Originally Posted by
rekmeyata
My 2019 Masi Giramondo preferred a weight placement of 80r and 20f, but there was something wrong with that frame because it would shimmy like crazy, and that weight distribution reduced it but did not eliminate it.
Ancient lore, passed down from master to apprentice since the 1890s:
Racing bikes are built with robust downtubes and chainstays to hold the wheels in line during those 1250+ Watt sprints. The twist on the frames is down low. The top tubes are light and those bikes are built with pencil stays.
Touring bikes - racks and panniers or bikepack-style dunnage - have weight attached at the headtube and seat cluster. Ergo, touring frames have additional twist up high. Touring bikes should be built with relatively more robust top tubes and seatstays.