Herm99 said:
I'm looking at a fork that has the steerer precut to 185mm, i want to purchase it but need to know what size steerer i need. Is there a quick way to measure this?
Thanks!
185 mm = 18.5 cm ~ 7.28 in.
There isn't a length steerer tube that you "need" but you need to make sure 7.28 in. is long enough. How you calculate this is pretty simple. You just add up all the dimensions of your front end....
So basically you need to know the following:
-Your HT length (manufacturers typically list this and it's size specific).
-Take into account your headset cup height (unless it's an integrated system)
-Stem height
-Allow for spacers (I always allow at least 1" of spacers underneath the stem jic) unless your headset has a tall "cap".
Remember, you can always cut it short but you can not (not really anyways), lengthen the steerer tube.