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I own a front motor, one bafang mid motor and a few rear motor conversions. It's important to get the wheel weight down so that they are easier to accelerate. I once bought a very inexpensive $79USD fat tire bike. Everything was steel, including the rims. I could barely pedal that bike 1.5...

The buck converter will keep the voltage up as the battery drops, I was running it on a relatively big load for me, a fat bike motor. with a 20A controller. With a real time volt meter, I recall a 4V sag with throttle. It would probably would be less sag with my Q100 motors, but I'm already...

I've used the buck converter. Yes, you could set it to 48V, if you wished, which will still be within the range of a 50V electrolytic capacitors in the 36V KT controller. The output is limited, I recall to 20A, but you will pull more than that out of the battery. What's nice is that I could...

It's a shame to cut your IT4 cable, but if you try to buy cable extensions and splice them to make your 5pin to 9pin cable, it will cost more than a new IT4. So it's knife, solder, and heat shrink. The wire colors will probably track all the way thru, but just to insure yourself if they don't...

My BBS02 is from 2016. Runs fine on either a 13S or 14S battery. Also can use pedal assist and feather in any amount throttle as needed. What I've read is that some time in 2018, Bafang changed the firmware so that the throttle behavior is mucked up. One cannot mix them together as precisely...

Where to place the controller, and attaching the pedal sensor are often the two parts of a hub conversion that take the most thinking. Never been able to use the ring mount as intended, screwed under a cap. Not going to use glue, so I end up fabbing a DIY mount for the sensor. I've tried the...

I had a problem with PSWpower sending a package to the wrong address 1000 miles away. They asked me to go there and get it. After DHL shipping sent me proof that it went to wrong address, Alice offered me a dollar. She must have been convinced I was a scammer. She thought she had the right...

Close the dispute and I suspect they go dark again. I thought BMSbattery would be better than that. I've bought four motors from them, but my last one, a AKM100, was from topbikekit.com. SHipping seems more reasonable.

If the controller is getting hot, it shouldn't be in a bag. Zip tie it to the frame, if you can. The open air will keep it cooler. If you can clamp it to the frame with a bracket, then you'll get the benefit of more heat transfer.

Agree on the spiral wrap. I would get a few lengths in my kits and I set it aside, preferring to use automotive plastic wires looms, which are like spiral wrap but quite bulky. One day, I saw a cheap imported ebike. They spiral wrapped the whole front handlebar down to two groups, and it looked...

Last year, I deliberately miswired my 22A KT controller to spin a geared motor backwards. It was interesting to hear it whine with nothing happening outside. According to the popular bootleg schematic of the KT's, their microcontroller does have a learn lead, but it's tied off. If so...

Simply put. learn mode is flakey. It almost seemed like the connectors were intermittent. Power up and nothing happens. AFter a few tries, it always spins backward. Then I break the connection, make it again, and it spins forward, but so slow, like 1-2 rpm. Sometimes, if I let it spin, it will...

Unless that writing on the controller is in chinese, you're in good shape because the connectors are listed. Buy a decent controller that comes with a wiring diagram, like most Kt controllers, along with a matching display, and it shou;d be easy to reconnect a new one. And if it is in...

Those look like RST suspension forks. Living double dangerously if true,

I've bought that throttle unit just to get the voltage display, except mine had a red button instead of a key switch. If the ad says it has a throttle, then it's likely the wrong picture. The throttle arm would snap in on the right side, with a spring to tension it. What confuses users about...

Today I discovered the drawback with my 25A controller. It runs about 140-150W in PAS 1, vs about 100-110W on my 20A model. Felt good, but I kept outpacing my wife. While waiting for her to catch up, I dialed C6 down from 10 to 7, which makes it a 20A controller again. When I get a chance...

Thanks daniel. I had done the reset. After some more testing of my various ebikes I conclude that all my sine wave controllers do it. Slowly raising the throttle past some intermediate speed causes a blip where the motor noise changes. On my video, wiith only a bare motor, you see a speed...

I tried this with two different motors. Both jerk around 15 mph under throttle, the speed drops to 13. From there, it will accelerate again and not do another further jerking unless I stop it and restart. It seems to be associated with both my KT 20A and 25A sine wave controllers. It doesn't...

I have to disagree about all square wave controllers being sensorless. I can find all kinds of square wave controllers on ebay (USA) with Hall connectprs. I understand PSWpower only shows sensorless square wave boxes with torque simulation. Yes, I agree anything with only three motor wires is...

Hi vfr400, appreciate the LCD4 manual, but that particular one doesn't discuss the L parameters. They are in this link. https://cdn.shopify.cn/s/files/1/1430/3254/files/KT_LCD8_DISPLAY_USER_MANUAL_12676e67-7c33-4036-b255-78a4ac6beed2.pdf?v=1589875045 Want to keep L2 =0 unless one has a really...