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Need advice please

Old 06-28-08, 09:09 AM
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Need advice please

I just bought a Trek 7000 Hybrid, and actually took the one they had on the floor of the store. I've only ridden it twice within about 6 days now, for less than 5 miles, and there are a couple of gears that have a constant clicking sound, and there's also an alternating rub sound coming from the front wheel/brake area. I took it in once to have it adjusted, but it didn't remove the sounds. I don't need to know how to try to fix the things (yet anyway). But being a new bike rider I'm wondering if this is normal on a new bike? Shouldn't a new bike be smooth and quiet? I think I'm going to take it back and ask them to order me a new one for a replacement, but I just wanted to make sure I'm not over-reacting. Thanks for the advice!
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Old 06-28-08, 09:16 AM
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You may be "cross chaining" which is why it's only on a few gears which has more to do with your gear selecting than a mechanical problem...
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Old 06-28-08, 09:47 AM
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Did the shop give you any instruction on how to shift?

Do they offer a break-in adjustment?

Any worthwhile shop will help you with your questions and issues. Take full advantage.
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Old 06-28-08, 10:30 AM
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OK, so I guess I didn't realize that there was more of a skill to shifting than just shifting to easier gears when pedaling got harder...But the same two gears every time for the entire length that I'm in them? The guy at the shop said that he thought by looking that something was rubbing together where the teeth are (forgive me, I don't know terminology yet). But you guys are the experts, so if that's the concensus then I'll ask them to give me a crash course on shifting. (Though maybe I'll try the "new bike from the factory in exchange for the test driven floor one" first Thanks guys!
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Old 06-28-08, 12:22 PM
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Most new bikes from shops are rarely perfect and over time (usage) it gets worse and needs readjustment. If you are up for it, it would be a great idea to get a crash course in gear usage and basic adjustments (all you really need is a screw driver) because it'll prolong your bike parts' life and probably make biking more fun and less noisy.
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Old 06-28-08, 05:34 PM
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Cross chaining is when you are using the largest chain ring (front sprocket) with the largest cog (rear sprockets). OR, small-small combinations.
IF you look from the rear of the bike, you'll see the chain runs at a steep angle (sideways). You don't want to do that, because it accelerates wear and makes noise.
I think the 7000 is a 7 speed on the rear?
Use only the-
5 largest cogs with the small ring
5 middle cogs with the middle ring
5 smallest cogs with the big ring.

Unless you're doing some seriously steep hills, you should never need the 34T cog on the back.
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Old 06-28-08, 05:49 PM
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Here's a visual for ya...

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Old 06-28-08, 06:14 PM
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Awesome--Thanks again! So much to learn!
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Old 06-28-08, 06:27 PM
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THIS is where I lifted the chain line pic from. You can find plenty of repair info on the Park tool web site.
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