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FYI. He needs insulating washers over the positive terminals. It's for reliability over time, and also good insurance if your weld is done off center. There's a real chance one could put the weld tips down off center and short the positive terminal to the side of the cell. I probably would have...

Samsung 50S, a 5AH 21700 rated for 25A if you can keep it cool. Otherwise, should push 10A easy and if you had a 14x4 array, that's a 52V20AH battery capable of 40A. Make it 14x5 for a 25Ah battery, In any case, go with a 5AH cell that's rated for at least 14A of continuous current. You will...

I am lucky in that every time I check the link, it's out of stock. Would have bought one to go with our other six bikes, and I believe the dog has a couple to pull her trailer.

Gromike has steel forks on his front drive bike, as I do on mine. Alloy forks are brittle and likely to snap at the slots where steel bends. Some forks, even if steel, are too delicate for a motor. People use torque arms. which you can buy. The dropout slots are 10mm wide and sized for a 10 mm...

I like the looks of a shiny steel dork disk. If it were yellowed plastic, it might go away,

Most 48V controllers will run on 52V, but the low voltage safety will be set for 40V, about 3 V too low for the 52V battery, This is not a big thing, as the battery has its own low voltage alarm set around 43V. Since it's a front hub, you have to be knowledgeable when you want to go for higher...

When we were in Florida in January of 2018 and 2019, we didn't see but one or two ebikes on the popular paved bike trails. Now I imagine there are plenty of ebikes. 2019 was the last year we did the Bike-the-Drive thing where Chicago closes off Lake Shore Drive and lets 8-10K bikers do a 30 mile...

I updated to a new alloy rear wheel for my last conversion, and took the freewheel and steel dork disk from the old steel wheel.

Been victimized twice by broken bits of beer bottle on the sidewalk near home. Drivers like to throw their empties there. At least the whiskey bottles, big and small, are plastic. My wife thinks I'm nuts, but I often pick all that crap up.

Too late. All sold as of 1600 hours 8/23/05. Woulda been a good deal. I paid over $391 just for the motor in my last mid drive conversion.

Self-discharge on healthy cells is largest at full charge, and drops significantly as the charge decreases. The UB3480 shipping regulations call for shipping lithium-ion at 30% SOC. about 3.43 volt per cell. At this level, they can sit a long time. I've got bare Samsung 30Q cells, bought new...

Bad lifestyle choices (folding fatties) call for extreme measures. Just kidding,

I see you have a risingsun controller with good documentation. IS your display compatible with it? DIsplays and controllers must be from the same manufacturer and use the same comm protocol. Displays and controllers often use the same connectors, so you can connect a foreign display to a...

I have those UPP water bottle packs too, 36V10AH and 48V7AH, both with a nominal 350WH rating, Real life is about 300 WH, and I typically get 33-34 miles if I run them flat. AT home, we rarely go farther than 22-24 miles, Come home and recharge for the next ride, I have a really old Luna 52V6AH...

Must be nice in the Carribbean. Never seen a 10 pin cable. How did you get the wire colors? Did you cut the cable open? Then you saw something like this, Thick: yellow, green, blue Thin: red. black, yellow, blue, green, white, and grey. Would guess the white is a speed sensor. If you apply +5...

A 20AH battery is probably OK with a 6A charger, If it's made with 18650 cells, there will be at least six cells in parallel and 6A separates down to 1A per cell, which is OK for charging. However, if you want the cells to stay cool and last longer, charge them at the lowest current that your...

Mirrorcycle I stole off another bike. And here you can see it's a Mixte with two flat bars so I temporarily can strap batteries to it. Always thought the Mixte offered some flex in the ride.

Fifty years ago, my wife owned a red Raleigh like this one with drop bars. Regret not keeping it, but I found this one to convert with the Toseven DM02 500W kit, I bought the 500W DM02 last September, but other bike projects were ahead of it, Just about finished this week, One glitch was the...

The round water proof connectors used on harnesses are pretty good defense against corrosion, Sometimes owners will use zip ties to dress up cables, and if they are too tight, they can stress/break wires inside the cable, Motors/controllers will overheat and fail if you beat on them. I've have...

If it's badly unbalanced, as you probably know, just one cell group may be stuck a little above the 3 Volt minimum, and a heavy load like full throttle causes that group to sag below the minimum and shut the battery off. Looking at the overall battery voltage probably won't show that unbalance...