Category Archives: Testing and Tech

It’s Not Easy to Be Honest

I used to wonder why manufacturers offer things that are popular, even though they don’t work well. I recently read an interview with a BMW engineer, who complained about the huge wheels that the company now puts on their cars. … Continue reading

Posted in Rene Herse cranks, Testing and Tech | 89 Comments

Tire Width: how much difference do a few millimeters make?

At Compass Bicycles, we often get the question: “I am riding 23 mm tires right now, and I wonder whether a 25 mm-wide tire would make a noticeable difference.” The graph below, taken from the Spring 2013 issue of Bicycle … Continue reading

Posted in Testing and Tech, Tires | 72 Comments

Chainring Choice or Shifting Ramps?

The chainring choices of our René Herse cranks are not limited by dedicated shifting ramps, so you can use any gear combinations you like. We have optimized the chainring tooth profile to shift well at all times, and not only … Continue reading

Posted in Product News, Testing and Tech | 24 Comments

Trouble with STI Triples

Triple cranks are a good choice for some riders. The most common shifting system for triple cranks, Shimano’s STI, only works with Shimano chainrings. Unfortunately, Shimano’s chainring combinations are of limited use to most riders. If you want to customize … Continue reading

Posted in Rene Herse cranks, Testing and Tech | 61 Comments

Laws of Physics

In the last issue of Bicycle Quarterly, we compared the performance of a 17-pound titanium racing bike and of a 26-pound steel randonneur bike. We were surprised when both bikes climbed at the same speed in a set of controlled experiments. … Continue reading

Posted in Bicycle Quarterly Back Issues, Testing and Tech | 70 Comments

No Mudflap: What a Mess!

Just one week of riding without a mudflap, and look at my bike! It’s a mess! I ride my Urban Bike year-round in rainy Seattle, but thanks to its generous fenders, it rarely gets dirty. I clean it only once … Continue reading

Posted in Our Bikes, Testing and Tech | 38 Comments

North American Handmade Bicycle Show

This year’s North American Handmade Bicycle Show will take place in Denver, CO, on the weekend of February 22-24. NAHBS is a great place to see many builders showing their craft. The event is a showcase of the vibrant custom … Continue reading

Posted in Testing and Tech | 2 Comments