Originally Posted by
fietsbob
Math .. 9/8" *... 1.125".. 1 1/8 ~ 28.6mm [= 28.575mm] , not 31.8. 1.25" = 31.75mm
*1.125 is a steerer tube standard these days, though , so .. half mark score.
35 mm = 1.37795275591 inch
Whoops, you are absolutely right! Got my sizes crossed up. And yes, the "maybe" new size is indeed 1-3/8". I know how to do the metric to SAE conversion, I just did the wrong one.