Convert 3 x 9 to 2 x 9 or 10 drivetrain

Avigazed

Can anyone tell me the rough cost of converting a 3 x 9 drive train to a 2 x 9 or 10?
I would like to use SRAM X9 or the Shimano equivalent parts.
External BB.
Also, whats the going rate for a second hand 3 x 9 drive train?
including cassette, chain, chainrings, derailleur (is this necessary) or which items need replacing.

Thanks
Steve

supersonic

Cost is nothing - remove the ring you don't want, and adjust the front mech!

warpcow

If 2x9, then the minimum you need is chainrings in suitable sizes (but that could be the ones you already have), plus either a bash or short bolts, so about £5 and up. You might also need a new chain and cassette if yours are too worn. Going 2x10 is a different story. You need shifters, rear mech, chain, cassette at minimum.

Grab a calculator and click here: http://www.chainreactioncycles.com/

cooldad

What SS said.

Johnny Napalm

Cost is nothing - remove the ring you don't want, and adjust the front mech!

Yep, 'tis all that I did
.

The Rookie

Some bikes come with single compatable bolts, not many, so most as Warpcow said will need either a bash or single specific bolts (or if you get a thick plastic bash, suitable bolts for that!)

Avigazed

Hey guys,
Thanks for the advice.
Clearly.... you care.

Cheers
ps; I'm looking for opinions on bikes. Which forum is best for this subject?

supersonic

Best in buying advice.