Measured Chain Stretch
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Thread: Measured Chain Stretch

  1. #1
    Senior Member elime's Avatar
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    Measured Chain Stretch

    Using the top scale I used 18" to see how much my chain has stretched -- I went from 1" to 19" to make things easier.

    I set the 1" mark (upside down 35" mark) exactly on top of the roller.

    P1200018.JPG

    The rivets are exactly 1/2" apart so 18" away (at the 19" or upside down 17" mark) there should be a rivet but there isn't. The rivet is at 18 3/16", therefore the chain has stretched 3/16" or .188"

    P1200017.JPG

    Allowable stretch is .006" per rivet, in this case 37 X .006 = .222", or just under a quarter inch. Therefore this chain is still useable even though it has become like a wet noodle when you hold it.

    This has been your update of Tony's never ending saga of him and his chain.
    Dryden-Tdub, Welder and WS23 like this.
    Long live the internal combustion engine!

  2. #2
    Senior Member Fred's Avatar
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    Your rear sprocket looks serviceable as well. Cleanliness apparently reaps benefits.
    Your technique looks more precise than how the manual recommends pulling of a single link away from sprocket and estimating deflection.
    Tony is so involved with his never ending chain saga that he actually gave me an o-ring chain from his supplies.
    Thank you Tony!
    This is the very chain that ended up being installed on plumbstraights bike here when we geared him up (down?) for my "easy trails" with a 55 tooth rear sprocket. So Randall, your chain comes with an interesting somewhat convoluted pedigree.
    And Tony your generosity keeps reaping benefits.
    How old and how many miles on that chain? It looks as supple as one of Randall's Hickory shirts.
    Last edited by Fred; 07-30-2015 at 12:48 AM.
    littletommy, elime and WS23 like this.
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  3. #3
    Senior Member elime's Avatar
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    Quote Originally Posted by Fred View Post


    This is the very chain that ended up being installed on plumbstraights bike here when we geared him up (down?) for my "easy trails" with a 55 tooth rear sprocket.
    How old and how many miles on that chain?
    I am glad the chain was put to a good use. I was afraid it was going to end up on the shelf in your garage for years and years the way it was doing in my garage.

    When I bought my TW it had a brand new chain on it and it was identical to the chain that is on it now. The thing that happened was I was more interested in riding the bike than maintaining it so I tried different sprays looking for an easy, quick way to lubricate the chain. Sorry to say that about 1000 miles later some links started seizing up, I had a trip to the Rubicon ( w/ Adam, David, Mr. Gizmo, and Shawndorf) planned in the very near future, the only chain the motorcycle shop had was the same as the one I was replacing, so I bought it along with new sprockets and vowed to take the best care of it as I could. I also remembered an old timer once told me to soak the chain in gear oil -- so I adopted that method. 28,000 or 29,000 miles later the chain and sprockets are still working though the teeth on the front sprocket are looking very worn. My goal is 30,000 TW odometer miles and I am very close.

    As an aside, plumbstraight's chain is the same as the one I have only it has the addition of o-rings. With proper care, maybe excessive care, it should last a long long time. You hear that plumbstraight?
    Fred, littletommy and admiral like this.
    Long live the internal combustion engine!

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  5. #4
    Senior Member WS23's Avatar
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    I call his condition: Chainal.
    (A combination of chain-anal)

    As you can read from his comments,("With proper care, maybe excessive care, it should last a long long time.") he is also trying to infect others with the disease. I for one was only able to fight off his infection for so long. I was even reprimanded for not soaking in Gear Oil when I took a short cut and soaked in motor oil. (But that won't happen twice!)

    Trust me, he has the Chainal bad and it is incurable!
    TW-Brian and elime like this.
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    The Parts Bike Rider (PBR)

  6. #5
    Super Moderator littletommy's Avatar
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    I was even reprimanded for not soaking in Gear Oil when I took a short cut and soaked in motor oil. (But that won't happen twice. QUOTE]
    -----------------------------------------------------------------------------------------

    You would think he wouldn't care about what you filled the bathtub with... Bet you had soft skin after that soaking though...
    TW-Brian, Fred, nippurr and 1 others like this.
    1st John 1:9
    If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

    John 3:16
    For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

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    For God sent not his Son into the world to condemn the world; but that the world through him might be saved.

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  7. #6
    Senior Member Fred's Avatar
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    ..and he could put a little of this or axle grease in his hair:
    2003 TW200 "Betty Boop"
    2006 TW200 "Nibbler", a.k.a. “Mr.Gizmo"
    Hidden Content All Things Considered I’ld Rather Be Motorcycling

  8. #7
    Senior Member WS23's Avatar
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    Fred......you've seen Tony before.......He doesn't have any hair!

    And on a side note: Sadly, I not only remember the Brylcreem commercials, I even used the stuff!
    Big D
    The Parts Bike Rider (PBR)

  9. #8
    Super Moderator littletommy's Avatar
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    Fred finds some of the greatest old stuff, doesn't he?
    Fred likes this.
    1st John 1:9
    If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

    John 3:16
    For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

    John 3:17
    For God sent not his Son into the world to condemn the world; but that the world through him might be saved.

    Hidden Content <<<Click here. Hidden Content

  10. #9
    Senior Member TW-Brian's Avatar
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    CAUTION: This picture is purposely intended to cause Tony to pull out whatever remaining hair that he has and to have nightmares tonight !

    100_5334.JPG
    littletommy, WS23 and bananachunks like this.

  11. #10
    Senior Member troll's Avatar
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    sooooo.... what's wrong with that chain? looks nice and clean to me.

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