Recent content by docw009

The frame is a old Raleigh 5 speed with 120 mm dropouts. Actual spacing after all the years is 123mm. Going to run it with a midmotor like the DM02 or TSDZ2. Want to use a 6 speed freewheel, because I have one, and it's obviously too wide, as the nut/cone are just inside the cavity, A spacer...

This is likely true for automotive battery controllers, but from what I have seen personally, and also from user posts here, I believe most non-smart ebike BMS do not check for group-to-group variation. They will stay on, as long as each group is above low voltage cutoff. WHen you have the...

I had several rental houses and sweat equity helped me turn a profit, I fixed everything myself, if I knew how. My last house, I was rehabbing the kitchen when an inspector must have followed the delivery truck that brought the dishwasher. Stuck his head thru the open door and issued a stop...

Ah, a two wheel recumbent where your legs are horizontal. I have never ridden one, but a friend brought one to a group bike ride and our organizer, a hard core roadie, kept falling over when she was offered a ride. I would put a geared hub motor on it. Start off using throttle, Never fall over...

The BMS will isolate the cells from the outside world if it detects any voltage problems on the 14 cell groups in a 52V battery, You think you read 2.9V, that's just leakage across BMS. On most of them they switch the wire to the outside ground on and off. The BMS has a harness connecting to...

Looks like she tried to stop, put her foot on the ground, but the scooter never slowed. Also, that's an unpowered scooter going downhill, Has a foot brake on the rear. They are useful. My little grandkid learned how to balance on one a few years ago. Really helped when we moved her to a bike,

At the moment. the KEKK capacitor spot welder I liked on aliexpress will not ship to the USA, but is selling on amazon for the same price ($92 delivered). Not buying it, but that was interesting. I did need a pair of handlebar bags. They are $20 each on amazon, but I can still get two for $18...

There's Your question gets asked here about once a month, often more. Controllers are turned on by applying battery power to a specific input. Yes, they already have the battery wire going in, but that is only connected to the circuits that drive the motor windings. They always require a...

It's probably better not to piggy back off the switch already in your brake levers as it might interefer with the controller circuity. If you don't mind the extra wiring (use a spiral wrap), there are magnetic switches you can attach for a separate circuit. I prefer to hold the magnet with a...

Thanks for the info! Your writeup won't encourage many to program the 860 with the bootloader, but don't most of the tong sheng optioned displays, 860, EKD01, whatever, work with OSF like the VLDC5 right out of the box? It's only when you want the ability to change parameters on the fly that you...

"All the wires are there they just need to be connected I have 2 controllers. If you know how to wire scooters this is a hell of a deal and an easy way to save a couple hundred bucks. There $800 new, " You're in New York and the scooter is in San Francsisco, so it will be $250 shipped. You have...

I believe you connect that "electric door lock" to battery voltage, This turns on the controller. I am just guessing, but your "anti theft alarm" wire appears to be a live wire to the battery. Connect it to "electric door lock", and the controller should power up. Then you will see 4.5V on...

I also lost throttle when going from 1.C.2-3 to 1.C.6. It was a settings error for me, as I had mine set to power up in street mode w/o throttle. I don't see that in your settings, but maybe try enabling throttle anyway in street mode, even if you use the power or other modes.

Samsung and other higher grade cells will vent if the pressures get too hot. Some 21700 cells have two vents. They also have a pressure activated circuit interrupts under the positive cap that break the connection to the outside world if some external source is putting in or taking out too much...

I just ordered some items. $7 plus free shipping on aliexpress if I ordered two. So I did, and the email said they shipped. Apparently, if de minimus waiver is gone, they still haven't started charging it yet. Or it won;t arrive and be thrown in a warehous which will quickly fill up.