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is the reach/length measured
i) centre of steerer tube to centre of handlebar along the length of the stem, or
b) centre of steerer tube to centre of handlebar along a line perpendicular to the steerer tube?
Or, if I want to keep a similar saddle to bars reach but raise the bars with a higher degree stem, do I need to stem to be longer (let's ignore the headtube angle for now)
Or, would a 5cm reach, 90° rise stem be
5) 5cm long, or
?) infinitely long?
This [url= http://alex.phred.org/stemchart/ ]LINK[/url] is pretty cool and ideal for messing around with different stem lengths and angles and comparing with your current setup.
Edit - IMHO stem lengths are measured from the centre of the stem bolt to the centre of the bars. You will need a longer stem if going for a higher rise.
amplebrew - that's dead handy, thank you!
Even that's confused though, it uses "reach" to mean the both length of the stem in the input bits and also the distance to the bars from a vertical line through the top of the headtube.
but I agree with you, "reach" in spec's relating to stems as individual components will almost certainly mean length.
I really appreciate the link though, takes some assumption work out for me!
25° and 105mm will put my bars 34mm higher and 4mm closer to me than the current 7°/90mm.
That's cool 😀
It's a handy link and at least gives an idea before swapping stems back and forth.