Fitting mudguards to CX bike

BRIDKID Posts: 51
edited December 2010 in Road buying advice
My bike, a Fuji cross pro has mudguard fittings but no chainstay bridge.
I have seen a handy tip to use a DMR hinged clamp which woild appear ideal vut I cannot understand the size I need. On the Wiggle page it gives 28.6 / 31.8 and 34.9.
What do these refer to? I ran a tape measure around the tube but that is 10.5 cms.

Also has anybody else used one and what are your opinions? The only downside I can think of is that the guard will be virtually hard up against the tube & quite a way away from the tyre at the base but its no big thing.


  • AndyF16
    AndyF16 Posts: 506
    The measurement given is the seat tube diameter, not it's circumference - easiest thing to use is a large adjustable spanner to ascertain this :idea:

    Sorry I can't help with other info but I'm sure someone here will shortly
    2011 Bianchi D2 Cavaria in celeste (of course!)
    2011 Enigma Echo 57cm in naked Ti
    2009 Orange G2 19" in, erm orange
  • andyp
    andyp Posts: 10,111
    The measurement is the diameter of the tube, not the circumference.
  • Doh!

    Cheers - I must stop drinking beer to excess ;-)
  • Monty Dog
    Monty Dog Posts: 20,614
    Your seatpost size is a good indication of seattube clamp size - if post is 27.2mm, then you need 31.8 whereas if post is bigger e.g. 31.6 then you'll need 34.9mm
    Make mine an Italian, with Campagnolo on the side..
  • Thanks Monty - my seat binder is 31.8 - I suppose I therefore need 31.8 size.
    I'll report once I've tried the clamp attachment - might help others decide.