in message <
[email protected]>, Neil Smith
('
[email protected]') wrote:
> I put on cheap Shimano Tiagra front cranks. They wore down much faster
> than I would have expected. If I got more expensive front cranks say
> 105, would they last longer.
Almost certainly not - in fact, quite likely the opposite. More expensive
means lighter weight, and very often more susceptibility to wear. In any
case, chain rings should not wear significantly unless you are using a
worn out chain. The solution is to change your chain /much/ more
frequently (and, if your chainrings are worn, change your cassette as
well).
Once any part of the transmission is worn it will rapidly wear out the
other parts - so it's no point putting a new chain on a worn cassette or
chainrings.
So: in your current circumstance, replace the lot - cassette, chain,
chainrings - with new. That's really expensive, you do not want to do it
often. From here on in, check your chain at least once a month for wear,
and if it's worn out /replace/ /it/ at once. Replacing the chain
is /much/ cheaper than replacing the whole lot!
--
[email protected] (Simon Brooke)
http://www.jasmine.org.uk/~simon/
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