Are Cranksets "backwards compatible"?

[TheDL]

Hey folks,

I'm going to be aquiring an older bike that has a Shimano 7 cog cassette, I want to move up to a tripple crankset and I see the new ones will say "Shimano 9 speed compatible" Will it also work with my currnet cassette?

or am I just getting the lingo all wrong?

p.s. I know I'll have to get a new derailuer too for the tripple chain ring.

 

[boudreaux]

Originally posted by TheDL
Hey folks,

I'm going to be aquiring an older bike that has a Shimano 7 cog cassette, I want to move up to a tripple crankset and I see the new ones will say "Shimano 9 speed compatible" Will it also work with my currnet cassette?

or am I just getting the lingo all wrong?

p.s. I know I'll have to get a new derailuer too for the tripple chain ring.

You'll also need a correct BB for the triple crank.It'll work. just use a sram 8 speed chain.

 

[TheDL]

Originally posted by boudreaux
You'll also need a correct BB for the triple crank.It'll work. just use a sram 8 speed chain.

Right...I knew that too....really...I did.

Thanks