Old derallieur or chain tensioner?- Mtbr.com
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  1. #1
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    New question here. Old derallieur or chain tensioner?

    I have a few options here. My Avanti Montari has a worn out drivetrain and I have an attachment to it so instead of getting rid of it, just getting rid of the drivetrain.
    Theres a DMR single speed kit with a chain tensioner for $119 (NZ dollars) which the bike shop tells me is the best and most long lasting I can chuck on there.

    There is also a cheap and possibly a little bit crap version online, one is spring tensioned and one iis manually adjustable. Which of these is the better option?

    And finally, using the old derallieur as the tensioner. This seems a bit jumpy however.

    Just looking for advice from people who have done these options, or even a few of them. I want to just test the waters but at the same time if I enjoy it, I am a broke student so I want it to last!

  2. #2
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    My initial ss'ing was achieved via an XT derailleur. It worked flawlessly until I decided that single speed was the direction I wanted to stay in.

    I think tensioners suck. The one that sucks the least for me is the Rollenlager.

  3. #3
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    Ditch the tensioner and get a Forward Components EBB

  4. #4
    Cthulhu fhtagn
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    id go with just using the deraileur. i tried it on my bike and it works fine. just take most of the slack out of the chain so the deraileur is stretched out forward almost as fas as it can go and it wont be "jumpy"
    Specialized HardRock 29er
    Nashbar 29er SS

  5. #5
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    How will a forward components EBB on the front help with whats going on the back end?

  6. #6
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    Quote Originally Posted by emmathegreat
    How will a forward components EBB on the front help with whats going on the back end?

    Because you'll tension your chain permanently with the ebb and eliminate playing with the tensioner BS. I don't know what SS kit costs $119 when it's basically a cog, spacers and a tensioner. You tried finding the magic gerar yet?

  7. #7
    Schipperkes are cool.
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    http://www.mtbr.com/ssfaqcrx.aspx Read #9; that is my Ti Fat Chance pic taken in 2000 with a Shimano 600 road derailleur with Bullseye pulleys. The chain never came off.
    Quote Originally Posted by mikesee
    Better suited to non-aggressive 125# gals named Russell.
    I ride so slow, your Garmin will shut off.

  8. #8
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    Quote Originally Posted by SeaBass_
    Because you'll tension your chain permanently with the ebb and eliminate playing with the tensioner BS. I don't know what SS kit costs $119 when it's basically a cog, spacers and a tensioner. You tried finding the magic gerar yet?
    Yeah. It's not exactly 2:1, in fact its very far from it. 21 at the back, 32 at the front. Seems way off but i'll just have to get used to that, and then swap the back end for something smaller as I get better (and fitter). That $119 may sound crazy but thats $NZD, in the land of everything expensive.

    Cheers to banks for that very useful link.

  9. #9
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    All the talk of EBB's and specific type dropouts almost stopped me from even attempting a SS conversion.

    I bought this performancebike kit to try out and with a few mods it works great.

    https://www.performancebike.com/bike..._1031512_-1___

    The kit is spring tensioned and gave me trouble when the bike was bouncing over obstacles. Here is a stolen pic of how it is intended to be set up.



    I removed the spring added a couple spacers and changed the direction of tension to wrap around the rear cog.



    Works great even on a recent outing to rough as hell trail. On a side note that trail ride scared the poo out of me due to the rigid fork.



    This simple conversion kit works great.

  10. #10
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    that first picture you posted is funny because the bike has horizontal dropouts. it shouldnt even need the tensioner lol
    Specialized HardRock 29er
    Nashbar 29er SS

  11. #11
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    Quote Originally Posted by Mike Gager
    that first picture you posted is funny because the bike has horizontal dropouts. it shouldnt even need the tensioner lol
    I noticed that too, i figured he was running biopace chainrings.......Remember those?

  12. #12
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    nah before my time. looks like he has the big and middle rings position switched around

  13. #13
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    Quote Originally Posted by Mike Gager
    nah before my time. looks like he has the big and middle rings position switched around
    Wow, you are right on. Weird, maybe that was his method of chain alignment. Any way the method I use on my rig works great so far.

  14. #14
    Haphazard Adventurer
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    <img src="https://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs773.ash1/166313_491756414640_777184640_5471929_8232341_n.jp g" width="720" height="540" id="myphoto">
    seems to be working fine so far. the zip tie is actually there to take away tension. it was too tight!

  15. #15
    Oaktown Honkey on Strava
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    Tensioners are underated-if they last

    I love my ebb niner, other bike w/ tensioner is silent w/ proper setup, wish I had Horizontal dropouts on both. If money no object you could buy EBB set up if the bike is worthy. Maybe you should buy s.s. bike for s.s.-ing. I will in the future.

  16. #16
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    Quote Originally Posted by Mike Gager
    that first picture you posted is funny because the bike has horizontal dropouts. it shouldnt even need the tensioner lol
    Also love how all the front sprockets were left on. Way to not lose weight.

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