Originally Posted by
ebgbz
I'm not sure how to respond to all of the responses. It sounds like everyone is saying the same things. What I didn't make clear and should have is that I am changing th fork and will need to cut the steerer tube. I know that 10mm or 20mm doesn't sound like much but when coupled with a 25deg riser stem that it's the hossle inserted the required 2.5" by cutting the steerer to accomodate a tasller spacer I would effectively raise the bar 3/8" w/a 10mm spacer and 3/4' with 20mm. If I cut the tube to accomodate a taller spacer Wouldn't I overcome the thread deficiencies and have the lock not with the proper amount of engagement?
So if I understand your situation right this time around... (and say three "Hail Bicycles" for withholding information)
The replacement fork will be threaded, you want a high bar position, you want proper head set lock nut engagement AND you want the stem's wedge to be located below the threaded portion of the steerer. If the stem is higher up in the steerer then this the wedge will tighten amongst the threads and the potential of the steerer cracking at this point is REAL and if not noticed before complete failure will result in a "thinning of the herd".
Is that plain enough? You have to work out the actual dimensions to get there, as you're the one with the parts in hand. Andy.