I have a 2006 Jamis Coda Sport that I'm considering upgrading components on. I'd like opinions on my upgrade plans. I'm debating converting many of the drivetrain components to Deore XT.
Upgrades already complete:
Brooks B-17 saddle
Nashbar trekking bar with cushy bar tape and Ergon grips
Schwalbe Marathon Plus tires
Kool-stop salmon brake pads
Original front derailleur: Shimano R443-A bottom pull
This is the most problematic upgrade as I'm not sure how to replace this. I have a road triple (Truvativ Touro) with flat-bar Shimano ST-R440 (road?) shifters. Any suggestions on whether a Shimano Deore XT FD-M770 front derailleur would work or should this be a 105 replacement and if so which model?
Original brake levers: Tektro alloy V-brake levers
The Tektro levers wiggle around a little and don't quite feel comfortable in my hands. I'm planning on replacing them with Shimano BL-M770 Deore XT brake levers (~$90)
Original brake calipers: Tektro SCD3
These "self-centering" calipers aren't quite self-centering and generally a pain in the rear. The clearance is incredibly tight and I have to completely deflate my tires to allow them to pass between the calipers in the open position. I'm planning replacing these with Shimano BR-M770 Deore XT V-Brake calipers front & rear (~$50 each). Brake pads will stay with Kool-stop salmon.
Original crankset: TruVativ Touro Road Triple 52/42/30
Original bottom bracket: TruVativ PowerSpline 68x113mm, sealed cartridge
According to this prior posting by Sheldon Brown the Touro is a 74mm BCD and per the Jamis website this model has 170mm crankarms.
I'm going to leave the crankset and bottom bracket alone as I don't see a significant benefit to replacing the entire thing unless someone can tell me what benefits there would be. I am planning on replacing the 30t granny ring with a 26t ring for better hill climbing with a fully loaded rig (~$20).
Original rear derailleur: Shimano Deore
I have no issues with how the rear shifts so I'm going to leave well enough alone. Upgrading to a Shimano Deore XT M770 or M772 would cost ~$120 and I'm not sure the math works just yet although it would complete the groupo if I decide to replace everything else.
Original shifters: Shimano ST-R440 for flat bar, 27 speed
Again, I'm not sure these warrant replacement although a set of Shimano SL-M770 Deore XT Rapidfire Shifters for $120 would fit I think.
Original wheelset: Alex ACE18 alloy double-wall eyeletted rims, 32 spoke, Shimano Road 2200 hubs, 14gauge stainless steel spokes
So far I've had no wheel issues (knock on wood) so I wasn't planning on doing anything with these presently. Including a reasonable heavy load on both rear panniers I don't think I would top the scale at 200 pounds for myself and all gear.