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I'm currently rocking about 0.5mm from spider to chainstay on my T3, it's worth worrying about for the first ride, but if the paint is still there after that it's fine.
gbj_tester-
Yeah I recall this sort of discussion a while back. I've had the omniums in there for some time, but found they've scored a line into the powder coat. On closer inspection it looks like one of the spider arms is chunkier than the others, and it has very little clearance (less than half a mm).
I guess the 'problrm' isn't going to get worse but I'm still tempted to take the finish back to metal in that location just to check the damage is only in the powder. At that point I would probably need a new powder coat, which is fine as I was considering one anyway. Other options include:
-replace omnoms with a sram road crank? (Tempting as I plan to ride sscx on the bike too)
-replace omnoms with a shimano road crank (cheap option but I favour gxp systems)
-keep omnoms and have a framebuilder dimple the chainstay to get clearance
-unconnected to the points above but this could be a good time to ask a framebuilder to cold set the stays to 130 and maybe braze on some cable guides just for a hootAll these need to be played off against the cheapness of the frame. Which in turn needs to be balanced against the fact that they don't make 'em (v3 pomps) anymore. Ah, bikes. I do enjoy a trivial dilemma like this from time to time...
Cupcakes
Cheers. That's more clearance than I have... By about a millimetre!