Unsafe to ride my bike?
06-22-06, 02:10 AM
#1
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Unsafe to ride my bike?
Hi everyone, I have a Trek 2100 triple. When I was washing the bike tonight I noticed that the front derailler(clamp on), when shifted into the granny ring, actually hits the frame. This unfortunatly has created a small indention on the seat tube. The dent is probably 1/2 inch in diameter. Because the 2100 is an aluminum frame, is it unsafe to ride? I've heard horror stories about aluminum frames suddenly failing because of slight dents or cracks. Should I contact Trek or my LBS about this and see if I can get a replacement frame?
Thanks for the help
Thanks for the help
06-22-06, 02:48 AM
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take the bike to the LBS and let them see the dent and ask if your frame is dangerous to ride. You can also post here some pictures so we can help you.
06-22-06, 07:53 AM
#3
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I agree with talking to your dealer.
Honestly, I can't imagine a derailleur having enough power to dent a frame tube. My guess is that the "dent" was designed into the frame to provide clearance to allow the derailleur to move far enough inward to access the granny ring.
Honestly, I can't imagine a derailleur having enough power to dent a frame tube. My guess is that the "dent" was designed into the frame to provide clearance to allow the derailleur to move far enough inward to access the granny ring.
06-22-06, 08:16 AM
#4
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Originally Posted by Retro Grouch
I agree with talking to your dealer.
Honestly, I can't imagine a derailleur having enough power to dent a frame tube. My guess is that the "dent" was designed into the frame to provide clearance to allow the derailleur to move far enough inward to access the granny ring.
Honestly, I can't imagine a derailleur having enough power to dent a frame tube. My guess is that the "dent" was designed into the frame to provide clearance to allow the derailleur to move far enough inward to access the granny ring.
I would just stop by any Trek dealer and look at a similar bike to verify this is the case with your particular frame
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06-22-06, 10:36 AM
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God made it that way
Or at least Trek did. That "dent" was there the day the frame was made, before it ever saw your derailleur. It is put there to make room for the front derailleur to reach the small chainring. If your derailleur is hitting that spot then it might be a bit out of adjustment.
If you want to go back to your LBS, just stroll over to the rack and admire a nice shiny new Trek 2100. You'll see the same dent as you have.
If you want to go back to your LBS, just stroll over to the rack and admire a nice shiny new Trek 2100. You'll see the same dent as you have.
06-22-06, 11:22 AM
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thanks guys. I have to go to the LBS to pick up new tires for my other bike, so I'll just ask a tech there and take a look at a new 2100 to verify that it is a design feature.
06-22-06, 05:27 PM
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The reason I answered so confidently is because I recently bought a brand-new 2005 Trek 2100 on eBay, and when I unboxed it and looked it over, I saw the same spot and said "Holy &@#^#%, he dented the seat tube!"
06-22-06, 06:30 PM
#8
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I have a steel Univega (2000 model) road bike with a "dented" relief area in the chainstay to make room for the chainrings. I think little relief areas are common on bikes, especially ones with oversized or odd shaped tubing.
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Cat 2 Track, Cat 3 Road.
"If you’re new enough [to racing] that you would ask such question, then i would hazard a guess that if you just made up a workout that sounded hard to do, and did it, you’d probably get faster." --the tiniest sprinter
06-22-06, 06:51 PM
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haven't i seen this thread before?
