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  1. #1
    Downhill fan
    Reputation: #Cyclelife's Avatar
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    Jul 2009
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    Old Shimano to New Sram setup (1x9 Drive train) on my XC/Trailbike

    I finally swapped all my VERY old Shimano drive train with new Sram parts (Sram 11-32 rear cassette, Sram PC991 chain, Truvativ cranks, Raceface 32T chain ring, MRP chain guide, X7 shifter and Med cage X5 rear derailleur). Seems to be a bit of slack on the chain on the smallest rear cog/rubbing!! I popped on a 36t front ring and its better now. Is a 36t (front) with a 11-32 (rear) a good setup for trail/XC riding? If I should go back to the 32T should I have the chain shortened? Thanx for any advice! BTW, this was a shimano 24 speed 3x8 now going Sram 1x9. I never used anything but the middle 32T ring anyway.
    I'm thinking about shreddin' it up right now!
    Giant Glory DH (custom)
    K2 Evo 4.0 FS XC (custom)

  2. #2
    mtbr member
    Reputation: 006_007's Avatar
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    Jan 2004
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    8,153
    Doesnt matter what others feel is a good gear combo - if it is a good combo for you and you are comfortable spinning it then use it.

    A great way to get proper chain length is to route the chain from your biggest cog on the rear to the biggest on the front (in your case the only on the front) and add two full links.

    Couple of good sites that describe this is Sheldon Brown-Bicycle Technical Information and Park Tool Co. Park Tool Co.

  3. #3
    Downhill fan
    Reputation: #Cyclelife's Avatar
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    I was always comfortable using the 32T up front but wasn't sure if the 36 was too much. I am going from a 3x8 (32T center ring) w/11-30 to a 1x9 (36T front ring) w/11-32 so I am figuring them to be close enough to not kill me on long hilly rides LOL.
    I'm thinking about shreddin' it up right now!
    Giant Glory DH (custom)
    K2 Evo 4.0 FS XC (custom)

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