Originally Posted by
obrentharris
The stem top cap does not enter into the equation because it is above the stem not under it. Therefor it has no effect on handlebar height.
The difference in handlebar reach may be accounted for by a difference in seat tube angle unless you measured your saddle setback from the vertical centerline of the bottom bracket.
Brent
I'm referring to the headset (bearing) top cap, which is under the stem and spacer, not the compression plug top cap...I understand that that has no effect on stack height. Setback was set from the center of BB using a laser level, and is the same on both bikes.
Originally Posted by
woodcraft
Seems like the longer wheelbase would make a difference.
Have you tried lining them up side-by-side?
There is a major difference in wheelbase, 1030mm vs 976mm.
Maybe it does have something to do with the longer wheelbase/fork length(cervelo doesn't list it)/HT angle...but since everything is measured from BB centerline, it really shouldn't affect the overall stack/reach.