New fork: which one fits?

Ugo51

Ugo51

Retro Guru
Hi all,

Wanting to replace the suspension fork with a rigid fork, how should I be reasonably sure it fits?

It's a threadless, 1 1/8 steerer tube, 190mm long (obviously I can cut it if longer).
Dropouts to crown 400mm
Cantilever brakes (same mount as V-brakes, I am told).

Anything else I need to check when buying?

Thanks,

Ugo
 
Re:

Is the suspension fork currently fitted to the frame?

If so, sit on the bike, so that the fork sags to where it would be in it's "neutral" state as it would be when you're riding about on the flat, then measure the axle to crown length. Try and get a rigid fork with a similar A to C length as the suspension fork when "sagged".

Also, some manufacturers state what suspension travel their rigid forks are corrected for, for example: https://www.carboncycles.cc/?s=0&c= ... amp;tb=004, you could use that as a guide.
 
Thanks.

I take there are no other things to check to ensure compatibility? The crown is the same? Some forks seem to have some sort of integrated race, meaning that the crown is not flat but already machined to fit the bearings.
 
Re:

I don't think so, especially not with standard 1" and 1 1/8" steerers, and external bearings, things get a little more involved when you get into tapered steerers and intergrated headsets, where there are so many "standards" that there is no longer a standard. :roll:

Having said that I think most of the differences are on the frame fit side of things, not the fork/crown.

https://www.parktool.com/blog/repair-he ... ion-system
 
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