it to fill with water. You have to take the tab washers off the axle and turn them through 180 deg, then reinstall the wheel. Don't forget the plastic cap, which will give the...

What a brilliant idea. Never run out of battery again. I was thinking about a similar idea, where I'd have a shaft running along the crossbar held by two bearings. I'd put a small propeller on the front and a big one on the rear. I'd use the motor to get up to speed, which would cause the front...

To get regen, you can't have a freewheel clutch in the motor. With a clutch, the motor doesn’t turn when you pedal without power, so it offers no resistance. Without a clutch, the motor always turns, so there is some resistance due to the magnets cogging. Anecdotally, most people who had regen...

You can get a KT controller from BMSBattery. Also look at Topbikekit, Greenbikekit and PSWpower. Assuming that you have a sensored motor, you want the one they call sine wave torque simulation controller. You have to get the LCD to go with it. You need the 12 mosfet one - S12S from BMSB. Check...

You can buy motor wheels with those motors and many others from the Chinese resellers that we regularly use: Topbikekit, BMSBattery Greenbikekit, PSWPower, etc.

Specifically, which lock?