anyone know the exact I.D. of FSA 1.5" crown race? for A9C?

[Riken]

before someone says: 1.5".... I'm measuring ~1.572" at the base of the taper. i'm wondering how much interference is required.

thx

[shiggy]

before someone says: 1.5".... I'm measuring ~1.572" at the base of the taper. i'm wondering how much interference is required.

thx

brand does not matter.
Fork crown seat OD: 39.79mm
Headset crown race ID: 39.76mm

http://canecreek.com/resources/produ...pecs-rev-e.pdf

[Riken]

so .001 - .005" interference going by the chart.