[NRSracer]

i need a new crankarm for the side with the drivetrain, can i leave everything but the crankarm on there and just get a new crankarm, or do i haave to buy a whole new crank? btw, is there anywhere i get a new arm or crank for less than $50?

 

[BikeGeek]

I've only seen them sold as pairs.

Check around on the 'net, I've seen LX cranksets for less than $50.

 

[NRSracer]

ok, got the crankarm problem fixed, but now i cant shift in the front. i extended the deraillleur as far as it would go and it wouldn't shift onto the third sprocket, do i need a new derailleur or is it just an adjustmnt, i tried moving the derailleur, tightening the cable, loosening the cable, and moved the two screws to every position, but no luck

 

[BikeGeek]

If you replaced the crank with a different brand, you may need a different BB spindle size.

 

[NRSracer]

all shimano, but the new chainrings are smaller

 

[KrusteeButt]

Yeah, that's exactly what I discovered a couple days ago.
You can get the info from the manufacturer of the crankset that indicates the range of spindle size that they recommend. If you have a longer spindle than recommended for that crankset, there's no way the derailleur's gonna be able to go out that far.
Fortunately, BBs aren't that expensive at all and a good shop should be able to replace that and get it all working smoothly for you in about a half hour.

 

[NRSracer]

got a new bb, but haven't put it on yet

 

[NRSracer]

couldn't get it in, but i think im gettin a new frame soon anyway

 

[KrusteeButt]

Originally posted by pat873401
couldn't get it in, but i think im gettin a new frame soon anyway

Couldn't get the BB in? Or couldn't get the crank on?
Just curious what you're doing.

Why do you need a new frame? do you need a new frame?

 

[NRSracer]

wanted a new frame, for weight and disc brakes and the new shock, and it was the bb i couldn't get in.