-----

yes, the "1" fork" is the part which does not fit in.

with a CH shell and a metric tubeset we would expect a steerer diameter of 25.0mm.

so there are two possibilites:

a) the measurement is incorrect, possibly due to a miscommunication

[suspect we are not communicating well. another name for the steerer sometimes used is "fork tube." since you were able to measure the diameter of the main frame tubes you could use the same tool to measure the diameter of the steerer/fork tube. we would expect it to measure 25.0mm. if there is presently a headset in place all that is needed is to remove the headset locknut in order to make a measurement. do you have a seatpost for the bicycle? what is its diameter? this dimension will give a clue as to the tubing employed to construct the frame. if you do not have a seatpost for the bicycle you could use your measurement tool to make a measurement of the seat tube opening.]

or

b) the fork is a replacement

---

for a manufacturer identification we need to hear from luminaries on frankish matters such as [MENTION=43980]CV-6[/MENTION] & [MENTION=359579]Filochard[/MENTION]...or else [MENTION=383399]MauriceMoss[/MENTION] who seems positively unstumpable.


​​​​​​​-----