Quote Originally Posted by TsPoet
What is involved in switching from a double crank to a triple or a compact? Would I need a new derailure, or bottom bracket, or...?

I'm still looking for my perfect road bike. Missed an opportunity to buy an Orbea Lobular from my LBS for a steal. I note there is one on ebay - it has a double chainring (53-39 ) neither a compact nor a triple - I'm sure I'd need either a compact or a triple. It's a 10 speed Ultegra groupo.

thanks,
I ride an Orbea mitis (it's brilliant, by the way). I got it with Ultegra 10spd (53-39 in front, 12-23 in back), and I replaced the front with a 50-36 Bonty carbon compact and a 12-27 cassette behind. All I needed to change was the BB (which came with the crankset) and the chain (same kind of chain, but a new casstte so a new chain). The front and rear mechs are still normal Ultegra doubles, but get a trusted expert to make the adjustments. Now I can climb anything the Scottish Highlands throws at me, and I've used the bike for road racing as well and haven't been caught short with the 50-12 in sprints or descents either. A great way to go. Good luck!