There is no pupose at all other than I just looked at my bike and realised that if my headset stack was just 3mm less or so (and many headsets are) I could run a flat crown, if one existed.
I can see that in theory it would be a bit stronger, a bit lighter, a bit stiffer, etc.
Dunno if my headtube is particularly short, old-DHi, 110mm.
It's all of very little consequence, just curious, idly passing time, that's what forums are for, surely?
huh, yeah it should be marginally stiffer but I would guess most people wouldn't notice.
The reason why I asked if it was hitting the top tube was that is the reason most people want the flat crown. The 2005+ boxxer crowns have the pinch bolts located differently and have a lot more clearance.
I think there might have been a Romic flat crown at one point.
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