Originally Posted by
invisiblehand
So the effective top tube length is the horizontal distance between the seat post and saddle. Given you have the sport stem post, what is the effective stem length?
I have looked at the stempost and while I haven't actually taken a ruler to it, the effective stem length looks every bit as long as on the Swift, to my initial surprise.
Further thinking about it made me realise that the seat tube is welded so it comes out behind the bottom bracket shell, so we are looking at apples and oranges. If the seat tube came out on the BB shell as in the Swift, the effective top tubes would be about the same for the 2! So we're back at the size medium.
That explains why the effective stem looks to be about the same again. And why I couldn't ride it with the comfort stempost.
Having said that, the sport stempost still offers taller riders who like a more sporty posture a roomier cockpit because the cockpit stretches if seat and handlebar are kept at the same height.