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You've obviously never used one. All road bike hydraulic brakes operate like that, and I've been using these on my bikes for 15 years with zero problems. Shifting is much easier than with a thumb shifter and you never accidentally pull the brake or shifter when you want the other. That's...

Use a buck converter to step up the voltage from 12v to say 50v, then feed that into the charge controller, which steps it back down to 42v or whatever you set it to. Buck converter: DC-DC Constant Current Boost Converter 400W Step-Up Converter Voltage Regulator 8.5-50V To 10-60V for Electric...

You can't convert if the other connector is a 9-pin. One is a sensorless motor, the other is sensored. You need a sensorless or dual mode controller for the sensorless motor. A sensorless controller can often work a sensored motor, but never as good as a controller for sensored motors. Your...

What batteries are they? Normal Chinese ones can be charged from the 12v with a step up buck converter/ charge controller that you can buy very cheap from Aliexpress. If the battery uses comms, you need a much more expensive solution.

Any Shimano 8 speed shifter will work with your derailleur. it's a shame you're too late now, but you could have got one of the Shimano combined hydraulic brake shifters, which are really good. I try to fit them on all my bikes. they're normally around £50 a pair, but sometimes £40, and I just...

You can use an old chain and a screwdriver rather than a chain-whip tool. You still need the cassette removal tool for the locking ring.

Suppliers don't have a clue how their stuff works. You'd be wasting your time. there is nothing wrong with what you have. You just have to figure out how to use it. Try what I suggested in post #206. I'm pretty sure that it'll solve your issue.

That's typical of what happens when your battery is knackered. 3000 miles from a tiny battery under a lot of stress is about what I'd expect. The only way to be sure would be to do a load test on the battery.

They last forever if you don't use them. On the other hand, they don't last 5 minutes if your battery catches fire.

I don't think it's anything to do with the pedal sensor. All it does is pulse. The pulse speed doesn't matter. The only thing I can think of is something to do with the clutch, but I can't think what. In one case, the the motor is spinning with the clutch disengaged, and the other the motor...

Mine is instant. the control system doesn't have any intelligence that could do that. You open the throttle and it goes. You pedal and it goes. It doesn't care what speed you're doing or have been doing other than the consideration of the max cut-off speed. Maybe his battery is weak and can't...

13 mph is the point where the controller can no longer give full current. Here's a simulation for any 201 rpm motor at 36v with a 20A controller. You can see the ramping down from 22km/hr where the red and blue lines are together. The corner at the top is where the controller is no longer the...

Raise the stem first to give yourself more room, or even completely remove it while you adjust the headset. That will give you more movement to wiggle it off.

I have 48v 328 rpm Q128c motor 14A and 22A KT controller and I don't get any of that. It behaves exactly like one would expect. It goes immediately when I use the throttle or pedal with whatever power I select subject to effects of back emf.

According to my tests, the controller displays the speed according to the speed sensor, but works the cut-off speed from the motor. This means that the motor is always spinning without any load when you're pedalling because it gets the order from the pedal sensor. It will be frequently spinning...

What happens at maximum speed is normal. It's due to the back emf from the motor which causes the motor to generate the same voltage as the battery but in the opposite direction, so you get zero volts at the motor at maximum speed and nearly zero volts when you're close to maximum speed. The...

There is nothing in the controller that could cause that as those wires are connected directly to the battery inside the controller. The controller doesn't do anything other than put a box around them. You should check the voltage on the main battery wires going into the controller while...

You can buy new and used hydraulic brakes for the same price. Fitting is identical - basically three screws. After fitting cable disc brakes, you have to do two adjustments, one to get the fixed pad close to the disc and the other to get the cable length right. You don't have to do any of that...

If belts are so great, why isn't everybody and every bike maker using them? Look at all the bikes when you're out and about. How many have belts? I doubt that you'll ever see one.

Cable disc brakes are better than rim brakes, in that they don't wear the rims, but they're pretty crappy as brakes, and they soon go out of adjustment, which causes their performance to drop off. Even the cheapest Chinese disc brakes are miles better, and they never need any adjustment, so you...