Chainrings

sicknewt

Hi,

Got a TruVativ ISOFlow 22/32/44 on my MTB. Usingthe bike for commuting a lot at the moment so it needs to be a bit faster on the road.

I want to buy a bigger middle and top chainring and have a few questions about what is best to do.

1. Can I simply replace the middle and top chainring on the current chainset?

2. If so, what sizes would people suggest? I guess 34 or 36 for the middle and 46 for the top.

3. Presumably I need to move the front derailleur up the downtube a bit if I put a bigger top chainring on? I've got a Deore derailleur on the front.

4. Or! Would it just be cheaper to buy a new front chainset?

Thanks for any help.

Nick.

nicklouse

what is the rear cassette.

as that is another option to what you sugest or could be done in conjuntion with a chain ring change as 44T is a normal up size. just need to check that the mech can take a 46.

you may also have to consider a bigger granny ring as well.

nicklouse

ok if it is a current one FD-M531 or FD-M530 versions then it is good for a 48T big ring.

but it has a range of 22T so if a granny ring is to be kept it will need as change. dont forget the longer chain

sicknewt

The casette is a SRAM PG950 11-34.

nicklouse

nothing doing at the cassette then. i was hoping it might not have been an 11T at the end.

sicknewt

Hmm, if I have to change all 3 rings I guess it might be cheaper to replace the whole thing? Any suggestions for what with?

Forgot I would have to change the chain as well...