Sunstar – stamped, then machined on both sides
JT – stamped with no finishing process
Aluminum – wears out about twice as fast as steel sprocket
Here is a great link for chain and sprocket information:
Whoa – I knew that Clip-type master links were not so great – but I did not realize they are bad. You should use a riveting master link. I need to – as MJ said – “make that change”.
I use Maxima chain wax.
Sunstar – 1045 high-carbon steel (#1045 is an SAE standard)
JT – C49 high-carbon steel (#C49 is not an SAE standard)
Have you seen the SAE classifications of steel, stainless steel, etc. ?
The list below is just a start. It is a whole new world – and it gave me a headache.
Here is a link: http://en.wikipedia.org/wiki/SAE_steel_grades
SAE designation Type
1xxx Carbon steels
2xxx Nickel steels
3xxx Nickel-chromium steels
4xxx Molybdenum steels
5xxx Chromium steels
6xxx Chromium-vanadium steels
7xxx Tungsten steels
8xxx Nickel-chromium-molybdenum steels
9xxx Silicon-manganese steels