Advertise on Bikeforums.net



User Tag List

Results 1 to 18 of 18
  1. #1
    Senior Member
    Join Date
    Oct 2007
    Location
    Washington, DC
    My Bikes
    CAAD10 5, Trek 1000 Alpha Series
    Posts
    567
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    going 1x on my cross bike

    I currently have a compact double and was thinking of going 1x9 on my cross bike. I assume I need a new crankset. Do people ever use track cranksets for this purpose?

  2. #2
    Senior Member
    Join Date
    Jul 2007
    Posts
    2,063
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    You don't need a new crankset.

    A lot of people are attracted to a single-ring because of the "simplicity" but you trade one set of problems for another. What's your current gearing? If you have 50/34, then try the Shimano CX70 46/36 rings.

  3. #3
    Senior Member
    Join Date
    Oct 2007
    Location
    Washington, DC
    My Bikes
    CAAD10 5, Trek 1000 Alpha Series
    Posts
    567
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    buying new rings is almost as much as buying a new crank plus i'm planning on using that crank for another bike.

  4. #4
    I love the rolling hills. ThermionicScott's Avatar
    Join Date
    Aug 2011
    Location
    CID
    My Bikes
    1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX
    Posts
    11,092
    Mentioned
    23 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by aquateen View Post
    I currently have a compact double and was thinking of going 1x9 on my cross bike. I assume I need a new crankset. Do people ever use track cranksets for this purpose?
    Historically (1x is NOT a new idea for cyclocross racing), people used their old crankset and substituted a big ring with no teeth to help prevent dropping the chain to the outside.

    A track crank would look pretty, but wouldn't function as well on rough ground without a narrow-wide chainring or chain keeper.
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

  5. #5
    Senior Member
    Join Date
    Oct 2007
    Location
    Washington, DC
    My Bikes
    CAAD10 5, Trek 1000 Alpha Series
    Posts
    567
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by ThermionicScott View Post
    Historically (1x is NOT a new idea for cyclocross racing), people used their old crankset and substituted a big ring with no teeth to help prevent dropping the chain to the outside.
    wouldn't there be issues here with chain line? that's why i figured a track crank might suffice

  6. #6
    Senior Member
    Join Date
    Apr 2005
    Location
    Cleveland
    My Bikes
    Pugsley, fixie commuter, track bike
    Posts
    1,590
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You don't need a new crankset, you will want a narrow wide chain ring, chain keeper or clutch derailleur. You can get by with just losing the front derailleur and one chain ring but my experience is that you will drop the chain too often with that combination.
    Best choice is narrow wide and clutch derailleur but just a narrow wide should be sufficient.
    Most 1X cranksets are just double cranksets with a single narrow wide ring installed.

    Craig

  7. #7
    Senior Member
    Join Date
    Apr 2005
    Location
    Cleveland
    My Bikes
    Pugsley, fixie commuter, track bike
    Posts
    1,590
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by aquateen View Post
    wouldn't there be issues here with chain line? that's why i figured a track crank might suffice
    Track bikes use a different chain line than derailleur based bikes. The rear hub on a track bike is only 120mm wide instead of the 130 or 135 of road and MTB bikes respectively.

  8. #8
    Senior Member
    Join Date
    Oct 2007
    Location
    Washington, DC
    My Bikes
    CAAD10 5, Trek 1000 Alpha Series
    Posts
    567
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    gotcha. i didn't even think about the difference in hub spacing

  9. #9
    Senior Member
    Join Date
    Jul 2007
    Posts
    2,063
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by CBBaron View Post
    Best choice is narrow wide and clutch derailleur but just a narrow wide should be sufficient.
    Multiple guys I know have dropped chains during races with narrow-wide and standard der. "Oh, I've tested it out, it works great!"

    A cheap reliable setup is BBG bashguard on the outside of spider, singlespeed chainring (i.e. no ramps or pins etc), and N-Gear Jump Stop clamped to the seattube. I ran that for 2 or 3 seasons with no problems. I currently prefer 2x10 with 36/46 or 34/44, though.

  10. #10
    I love the rolling hills. ThermionicScott's Avatar
    Join Date
    Aug 2011
    Location
    CID
    My Bikes
    1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX
    Posts
    11,092
    Mentioned
    23 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by flargle View Post
    You don't need a new crankset.

    A lot of people are attracted to a single-ring because of the "simplicity" but you trade one set of problems for another. What's your current gearing? If you have 50/34, then try the Shimano CX70 46/36 rings.
    I forgot to +1 this the first time around. A regular front derailleur is the best chain keeper, and a set of "cyclocross chainrings" would probably do the trick.
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

  11. #11
    Senior Member justin1138's Avatar
    Join Date
    Apr 2013
    Location
    Portland, OR
    My Bikes
    90's F. Moser Forma, 2011 Raleigh RX 1.0, 70's Sekai Touring Series, 1998 Gary Fisher Aquila,
    Posts
    196
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by aquateen View Post
    I currently have a compact double and was thinking of going 1x9 on my cross bike. I assume I need a new crankset. Do people ever use track cranksets for this purpose?
    You probably want a crankset with a 110bcd or 130bcd so you can use a narrow wide chainring. I haven't seen any made with the 144bcd (most track cranks). That, and the 144bcd would limit your choice of front chainrings to 42? You may or may not want to go smaller then that. Your current cranks are probably fine, and all you would need to do to get going is get an appropriate chainring, get rid of all the stuff you aren't going to use anymore, shorten the chain and ride.

    Like others mentioned, there are a few different ways to keep your chain on the bike. I'm in the camp that feels the wide narrow chainring works without further stuff. I've dropped more chains with my bike as 2x than with my bike as a 1x.

    And a new chainring isn't going to cost you nearly as much as a new crankset, unless you're going really cheap on the crankset. And then you'd still need a better chainring anyway, or a bunch of stuff to keep your chain on...
    where's my two dollars...

  12. #12
    Senior Member
    Join Date
    Oct 2007
    Location
    Washington, DC
    My Bikes
    CAAD10 5, Trek 1000 Alpha Series
    Posts
    567
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    got it, thanks

  13. #13
    Senior Member
    Join Date
    Jan 2010
    Posts
    376
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The 1x setup looks cool on a cross bike. That is all I have to input here.

  14. #14
    hup
    hup is offline
    Senior Member hup's Avatar
    Join Date
    Sep 2008
    Location
    Central Valley CA
    My Bikes
    '04 Serotta CIII, '01 Lemond Poprad, '10 Look 566, mid 90s Burley Rock N Roll Tandem, Old School Specialized HardRock, '15 GT Grade alloy
    Posts
    281
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    This is a 130bcd Ultegra crank with a plain old 38t inner ring, BBG 38t bash guard, and dog fang chain keeper. I don't race, but have been through some pretty mucky mud and snow and the chain has not come off (yet). YMMV.
    1x9 11-34 w/ XT RD, Dura Ace 9 sp bar end shifter.



  15. #15
    Senior Member Kopsis's Avatar
    Join Date
    Apr 2008
    Location
    St. Pete, Florida
    Posts
    864
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by flargle View Post
    Multiple guys I know have dropped chains during races with narrow-wide and standard der. "Oh, I've tested it out, it works great!"
    Yep, been there, done that Setup was fine using a wide/narrow with road RD until I hit a course that had a section of fast singletrack with some big roots. Dropped the chain three times in one race. Switched to an X7 clutch RD and haven't had a single drop in the dozen or so races since.

  16. #16
    Senior Member
    Join Date
    Jul 2007
    Posts
    2,063
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Kopsis View Post
    Yep, been there, done that Setup was fine using a wide/narrow with road RD until I hit a course that had a section of fast singletrack with some big roots. Dropped the chain three times in one race. Switched to an X7 clutch RD and haven't had a single drop in the dozen or so races since.

  17. #17
    Senior Member justin1138's Avatar
    Join Date
    Apr 2013
    Location
    Portland, OR
    My Bikes
    90's F. Moser Forma, 2011 Raleigh RX 1.0, 70's Sekai Touring Series, 1998 Gary Fisher Aquila,
    Posts
    196
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Kopsis View Post
    Yep, been there, done that Setup was fine using a wide/narrow with road RD until I hit a course that had a section of fast singletrack with some big roots. Dropped the chain three times in one race. Switched to an X7 clutch RD and haven't had a single drop in the dozen or so races since.
    maybe it's the SRAM derailleurs that like to drop chains then...
    where's my two dollars...

  18. #18
    Junior Member
    Join Date
    Jun 2015
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I have a SRAM Rival crankset - took the large ring off and threw on a BBG bashgaurd and have been riding/racing it for several years with no issues.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •