Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member ph4nt0mf1ng3rs's Avatar
    Join Date
    Nov 2009
    My Bikes
    Iro Mark V
    Posts
    516
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Sugino 75 compatibility

    The Sugino 75 Crankset.

    First of all...i was on Benscycle, and saw the Sugino 75 Cranks and was in awe. That crank cost more than my frame. WTH.

    In any case, my amigo says he bought a cinelli vigorelli frame that came with a Sugino 75bb with which his Sugino RD2 cranks did not fit.

    So i thought he might not be doing something right. While looking up specs on both his cranks and the Sugino 75 crankset (not the BB lol), the interfaces were the same. Square taper JIS etc. If thye were the same, they should fit the same bottom bracket....idk whats up. Maybe we're doing somethign wrong, maybe there was something lost in some sort of incorrect terminology.

    Basic problem: Sugino 75 Bottom Bracket was not working with the RD2 crankset, also made by Sugino.

    Thanks guys.
    Quote Originally Posted by Vixtor View Post
    Seriously, I wouldn't trust it at all.

    phatomfingers would be interested in this.

  2. #2
    Senior Member ph4nt0mf1ng3rs's Avatar
    Join Date
    Nov 2009
    My Bikes
    Iro Mark V
    Posts
    516
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If im not mistaken, it might be the difference between JIS and ISO?

    I was looking on sheldon brown, and Sugino 75 falls under ISO, while RD2 cranks have JIS interfaces....I believe I found my problem. But I need confirmation of this. Never run into this problem XD.
    Quote Originally Posted by Vixtor View Post
    Seriously, I wouldn't trust it at all.

    phatomfingers would be interested in this.

  3. #3
    GONE~
    Join Date
    Apr 2010
    Posts
    6,745
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by ph4nt0mf1ng3rs View Post
    If im not mistaken, it might be the difference between JIS and ISO?

    I was looking on sheldon brown, and Sugino 75 falls under ISO, while RD2 cranks have JIS interfaces....I believe I found my problem. But I need confirmation of this. Never run into this problem XD.
    You are right. Sugino 75 uses ISO where RD uses JIS.

    From Sheldon:
    ISO cranks (Campagnolo, Stronglight, others) won't go as far onto J.I.S. spindles as they ideally should.

    J.I.S. cranks (most Japanese models) may bottom out if installed on ISO spindles.

    In practice, you can very often get away with mixing these sizes, as long as you select an axle length that gives the desired chainline.

  4. #4
    Senior Member Steev's Avatar
    Join Date
    Jul 2005
    Location
    Backwoods of Ontario
    Posts
    2,130
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    There's more to specifying a square taper/bb interface than the taper type.
    You must also have the correct spindle length for the crankset you are using.

  5. #5
    Veteran Bastard Scrodzilla's Avatar
    Join Date
    May 2009
    Location
    San Diego, CA
    Posts
    24,089
    Mentioned
    22 Post(s)
    Tagged
    2 Thread(s)
    Just because the two things are made by Sugino doesn't make them compatible.

    RD2 takes a 103mm BB to get a respectable chainline. Using a 109mm 75 BB with the wrong spindle interface is just silly.

  6. #6
    Senior Member ph4nt0mf1ng3rs's Avatar
    Join Date
    Nov 2009
    My Bikes
    Iro Mark V
    Posts
    516
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks guys. Btw. It wasn't my bike haha. Its not like he ordered 2 dif seperate items anyway. The vigorelli came with a BB already, and he tried to use the crank that he had from his current bike. XDthanks again
    Quote Originally Posted by Vixtor View Post
    Seriously, I wouldn't trust it at all.

    phatomfingers would be interested in this.

Posting Permissions

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