Bottom Bracket Noise?
#1
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Bottom Bracket Noise?
I have a Trek Marlin 7 that makes a scraping type noise under power, doesn't seem loose? bike only has about 50 easy miles on it. any ideas?
Thanks
Thanks
#2
Clark W. Griswold
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What have you done to resolve this? How do you know it is the bottom bracket? A scraping noise sounds like it could be a rotor that is out of true or poorly adjusted. Generally in the first 30 days or so you want to bring it back to the shop you got it from and they should provide a check-up on it just to adjust everything and make sure everything is as good as it can be.
Also keep in mind the bike is a very low initial cost bike so you may want to bring your bike in a bit more often as lower cost parts don't hold up as well and need a little more attention.
Also keep in mind the bike is a very low initial cost bike so you may want to bring your bike in a bit more often as lower cost parts don't hold up as well and need a little more attention.
#3
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Brake rotor is fine, works great, cranks/pedals are tight, Almost sounds like something inside the frame, cables rubbing internally? or the bearing going out? I have had a few new Trek bikes, and they always seem noisy from one thing or another. I hear you on the cost, you don't get much for $1100 these days. I'll drop it off at the shop, if the mechanical's are OK ,I may have to live with the noise.
#4
Clark W. Griswold
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Brake rotor is fine, works great, cranks/pedals are tight, Almost sounds like something inside the frame, cables rubbing internally? or the bearing going out? I have had a few new Trek bikes, and they always seem noisy from one thing or another. I hear you on the cost, you don't get much for $1100 these days. I'll drop it off at the shop, if the mechanical's are OK ,I may have to live with the noise.
Hopefully you didn't pay 1100 for that bike? A coil fork and Altus/Acera at 1100 is way too much. Trek charges a premium for their logo unfortunately so they get brand recognition and just charge more for less bike. The Specialized Rockhopper Elite is $1100 and is Deore and A RS Air Fork so the bar is there. It may not be a great bike but a coil shock and 9 speed just seems more like an $800 or less. I know prices are going up but Trek is ridiculous on their parts vs. price.
#5
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My model has the Deore w/clutch and a Rockshock Judy fork, it was in fact $1100 w/tax, first few miles it worked great.
#6
Clark W. Griswold
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A bike should work well past the first few miles.
#7
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I'll have to find another bike for mountain biking, I don't think this one is going to cut it. LBS only sells Trek's so I'll probably order something more robust.
#8
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If I were stuck on Trek and looking at a budget decent hardtail I would probably go Roscoe more travel on the fork. I realize I like that and sadly I have a really great fork I got on a closeout but it is only 100mm and my frame can go to 130 but I just don't want to flash that cash when I have a SID XX fork on it and would want to replace it either with another SID or similar quality or probably Fox though wouldn't need factory but would want factory for the Kashima.
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Your luck is exactly the opposite of what I've encountered with the several Treks my friends and I have purchased, including three who purchased Marlin 7's in the past year. However, if there's a problem and your dealer can't help, I've discovered that Trek's CS is excellent too. In one instance they replaced a rear shock absorber well past the warranty period because it was designed inadequately for its intended purpose. Be careful who you take advice from.
#10
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Your luck is exactly the opposite of what I've encountered with the several Treks my friends and I have purchased, including three who purchased Marlin 7's in the past year. However, if there's a problem and your dealer can't help, I've discovered that Trek's CS is excellent too. In one instance they replaced a rear shock absorber well past the warranty period because it was designed inadequately for its intended purpose. Be careful who you take advice from.
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I have never experienced it in a new Trek or other brand of new bike. The few times it's occurred (I ride a lot) were after years of use and I needed to replace the bottom bracket. I suggest you contact Trek's CS or since Trek has a 30 day 100% return policy, take it back, then buy a new one. IMO, you selected an excellent bike that should provide years of good service.
#12
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Thanks,
I've had the bike a year, but it only has about 5 months service (winters here), the bottom bracket bearings are gone, they were probably installed incorrectly or over torqued. Perhaps the dealer will repair it under warranty? I to have only replaced bottom brackets on old bikes with a lot of miles as well. With the cables rattling inside the frame, and this defective bracket, this bike sounds like a coffee can full of bolts going down the trail. Thanks for the info.
I've had the bike a year, but it only has about 5 months service (winters here), the bottom bracket bearings are gone, they were probably installed incorrectly or over torqued. Perhaps the dealer will repair it under warranty? I to have only replaced bottom brackets on old bikes with a lot of miles as well. With the cables rattling inside the frame, and this defective bracket, this bike sounds like a coffee can full of bolts going down the trail. Thanks for the info.