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  1. #1
    Senior Moment Litespeed's Avatar
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    Can't figure out this noise

    My dear husband has been trying to figure out the source of a sound like a grinding rubbing noise. He has replaced both chains and both bottom brackets, but the noise is still there, worse then ever. It's especially noticeable when pressure is applied to the pedals.

    He has finally figured it must be in the rear hub. He has finally given in and will be taking it to the shop that originally put the bike together, explaining to the mechanic what he thinks it is. He likes doing most of the work himself, but this is just a bit complicated for even him.

    We are suppose to take the tandem with us to the Tour de Palm Springs, so hopefully it will be solved by then, otherwise we take our singles.
    Cats are people too.

  2. #2
    pan y agua merlinextraligh's Avatar
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    It's your ear rings.

    We had this annoying noise that I could not diagnose. Kept testing different hypothesis. Finally figured out that my wife's earings with multiple pieces dangling were swirling in the wind making the noise.
    You could fall off a cliff and die.
    You could get lost and die.
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  3. #3
    Senior Member geranimo57's Avatar
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    Quote Originally Posted by merlinextraligh View Post
    It's your ear rings.

    We had this annoying noise that I could not diagnose. Kept testing different hypothesis. Finally figured out that my wife's earings with multiple pieces dangling were swirling in the wind making the noise.
    Yes.. this! Merlin you have shown another side, I LOLed.. Thanks!

  4. #4
    PMK
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    There was another post running here for a bit. Turned out it was a bad rear hub.

    Didn't see where you mentioned any details about your bike, but maybe these are similar problems on similar equipment. These folks had a DT Swiss / Hugi hub. The model was a TD installed on a Cannondale.

    Cannondale tandem: that shush shush pause noise

    Hope it helps.

    BTW, we have DT hubs and I will say they are very easy to work on. If it's defective that may be another story, but I have bought parts direct when I converted a 140mm axle to 145mm.

    PK
    Last edited by PMK; 01-30-09 at 09:25 PM.

  5. #5
    Senior Member 72andsunny's Avatar
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    Quote Originally Posted by merlinextraligh View Post
    It's your ear rings.

    We had this annoying noise that I could not diagnose. Kept testing different hypothesis. Finally figured out that my wife's earings with multiple pieces dangling were swirling in the wind making the noise.
    Oooh, also check:

    1) The two loose allen wrenches in your handlebar bag that you always carry around but never use
    2) Your Tamer suspension seatpost; it loves to make all sorts of noises that can sound like anything except a suspension seat post
    3) For mud or grease on your (classic) Look cleats; they love to make all sorts of noises that sound like anything except your cleats/pedals

  6. #6
    The Jet Stream Alex & Deya's Avatar
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    Quote Originally Posted by Litespeed View Post
    My dear husband has been trying to figure out the source of a sound like a grinding rubbing noise. He has replaced both chains and both bottom brackets, but the noise is still there, worse then ever. It's especially noticeable when pressure is applied to the pedals.

    He has finally figured it must be in the rear hub. He has finally given in and will be taking it to the shop that originally put the bike together, explaining to the mechanic what he thinks it is. He likes doing most of the work himself, but this is just a bit complicated for even him.

    We are suppose to take the tandem with us to the Tour de Palm Springs, so hopefully it will be solved by then, otherwise we take our singles.
    He should check the rear wheel skewer. Even if it looks like is really tight it can make the noise you described, and most times is misdiagnosed with a faulty bottom bracket. The best option is to try a different skewer. Good luck.

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    If you have a Shimano hub: I've had the freehub body get loose. It requires a 10mm allen to tighten it back up.

    dan
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  8. #8
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    Road with a lot of creaking for a while, I kept thinking it was from BB. New bike shop "import" who also rides a tandem with a Thudbuster seatpost said to me one day (without telling him about the problem) .." do you lube the joints on the seatpost?" ... then he went on to tell me how he lubed his up and how it made the ride a lot quieter ... went home, followed his advice and the next month of riding was bliss looks like I am going to have to do it every month or take it all apart and lube it properly.

  9. #9
    Oldie, just not here! Onegun's Avatar
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    Quote Originally Posted by Litespeed View Post
    My dear husband has been trying to figure out the source of a sound like a grinding rubbing noise. He has replaced both chains and both bottom brackets, but the noise is still there, worse then ever. It's especially noticeable when pressure is applied to the pedals.
    Lots of good advice, and some things I never thought would make noise! Two I didn't see were noises I recently diagnosed .. one on a friend's single, and one on our tandem. BOTH sounded like bottom bracket/pedal grinding noises.

    On the single, it was the saddle! When the saddle flexed from pushing hard it was making the sound, but since it was under your butt it was reflected down and sounded like the bottom bracket! The owner had been trying to find it for months, and I just got lucky on my first test ride of the bike when I noted it went away when I stood.

    The other was on our tandem, and I'd been trying to isolate it for months. Checked bottom bracket, removed, cleaned and re-greased eccentric, changed chains, changed pedals, rebuilt pedals, cleaned entire drive train, yada, yada, yada.

    It was my shoes. Having gotten wet a few times and then dried, the leather on the back side of the velcro strap rubbing against the leather of the upper was making a creaking noise like a loose crank arm or bottom bracket when I pushed hard. Some leather conditioner between the two made us silent again.

    So when testing, don't forget to stand up, and to take a ride in your sneakers rather than your cycling shoes and see what happens.
    BICYCLE - [bahy-si-kuhl] - Noun :> A medical device used to correct the common geriatric condition of OFS, (Old, Fat & Slow), in a manner that does not induce brain-decaying boredom like walking or running.

    2005 Trek T2000 Tandem, 2003 Burley Tosa Tandem, Pacific Dualie beater tandem, and 6 singles including 2 fixies.

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  10. #10
    Santana Couple
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    I have a clicking noise some of you may help me solve. It is in the rear wheel. I thought it was a loose spoke so I had the wheel trued. Then I lubed where spokes cross each other, it is still clicking about once per revolution. My wife/stoker can not determine a tire reference to locate when it clicks. It makes no difference if we peddle or not. Any suggestions?

  11. #11
    pan y agua merlinextraligh's Avatar
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    ^ magnet hitting the speed sensor on your computer?

    Reed valve in the computer pickup clicking?

    (of course this assumes you have a computer and the pickup is mounted in the back.)
    You could fall off a cliff and die.
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    You could hit a tree and die.
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  12. #12
    hors category TandemGeek's Avatar
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    Quote Originally Posted by apage4u View Post
    I have a clicking noise some of you may help me solve. It is in the rear wheel. I thought it was a loose spoke so I had the wheel trued. Then I lubed where spokes cross each other, it is still clicking about once per revolution. My wife/stoker can not determine a tire reference to locate when it clicks. It makes no difference if we peddle or not. Any suggestions?
    Is the rim by chance an older MAVIC T217?

    If not, what rim and hub are you using?

  13. #13
    Santana Couple
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    Yes it has Maviv rims and Hadley hubs. The Mavic label is faded. The last number is 7 so it may be t217. It was built in 2004. And no the magnet is not hitting the sensor.

  14. #14
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    Quote Originally Posted by apage4u View Post
    Yes it has Maviv rims and Hadley hubs. The Mavic label is faded. The last number is 7 so it may be t217. It was built in 2004. And no the magnet is not hitting the sensor.
    All spokes evenly tensioned? I had something like what you're describing and it turned out to be a slightly loose spoke. Problem went away when I lubed the eyelet/nipple interface. But once the lube dried up the clicking came back. That's when I discovered the loose spoke. After retensioning, the wheel is silent.

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    Santana Couple
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    What is the proper tension for a tandem? The shop mechanic here did not seem to understand me when I told him if was from a tandem and need higher tension. I have started buying my own tools.

  16. #16
    Senior Moment Litespeed's Avatar
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    They guy at the bike shop says he thinks it's the captain's seat post that is making noise. My husband still isn't convinced.

    Husband will pick up the bike tomorrow and if we get a chance we will ride it and see if the noise is still there. In the mean time, husband has ordered another wheel and cassette.

    Husband will take apart original hub when we gets the bike back. Not sure if the bike shop wants to save us money or is just to lazy to look at the hub. It would require a special tool to get off the drag brake (they can't find the tool, but had it when they originally put bike together for us).

    Story goes on.........................
    Cats are people too.

  17. #17
    Oldie, just not here! Onegun's Avatar
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    Quote Originally Posted by Litespeed View Post
    They guy at the bike shop says he thinks it's the captain's seat post that is making noise. My husband still isn't convinced.
    Again, easy diagnosis. When the noise starts, have the captain stand and pedal. If it's still there, then the stoker needs to let go of the bars and sit up, too. If it's STILL there, it's NOT the captains post or saddle.
    BICYCLE - [bahy-si-kuhl] - Noun :> A medical device used to correct the common geriatric condition of OFS, (Old, Fat & Slow), in a manner that does not induce brain-decaying boredom like walking or running.

    2005 Trek T2000 Tandem, 2003 Burley Tosa Tandem, Pacific Dualie beater tandem, and 6 singles including 2 fixies.

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  18. #18
    Senior Moment Litespeed's Avatar
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    Before we took it in, we had my husband quit pedaling and I would keep pedaling and then the other way around to see if the noise was in the pedals. We haven't mastered standing yet, so can't do that test.

    Got bike back from shop. Took it out for a 20 mile test ride, about 1000 feet of climbing. So far no noise.

    Saturday if it doesn't rain, we will take it out again for a longer ride. The noise usually shows up on the long climbs.
    Cats are people too.

  19. #19
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    Captain can stand without the stoker aboard. That should work.

    Advanced technique would be for the stoker alone to pilot the bike, but you need very long arms ;-)

  20. #20
    Senior Moment Litespeed's Avatar
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    Finally quit raining long enough to take the tandem for another real test ride on some serious hills.

    Sounds (or actually it DOESN'T sound), like the bike shop was right about the noise. Must have been from the seat post. We thought we heard it very slightly at one point, but it disappeared quickly.

    Now what do we do with the extra wheel set my husband bought? Since we only have 5400 miles on the tandem, doesn't look like we will be using it anytime soon. Well I guess it's good to have a spare set JUST IN CASE.
    Cats are people too.

  21. #21
    hors category TandemGeek's Avatar
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    Quote Originally Posted by Litespeed View Post
    Sounds (or actually it DOESN'T sound), like the bike shop was right about the noise.
    How about that... Congrats on finding a good bike shop and mechanic. They're far and few between.

    Quote Originally Posted by Litespeed View Post
    Well I guess it's good to have a spare set JUST IN CASE.
    Absolutely. If you really like to ride and ride a lot, it pays to have a spare set of wheels around... or even an entire spare tandem.

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    Sounds like the problem got solved, but I'll add my bit: we had a similar mysterious noise. I pulled out both bottom brackets, re-greased the threads & eccentric to eliminate any metal-metal creaking, and the creaking disappeared for a while. But it returned. We tried diagnosing with my stoker pedalling (no noise) and with me pedaling (creaking present), which was why we thought it was somewhere in the captain's cockpit. Wrong. It was loose chainring bolts on the stoker's timing crank. The noise had disappeared when I did the bottom bracket work because I tightened up the timing chain just enough to eliminate any play in the rear timing chainring. I guess the noise didn't show up when we tried to diagnose it with only my stoker pedalling, because there was no pressure on the timing chain.
    Moral of the story: when you are going through long checklist of things that cause mysterious creaking noises, check that the chainring bolts are tight!

  23. #23
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    Noise

    You don't mention an Ariel drum brake, but we have one on our Co-Mo Speedster and we had a mysterious noise that turned out to be the face plate on the drum brake which had come loose from the pivot for the shoes. It was not fixed and therefore was rubbing on the rim of the drum. I had a local mechanic spot weld the face plate to the pivot and the sound has vanished.

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