Just throwing this out there .. 1Z1 is a 'rust-protected' chain. I wonder if the roller diameter is very slightly oversize as a result of the protection and once the protection is worn off the roller it will perform as normal.
On a 1/2" x 1/8" chain the nominal diameter should be 7.75mm.
Just throwing this out there .. 1Z1 is a 'rust-protected' chain. I wonder if the roller diameter is very slightly oversize as a result of the protection and once the protection is worn off the roller it will perform as normal.
On a 1/2" x 1/8" chain the nominal diameter should be 7.75mm.