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In my case, I looked into the hole in the crank arm, and it looked poorly milled. I filed it for a better fit. After tightening, I'd estimate the mm between the crank arm and the BB shell. Each time it started to wobble, that distance had increased several mm. It finally dawned on me that the...

1/4" box wrench, string, soda bottle. Put the box end on the bit in the screwdriver so that the wrench is cantilevered horizontally and read the inch pounds. With a short, light wrench, it will probably be trivial. You can also calculate the approximate torque at the weight of the wrench times...

My 1/2" torque wrench goes to 140 foot pounds. That wasn't nearly enough for lug nuts installed with an impact wrench and no adapter. I came up with 250 foot pounds by putting a pipe on a wrench and estimating how much weight I put on it. I supported the head of the wrench so the downward force...

Modern valve cores require more torque than they once did, and I didn't know the spec. Three years ago I bought a Slime valve core torque tool, set up a device where I added water to a 2-liter soda bottle to apply torque to it, and found that it clicked and slipped at 4.8 inch pounds. I guess...

This intrigues me. https://www.amazon.com/VANPO-Digital-Display-Torque-Screwdriver/dp/B09YTS1Y6C It goes to 6Nm at 2% accuracy and warns not to exceed 7.2Nm (62 inch pounds). It reads torque as you go and warns when you're getting close. You can switch between measuring systems. If it uses the...

https://www.amazon.com/Fix-Sticks-Tightening-Accurate-inch-lbs/dp/B08S79RLF2 January 24, EnduroDriver, the fifth reviewer, posted a review saying you read the gauge as you turn. If I had any class at all, I'd admit I was wrong. Instead, I'll accuse: Nice try, EnduroDriver! :D

It looks as if it could be hard to read while torquing a screw. Amazon has a 1/4" beam wrench for $20.

https://www.sloky.com.tw/en/product/Adjustable+Torque+Adapter.html The videos on the page show fixed adaptors, identified by color, that slip when the specified torque is reached. The users seem to work in repair shops. The page says the adjustable model opens up possibilities in hunting...

I had the opposite problem, not with a pedal but with the left crank arm. I'd use Permatex Screw Glue and torque the bolt to specs, but in a day or so the crank arm would wobble and I'd tighten the bolt again. Replacing the crank arm seemed to solve the problem, but it recurred months later. It...

I believe it's made to limit, not measure, torque. When I bought tires for my car, the mechanic used his pneumatic impact wrench to tighten the nuts to 250 foot pounds. They're supposed to be 65. He was supposed to insert a stick like that is springy enough to absorb impacts once a certain...

It worked. On one bike, the rim was true, but one section of tire was off by 3mm. It seemed to be installed correctly because the bead seemed evenly seated all the way around. Still, I deflated from 50 to 8, rode 200 yards, and re-inflated. No more tire runout! The next time I patch a puncture...

I figure if the rim's fine, I'm not going to alter it for the tire. What if I repair a puncture and mount the tire in a different rotational position? What if I get a new tire? An item on automobile tire runout says it's okay if radial runout is <.125" and lateral runout is <.10". It says the...

I measure at the rim by putting a finger against fork or chain stay and turning the wheel. If runout is more than 1mm, I'll know it. I'll measure with a caliper and use tape to mark the rim sector I need to move. Riding, I may see runout as I look past the front fender to the center of the...

I remembered the Theorem because it's useful. The diagonal of a rectangle is the square root of the sum of the squares of the sides. For a 3 x 4 rectangle, the sum is 3sq + 4sq or 25. The diagonal is the square root, or 5. For a spoke, I wrongly called the distance at right angles to the...

The tension (the vector sum which includes lateral tension) should be along the spoke. The nipple should tip to line up with the spoke. The one on the right looks right. The other two don't seem to line up. Are those two spokes bent at the rim end? Are they in the wrong hub holes?

Month after month I thought it was a valve problem. It would stay up for weeks, IIRC, then go flat overnight. The third time I checked the tube, I got it to bubble by inflating it to perhaps twice the size of the tire. It got punctured again. The third time, I was ready. Before breaking the...

Currently I have a single speed e-bike and a derailleur e-bike. Of the 4 wheels, the only one that doesn’t offset the rim from the hub is the one with the cassette. The hub is centered on that one because the cassette on the right balances the brake disk on the left. For safety and handling...

I removed my spring to make room for my chamber pot! :p

What e-bike BMSs lack balancing? My Radmission cost $500 new. If the BMS didn't balance, two years of differing cell self-discharge would have greatly reduced my range. According to my log, it's the same as it was new. Radpower's balancing instructions were the same as for my Radrunner in 2020...

If passive balancing simply used bypass resistors, the self-discharge would be horrendous. If bypassing charged cells caused any increase in current, then the low cells, not being bypassed, would see an increase in charge current as they approached full charge. That sounds like a disaster in...