Convert a SS to a 2 X 10?- Mtbr.com
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  1. #1
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    Convert a SS to a 2 X 10?

    Sorry to piss off SS fans, but I was wondering about converting a SS to a geared MTB. I have my eye on a 2008 Felt Nine Solo. Thought maybe I could buy a groupset and go geared. Worried, b/c the Felt 2008 catalog states that it has "Cold-Forged Vertical Single Speed Dropouts". Also has an "eccentric bottom bracket," and I don't know what that means. Please advise. Name:  felt_ninesolo_08_m.jpg
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  2. #2
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    No clue to the bike in question, but why even consider 2x drivetrain when 1x is all the rage these days? I can see why it's populair to do without the front derailleur.

  3. #3
    WillWorkForTrail
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    Why not just buy a bike with a 2x10 drive train? Add up the cost of a decent drive group, figure in the cost of the Felt, and you'll find your budget is probably sufficient to just buy a decent bike that comes with what you want.

  4. #4
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    i would just look for a geared bike. it will likely cost you less and be a lot less hassle.

    if you buy the single speed (assuming it is compatible with rear derailleur and cassette) you will also need to build a new rear wheel and buy new cranks and a full drivetrain.

    just look for a geared bike.
    Rigid SS 29er
    SS 29+
    Fat Lefty
    SS cyclocross
    Full Sus 29er (Yuck)

    Stop asking how much it weighs and just go ride it.

  5. #5
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    FYI the "vertical dropouts" are like the dropouts on a geared bike where the rear axle drops into. Non-adjustable in other words. This is opposed to horizontal dropouts which are slots that allow moving the axle forward or backwards to adjust chain tension, like the single-speed kids' bikes at Walmart.

    The "eccentric bottom bracket" permits chain adjustment. The crank is not mounted in the center of the bottom bracket shell, but offset a bit. By rotating the bottom bracket, you move the crank forward or backwards.

    This is the arrangement used to adjust the front chain on a tandem BTW.

  6. #6
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    I think setting up a front derailleur on a bike with an eccentric bottom bracket could be a giant pain. 1x10 would not be so bad though, if a dropout with a derailleur exists that has a derailleur hanger on it. otherwise, the cost of buying a new rear wheel, derailleurs, chain, cranks cassette, and shifters will put you well on your way to a new bike. better to cut your losses and sell that bike to fund the new one.

  7. #7
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    It may well have normal vertical dropouts but most probably won't have a rear mech hanger if it's designed as a dedicated singlespeed.
    So you'd have to find a way around that, for a start.

  8. #8
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    Okay--maybe a 1 x 10. But will a cassette fit back there??

    Quote Originally Posted by mack_turtle View Post
    I think setting up a front derailleur on a bike with an eccentric bottom bracket could be a giant pain. 1x10 would not be so bad though, if a dropout with a derailleur exists that has a derailleur hanger on it. otherwise, the cost of buying a new rear wheel, derailleurs, chain, cranks cassette, and shifters will put you well on your way to a new bike. better to cut your losses and sell that bike to fund the new one.
    Thanks for the replies, folks!! I'm learning so much.
    I love the idea of doing a 1 x 10 . I can get a nice XT 1 x 10 groupset for just $200, so why not? But will a cassette fit? Here's a pic: Name:  FeltSSrear.jpg
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  9. #9
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    Quote Originally Posted by Flydyl View Post
    Thanks for the replies, folks!! I'm learning so much.
    I love the idea of doing a 1 x 10 . I can get a nice XT 1 x 10 groupset for just $200, so why not? But will a cassette fit? Here's a pic: Name:  FeltSSrear.jpg
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    Would need to have a better look at your rear hub. If it's a dedicated SS hub (which it kinda looks like- a SS cassette style specifically) then you can't fit a 10 speed cassette on it and so would need a new rear wheel or hub.

  10. #10
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    Yes--I figured I might need to rebuild the rear with another hub (or find another wheel). Is there any chance that the frame is too narrow to accommodate a cassette?

  11. #11
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    Two more photos, if it helps you, good people:

    Convert a SS to a 2 X 10?-feltsolorear.jpgName:  felt_ninesoloframe_08_m.jpg
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  12. #12
    Wanna ride bikes?
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    Rigid SS 29er
    SS 29+
    Fat Lefty
    SS cyclocross
    Full Sus 29er (Yuck)

    Stop asking how much it weighs and just go ride it.

  13. #13
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    Reputation: life behind bars's Avatar
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    Internal gear hub would be the easiest way to do it without having to cobble something hideous. Have a look around here:

    Internal Gear Hubs - Mtbr.com

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