Shimano 105 Componentry

Discussion in 'Cycling Equipment' started by GT Fanatic, Aug 6, 2010.

  1. GT Fanatic

    GT Fanatic New Member

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    First off, I'm not a bicycle mechanic, but I feel like over the past month and a half of owning this particular bicycle, I'm starting to learn a lot, and I'm not meaning this from the positive end of the spectrum.

    I bought a 2010 Schwinn Paramount Series 7 on June 21st, and it had nothing but shifting issues with the Shimano 105 componentry. I had it back and forth to numerous shops no fewer than 10 times within that period of time.

    The chain would slip while climbing steeper grades, the gears would slip either or down while climbing those same steep grades, if all of the rear gears worked right when the front chainring was in one gear, they wouldn't work in the other (it didn't matter whether it was the large chainring or the small one), rear gears would skip and hunt, I'd have to tap the shifter twice to get a gear to switch, etc.

    I finally had enough of hearing, "Just fine-tune the barrel adjusters," or "There's a break-in period." I had ridden this bicycle no fewer than 200 miles since purchase. I'd say that's more than enough time for a "break-in period." Not to mention, the additional costs from having to trek this bike from one bicycle shop to the next, some of which were 50 miles away.

    On Tuesday morning I returned to Performance Bike upon their customer service department's request and exchanged the bike for a replacement. I rode the replacement bike around the parking lot, trying out the gears, and they seemed to work okay, but the problem is that there aren't many hills in Fairfax, VA. To simulate a hill, I'd press the rear brake to build drag, and everything worked fine.

    I got home with the bike, went out for a spin, and sure enough, everything went to Hell. Once again, I'm having issues with the bicycle, and they are the SAME, EXACT ISSUES as I was dealing with before! :mad:

    What is up with this Shimano 105 stuff? I keep hearing about how it's the "industry standard," and it's "good ****," but I'm going to beg to differ. Here I am with a $2000 (retail) road bike and I have nothing but problems with it, and this is the SECOND one! My wife has a $380 mountain bike that doesn't have these sorts of issues, and the mountain bike takes a beating! :mad::confused::mad:

    Somebody PLEASE tell me what's up with this Shimano 105 stuff, because I think 105 are piles of absolute ****.

    I've given this bicycle until the end of the month to be sorted, and if not, I'm returning it, period. It's disappointing, because this is the bicycle that I chose and I want, but I'm not going to continue to deal with this bs on a $2000 bicycle.

    Not feeling confident, I'm already looking at my other options, but to my dismay, they too, have Shimano 105 componentry. :mad:
     
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  2. Peter@vecchios

    [email protected] New Member

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    Since most 105 equipped bicycles work just fine I think it's NOT a design flaw with the RD but rather an assembly issue as echoed by those of us that see bicycles, including many shimano equipped bikes, that work flawlessly.

    The common thread is the bike shop. If you wish, go see another bike shop and ride a similarly equipped bike to see if it has the same issues. I'll bet it doesn't.
     
  3. GT Fanatic

    GT Fanatic New Member

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    And I think you're absolutely correct in your assessment.

    I had a very knowledgeable friend of mine from our club look at the bike last night and he said the derailleur didn't have enough strength to pull the cable in both of the chainrings. He also had to tap out the hole where the cable inserted, because apparently it was cross-threaded. After tuning and tuning, these are the conclusions he came up with.

    I had these same exact issues on the last bicycle, so he seems to think it's a bad batch of 105s, or that they were assembled with an incorrect spring.

    I've decided that today I'm going to call Performance Bike, talk to the manager, and "strongly suggest" that the rear derailleur is the problem, it was the problem on the last bike, and to replace it with an Ultegra for my troubles. If he wants to charge me for it, fine, I will pay the difference between a 105 and Ultegra, but I'm not buying it for the full price. If he declines, I will be returning the bicycle for a full refund.

    One way or another, I will be riding a road bike by the end of the day. While I very much want it to be my Schwinn, it doesn't have to be. If we go down that path, I already have my eye on a Cannondale Synapse 5. No, it's not carbon like my Schwinn, but I guess it'll have to do, because I'm not just willing to spend $2000 on a bicycle.

    The bikes I have my eye on are as follows:

    1. Cannondale Synapse 5

    2. Cannondale Caad9-5 or 9-4 (if on sale)- I rode one before and didn't like it at all, but after having ridden a road bike for a while, my opinions may change

    3. Scott Speedster S20
     
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