Advertise on Bikeforums.net



User Tag List

Results 1 to 10 of 10
  1. #1
    GreenwayRider
    Join Date
    Sep 2007
    Location
    Selma, Indiana
    My Bikes
    Novara Safari, Rivendell Atlantis (on order), Schwinn Frontier, Unvigea Tandem
    Posts
    40
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Crank for a Atlantis

    I need some advice on crank gearing for a my new Atlantis frame. Rivendell recommends 46/36/24, however Peter White recommend a 46/34/22. Peter says better clearance between the chainrings and the chainstay can be obtained with this setup. I am pretty clueless when it comes to things like this, but I am concerned with chain suck. After looking at hundreds of pictures of the Atlantis on the internet I have noticed quite a few with paint damage on the gear side chainstay. I am paying extra to have my frame custom painted, so I would like to do whatever is necessary to prevent unnecessary paint damage.

  2. #2
    Senior Member
    Join Date
    Jun 2004
    Posts
    1,294
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    First off, there's little, if any differance between a the gearing you're looking in real life riding. I'd stick to a 46-36-26 myself, because that's Sugino makes that combo of chainrings ramped and pinned. The greater the number of teeth between chainrings, the more trouble you're going to have.

    Here's the crankset

    http://www.jensonusa.com/store/produ...s.aspx?sc=FRGL

    This stock crankset will work fine.

    Also get one of these to stop chain suck.

    http://www.benscycle.net/index.php?m...0&currency=USD

    My advice is to not make this any harder than it needs to be.

  3. #3
    Senior Member bornagainst's Avatar
    Join Date
    Oct 2006
    Location
    Minneapolis!
    My Bikes
    2005 Surly Steamroller, 2003 Surly Pacer, 2009 Surly LHT, 2010 Surly LHT, 2007 Surly CrossCheck, 1988 Schwinn Prologue
    Posts
    189
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Also if you plan on using a 110/74 bcd crank your inner chainring is limited to a 24t as they don't make 'em any smaller. If you want to go smaller you'll have to look into mountain cranks or much more expensive options(TA Zephyr -now discontinued, TA Carmina, NOS stuff, etc). You didn't say if you already have a crank or not(I'm assuming you don't) but the obvious bang for your buck(and availability) winner is the Sugino XD which I've seen offered in: 46/36/26, 46/36/24, and 48/36/24. The 22t small ring would be nice to have but is not all that much better than having the 24, IMO. If it's only chainstay to chainring clearance you're worried about why not get a 2-4mm longer BB(or just offset a Phil until the clearance is acceptable to you)?
    [SIGPIC][/SIGPIC]
    Quote Originally Posted by Catnap View Post
    maybe you sharted when you were straining to clear that last hill...

  4. #4
    Senior Member
    Join Date
    Jan 2007
    Location
    Ormond Beach, Florida
    My Bikes
    Atlantis, Jack Taylor
    Posts
    166
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I had the chain fall off my Atlantis a few times after I felt sure that the derailer was properly adjusted. It never occured to me that the paint would be damaged but I sincerely did not want to have the damn chain fall any more. My best guess was that the chain came off when it was at a lot of angle and that the solution was to up-shift the rear sprockets before moving the chain onto the big chainring. The chain has never come off in the year since.

  5. #5
    nun
    nun is offline
    Senior Member
    Join Date
    Oct 2005
    My Bikes
    Rivendell Quickbeam, Rivendell Rambouillet, Rivendell Atlantis, Circle A town bike, De Rosa Neo Primato, Cervelo RS
    Posts
    2,388
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I's stick with the Sugino in 46/36/24. I like to use TA rings so I buy the crank without the rings. If you want to stop dings on the chainstay use a chainstay protector.

    I use a 46/36/24 and 12/34 combo and I've never had the chain come off. You can limit that possibility by good FD adjustment and keeping cross chaining to a minimum.

  6. #6
    Senior Member metal_cowboy's Avatar
    Join Date
    Oct 2005
    Location
    Orting Wa.
    My Bikes
    Rivendell Atlantis, Rivendell Rambouillet, Co Motion Big A,l Klein Adroit
    Posts
    527
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Most of the chainsuck damage you see is from sloppy shifting. Get whatever you feel comfortable with and make sure you have your front deraillure set up correctly.

    Rivendell Alantis, Rivendell Rambouillet, Klein Adroit, Co Motion Big AL

  7. #7
    Senior Member metal_cowboy's Avatar
    Join Date
    Oct 2005
    Location
    Orting Wa.
    My Bikes
    Rivendell Atlantis, Rivendell Rambouillet, Co Motion Big A,l Klein Adroit
    Posts
    527
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Most of the chainsuck damage you see is from sloppy shifting. Get whatever you feel comfortable with and make sure you have your front deraillure set up correctly.
    Rivendell Alantis, Rivendell Rambouillet, Klein Adroit, Co Motion Big AL

  8. #8
    Senior Member
    Join Date
    Jul 2007
    Location
    Seattle, Washington, USA
    My Bikes
    2009 Chris Boedeker custom, 1988 Tommasini Prestige, 2007 Bill Davidson custom, 1985 Univega Gran Turismo; 1988 Specialized Stumpjumper
    Posts
    6,920
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can also install a chain deflector or "dog fang."

    http://smartbikeparts.com/search.php...b1602beed14cc6

  9. #9
    GreenwayRider
    Join Date
    Sep 2007
    Location
    Selma, Indiana
    My Bikes
    Novara Safari, Rivendell Atlantis (on order), Schwinn Frontier, Unvigea Tandem
    Posts
    40
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    All, thanks for the advice.

  10. #10
    Senior Member surreal's Avatar
    Join Date
    Mar 2002
    Location
    NJ
    Posts
    2,880
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    one other point to consider:

    depending on your FD, the 46/36/26 combo can be problematic. Some mtb-style FD's want a 12t jump between the big and mid ring for awesome shifting. the answer, of course, is to get the XD cranks, try em out, and if the shifting is consistently from the butt no matter how hard you tune, replace the 46t with a 48t. it worked for me, and look at me now: I'm a total hero.

    of course, if you're using a road triple FD, and with the atlantis, you probably would be, you won't have these embarassing problems. however, months later, someone with a mtn FD might be in a similar situation, and find this thread in a search. I want that someone to be covered!

    over n out.
    -rob

Posting Permissions

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