Chain Rings Advice

beltabout said:

[font=Arial]I have posted about buying a new bike recently and found the help on the forum most useful so here’s a test for you all!

The bike I ride currently without any problems has 48, 38, 28 chain rings on it’s crank set, which powers a standard 11/28 cassette, which is 11, 13, 15, 18, 21, 24 & 28.

The bikes I am looking at have 44a, 325, 225 chain rings that in turn powers a 11/34 cassette 11, 13, 15, 17, 20, 23, 26, 30, 36.

This means I will not be able to go as fast according to Sheldon Browns site [/font][font=Arial]sheldonbrown.comgearsOpen ↗[/font][font=Arial] at 60 RPM currently I manage 30.7 kph
As apposed to 28.6 kph. I will be able to peddle better in the lower gears and climb steeper hills.
Are there other considerations I should be aware of before I change the chain set to one that I am comfortable with.

As always any help advice is greatly appreciated.

Good riding

Nick[/font]

ok firstly, do you want knee replacements ? pedalling at a cadence of 60 will get you there

what do you use the bike for ? if you actually use your mountain bike for mountain biking then i doubt you would be using your 48-11 gear at all or even the 44-11 much if at all (assuming you learn to pedal first)

if your not using it for mountain biking why have a MOUNTAIN BIKE ?

if you do change it you'll need a new chain (more length, also check the derallieur cage length), and new front derallieur. what sortof gearing does the bike have ?