Nick Zatezalo wrote:
> How does one tighten this rascal so it does not slip. I have tried brute
> force
> and the clamp is still slipping enough to make the nose of the saddle
> raise
> about an inch during a ride. I am using a Selle San Marcos Regal saddle
> and it is clamped near the front of the rails.
>
This post's clamp relies on the bolt tension to create a wedging effect, increasing friction on the sliding, canted surfaces. Mine has slipped in the past, and the best I could do was clean the surfaces with solvent (alcohol) and lube the bolt's threads. Mine came with an alloy bolt, fwiw, and now it doesn't slip. I would want to be certain, as with certain other items (like seat binder bolts), that the bolt or bolted assembly isn't somehow bottoming out before all the bolt's tension is fully applied to the friction surfaces. I hate when that happens! Perhaps some slight roughening (and cleaning) of the friction surfaces might also help. You might also want to confirm that the lower cradle isn't cracked.
David Snyder
Orinda, CA
USA