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Got a frame with a 30.9 ID seat tube, which is 33.1 external diameter.
A 34.9 clamp works on it, but isn't ideal.
Other than Salsa - which appear to be like hen's teeth in this size – what are the other options?
Given the option, I'd also rather buy British.
which bastard of a framebuilder went with 33.1?
EDIT: Bontrager do a 33.0mm non-qr and with a forged cable stop which you could file off for about £6.
which bastard of a framebuilder went with 33.1?
😆
That'd be me.
Wanted the mid-ground between 27.2 flex and 31.6 rigidity, after my old Brodie Holeshot (with a 31.6 post) used to feel like it was trying to get intimate on longer rides. Running a dropper was also a must.
I think the Ragley seat tubes were that at one point. I had shims made to fit them to normal clamps.
The Stif Morf would have the same problem but has a shim brazed to the top of the seat tube.
I think the Ragley seat tubes were that at one point. I had shims made to fit them to normal clamps.
The Stif Morf would have the same problem but has a shim brazed to the top of the seat tube.
Worth knowing - cheers Brant.
I think the Ragley seat tubes were that at one point. I had shims made to fit them to normal clamps.
The Stif Morf would have the same problem but has a shim brazed to the top of the seat tube.
[url= http://www.chainreactioncycles.com/ragley-seat-clamp-shim/rp-prod80055 ]http://www.chainreactioncycles.com/ragley-seat-clamp-shim/rp-prod80055[/url]
Perfect! 0.1mm bigger as tube is painted 🙂
My Pipedream Skookum requires a 33mm clamp. KCNC make one >>>
https://clee-cycles.co.uk/P913/product
Ti bolt too for extra points
That looks spot on. Cheers!
Edit: link to clamp posted while writing this. Fortunately the above can apply to both the clamp and the shim.
Braze-on binder bolt is the easiest option to get around the weird OD, no?...
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Paul Component do a 33.1mm QR seat collar:
https://paulcomp.com/shop/components/skewers/quick-release-seat-post-collar/
I'm still looking for a non-QR one that will clamp strong like the Thompson collars.