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.