To the contrary of "no reason...":
My reasons for desiring a frame with 1 inch or less, even on my custom Serrota CSI (why did sell
that bike!?).
-I prefer down tube shifters on some bikes, and the higher top tube allows better ergonomics when
reaching for the levers. Smaller frames make me turn my wrist in to get the levers. Downtube
lever double shifting (with one hand, both levers) is awkward with frames fitted to the modern
trend towards smaller frames. The top tube/downtube/headtube juction is too cramped for my
likings on the smaller frames that are all the rage now. Of course, such smaller, modern frames
usually don't have downtube braze-ons for shifters anymore (grumbe grumble).
-I like being able to squeeze the top tube bewteen my knees when riding without hands,
descending, and aero tucking on descents. Also like the feeling of being able to lay my knee
against the top tube in some cornering situations as it makes me more subconsciously aware of my
position on the bike, I suppose. Top tube is too low for these things on some smaller frames or
frames with a sloped top tube.
-High top tube allows more room for a frame pump without crowding the downtube shifters.
-On some bikes, I prefer the more traditional look of a horizontal(not positive rise)stem and
don't like the look of small frames with a ton of seatpost exposed.
I think all of the old fitting rules, equations, and advice from the shop employees are OK for a
first frame, but could safely be thrown aside after a cyclist has bought his or second (or fourth,
or fifth..) frame, and can better make his or her own decisions.
Pat Smith
"Bruce" <[email hidden]> wrote in message news:<[email hidden]>...
Quoted message said:Unless you are very short (less then 5 foot) there is no reason to have less than 1" of clearance
on a custom frame. Stems can point up, top tubes can slope, seat posts can be long and extended.
So if your current custom frame design has this, then perhaps it was designed for someone's ideal
and not yours. Didn't the builder ask you how much clearance you wanted?
-Bruce