Advertise on Bikeforums.net



User Tag List

Results 1 to 12 of 12
  1. #1
    Senior Member KoYak's Avatar
    Join Date
    Jul 2005
    Location
    loudoun County, VA
    My Bikes
    Iron Horse Warrior Expert, Dahon MU P8, Bacchetta Giro 26, HP Velotechnik Grasshopper
    Posts
    242
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Shimano to release 50/30 crank

    Thought this might be of interest to the long distant cycling crowd -

    Bike radar reports that shimano will be releasing a 50/30 cyclocross crankset.

    http://www.bikeradar.com/road/gear/a...rst-look-30616

    Look under the cyclocross heading near the bottom of the article.

    Has me interested.

  2. #2
    Senior Member bobbycorno's Avatar
    Join Date
    Sep 2007
    Posts
    2,545
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    From the look of that crankset, I'd say that "50/30" is a misprint. Looks like any other compact to me.

    SP
    Bend, OR

  3. #3
    4130 on 28's at 15 greaterbrown's Avatar
    Join Date
    Jul 2005
    Location
    Charm City
    Posts
    1,199
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Yeah. I was wondering that too. I don't know of any FD that can handle a 20T drop.
    2013: quit counting 2012 FG century count: 4 2011 century count: ~20 2010 mileage: 10,239 2009 mileage: 8127 2008 mileage: 7157

    Surly Cross Check - Kogswell P/R G2 - COHO
    THE RANDO RAMBLE . . . (blogs) . . . BIKING, BEER and TOAST

  4. #4
    Senior Member KoYak's Avatar
    Join Date
    Jul 2005
    Location
    loudoun County, VA
    My Bikes
    Iron Horse Warrior Expert, Dahon MU P8, Bacchetta Giro 26, HP Velotechnik Grasshopper
    Posts
    242
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by greaterbrown View Post
    Yeah. I was wondering that too. I don't know of any FD that can handle a 20T drop.
    many can...but usually require a middle/intermediate ring ;-). Kidding of course, but the just the idea of a 50/30 is nice. Actually, i would like a 46/30 crankset. I like the Velo Orange, but I think that one would look kind of funny on my CR1.

  5. #5
    Senior Member
    Join Date
    Sep 2006
    Location
    Van BC
    Posts
    3,739
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by KoYak View Post
    many can...but usually require a middle/intermediate ring ;-). Kidding of course, but the just the idea of a 50/30 is nice. Actually, i would like a 46/30 crankset. I like the Velo Orange, but I think that one would look kind of funny on my CR1.
    White Industries' VBC is not un-beautiful on a modern frame. The Sugino OX81D is one great looking crank, too bad it's so damn expensive!

  6. #6
    Senior Member Homeyba's Avatar
    Join Date
    Jul 2009
    Location
    Central Coast, California
    My Bikes
    Colnago C-50, Calfee Dragonfly Tandem, Specialized Allez Pro, Peugeot Competition Light
    Posts
    3,370
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by greaterbrown View Post
    Yeah. I was wondering that too. I don't know of any FD that can handle a 20T drop.
    I run a 60/42/32 on my tandem with no problem at all. That's only a two tooth difference. I bet it'll work fine.
    It doesn't get harder, you just go slower.

  7. #7
    Professional Fuss-Budget Bacciagalupe's Avatar
    Join Date
    Aug 2005
    Posts
    6,203
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    I don't think it's a misprint.

    I probably wouldn't use it, though. I already need to shift the RD two steps almost every time I shift the front of my compact; going from 50-34 to 50-30 is too big a jump for my tastes, I'd rather stick to a triple.

  8. #8
    Gear Combo Guru Chris_W's Avatar
    Join Date
    May 2007
    Location
    Switzerland
    My Bikes
    Spec' Tarmac (road), Spec' Secteur Disc (commuter & tourer), Salsa Mamasita (MTB), CoMo Speedster (tandem), Surly Big Dummy (cargo), Airnimal (folder), a train pass, and NO car :)
    Posts
    2,008
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Almost certainly a typo. Shimano has announced some new CX-specific cranksets that will be available later this year, labeled CX50 and CX70, but they appear to come equipped with 36/46 chainrings, see this other recent post at Bikeradar.

  9. #9
    Senior Member
    Join Date
    Jan 2006
    Location
    Vancouver, BC
    My Bikes
    2008 Turner Spot, Berg Ti Cross, 2011 Karate Monkey
    Posts
    150
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Que?

    Did you just say that?

    Quote Originally Posted by mander View Post
    .. is not un-beautiful

  10. #10
    Senior Member bobbycorno's Avatar
    Join Date
    Sep 2007
    Posts
    2,545
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by greaterbrown View Post
    Yeah. I was wondering that too. I don't know of any FD that can handle a 20T drop.
    Well, my old (OLD!) Campy Record (aka NR), handles a 46/28 just fine, with room to spare.

    SP
    Bend, OR

  11. #11
    Senior Member
    Join Date
    Apr 2005
    Posts
    734
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Most likely a misprint. I don't think that I have ever seen a cross crank with a 50 tooth. That is a bit big. I haven't seen a pro run one that large.

  12. #12
    Senior Member
    Join Date
    Dec 2006
    Location
    Columbus, Ohio
    My Bikes
    Serotta Colorado III Track (Renyolds Ouzo Pro Aero Fork, Dura-Ace to Mavic CXP-14 wheels, Sugino crank, Thomson and 3T the rest), Steelman Cyclocross (Campy Record 10, Deda Newton & Thomson stuff)
    Posts
    445
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    A few reasons it's likely a typo. They couldn't do this with 110BCD, first of all, and second, there's no way they would endorse that much of a jump for the FD. It can work, I run 48/30 on a WI VBC crank, but it's never going to be ideal. Certainly never as fast or well as all other Shimano products shift.

    I've also met someone who ran a 48/28 on a TA crank, but using friction shifting. With big jumps you just can't expect a fast shift, and should plan your gears accordingly.

Posting Permissions

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