Originally Posted by Tandem Tom
Are they compatible with all brand chains? I am not sure what brand I have. The chain only has 700 miles on it.
They are not brand specific, per se... but you need to know the width of your chain before deciding which one to use. Obviously, 10 speed, 9 speed and 8 speed chains have different widths so you need to make sure you get the right model of a re-useable link.
However, not even all 9 or 10 speed chains are the same width, so in some respects you'd be best to use the one that came with a chain, e.g., SRAM, KMC & Wipperman all come with their own. If you're using a Shimano chain, then you'll want to measure the width and make sure you use a link that's made for a chain of approximately the same width.
I take the guess work out by using Forster SuperLinks: http://www.forstertool.com/chainlink.htm
Lickton's carry's them: http://www.lickbike.com/productpage....B='0338-10
They seem to last the life of several chains, noting I've used them on tandems since the late 90's, well before before Forster Machine acquired the rights from Craig Metalcraft.
Again, the key is getting the right width. If you try to use a link that's too narrow, you'll never get it back off if you somehow find a way to get connected. If you use one that's too wide for a given chain you may end up with an annoying clicking sound coming from your rear derailleur as well as chain jumping.
Note: Last time I checked, Co-Motion uses a different width chain for their drive and sync chains.