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Headset stack height??(4 posts)

Headset stack height??modernist
Sep 26, 2001 7:41 AM
Does anyone know how to determine the headset stack height required for a frame and fork. I don't have the original one to measure or compare to. The fork is threaded
yesnm
Sep 26, 2001 7:51 AM
I know how.
here's how..c-40
Sep 26, 2001 9:40 AM
Measure the total length of the steering tube. Be sure to measure to the base where fork's bearing race rests (be sure that the race has been removed).

Measure the length of the head tube.

Subtract the head tube length from the steering tube length. The difference is the stack height. The new headset stack height must be no more than this amount.

The measurements must all be done accurately, without roundoff error, or you could be off by 1/8 inch, which is about 3mm. I use a 12-inch machinist's scale for this type of measurement.

If the headset that you want is shorter than the calculated amount, either cut the steering tube to the required length or place an appropriately sized spacer under the locknut.
re: Headset stack height??flying
Sep 26, 2001 11:46 AM
Here is the Instructions in PDF form ( adobe )
from the Camp site.
http://www.campagnolo.com/pdf/177%20thdlsshdst.pdf