Changing Crankset

nolongerfat

I need to change my crankset because the threads that hold the pedal in on one side are stripped, and I have 2 questions:

1: would you change just the arm (left side) or the whole crankset?

2: if I do change the crankset, does it matter if the new one I buy has the same amount of teeth, or is a different amount of teeth able to fit on the bike and ride fluidly?

thanks.

if it helps: i have this bike:

http://www.specialized.com/us/en/bikes/archive/2006/crossroads/crossroadsxccomp#specs

and i'm considering either:

http://smile.amazon.com/gp/product/B005YO0ICM/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=AMY4I718ZUBOU

or

http://smile.amazon.com/gp/product/B002P72TMI/ref=ox_sc_sfl_title_3?ie=UTF8&psc=1&smid=A16QDZ1XG7GVFM

thanks

Grill

1. If it's a good chainset then I'd just change the arm.
2. No. You can adjust the chain and front mech accordingly.

zx6man

I got a suntour XCT cranket for about £20 .... would do the trick

http://www.ebay.co.uk/itm/like/351044050036?limghlpsr=true&hlpv=2&ops=true&viphx=1&hlpht=true&lpid=108&chn=ps&device=c&rlsatarget=&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0-L&ff12=67&ff13=80&ff14=108&ff19=0