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Hopefully those with local UK knowledge will advise on where to get them if needed.

As long as you have it apart, trace continuity from the ends of the Hall sensor wires to the sensor leads. Each sensor has three leads. I believe each sensor will have one lead going to green, yellow or blue. They will have one lead going tor red and one lead going to black. If you have...

I know the sound of a square wave controller, having started with several. This was more of a growl coming out of a sine wave controller. I couldn't return it because I had already run my 9 pin motor cable inside and soldered it up. Makes for a more compact install, and having the wires inside...

Have you ridden the bike with either controller? I had a 20Am 6FET KT sine wave model (external) that sounded quite smooth with wheel off the ground, but it made a noise like your internal unit when riding. I had built two bikes with identical Q100H motor and controllers. The other one was...

I've converted three 20" folders and one minivello. None of these were intended to be carried around or folded regularly. The smaller bikes were just more convenient to carry to far away places in my car, and my wife like their handling. A Q100H is a little less than 2.3Kg (5 pounds). I've...

I never liked these false bars even on regular bikes. I always had visions of the seat posts coming off, so I would add something extra to hold the bar to the frame if the seat pulled out, or strap that bike to its neighbor.

If you had a KT connected properly, but no motor connected, the display would power up. Then if the throttle were connected, activating throttle would give you an Error 03, which is listed as "sensor abnormality". It can't detect one or more of the three Hall Sensors. Having the 4.6V power does...

Displays are designed for specific controller families. Bafang works with bafang contollrers. KT diplays with KT controllers. Lishui with Lishui. If one want accurate speed ratings, then install an inexpensive bike commuter. They input the wheel circumference to the nearest cm.

My first conversion was a rear hub motor and uneventful. Second one was a BBS02, memorable because the crank arms were fused to the BB spindle. Took a whole day to remove. At my age, I've learned some patience. My current conversion(s) involve two wheel builds. Looking at 1/2" in wobble and...

Why is lengthening a chain a non-starter for a kit? One needs a chain breaker to remove the front derailleur anyway on a mid drive install. Then you have to add some extra links. I guess it does add cost, and maybe a reseller will need to supply a full length chain with the kit to keep it complete.

Late Update: Back in 2018, when I was searching for a speed input, I scoped out which pads had high voltage, but I still made a mistake and fried my Q100H speed sensor output by connecting it to 48V. So I connected up an imexpensive bike computer for speed, However, while the controller and...

PAS sensors are designed so that if you rotate the crank backwards, they can detect it and not run the bike. THey do this by detecting how how your magents are positioned as the pass the sensor. So flipping the disk the wrong way when you install it is the same as spining the pedals backwards...

Battery prices have indeed changed. When I built my first ebike in 2015, good USA made packs were close to $800 (All-cell). I bought a cheap 36V10AH chinese Dolphin for $280 USD from an ebay vendor. That vendor later evolved into Unit Pack Power, and now I can get a 36V13AH Dolphin for $200...

ANyone purchased from motowoks yet?

I've cut several motor cables and spliced them to use round 9 pin connectors. THere will be three heavy phase wires for sure, and possibly 5 or 6 thin wires. The latter are easy to butt splice. The heavy wires can get unwieldy. Some people lay then side by side, and wrap thin wire around the...

Here in the USA, I find it's a little less money ordering from the pswpower.com site and I get to use paypal, which I prefer to putting a credit into aliexpress. I ordered a LCD3 7 days ago. It is suppossed to be in transit, but the chinese tracking numbers don't tell us much, other than it's...

Not getting a speedometer reading when coasting? The Q128 does have a speed sensor wired into the motor cable, and your controller should pick it up. It would be the white wire in the 9 pin cable. The P2 setting determines whether the controller uses the speed sensor info. Yours is P2 =1 , which...

I've seen the throttle error in a KT controller. It doesn't happen until I try to work the throttle, and it happens because I mis-wired the throttle. Without a throttle, you should be able to test the throttle input by putting a diode between the input and the power lead. I've done this on...

I had a 13S BMS last year that would not shut off. It would read about 39V across the output port. The controller load did not drain it. In fact, the LED light in the pack stayed on when it was turned off. I recall it could supply about 1 ma when I put a resistve load on it. I had waited too...

Of course, you're correct, Vr. That bike was front drive, so the cables went naturally went up along the top downtube, plus I thought the controller was safe inside a box. Alas, water from the rear wheel splashed up behind the seat, and ran down the wires. Yep. That's why motor cables point down...