Recent content by spokewrench

Years ago I saw video of a mechanic in a large shop replacing the BB in an 80-pound bike with each end suspended from the ceiling. Swinging wasn't a problem, and the bike couldn't tip over.. I've found that in some cases, swinging is annoying, so I use 2 eyebolts, each rated at 600 pounds, to...

I don't ride anywhere without this tool. This morning I stopped to use it only 300 yards from my driveway. As usual, there was no emergency. I did it to flirt. A beautiful automobilist did likewise. https://www.amazon.com/dp/B0BZT49CBG To paraphrase a line about Robert Mitchum in "Thunder...

I haven't had that problem, but the chain on my Radmission kept smudging my right pants cuff. I used a heat gun to bend a piece of polyethylene garden edging into a guard to cover 11cm of chain. I installed a faucet with a pull-down sprayer on the bathroom sink so I could rinse soap off my face...

I haven't yet needed this spreader for brake pads, but it was just the tool to pop the cover off my Radmission motor to dispel my misconception that it was direct drive.

The weight of these motors immediately persuaded me that they were direct drive. I also noticed that they were quieter than my Radrunner gears. I weighed the front and rear wheels from my Radmission: 2.8 and 5.7 kg. The 2.9 kg difference sounds like a geared motor. So I opened it. You're right...

My 2020 Radrunner had 20 poles and 5:1 gearing. I believe the Rover and the Mini used the same motor. To program a KT controller, one multiplied the poles by the gearing and said it had 100 poles. Using a motor with 100 poles would have the same effect as gearing a 20-pole motor: 5 times the...

Of 4 e-bikes I've had, only the first had a geared motor. I think the advantage to gears is lightness because you can get torque with fewer poles. Geared or direct drive, if a motor is set up for a back emf of 48 at a little over 28 mph, a 36 volt battery won't let it spin much over 21 mph...

Got it! I got that phone as a phone. How am I supposed to know all those icons and swipes and other stuff? Bluetooth failed again, but email worked this time. Thanks for the tips!

It said I was sending it with bluetooth, then said it failed. I thought I was attaching the file to an email, but when I opened it on the Mac, it had no content. Arggh!

A man wrote me an estimate this afternoon. He said my carbon copy was faint and offered me a picture. He sent it from his phone to mine. I asked if he could email it so I'd have it on my Mac. It didn't arrive. I guess he got my email address wrong. How can I email an Android text attachment?

The Aventon 48 volt battery is 678 watt hours, while the 36 volt battery is 720 watt hours. It looks like the 36-volt battery would cost a little more. I was thinking of back emf. A PM motor is a generator. The faster it turns, the more voltage it produces against the battery. If you hooked it...

Aventon seems to be going to 36 volts. There must be advantages. Maybe it could prevent users from getting far more than legal power with an aftermarket controller. Maybe a 36 volt battery is easier for a controller to keep equalized. Anyone know why Aventon is reducing voltage?

Ten years ago I bought this assortment of 419 universal o-rings in 32 metric sizes. https://www.amazon.com/dp/B00KC3CUJE They have seldom worked. They may be metric, but they aren't ISO. Anyway, 32 sizes isn't nearly enough. So I went here. Jackpot...

Poor balance is associated with being old, but it has causes. As I dismounted my 550-pound bike, I fell over backward with it on top of me. I was 23. It was 10 PM. I’d been riding almost continuously since 5 AM on back roads across five states. The bike had done my balancing. Now, as I...

I did a browser search for "freehub dust seal." Then I selected "images." Lots of items. If one looked right, I'd check the diameters.