bjw@mambo.ucolick.org
12-31-1969, 08:00 PM
On May 21, 2:59*am, "Ted Mittelstaedt" <t...@toybox.placo.com> wrote:
> *The wear on the teeth on the 4th gear in the cassette stuck
> out pretty obviously, it's definitely hogged out - those teeth do not
> look like the teeth in the other gears. *The other gears in
> the cassette could be fine, I really didn't look that closely. *My general
> approach when seeing worn gears is to leave the sprockets
> and chain alone until they start slipping then replace everything all
> at once.
This is bad maintenance practice. You should
measure the chain every now and then and replace
it when it gets to 0.5-1% elongation (beyond the
nominal 12" per 12 links).
That way, you can make a cassette last through
about 3 chains, and you won't wear out the chainrings,
which are expensive to replace.
This is no different (and less hassle) than remembering
to change the oil in your car.
> > If your wife has ridden fewer than 10,000 miles on that bike during
> > the past year - which is an easy bet - there's no way she's "hogged
> > out" any teeth.
>
> I think your exaggerating on that. *Mileage and chain wear are not
> closely related. *Chain wear is related to chain lubrication, a dry chain
> with grit in it will wear quite quickly.
If you're wearing out cogs because the chain's
worn and never lubed, it's not "crap Shimano gears,"
it's failing to take care of your equipment. Respect
your bike and it will last longer.
Ben
> *The wear on the teeth on the 4th gear in the cassette stuck
> out pretty obviously, it's definitely hogged out - those teeth do not
> look like the teeth in the other gears. *The other gears in
> the cassette could be fine, I really didn't look that closely. *My general
> approach when seeing worn gears is to leave the sprockets
> and chain alone until they start slipping then replace everything all
> at once.
This is bad maintenance practice. You should
measure the chain every now and then and replace
it when it gets to 0.5-1% elongation (beyond the
nominal 12" per 12 links).
That way, you can make a cassette last through
about 3 chains, and you won't wear out the chainrings,
which are expensive to replace.
This is no different (and less hassle) than remembering
to change the oil in your car.
> > If your wife has ridden fewer than 10,000 miles on that bike during
> > the past year - which is an easy bet - there's no way she's "hogged
> > out" any teeth.
>
> I think your exaggerating on that. *Mileage and chain wear are not
> closely related. *Chain wear is related to chain lubrication, a dry chain
> with grit in it will wear quite quickly.
If you're wearing out cogs because the chain's
worn and never lubed, it's not "crap Shimano gears,"
it's failing to take care of your equipment. Respect
your bike and it will last longer.
Ben