Originally Posted by
photogravity
Wippermann 700, 708, 7Z1 or 7R8. I use Wippermann chain exclusively for all my bikes. It's not as cheap as some other brands, but it doesn't stretch nearly as fast.
I haven't used any of the Wippermann chains, but I always have at least a couple of Wipperman Connex master links for 8, 9, and 10-speed chains in my parts inventory. IMO, there isn't a better master link made anywhere, by anybody. KMC master links come close, but the Wippermann link is just a bit easier to use.
Originally Posted by
photogravity
I won't use SRAM chains either. I was on a ride along with a friend who nearly did a face plant when his SRAM 10-speed chain (the ultra-narrow stuff) broke. After that, when I did a 63 mile ride recently on my
Bilenky 650B tandem, I broke a SRAM 9-speed chain
twice over that distance. The tandem is new, so I had not yet changed the chain. I'm replacing it with a Wippermann 908 chain.
I built frames for Santana Tandems in the late '80s and early '90s, and IMHO all tandems should be using KMC chains (or Wippermann based on their rep) if at all possible. I currently am upgrading a 1988 Arriva, and it already has KMC Z8 chains for both the drive chain and the timing chain. I would have been willing to use an Ultegra or Dura-Ace if that is all that was available, but I'm just not willing to gamble on a SRAM anymore.