How do rear tensioners work?- Mtbr.com
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  1. #1
    pnj
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    How do rear tensioners work?

    I am having issues breaking derailers so I've decided to try SS.

    I am having trouble figuring out what I need exactly. I don't have a derailer hanger, do I need one to bolt the tensioner on or do some bolt to the frame?

    I purchased one that looks like this
    http://www.chainreactioncycles.com/M...?ModelID=20325

    but it requires a hanger.

    I really like the DMR one
    http://www.chainreactioncycles.com/M...?ModelID=20325

    what exactly does it bolt on to?

    I have a Giant STP, if it matters.

  2. #2
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    Yep, they bolt to the hanger. What you can do instead is get a front mounted one such as the YESS ETR-B

  3. #3
    pnj
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    I'm trying to not spend money I don't have....

  4. #4
    ilmfat
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    magic gear.

  5. #5
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    you said you don't have a der hanger, do you have horizontal drop outs? can you post a pic of the frame
    Quote Originally Posted by thefuzzbl
    aluminium has a tendency to fail when you need it most. i.e. you end up with a bad day.

  6. #6
    ilmfat
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    his hanger broke.

  7. #7
    pnj
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    Correct. I have two broken hangers. I paid 20 bucks for one and it broke in an hour. I can't afford to try and trouble shoot the problem so I've decided to just go to SS for now.

    Money is really tight. I'm looking around for things I can sell...

  8. #8
    Retro Grouch
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    <a href="http://www.pricepoint.com/detail/17543-075_YESBT8-3-Parts-382-Chain-Guides/Tensioners/Yess-ETR-B-Bottom-Bracket-Chain-Tensioner.htm"> This </a> should foot the bill; it attaches to your bottom bracket.
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    Just one more rep and I get the toaster!

  9. #9
    pnj
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    Genius!

    I asked about rear tensioners....

    I have a front chain guide I can't tension it once the crank arm is on.

  10. #10
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    Quote Originally Posted by pnj
    Genius!

    I asked about rear tensioners....

    I have a front chain guide I can't tension it once the crank arm is on.
    I'm not sure I understand your response. Thankful for help or annoyed?

    If you are going SS you can sell the chain guide and buy the ETR-B. It is a sprung tensioner designed for SS use and is adjustable after installation. Without a hanger that is one of your only options. Other options are a magic gear, an expensive EBB adapter or an expensive eccentric rear hub.

    Or you could buy another hanger and hope the problems were because of derailleur setup and won't carry over to an SS setup. Then you can use the tensioner you purchased

  11. #11
    pnj
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    I guess my main question was, do all rear tensioners bolt onto a hanger?

    that was answered in the first response. So I guess I need to buy a few things, a single speed conversion kit, and hanger. and probably a chain whip and casette tool..

    stupid bikes....

  12. #12
    ilmfat
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    so i was lookin for a hanger for cheap, no luck. but i saw an intact dropout/hanger. it looks poorly designed. i could see that thing snappin just from clampin down the QR. what were they thinking? well, i guess... not like its a dj bike or anything...

  13. #13
    Retro Grouch
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    They say insanity is doing the same thing over and over and expecting a different result. You have a problem breaking derailleur hangers and you have been shown how to tension a SS without one (the Yess ETR-B is a tensioner not a guide). However now that I look back on your post I see you already bought a rear tensioner before you realised it needed a derailleur to work; sorry about that.

    Quote Originally Posted by pnj
    So I guess I need to buy a few things, a single speed conversion kit, and hanger. and probably a chain whip and casette tool..
    Seems you would need these items regardless of how you would tension the chain. IMHO, if you are hard on derailleur hangers than stay with your original plan and ride without one.

    Quote Originally Posted by boomn
    If you are going SS you can sell the chain guide and buy the ETR-B. It is a sprung tensioner designed for SS use and is adjustable after installation. Without a hanger that is one of your only options. Other options are a magic gear, an expensive EBB adapter or an expensive eccentric rear hub.
    .

    If you are going to ask questions, you risk hearing answers different then what you wanted.

    Brad
    Just one more rep and I get the toaster!

  14. #14
    A Gentleman and a MTBR'
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    make one.

  15. #15
    pnj
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    I think I'm going to go with the DMR stainless steel thing. I just want to ride my bike, not work on the damm thing.

  16. #16
    one chain loop
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    Quote Originally Posted by pnj
    stupid bikes....
    always remember, bikes doesn't have the ability to think and make choices. you do.
    everything sucks but my vacuum cleaner.

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