How tight is too tight?
Just mounted some 28's on the Merlin. They are plump. I have about 2-3mm to the chainstays. Thoughts? Brake bridge, front derailuer and fork are all good.
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As my grandfather used to say, "Tight is tight enough."
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2-3mm on each side should be fine as long as your rims stay straight and true.
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2-3mm is the just enough. Any less would be an issue.
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My rule of thumb is around 3mm for road and 5-6mm for mountain.
As stated, if its close, keep your rims true. |
Personally i would not do 2mm if i dident absolutely need to.
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Thought this was going to be about bibs :)
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Pictures?
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2 cents from me |
3 is better than 2...
SPP |
The stand won't reveal the answer. You're going to have to ride it and see. Out of the saddle efforts up a hill ought to tell you if there is enough room!
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can you indent the chainstays 1-2mm?
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Why is everyone going with these fat-assed tires? Guess I'm stuck in the old school...
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Ride 'em. Depending on how often the tire rubs the chainstay will allow you to judge what's acceptable. Just check them after every ride. Sooner or later you won't bother because it doesn't happen or, it happens and you search for skinnier tires.
If you're really worried about marring the chainstays, then put some duct tape at the potential contact points and let it sit for a few months. If the tire rubs the tape, the chainstay is spared and you have your answer. |
In my experience, 2 mm is enough to generate some rub, particularly if you stand up to pedal from time to time. What you ought to do is get some 25 or 27mm tubulars... Just have to mount them straight! :-)
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Thanks all.
Ti frame with large chainstays that are already crimped. I am going to run it for a bit. I dont think rub on raw Ti will be an issue. I will keep an eye on it. |
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I would get a tire that's 2 or 3 mm narrower and drop 2 or 3 psi. Then you get best of both worlds.
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Care to share which tire that is? |
Sometimes tight is a good thing :D
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I have that much clearance (or less) at the front brake caliper on the Oltre. Probably >5 at frame intersections, so not much concern over rub/frame damage, even for out of the saddle climbs/efforts. The worst of it is occasional mud gather on the caliper, which prompts me to stop and clear it with a stick. Ive been using this setup for a year with very little trouble, but that's in a SW climate. I recommend giving it a try.
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trouble if you break a spoke.....
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