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Old 07-12-10, 03:54 PM   #1
canonikon
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Which spoke size should I buy for my GMC Denali 700c?

I just recently purchased a GMC Denali from walmart the medium size one.

http://www.walmart.com/ip/700C-GMC-D...-Bike/12080282

The wheels wobbles after i assemble my bike, therefore I need to buy a spoke wrench to true my wheels. Which size should I buy?

thank you all
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Old 07-12-10, 03:59 PM   #2
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Take your bike to a bike shop and ask which size you need, but if it is under warranty they should true it for you at no charge (though it's doubtful it will be a very good job).
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Old 07-12-10, 04:54 PM   #3
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It is most likely going to the the RED or GREEN key from Park Tool. You can just buy a cheap "O" tool with various sizes. There have been a few times when I have worked on those bikes and have had to use two different types of spokes wrenches due to some rouge nipples being a bit smaller or larger.
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Old 07-12-10, 06:33 PM   #4
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Originally Posted by cny-bikeman View Post
Take your bike to a bike shop and ask which size you need, but if it is under warranty they should true it for you at no charge (though it's doubtful it will be a very good job).
The "bike shop" was Walmart so getting good warranty service there is VERY unlikely. A real LBS would have to charge a significant amount to true and tension these wheels as they would require a lot of work and possibly never true up properly.
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Old 07-13-10, 09:52 AM   #5
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A real bike shop would probably work the whole bike over and get it set up properly for $50 or so (though if it's an involved wheel truing as others have said... probably more).

Alternatively, you could just return the whole thing to Walmart and get another one - they take almost anything back.

Given the cheapness of the components on those bikes, I'm wondering if this wheel will ever be true...

could it have been damaged in shipping, perhaps?
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Old 07-13-10, 10:10 AM   #6
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take it to the GMC dealer for a laugh, { laughed with, or at, yet to be determined **
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Old 07-13-10, 10:17 AM   #7
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I'd just go for the Park triple for around $10 :

http://www.pricepoint.com/detail/191...rench-SW-7.htm
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Old 07-14-10, 06:41 AM   #8
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Walmart doesn't true wheels. From what I've seen if you buy a preassembled bike from Walmart you're lucky if the brakes are useable without adjustment.
Sadly most people buying bikes from Walmart know almost nothing about bikes and can't/won't fix anything themselves. It's probably best that any bike from Walmart be disassembled (everything, whether it was assembled at the store or the factory) and reassembled and adjusted bike someone who knows what they're doing.

If there is a problem Walmart will exchange the bike (and typically resell it at a marked down price, with no consideration to whether it's safe), but if the wheel isn't really god awful it's probably not that different from what you'll get if you exchange it. And since the exchange will be the whole bike you never know what other problems you will acquire.

There is a bike store version of the same bike. Not much more expensive and it comes with MicroShift brifters instead of RevoShift.

Last edited by NightShift; 07-14-10 at 06:55 AM. Reason: typo
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Old 07-14-10, 06:59 AM   #9
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http://rover.ebay.com/rover/1/711-67...d=400103676128

Not a bike store, and probably a larger size, but it was the first example I could find.
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Old 07-14-10, 07:19 AM   #10
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The wheels were probably "trued" by whomever built them at the factory in China... whose job it is to get a wheel that will stand up turned out as fast as possible.
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Old 07-14-10, 07:22 AM   #11
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Since you asked about which spoke wrench to buy, it sounds like you want to true the wheel yourself. Consider yourself one of a select few who would rather learn how to fix something themselves than run to a "pro" to do it for them. A good place to start learning about how to true wheels is www.sheldonbrown.com There are many other online sources as well and lots of conflicting advice on the details but the basic procedure is the same.

Your best bet for finding the right size spoke key is either buying a key with multiple sizes or taking the wheel to a bike shop and trying different sized keys. I'm betting on the Park Tool RED key.
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Old 07-14-10, 07:29 AM   #12
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WalMart/KMart/Target/Sears/etc bought bikes are money makers for LBS'. Having been a mechanic in an LBS, those bikes are/were a blessing and a curse. Guaranteed money for the service they desperately need, but because of the quality, the labor was usually a *****.
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