Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    cs1
    cs1 is offline
    Senior Member cs1's Avatar
    Join Date
    Feb 2004
    Location
    Clev Oh
    My Bikes
    Specialized, Schwinn
    Posts
    6,285
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    Shimano vs SunTour freewheel spacing

    As far as 7speed goes, do Shimano and Suntour use the same spacing? Or can I use a set of indexed Suntour 7speed shifters on a Shimano equipped 7speed bike?

    Tim
    1999 Waterford RSE-11, 1995 Waterford 1200, 1989 Specialized Rockhopper Comp
    1989 Raleigh Technium, 1989 Schwinn Traveler, 1986 Specialized Rockhopper
    1984 Specialized Stumpjumper, 1986 Specialized Stumpjumper and just way too many projects to list.

  2. #2
    Senior Member sydney's Avatar
    Join Date
    Jan 2004
    Posts
    9,428
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by cs1
    As far as 7speed goes, do Shimano and Suntour use the same spacing? Or can I use a set of indexed Suntour 7speed shifters on a Shimano equipped 7speed bike?

    Tim
    The suntour/shimano 7 speed index stuff is generally incompatible.Suntour used one spacing at the small end of the cassette and another at the big end. shifter pull and derailer throw are also different than Shimano. Having said that sometimes you get lucky and mixing the stuff will work or sorta work. If you got it, try it,but don't spend money on it. In order to get suntour index barcons to work on one shimano bike I have I aslo needed a suntour iindex RD.

  3. #3
    cs1
    cs1 is offline
    Senior Member cs1's Avatar
    Join Date
    Feb 2004
    Location
    Clev Oh
    My Bikes
    Specialized, Schwinn
    Posts
    6,285
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by sydney
    The suntour/shimano 7 speed index stuff is generally incompatible.Suntour used one spacing at the small end of the cassette and another at the big end. shifter pull and derailer throw are also different than Shimano. Having said that sometimes you get lucky and mixing the stuff will work or sorta work. If you got it, try it,but don't spend money on it. In order to get suntour index barcons to work on one shimano bike I have I aslo needed a suntour iindex RD.
    Thanks Sydney, somehow I knew you'd be the one to figure it out.

    Tim
    1999 Waterford RSE-11, 1995 Waterford 1200, 1989 Specialized Rockhopper Comp
    1989 Raleigh Technium, 1989 Schwinn Traveler, 1986 Specialized Rockhopper
    1984 Specialized Stumpjumper, 1986 Specialized Stumpjumper and just way too many projects to list.

  4. #4
    cycles per second Gonzo Bob's Avatar
    Join Date
    Oct 2003
    Location
    Minnesota
    My Bikes
    Vitus Aluminum, DiamondBack Apex, Softride Powerwing 700, "Generic" Ishiwata 022, Trek OCLV 110
    Posts
    1,790
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The cog spacing is not exactly the same but it is close. I've used Suntour freewheels in Shimano indexed drivetrains (both 6- and 7-speed) with no problems. But the cable pull requirements of the rear derailers are different and you will likely have difficultly mixing Shimano and Suntour shifters and rear derailers.

  5. #5
    Senior Member DannoXYZ's Avatar
    Join Date
    Jul 2005
    Location
    Saratoga, CA
    Posts
    11,507
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by cs1
    As far as 7speed goes, do Shimano and Suntour use the same spacing? Or can I use a set of indexed Suntour 7speed shifters on a Shimano equipped 7speed bike?
    Spacing's different. The Suntour spacing is closer together on the big cogs than Shimano while it's further apart on the small-cogs. You can kind of adjust the derailleur so that it works in the middle gears of the Sintour freewheel, and sacrifice the others. Or what I've done is removed the cogs on the Sintour freewheel, added 0.2mm shims between the big cogs to increase the spacing to Shimano specs. Then ground down the thicker spacers between the small cogs. This ends up creating a Suntour freewheel with Shimano spacing.

    However, the Suntour teeth profile is not as easy-shifting as the Shimano. So... I grind bevels into the corners of the teeth on the Suntour cogs so that they're angled, similar to the twisted testh on the Shimno freewheels.
    Last edited by DannoXYZ; 11-17-05 at 10:33 AM.

  6. #6
    NFL Owner monogodo's Avatar
    Join Date
    Sep 2004
    Location
    Irving Heritage District
    My Bikes
    7-Eleven Eddy Merckx, Vitus Futural, Catamount FRS, Colnago SL, SS MTB
    Posts
    1,487
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Back when I had a Suntour XC Pro-equipped bike, I got a set of wheels for it that were built up with a Shimano cassette hub. The only way I got it to work properly was to use Suntour cassette spacers between the Shimano cogs. It was the best shifting bike I've ever owned.
    198? Colnago Super (Campy Record) | 1989 Eddy Merckx 7-Eleven Team Issue (Dura Ace) | Catamount MFS (1x8) | Top Image Neptune (SS)

Posting Permissions

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