I've been ruler measuring for years, I just start my measurement at 1 not zero and pinch the ruler to the chain with my fingers. I typically measure above the chain stays and only 9" as that's how short chainstays allow. Its a good ball park figure
but some chains that aren't elongated at all still skip on worn cassettes due to roller movement. No method takes into account the chain Internal width growing which can be seen when arcing the chain on a table. A few derailleur setups with big B screw gaps (poor chain wrap) have given me awful shifting and loud cassette clangs which only happened with chains that have excessive internal width
Fully on your side! Even a simple chain checker does the job pretty well. Other methods may have some benefits, but they are also much more complicated.
If you just put some masking tape halfway though first pin, creating a vertical line at 90 degrees across the chain, you could line zero point up correctly and just tape ruler end in position, then check elongation at other end. The masking tape will remove easily and leave no residue.
I've been ruler measuring for years, I just start my measurement at 1 not zero and pinch the ruler to the chain with my fingers. I typically measure above the chain stays and only 9" as that's how short chainstays allow.
Its a good ball park figure
but some chains that aren't elongated at all still skip on worn cassettes due to roller movement. No method takes into account the chain Internal width growing which can be seen when arcing the chain on a table. A few derailleur setups with big B screw gaps (poor chain wrap) have given me awful shifting and loud cassette clangs which only happened with chains that have excessive internal width
It may be preferable to take a measurement below the chain stay because the derailleur spring keeps the chain tentioned there.
This is why I just bought the CC-4 Chain Checker. No thinking required. ;)
Fully on your side! Even a simple chain checker does the job pretty well. Other methods may have some benefits, but they are also much more complicated.
If you just put some masking tape halfway though first pin, creating a vertical line at 90 degrees across the chain, you could line zero point up correctly and just tape ruler end in position, then check elongation at other end. The masking tape will remove easily and leave no residue.
Indeed! Sounds like an easy way to make this method more reliable 👍
We can use ruler method, just divide de result by 0,64 to take in account approximate the rollers wear, 👍🏽
Bem ,,, o gajo é ta0 simpático que lhe dou polegar p`ra cima .