A lot depends on rider position though, if you have your perineum above your top cap, then "very little" is the answer, if you are sat on the saddle then it's a lot higher.
True.
Varying from not very much to very little.
@Smallfurry 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.
True.
Varying from not very much to very little.