Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Senior Member
    Join Date
    Dec 2007
    Posts
    457
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Shimano six speed SIS question

    I am rebuilding an old Pinarello cyclocross bike. The hubs are WTB's with grease guards and are in very good condition. The freewheel is a Durace and is six speed. It had been set up with a SIS Deore XT shifter set on a flat bar. Did the old SIS set ups require a different chain? I bought what was called a six speed chain and it seems to shift just fine. However, when it is on the small chainring in the front, it appears to be rubbing slightly on the inside of the large chainring and crank. Do I need to switch to a more modern, narrower chain and if so, will a 7-8 speed SRAM or 9 speed SRAM work? I don't want to purchase several different chains if I can avoid it.

  2. #2
    cat person GlassWolf's Avatar
    Join Date
    Feb 2008
    Location
    N.W. Michigan
    My Bikes
    Nashbar Race SIS (1987), Kestrel Talon (2007), Trek Fuel EX 9.5 (2007)
    Posts
    509
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    my 6sp 600EX SIS setup never rubbed, but you could try a 7sp chain. nashbar has them for dirt cheap if you want to try a generic. they also accept returns if its not what you want or doesn't work.
    GlassWolf
    Organ Donors Save Lives.

  3. #3
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,410
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Any 7/8-speed chain will be perfectly satisfactory. It will be narrower than a true 6-speed chain.

  4. #4
    slow as I ever was Ex Pres's Avatar
    Join Date
    Dec 2007
    Location
    an imposter living in the 35223
    Posts
    5,652
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Bet you're using a modern crank with 14 tooth difference. Won't happen on an old 52/42 set-up, but can on a 53/39. Narrower 7/8s chain might help. (Or a longer spindle )

    And there are plenty of gear options on your big ring so you can avoid the small/small combination.
    72 special CNC ___________ 72 Frejus (ala Legnano) __73 Holdsworth Record
    78 Raleigh Professional_____ 80 Ranson_____________ 80 unknown French (SS)
    82 Peugeot PXN10_________83 Trek 620 (nee 600)____ 85 Gianni Motta
    85 Trek 560______________88 Guerciotti GLX
    90 Miele Gara_____________02 Casati Dardo (g/blue)__02 Casati Dardo (y/blk)
    03 Casati Dardo___________08 BF IRO (fixed)________10 Vassago Fisticuff (IGH)

  5. #5
    Senior Member
    Join Date
    Dec 2007
    Posts
    457
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Bob Barker View Post
    Bet you're using a modern crank with 14 tooth difference. Won't happen on an old 52/42 set-up, but can on a 53/39. Narrower 7/8s chain might help. (Or a longer spindle )

    And there are plenty of gear options on your big ring so you can avoid the small/small combination.
    Actually, my front combination is 48T and 36T with a rear freewheel of 13-14-15-16-17-18 and I've purchased a 14-16-18-21-24-28 to put on the back if I decide to change the corn cob that is on there. I'm picking up a 7-8 speed chain today.

Posting Permissions

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