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Without a USB port, a table lamp with an incandescent bulb would probably do the trick. You'd establish a good connection with the battery, then switch on the lamp. A 60-watt bulb would pull 0.5 amp at 120 volts and of course less at 48 volts, maybe .25 amp Incandescent bulbs are getting scarce.

I used to do that in the 1950s. A gas soak would clean a chain without brushing. I'd hang it to dry before oiling, then hang it to drip before installing. Four years ago I switched to a so-called dry lube because with no chain guard, my pants were getting grimy. I learned to apply it with a...

In Alaska in 1971, I volunteered. They issued us 10¢ canteens, first-aid kits, sleeping bags, polyethylene sheets for tents and ground cloths, clothes line, and hard hats. They flew us to the smoke jumper camp at McGrath. It was in the 90s by day and didn't get much colder in the brief nights...

I bought this 64 ounce hammer 6 years ago to cut stumps flush with the ground. Using a framer's hatchet as a chisel was better than damaging a chain saw, but a claw hammer would have had to be swung faster, and a faster impact increases damage and danger. Also, a heavier hammer is better at...

Walmart has the Crescent slide-hammer puller for $40 and $80, depending on the vender. Amazon has other brands, ranging from $37 to $97. I wished my Radrunner battery had a handle. It was mounted between the seat tube and the back fender, so I couldn't use two hands. As I feared, I lost my grip...

Me too! A flat pry bar might budge the boards, and a cat paw could be driven under flush heads, but is it worth it? Mostly, I've sawed off the short lengths of slats. They're good as shims, for example to keep a four-footed A ladder from rocking or to keep an extension ladder plumb. I found...

I passed on the Knipex because of reported quality problems. Then I found that Knipex designed them for a specific purpose: snipping the wires used to tie rebar at crossing points. I bought a Bates version for $5. I discovered that it can't catch a nail as close to the surface as other types...

I ordered through Amazon, but they came from affiliates. The first had the Amazon storefront "cargomart," which is actually Quest Cycles, 20 miles south of Carlsbad, California. The second was from 356 Cycles in Keene, New Hampshire. I didn't see any blemishes.

Just a little modification... https://s1.cdn.autoevolution.com/images/news/gallery/make-it-extreme-drops-incredible-diy-crawler-monotrack-bike-made-from-scraps_7.jpg

You've had a catastrophic puncture in one and the cords are letting go in the other. I suspect counterfeits. In 2023 the Aventon Abound came out with Innova 1A-2128 20 x 2.4 tires. Reviewers struggled to say something nice about them. One said they resembled another make and model known to be...

What I have to say is along the lines of what @Base said. Your fenders can help define the problem. From the outset, I noticed a lateral wobble of the tread of my front Schwalbe Pickup as I rode, viewing it past the end of the fender. With the bike on the center stand, I found no such runout on...

Robert E. Lee is the patron saint of low self-esteem, which means being primarily concerned with what people will think. The purpose of education is to produce a docile generation by instilling low self-esteem. Shut up. Sit still. When called upon, you have 5 seconds to address a roomful of...

Thanks for the tip. I'm tearing down a 10 x 13 tractor shed built 71 years ago with oak and pine lumber salvaged from a 19th-century barn. I pull nails out of each board as I remove it so I won't have to cut or pull nails out of my pants later. Your tool looks better for the purpose than the...

I've read that blood level is not an indicator of adequate magnesium. The body will scavenge it from other cells to maintain the blood level. The endocrinologist said, for example, that adequate magnesium is necessary for 300 hormones. A British study of teeth found a strong inverse correlation...

There was a time when chucks screwed onto Schrader valves with no loss. I think Schrader chuck designers began to ignore bicycles in the 1970s because the Schrader bicycle market was much smaller than before. Car tires have more volume, so air loss matters less. Screw-on chucks are faster...

In the 1950s, a Scandinavian heart specialist began giving heart attack victims an intravenous magnesium sulfate solution as soon as possible. Deaths in the following 6 weeks, which has been 20%, dropped to 2%. Hospitals around the world adopted it with great results. That was bad for the bottom...

My Abound may weigh 90 pounds. I've run 304 miles since my last charge and the display says 69% is left. My first 2 ebikes were single-speed, so I needed a bit of motor torque on hills. With the Abound, if 6 mph is fast enough, I climb without the motor. On a wide street with no oncoming...

I now have two digital torque tools: 0.3 to 6 Nm and 3 to 60 Nm. Measurement doesn't seem to involve any moving parts, which I think may mean great accuracy now and in five years. Each can be set to record peak, which means I can tighten by feel, then see what torque I used. That's fun, but I...

I believe the machinists like my neighbor build and maintain the machinery used for production. I hadn't thought of assembly workers. I'll have to ask him if torque wrenches are used there. Henry Ford's assembly line sped up production but made work so boring that there was a high turnover...

Three years ago I bought a torque driver that works on that principle. I tested it today with a strain-gauge driver. The first time, it clicked at 4.07. The tenth time, it clicked at 3.80. For the 8 between, it clicked between 3.85 and 3.90. The whole spread was only 7%: pretty good. For the...