Quoted message said:I had my LBS tune my Trek 2300 /Ultegra triple and I'm not
a happy camper.When I originally took it in, I mentioned
the front der wouldn't
trim
Quoted message said:properly but otherwise everything was fine. (I told them
the large ring/small cog combo chain hit the outer part of
the cage.)
Could be a definition problem. There is no "trim" function
in the large chainring on an Ultegra triple; it only has one
position. The middle and inside (small) chainrings are the
only ones in which you can "trim" the front derailleur.
Quoted message said:Of course, when I picked it up it was raining like a bear
so I didn't get
a
Quoted message said:chance to ride it and check it out.. The next day I
noticed it still had
the
Quoted message said:same problem and front der had the little bit of slight
film on the der pivot points, exactly like when I took it
on. I wasn't convinced they did anything.
Pivot points on a derailleur don't usually need much (if
any) lube during a normal tune-up. If anything they might
need to be wiped down. Current-style front derailleurs
rarely, if ever, display wear or have much friction on their
pivots. OK, the short story- I don't think the lack of lube
evidence on the front derailleur is an indication of the
overall quality of the tune-up.
Quoted message said:I took it back to the shop and wanked about it. They
mentioned the first tech had to leave and passed it to
someone else to finish and something
must
Quoted message said:have gotten overlooked. So, the chief tech threw it in a
stand, putzed around for a few minutes and pronounced it
ready. I took it for a quick
spin
Quoted message said:and pronounced it NOT ready. Basically, for each front
ring I had about
3-4
Quoted message said:rear cogs that were usable without chain noise from
hitting either the inner/outer part of the cage.
For the inside & middle chainrings, 3-4 gear changes before
needing to trim the front derailleur would be about right.
But if you're saying that you're unable to get rid of
chain/derailleur scraping in the middle & small chainrings
even after trimming... then it's not set up properly.
Quoted message said:When new, I don't remember any chain noise that couldn't
be trimmed out, even with severe cross chain combos. (I
didn't cross chain but COULD have without chain noise.)
Chain noise is almost always going to be quieter on a new
bike, due to the heavy lube that comes on the chain.
Quoted message said:Am I expecting too much from the LBS? Is tuning an Ultegra
triple that difficult? Anyone recommend a quality shop in
the northern Detroit burbs?
The Ultegra triple with STI requires a bit more than just a
by-the-book technique for adjustment. It takes a while to
get the hang of how everything interacts, and to get away
from the idea that cable tension isn't something to pay
much attention to (when it's in the small front chainring).
But it's not rocket science either, and a mechanic who has
set up a number of them should have a pretty good feel for
how it works.
It *is*quite different from the double version, because
there's no trim adjustment for the largest chainring (which
the double does have).
But I still don't have enough information to evaluate what's
really going on here, since you implied that the derailleur
doesn't trim properly in the largest chainring... and in
reality, it doesn't trim at all in that position. And I'm
also not sure what you're saying about its ability to not
make noise in more than 3-4 rear cog changes (specifically,
whether that's the case with or without using trim). - --Mike--
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