172.5 on everything. DF3 has a high enough BB to get away with it... except maybe at Calshot.
I've ridden Calshot on 175s on the Koga, but that doesn't make it right. Better to go down to 165s on the road bike than up to 172.5 on the track bike.
I find 165's uncomfortable. They just don't work for me (spare me the lecture on aerodynamics - I know they are 'in' right now)
@dan started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I've ridden Calshot on 175s on the Koga, but that doesn't make it right. Better to go down to 165s on the road bike than up to 172.5 on the track bike.