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Nbudor
I'm still waiting for bsa 30mm ibottom bracket, but I mounted fsa omega 48t ring on sram 120/80 spider . It fits but with gxp spider that I have crank is pretty cose to chainring. Since I got the spider with 42/28 combo for 12 bucks, I can experiment with it.
I think North shore billet 104bcd 2x spider for x0 will be the best for our purpose here, as it has corrected chainline and there are so many chainring options to choose from.
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bnystrom
I contacted the folks at NSB last week and they told me that their 104 BCD spider will provide the same chainline as a standard MTB crank, which is 48/49mm for a double (44 on the inner ring, 52 on the outer). If that's what you need, you're all set.
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Nbudor
A little update. I mounted NSB spider with 46/30 chainrings, but i will have to use spacers for the chainrings because I get the chain rub in lowest gear no matter how I set the derailleur. Btw, I really love the new Ultegra fd r8000 front derailleur!
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Nbudor
A little update. I mounted NSB spider with 46/30 chainrings, but i will have to use spacers for the chainrings because I get the chain rub in lowest gear no matter how I set the derailleur. Btw, I really love the new Ultegra fd r8000 front derailleur!
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hub
what was  bcd=? on nsb spider to get 46/30 ?
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Nbudor
104/64 bcd spider, for gxp cranks. Blackspyre outer, TA inner chainring.
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