CowPunk wrote:
> [email protected] wrote:
> >Modern chains do not stretch. The hardened chain pin wears into the
> >bushing, or in the case of bushingless chains the pin wears into the
> >side plate.
>
> I have 2 chains in front of me right now, one new and one old, same
> number of links and yet mysteriously the old one is longer than the new
> one. What's your explanation?
Pin to pin wear, as I explained it above.
>
> >As the chain elongates it wears higher onto the thinner portions of the
> >working face of the gear tooth.
>
> But you just said the chain doesn't stretch? which is it?
The chain elogates due to pin to pin wear. The metal is not stretching,
it is elongating because material is wearing away.
> >The cogs on the cassette turn more revolutions and wear far quicker
> >than the chainrings.
>
> You're missing the point.
>
> >You need to replace your chain more often. You should be able to go
> >through 2 or 3 cassettes, and many more chains before you need to
> >relace the chainrings.
>
> I'm sure the chain manufacturers love you dearly. In my case I have 6
> bikes.
> 6 x 3 = 18 chains/year 18 x $30 = $540/year just on chains....
> Anyway, you're still missing the point.
And the rest of your drivetrain components are cheaper than a thirty
dollar chain?
> >On the team that I currently work for, as well
> >as the teams that I have worked for in the last couple of decades, I
> >have never found it neccessary to relace the whole drivetrain when just
> >changing out the chain and cassette. Most of the chainrings that we
> >replace during the season are replaced because they are damaged from
> >contact with a root, a rock, another rider ...
>
> I'm guessing your talking about LBS teams?
Nope.
AVCT/Bridgestone ... Avocet/Kiwi ... MOA
> Thank God you're not working on my bikes.
Absolutely!
>
> > To have Cowpunk spit out unsubstantiated blather that one should
> > replace their cassette and chain when replacing their chainrings ....
> > without knowing what the conditiion of the drivetrain is (insert
> > childish remark here).
>
> There's nothing unsubstantiated about my remark. It comes from 30
> years of riding and racing both bicycles and motorcycles.
So everytime someone replaces their chainrings, for what ever reason,
they should also replace the rest of their drive train? Holly Sh!t
talk about being in the industry's pocket.
lets see If I can recall what retail looks like... XTR Cassette
~$160.00 and X9sl chain ~49.00
So everytime a rider dinks a ~$99.00 chainring you'd have us throw in
an extra $209.00 in parts .... good way to **** through the budget.
Replace parts as you feel is neccessary but to say that someone should
replace their chain and cassette just because they are changing out
their chainrings is just pure B.S.
> > There is no hard fast rule on drivetrain component replacement (other
> > than perhaps the 1 percent chain wear limit) it is really up to you
> > and perhaps your mechanic to decide.
>
> ROFL... "your mechanic". It's a chain/cogc/chainring for crying out
> loud.
Lots of people have mechanics work on there bikes.
> It's not like adjusting the valves on a Ferrari ....
I would suppose not.
> > This year I had one rider who insisted that the X9SL chains the team
> > was running were wearing the chainrings on his machine. His
> > expalination, the cutout side plates were removing aluminum like a
> > cheese grater. So even with new chain and cassette every couple of
> > races ... he wanted new chainrings as well. For his piece of mind I
> > switched his bike over to a non SL version. No reason to do it ... just
> > piece of mind. Suddenly his chainring wear appearently stopped ....
> > there is just no explaining the thought process.
> >
>
> Or, it could bethat he was right and you are just too arrogant to admit
> your mistake?
LOL so chains now engage the working face of the tooth at the side
plate? You're a very funny guy.
The only time the side plate and the chainring come in contact is
during shifting and in extreme cross chaining, and even then it is the
bottom edge of the side plate that is contacting the ring ... not the
cut-outs in the center of the side plate.
> If you were my team mechanic
You have a team mechanic? That explains the depth of your knowledge.
> and pulled some **** like that you'de be
> looking for a new job pretty fast.
**** like what?
Keeping an athlete happy, by replacing perfectly servicable parts, ....
oh the horror.
If it upsets you so much maybe you could call the USCF and get my
license pulled.
R
