O
Owen Pope
Guest
I've been appointed Head Mechanic in charge of my
girlfriend's
Cannondale, and it has one glitch that I can't quite figure
out.
This is posing a nasty challenge to my facade of
mechanical omniscience.
The problem is one of shifting. If while downshifting
from big- to little chainring, the chain is on one of the 4
smaller cogs of hte cassette, the chain will hang between the
two chainrings. It will shift, but the chain slides freely,
allowing the pedals to spin for a moment before it engages the
smaller chainring.
I've tried adjusting the tension, fiddling with the
limits, and replacing the chain. Nothing seems to work,
though I'll admit that my wrenching skills are rusty, and I
may need to repeat some of of my efforts.
Does anybody have any suggestions?
The components are shimano 600, 8-speed. Several years
old and well-used, but very functional.
Also, when holding the bike off the ground, and swinging the
front wheel, there is a ...notch... when the handlebars are
straight ahead. This notch seems to affect the steering a
bit, by requiring a noticeable effort (not hard, but just
enough to remind one that it is there) to move the bars.
It's a quill stem, for what that's worth.
This sounds a bit like "indexed steering", but i'm not really
sure since i've never seen it before.
Her father told her that this is a "feature", but I
(obviously) disagree. I decided that before I outright
declared him full of it, I'd consult the wisdom of the group.
Thanks a bunch!
girlfriend's
Cannondale, and it has one glitch that I can't quite figure
out.
This is posing a nasty challenge to my facade of
mechanical omniscience.
The problem is one of shifting. If while downshifting
from big- to little chainring, the chain is on one of the 4
smaller cogs of hte cassette, the chain will hang between the
two chainrings. It will shift, but the chain slides freely,
allowing the pedals to spin for a moment before it engages the
smaller chainring.
I've tried adjusting the tension, fiddling with the
limits, and replacing the chain. Nothing seems to work,
though I'll admit that my wrenching skills are rusty, and I
may need to repeat some of of my efforts.
Does anybody have any suggestions?
The components are shimano 600, 8-speed. Several years
old and well-used, but very functional.
Also, when holding the bike off the ground, and swinging the
front wheel, there is a ...notch... when the handlebars are
straight ahead. This notch seems to affect the steering a
bit, by requiring a noticeable effort (not hard, but just
enough to remind one that it is there) to move the bars.
It's a quill stem, for what that's worth.
This sounds a bit like "indexed steering", but i'm not really
sure since i've never seen it before.
Her father told her that this is a "feature", but I
(obviously) disagree. I decided that before I outright
declared him full of it, I'd consult the wisdom of the group.
Thanks a bunch!