Shimano vs SunTour freewheel spacing
#1
Senior Member
Thread Starter
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
Tim
#2
Senior Member
Join Date: Jan 2004
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
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
Tim
#3
Senior Member
Thread Starter
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.
Tim
#4
cycles per second
Join Date: Oct 2003
Location: Minnesota
Posts: 1,930
Bikes: Early 1980's Ishiwata 022 steel sport/touring, 1986 Vitus 979, 1988 DiamondBack Apex, 1997 Softride PowerWing 700, 2001 Trek OCLV 110
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 44 Post(s)
Liked 71 Times
in
48 Posts
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
Senior Member
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?
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
NFL Owner
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.