[quote] My Fox fork hits the downtube!

Ok so this was originally covered in the singlespeed forum but for reference here goes:

I'm not pointing fingers, but offer this information.

If you own a Surly 1x1 be sure to chech your lower headset cup's stack height before riding your bike. The right control knobs hit, if using a Chris King ot other similarly sized headset. Cane Creek makes the "Tank Hit" headset that's the easy fix. For those of us that are either Chris King loyalists, or just plain cheap or imaginitive here's a couple ideas/solutions that I don't necessarily have an opinion on, but have been trying out:

#1~Use a Chris King Steelset(read expensive, but strong and steel cups).
A. Properly ream the headtube to a 1" depth on both sides.
B. Use a headset facing tool, only remove the excess paint from the headtube.
C. Using a liberal amount of grease, and a 1.5-2mm headest spacer
on the lower cup, install the lower cup.
D. Install your lower cup race on the fork and ride away. Periodically reinspect for any
problems or looseness.

#2~Using a headset and bottom bracket spacer
A. Ream out the inside of a 1.5-2mm headset spacer to match the i.d.(inner diameter)
of the Chris King headset race.
B. Using a liberal amount of grease, install the modified headset spacer.
C. Using a 2-2.5mm bottom bracket spacer, apply a liberal amount of grease around
the outside of the previously installed modified headset spacer, and install the bottom
bracket spacer around the headset spacer.(It should fit easily, without excess play.
D. Using grease(yeah, again, it's your "Friend"), install your lower cup race ot top of the
spacers, making sure the spacers don't shift out of alignment.
E. Reinstall your fork and ride away. Periodically reinspect for any problems or
looseness.

#3~Call Fox Shox and Convince them that:
(This neither Surly's fault, known opinion, nor suggestion.)
A. "This is not something you haven't heard of, and isn't isolated to Surly's frames."
B. "No, this isn't the frame manufacturers'(plural here, there's other frame makers who
have seen this)."
C. "Yes your forks rule, but come on, recess the right top nut, add material to the fork
crown surface, and solve this."

#4~Succumb to the little voice in your head, and sell off, or pass on your Chris King
headset and use the aforementioned Cane Creek "Tank Hit" Headset.

It is not my intention to bash or flame here.

I'm a longtime pro-wrench who knows what he's talking about, and out of the four solutions
offered, will always go with the safe and smart choices of #'s 3 and 4.

Good Luck!