Hybrid Bicycles - looking to upgrade my drivetrain

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lbautista23
06-18-12, 06:49 PM
i have a 2012 giant roam 1. if i wanted to upgrade my drivetrain, what would my choices be?

this is what i currently have according to the giant webpage


DRIVETRAIN
Shifters Shimano Acera
Front Derailleur Shimano Acera
Rear Derailleur Shimano Acera
Brakes Avid BB5 Disc
Brake Levers Tektro 4-Finger
Cassette SRAM PG 950 11x34, 9-Speed
Chain KMC HG53
Crankset Shimano M391, 26/36/48
Bottom Bracket Shimano Sealed Cartridge

bjjoondo
06-18-12, 07:06 PM
I guess if your looking for super performance over the Acera group, anything from Deore on up the Shimano scale for "MTB" derailleurs would be a good choice. I had a SRAM X9 group on a recumbent I use to own and WOW, those shifted like BUTTER. If you want to go more "road" group, you'd have to "lose" the 11/34 cassette and from what I've looked at 28 tooth is the normal MAX cog, except on the 10 speed groups that go up to a 30 tooth. So far I really like my Shimano ACERA group on my Coda Sport, since I'm not into ultra-performance riding, I'll probably not spend the bucks to upgrade, LOL, well at least not till it "wears out",! ;) BTW, I've heard that Avid BB7's are the "cat's meow" of cable disc brake systems, ymmv.