Re: Shimano 105
Originally Posted by alfeng
Ya wanna know what's really funny...It's when there are numerous people posting in a thread and only ONE of those people get a different impression than everyone else, THEN argue about how EVERYONE ELSE is wrong EXCEPT FOR himself. The odds are that when EVERYONE disagrees with you, YOU are the one who is wrong.On the contrary, YOU should hold on to YOUR perception of communication skills, or better yet, DON'T.
Okay, here's my "different impression"
I've said it before, but there are so many people in denial that you may choose to ignore it, too ...
The problem probably stems from the "dwell" which Shimano engineers designed in their STI shifters which is not a factor for Flatlanders OR for people who are willing to unweight the drivetrain when downshifting ...
The balky downshifting apparently has been exacerbated by the floating upper pulley which some Shimano's engineer introduced with their 10-speed rear derailleurs ... but, the effects of the floating upper pulley can be mitigated with the most recent asymmetrical chain which Shimano introduced with the 7900 DA group.
IMO, you have a couple of options:
The first may not be beneficial -- swap the lower pulley which doesn't float with the one that does. If it is better, then either leave it as is, or put the floating pulley back in the upper position BUT with a washer to prevent it from floating.
The second option will work -- it involves replacing the Shimano shifters with 10-speed Campagnolo (non-QS!
) shifters ... by my reckoning, you will have to either hubbub.com
the rear derailleur cable anchoring to achieve 10-speed Shimano indexing OR buy a SRAM Road rear derailleur OR change the 10-speed cassette to a 9-speed cassette.
If you change to a 9-speed cassette, you will want to change the front derailleur to a 9-speed Shimano front derailleur.
You should be able to sell the 10-speed Shimano shifters for about the amount which the 10-speed Campagnolo shifters will cost. You do not
want either the Campagnolo Xenon-based QS shifters or the yet to be released Campagnolo Power Tech shifters.
If you are committed to keeping the Shimano shifters AND/OR swapping the pulley wheels doesn't have a beneficial effect, then you should consider ponying up for one of the new, asymmetrical Shimano chains.
Okay, what is your point? I never argued with anyone. Clearly there is an issue with the bicycle and NOT the Shimano componentry. I'm pretty sure that has been established.
Originally Posted by davereo
If you do bail out on them and get your money back. I own both the Caad9 and Synapse you mentioned and your evaluation of the caad 9 is spot on. The Synapse is a lot more comfortable to ride and performs well. Hopefully you get all your problems resolved without having to resort to this.
Originally Posted by davereo
This may be good advice for someone to entertain if they have just purchased a used bike. Dude GT is struggling with a brand new purchase that is still under warranty.
Okay, indeed there WAS a problem with the bicycle, from the factory
(I brought it to Performance today).
The derailleur cables are routed through the body, and whoever installed them from the factory crossed them, which was causing one of them to pull on the other, which was stopping the derailleur from working correctly.
They had agreed to upgrade me to an Ultegra rear derailleur for the difference in price between it and a 105. They installed the Ultegra and still had the same problem. This issue was discovered when the tech was pulling on the derailleur cable and the other one was moving.
I was frustrated, but the guys really tried to help me out, and I left the bicycle with them so they could re-route the cables and everything. They called later this afternoon and told me that 3 people had ridden it and the error seemed to be fixed.
While I was there, I did find my "replacement." There was a GT Series 1 with all Ultegra, plus carbon seat-stays and fork. It also had those nice wheels with the "flat-bladed" spokes. It was a very nice bike. They also had a GT Carbon right next to it (in the same size) and I had to compare the weights for myself. Honestly, the aluminum/carbon did not feel any heavier than the full-carbon one did.
The full-carbon model had 105 and cheaper wheels.
If things don't work out, I'm going to be coming home with the GT Series 1 with the Ultegra group. I'll probably have to fork out another $100-$200, but that's okay. Regardless, I'm still hoping everything goes well with my Schwinn, because that's the bike I really want.