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  1. #1
    Senior Member
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    Am I wrong about what chain to use?

    I'm hoping to use as many parts already on hand as possible in building a new lower-end MTB; cost is an issue here. Do I have the drivetrain figured out correctly?

    I have on hand:
    • Mavic Crossland rear wheel (8-9 speed freehub) w/4.5mm spacer + 7-speed Shimano 13-30 cassette.
    • Shimano Deore LX RD-M581-SGS Rear Derailleur (8-9 speed compatible)
    • SRAM X0 Front Derailleur (44/32/22T 9 Speed compatible)
    • Shimano HG-70 6/7/8-speed chain
    • SRAM HST 7-speed grip shifters


    I am planning to buy:
    • Shimano FC-M443 Crankset w/Bottom Bracket (9-speed chain compatible)


    I'm happy with the 7-speed cassette for now. From what I've read here and elsewhere, the front derailer and chainrings may have minor spacing width issues with a 6/7/8-speed chain, so I should plan on buying a 9-speed chain instead and not use my current chain, right? Also, if there's a better crankset/BB for the same or lower price, please feel free to make suggestions.

  2. #2
    Senior Member Deanster04's Avatar
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    Dec 2005
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    Boulder, Colorado
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    Cinelli Supercoursa 69, Ritchey Breakaway Cross, Mondonico Diamond Extra 05, Coors Light Greg Lemond (built by Scapin) 88, Scapin MTB, Stumpjumper 83, Specialized Stumpjumper M4, Lemond Poprad 2001
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    I think you may be ok with that chain on that setup you have. Try it and see if there is a problem. If you do need another chain then buy it. Good luck.
    Last edited by Deanster04; 05-26-08 at 12:42 AM.

  3. #3
    100% USDA certified the beef's Avatar
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    Feb 2006
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    Seattle -> NYC
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    Bianchi XL EV2
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    I would tend to go with the 9-speed chain because of the FD issue. You will get more chain/cage rub than is desirable when your chain is too wide (happened to me). A 9-speed SRAM chain can be had for $20-$30.

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