The Sheldon Brown website also provides calculators for these metrics, allowing for a more comprehensive analysis of your bike’s gearing. Internal Gear Hubs The Sheldon Brown calculator also includes a version tailored for bikes with internal gear hubs. Internal gear hubs offer a different gearing system compared to traditional derailleurs.
Sheldon Brown (July 14, 1944 – February 4, 2008) was an American bicycle mechanic, technical expert, and author. [3][4][5][6] He contributed to print and online sources related to bicycling and bicycle mechanics, in particular the web site Sheldon Brown's Bicycle Technical Info.
Articles about bicycles and cycling, including gear shifting, derailer adjustment, chain maintenance,internal geared hubs, Shimano cassettes, fixed gears, using the brakes, bicycle fit, lighting.
Updated: Sheldon Brown’s website to continue despite bike shop where he worked closing down Site the late bike maintenance guru built has been a go-to resource for more than 20 years by Simon_MacMichael Sat, Jun 12, 2021 17:54
The Gear Calculator has now been upgraded to allow entry of data from a rollout measurement. When you enter rim diameter and tire width, the calculator will automatically give you a rollout number, but you may edit the number to reflect your bicycle’s tire pressure, weight load and tread depth.
The 650B (584 mm ISO) tire size is enjoying a revival. It offers wider an more comfortable tires than the popular 700C (622 mm) size, and also makes it possible to install fneders on bicycles which have too little clearnace with the larger size.