Up Pressure or Down Pressure Tensioner?- Mtbr.com
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  1. #1
    XC Rider
    Reputation: dozerdog's Avatar
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    Up Pressure or Down Pressure Tensioner?

    I am trying to decide on a tensioner to convert my 1x9 Redline to a SS. In searching around I have seen pictures of up pressure as well as down pressure tensioners. Is there one that will go either way? Advantages/disadvantages of either? Thanks!

  2. #2
    Off the back...
    Reputation: pinkrobe's Avatar
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    I like the "up" versions because they increase the amount of wrap around the rear cog. Without enough wrap, the chain skips. Nobody likes a skipping chain...
    @pinkrobeyyc
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  3. #3
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    Surly Singulator will go up or down (depending on which spring you use)... which way you go depends on your chainline and how close to the CS the chain ends up. If you can, go with push, up as PR mentioned above, for more chain "contact" on the cog.

  4. #4
    Drinking the Slick_Juice
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    up is the best choice
    "If women don't find handsome , they should at least find you handy."-Red Green

  5. #5
    local trails rider
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    Up, if you can. To get more contact between chain and cog.

    In my setup, I need to have chain length very near perfect to make it work.

  6. #6
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    Only problem that I have had with the push-up tensioner is that I have a hard time getting the rear wheel out.

  7. #7
    XC Rider
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    Thanks guys who else besides Surly makes up pressure tensioners?

  8. #8
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    Any of the rigid tensioners can be run in push up mode. Off the top of my head, Rennen, DMR, and Sette make rigid tensioners.

    Unless you're running a suspension frame, there is ZERO reason to run a sprung tensioner. We've gotten rid of our derailleurs, so why bolt another spring onto our bikes?

  9. #9
    skillz to pay billz
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    tried to set up a singulator on a FS. every 3-4 full rotations of the chain results in the chain running up on the tips of the cog's teeth as if it not the right length. any ideas?

  10. #10
    XC Rider
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    thanks again quick question though how does the rennen or sette knock of adjust in and out for chain alignment?

  11. #11
    Rolling
    Reputation: lidarman's Avatar
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    I prefer up for more chain wrap. But recently i changed my ratio and when I run it up, the chain wants to rub on the stay. I can't shorten the chain further (it's in the two link no-man's land) so I run it down with a scary amount of slack--especially since it's a 12 tooth cog. However, no problems with slipping.

    Nooby, is your cog worn?

    Dozerdog, I'm speculating but I think the roller cog groove is wide so the chain and find it's normal chainline.

    <a href="https://photobucket.com" target="_blank"><img src="https://i6.photobucket.com/albums/y228/lidarman/Bikes/RDM_5631b.jpg" border="0" alt="Photobucket"></a>

  12. #12
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    Quote Originally Posted by dozerdog
    thanks again quick question though how does the rennen or sette knock of adjust in and out for chain alignment?
    The rigid ones rotate up and down, and then get locked in place by a bolt into the derailleur hanger. So you set the tension, and then lock it in place.

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