Carlton_gang
Dirt Disciple
Hi everyone, I have just purchased a tandem as some of you know, and in the process of smartening it up, I removed and cleaned the freewheel, and replaced the chain.
The issue is that, when in the 3rd biggest (in size) cog, the chain rattles and pings on the next largest cog. The freewheel indexes perfectly with the shimano 7 speed, apart from in that cog. It will shift into it perfectly from the next smallest one, but from the next largest it will simply run over the top.
The issue appears to be that the cog is too close to the next largest one, but fine compared with the next smallest.
The B-limit is correct, and so is the chainlength, and it does it in every chainring.
I'm very confused, as it looks like the spacing is wrong, but why only in one gear. If this is normal for Sachs freewheels them please let me know. It's an early 90s ARIS one which uses the Shimano removal tool.
The issue is that, when in the 3rd biggest (in size) cog, the chain rattles and pings on the next largest cog. The freewheel indexes perfectly with the shimano 7 speed, apart from in that cog. It will shift into it perfectly from the next smallest one, but from the next largest it will simply run over the top.
The issue appears to be that the cog is too close to the next largest one, but fine compared with the next smallest.
The B-limit is correct, and so is the chainlength, and it does it in every chainring.
I'm very confused, as it looks like the spacing is wrong, but why only in one gear. If this is normal for Sachs freewheels them please let me know. It's an early 90s ARIS one which uses the Shimano removal tool.