Sackville Backabike Bag, each Color:Navy/Bright Blue 2-tone it tighten or loosens both

it tighten or loosens both the non-drive side adjustable bearing cup on a normal Shimano or Tange cartridge bottom bracket

It is so groovy

The BB shell is our normal 68mm threaded

It's not a looker

There may BE a theoretical mechanical advantage to putting the brake shoes there

Sackville Backabike Bag, each Color:Navy/Bright Blue 2-tone it tighten or loosens bothUpdate, May 22nd 2026: Add a Backabike bag to the cart and get a Shiny Rear Rack for 30% off. The discount will apply automatically once they're both in the cart. Sackville Backabike rear Bag, each Simple, extremely well made, and a little more expensive than Ortlieb panniers. SOLD SINGLY, but please get two. It mounts via two small leather buckle straps (or Voiles, if you like), and a bungee'd hook via two d rings on the back. It's not the one hand