Upgrades to Marin East Peak year 2000

Presky

I've an a East Peak old school full suss. Had it since 2000 and quite keen on keeping it as I like the ride and geometry etc.

Over the years I've added some nice component to make this a reasonably decent bike....Rock Shox SID Race Carbon forks, XT group set, ceramic rims with DT Swiss hubs etc. It's ended up lighter than many modern bikes and to replace it with something new, but as good, will cost me a fair few thousand I'm thinking......

What I want to do now is add disk brakes. I've got the special frame adapter for the rear and the forks are IS mount. I now need to replace the wheels with disk mount wheels and I'm thinking of a general replacement of the group set to an XT 2x11 set up. The thing that concerns me is the frame compatibility with the 2x11 set up. I currently run a 3x9 setup and there isn't that much clearance between the chain and the frame on the swing arm. Has anyone got any experience of doing this or something similar? And good advice to share before I take this any further? All comments appreciated.

The Rookie

On an 11 speed the gears pretty much (not quite) just move closer, so while there is a tiny difference, the lowest and tallest rear sprocket are in pretty much the same place (with tolerances) as on your current bike.

Presky

Thanks and sounds promising. Would a change from 3x9 to 2x11 have much of an impact on gearing range? I like my granny cog so keen to keep the low gear for the steep uphills.

kickaxe

Presky wrote:

Thanks and sounds promising. Would a change from 3x9 to 2x11 have much of an impact on gearing range? I like my granny cog so keen to keep the low gear for the steep uphills.

Depends on what size gears you get! you can calculate it though:

Take the desired front ring (f) by the desired cog (c): f/c=Gear ratio