Advertise on Bikeforums.net



User Tag List

Page 1 of 2 12 LastLast
Results 1 to 25 of 27
  1. #1
    Veteran Bastard Scrodzilla's Avatar
    Join Date
    May 2009
    Location
    San Diego, CA
    My Bikes
    EAI Bare Knuckle / Leader 725 / 1975 Raleigh Professional Track
    Posts
    23,899
    Mentioned
    22 Post(s)
    Tagged
    2 Thread(s)

    Sugino RD users?

    I picked up a barely used set of Sugino RDs last night on the cheap for a project I'm helping a co-worker with (he's reimbursing me but I'm building his bike) and I know there are some wonky chainline issues surrounding this crankset but I'd like to hear from someone who is using them...is it really that bad?



    I've read some stuff on the interwebs that a 103mm BB will give a 45mm chainline with the ring on the inside, while other stuff I've read says it's 45 with the ring on the outside. I've also noticed that in just about every pic I see on VeloSpace and whatnot of bikes with RDs, the ring is properly placed on the outside (where I'd ultimately like it to end up). In fact, I haven't found one pic of a bike running the ring on the inside. What's the deal with these?
    Last edited by Scrodzilla; 12-08-09 at 06:50 AM.

  2. #2
    Senior Member filtersweep's Avatar
    Join Date
    Mar 2004
    Posts
    2,615
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I run it with the "matching" Sugino 103 BB--- and it is fine. I care less about the theoretical issues of chainline "as measured" and more about real-world effects. I run a 8-speed SRAM road chain, and my drive train is absolutely silent--- running on the outside of the spider.

    Realistically, I believe running with a 3/32" drive train, the world is quite forgiving. If you really want, I can measure the chainline.

    I suggest just building it up, and using the inside of the spider as a fallback strategy.

  3. #3
    Veteran Bastard Scrodzilla's Avatar
    Join Date
    May 2009
    Location
    San Diego, CA
    My Bikes
    EAI Bare Knuckle / Leader 725 / 1975 Raleigh Professional Track
    Posts
    23,899
    Mentioned
    22 Post(s)
    Tagged
    2 Thread(s)
    Right on. We're not too concerned with chainline being precisely straight but don't want it to completely suck either! The chainring it came with is 1/8" so I'll have to try that first.

  4. #4
    Senior Member Coomer's Avatar
    Join Date
    Nov 2008
    Location
    Seattle
    My Bikes
    '06 DK Cincinnati, '09 Mercier Kilo TT
    Posts
    155
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've run those cranks on my Pake with a 103mm bottom bracket, and the 103mm bottom bracket does give you a 42mm chainline with the chainring on the outside.

  5. #5
    Senior Member filtersweep's Avatar
    Join Date
    Mar 2004
    Posts
    2,615
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    How is that possible? Seriously.

    Quote Originally Posted by Coomer View Post
    I've run those cranks on my Pake with a 103mm bottom bracket, and the 103mm bottom bracket does give you a 42mm chainline with the chainring on the outside.

  6. #6
    Veteran Bastard Scrodzilla's Avatar
    Join Date
    May 2009
    Location
    San Diego, CA
    My Bikes
    EAI Bare Knuckle / Leader 725 / 1975 Raleigh Professional Track
    Posts
    23,899
    Mentioned
    22 Post(s)
    Tagged
    2 Thread(s)
    I don't think it's possible either. Everything I've read...even according to Sugino's site...states a 45mm chainline.

  7. #7
    Veteran Racer TejanoTrackie's Avatar
    Join Date
    Jul 2009
    Location
    Ciudad de Vacas, Tejas
    My Bikes
    28 frames + 73 wheels
    Posts
    7,408
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I run mine with a Sugino 103 BB and the CR on the outside, and get a visually perfect chainline and very silent running.

  8. #8
    thread derailleur erichsia's Avatar
    Join Date
    May 2008
    Location
    beyond Thunderdome
    My Bikes
    82 Bianchi ECO Pista, Pake, Kilo TT, some *** bmx i found underneath an old house
    Posts
    1,095
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've never had a problem with the chainline, but I've never measured it either. Sugino's website says 45mm chainline with a 103bb: http://www.suginoltd.co.jp/japan/sin...list_japan.htm
    If you use a 107bb and put the chainring on the inside, that will give you a 42mm chainline. But according to Sheldon, your hub/cog chainline stands a good chance of being closer to 43mm or greater anyways: http://www.sheldonbrown.com/chainline.html, and a difference of 1-2 mm isn't really going to be noticeable.

  9. #9
    Senior Member filtersweep's Avatar
    Join Date
    Mar 2004
    Posts
    2,615
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Scrodzilla View Post
    I don't think it's possible either. Everything I've read...even according to Sugino's site...states a 45mm chainline.
    It is 45 on mine. I was disappointed, as I fell for the marketing fluff of some website where I bought it---- something like "for the perfect chainline, try our matching Sugino 103 BB" or something to that effect. But functionally, all is well.

  10. #10
    Senior Member Deshi's Avatar
    Join Date
    Sep 2007
    Location
    Scottsdale, AZ
    My Bikes
    2009 Pake in Deep Purple, 1986 Pinarello Pista 195? Raleigh 3sp, 2003 Intense M1, 2003 Giant Yukon SS, 2010 Premium Deathtrap
    Posts
    1,587
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I run it on my Pake with the 103mm bb and the ring on the outside. I run a Sram 9sp chain on a Dura-Ace cog. The drivetrain is not completely silent but there are no issues. I dont mind a little noise.
    Quote Originally Posted by PedallingATX View Post
    dude...you can't "no ****" something THAT ****. That's like saying "sometimes I just like to make out with dudes...no ****"

  11. #11
    Veteran Bastard Scrodzilla's Avatar
    Join Date
    May 2009
    Location
    San Diego, CA
    My Bikes
    EAI Bare Knuckle / Leader 725 / 1975 Raleigh Professional Track
    Posts
    23,899
    Mentioned
    22 Post(s)
    Tagged
    2 Thread(s)
    Thanks for the info/feedback guys. I know it won't be a big deal to be off by a few mm. Once my buddy's wheelset arrives on Thursday, I'll give it a go with a 103mm BB. I've got a 1/8" chainring & chain on hand - would it help in this instance to use a 3/32" cog or should it not matter?

    edit: Deshi - I checked out your Pake on VeloSpace. Your chainline looks damn good.
    Last edited by Scrodzilla; 12-08-09 at 04:24 PM.

  12. #12
    Senior Member
    Join Date
    Jun 2008
    Location
    Chicago, IL
    Posts
    515
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    They are fine with the 45mm chainline. Depending on the hub and cog combo, you will have a chainline ranging from 41-43mm.

  13. #13
    Senior Member Coomer's Avatar
    Join Date
    Nov 2008
    Location
    Seattle
    My Bikes
    '06 DK Cincinnati, '09 Mercier Kilo TT
    Posts
    155
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'm pretty sure it was a 42mm chainline with the 103mm BB and chainring on the outside. My girlfriend's bike has RD2 cranks on it with a 103mm Sugino BB and the chainring on the outside. I'll measure the chainline and take photos tonight.

  14. #14
    Veteran Bastard Scrodzilla's Avatar
    Join Date
    May 2009
    Location
    San Diego, CA
    My Bikes
    EAI Bare Knuckle / Leader 725 / 1975 Raleigh Professional Track
    Posts
    23,899
    Mentioned
    22 Post(s)
    Tagged
    2 Thread(s)
    Right on, man. Thanks!

    My friend at work has been into bikes for a long time (BMX) but this is his first fixed gear and I don't want to end up building something he'll have trouble with.

  15. #15
    On Two Wheels sam83's Avatar
    Join Date
    Mar 2005
    Location
    Middle Tennessee
    My Bikes
    Moots Vamoots, Bianchi Volpe, 2 Salsa Casserolls (fixed & Triple), 2011 Salsa Chili Con Crosso, 1983 Schwinn Supersport, Schwinn Mesa MTB
    Posts
    511
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've got a stock Salsa Casseroll that has a Sugino RD2 on a 103 BB. The stock hub is a 130 Surly new hub with a chainline of 47.5. That hub is not a re-spaced track hub and the 47.5 chainline was verified by Surly and is about what I eyeball it.

    The chainring is mounted to the outside, and appears to be close to 46/47. Looks pretty lined up to me, is quiet, and has given me no problems over the 1200+ miles I've had it. But I'm no expert.

  16. #16
    Wil
    Wil is offline
    Brake chatter on CX forks Wil's Avatar
    Join Date
    Aug 2004
    Location
    Toronto, ON
    My Bikes
    '04 Kona Jake, '05 Kona Stuff, '07 Specialized Langster
    Posts
    106
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by filtersweep View Post
    How is that possible? Seriously.
    The chainline on his Paul's hub is NOT 42mm, it is in fact 44mm. http://www.paulcomp.com/highflangerear.html

    That is why it's straight, or damn near straight.
    Last edited by Wil; 12-08-09 at 10:38 PM. Reason: Clarity

  17. #17
    Senior Member Coomer's Avatar
    Join Date
    Nov 2008
    Location
    Seattle
    My Bikes
    '06 DK Cincinnati, '09 Mercier Kilo TT
    Posts
    155
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Wil View Post
    The chainline on his Paul's hub is NOT 42mm, it is in fact 44mm. http://www.paulcomp.com/highflangerear.html

    That is why it's straight, or damn near straight.
    Damn, you're absolutely right. I knew it was a perfect chainline, but forgot about the weird spacing on the Paul hub. Sorry for posting misinformation.

  18. #18
    Senior Member filtersweep's Avatar
    Join Date
    Mar 2004
    Posts
    2,615
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Deshi View Post
    I run it on my Pake with the 103mm bb and the ring on the outside. I run a Sram 9sp chain on a Dura-Ace cog. The drivetrain is not completely silent but there are no issues. I dont mind a little noise.
    As for Deshi, I don't exactly know why, but in my experience, 9-speed chains just don't seem to work as well as 8-(7-6)s.

  19. #19
    Member
    Join Date
    Jul 2009
    Location
    Atlanta
    Posts
    44
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'm running the RD2s with the chainring on the outside, a matching sugino 103BB, 1/8" SRAM PC-1, and Novatec sealed high flange hubs. Chainline comes in exactly at 45mm. Chain is dead silent unless I am resisting.

  20. #20
    * adriano's Avatar
    Join Date
    Nov 2008
    Location
    Baltimore
    My Bikes
    http://velospace.org/node/18951
    Posts
    6,890
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    road double cranks are the best quality for your dollar.

  21. #21
    Veteran Bastard Scrodzilla's Avatar
    Join Date
    May 2009
    Location
    San Diego, CA
    My Bikes
    EAI Bare Knuckle / Leader 725 / 1975 Raleigh Professional Track
    Posts
    23,899
    Mentioned
    22 Post(s)
    Tagged
    2 Thread(s)
    They were 35 bucks.

  22. #22
    * adriano's Avatar
    Join Date
    Nov 2008
    Location
    Baltimore
    My Bikes
    http://velospace.org/node/18951
    Posts
    6,890
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Scrodzilla View Post
    They were 35 bucks.
    thank you for illustrating my point.

  23. #23
    Veteran Bastard Scrodzilla's Avatar
    Join Date
    May 2009
    Location
    San Diego, CA
    My Bikes
    EAI Bare Knuckle / Leader 725 / 1975 Raleigh Professional Track
    Posts
    23,899
    Mentioned
    22 Post(s)
    Tagged
    2 Thread(s)
    Hahaha!

  24. #24
    Wheelnut phyko's Avatar
    Join Date
    Dec 2009
    Location
    Washington DC
    My Bikes
    Salsa Casseroll
    Posts
    53
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by sam83 View Post
    I've got a stock Salsa Casseroll that has a Sugino RD2 on a 103 BB. The stock hub is a 130 Surly new hub with a chainline of 47.5. That hub is not a re-spaced track hub and the 47.5 chainline was verified by Surly and is about what I eyeball it.

    The chainring is mounted to the outside, and appears to be close to 46/47. Looks pretty lined up to me, is quiet, and has given me no problems over the 1200+ miles I've had it. But I'm no expert.
    +1

    I have the same bicycle except mine is not stock. I have a Sugino 103 BB and the Sugino RD2 cranks. I have a chainline of 45 on the outside. Maybe 46. I wear glasses, so my eyesight is not the best.

  25. #25
    On Two Wheels sam83's Avatar
    Join Date
    Mar 2005
    Location
    Middle Tennessee
    My Bikes
    Moots Vamoots, Bianchi Volpe, 2 Salsa Casserolls (fixed & Triple), 2011 Salsa Chili Con Crosso, 1983 Schwinn Supersport, Schwinn Mesa MTB
    Posts
    511
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by phyko View Post
    +1

    I have the same bicycle except mine is not stock. I have a Sugino 103 BB and the Sugino RD2 cranks. I have a chainline of 45 on the outside. Maybe 46. I wear glasses, so my eyesight is not the best.
    Took another look at my Casseroll and it sure looks to be a little over 46mm. However, there is a bracket (for a chain guard) that is between the bottom bracket shell and the bottom bracket. I just left it there until I do a major overhaul.

    The bracket is a little over 1mm thick. So if the chainline is normally 45mm, I think this "spacer" explains why mine is a little over 46mm.

Page 1 of 2 12 LastLast

Posting Permissions

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