[samkl]

Racing or high-end "sport touring" frames from the 70s are really fantastic for the job. Here's my Reynolds 531 1976 Austro Daimler that I did PBP in 2019 and 2023 on. It's very comfy, fast, and "flexy" with clearance for 32s plus fenders. (I run 28s.) It weighs 24lbs with dynamo, leather saddle, and fenders. All the parts are modern except for the brakes. I use a Dill Pickle handlebar bag for brevets, no racks necessary.

The gearing was really the only thing I felt I had to change, since I wanted a 50/34 crankset and 9 speeds in the back. But spreading the frame turned out to be pretty easy. IMO it's the perfect brevet bike.