December 2017 – SheldonBrownBlog

MIT aluminum bicycle project, 1974

Marc Rosenbaum's 12 1/2-pound aluminum track bike, 1974 — Marc Rosenbaum’s 12 1/2-pound aluminum track bike, 1974

Harriet Fell rides her aluminum bicycle, 2005

New post: the MIT aluminum bicycle project, 1974, where modern aluminum bicycle frames got their start as student Marc Rosenbaum’s thesis project. sheldonbrown.com site owner Harriet Fell built one of the original MIT aluminum bicycle frames, it came to be an exhibit in a Klein vs. Cannondale lawsuit — and she still rides it!

Bottom bracket of Harriet's bicycle — Bottom bracket of Harriet’s bicycle

Update to Shimano 7-speed hub gear page

Shimano Nexus 7-speed internal-gear hub with Rollerbrake

Our Shimano 7-speed hub page is now updated to fix the links which broke when Shimano redid its Web site. We have also added information about new models, and made a few improvements in the text. All of our pages about Shimano internal-gear hubs are now up to date.