Chain Tugs?

wilkij1975
wilkij1975 Posts: 532
edited September 2009 in MTB workshop & tech
Hi

I am thinking of getting an On One Scandal which has a slot dropout. I will be running the bike geared and have been adviced to use a chain tug. The problem is I have no idea how a chain tug works.

Can anyone help point me in the right direction or have any photos of one in action that I could look at?

Thanks in advance.

Comments

  • dave_hill
    dave_hill Posts: 3,877
    wilkij1975 wrote:
    Hi

    I am thinking of getting an On One Scandal which has a slot dropout. I will be running the bike geared and have been adviced to use a chain tug. The problem is I have no idea how a chain tug works.

    Can anyone help point me in the right direction or have any photos of one in action that I could look at?

    Thanks in advance.

    Linky to DMR chain tugs HERE

    Your axle goes through the hole in the silver bit. The black cap rests against the open end of the dropouts. The screw is captive in the silver bit and passes through a thread in the black cap.

    Once it's all assembled, you tighten the screws on the chain tugs and this moves the wheel backwards in the frame until the chain is at the desired tension. You also need to be careful to do this equally at both sides or you'll end up with the wheel out of alignment.

    Once everything's tensioned and aligned just lovely, tighten your (wheel) nuts, vicar, to lock the wheel in place.

    Designs of chain tug (tensioner) vary from manufacturer to manufacturer but they all work on the same principle.

    Another simple way of doing it is to get the axle drilled and tapped to line up with the dropouts and just thread a smaller (typically M5) screw through to rest against the inside of the dropout.
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  • OK think I'm getting it! That onelooks completely different to the one on On One's website.
    Do you need one on both sides as On One say only on the drive side?
  • dave_hill
    dave_hill Posts: 3,877
    I suppose that you could get away with just the one, but persoannly I'd want a pair so that you can be sure that the wheel stays properly aligned.
    Give a home to a retired Greyhound. Tia Greyhound Rescue
    Help for Heroes
    JayPic
  • Maybe 2 is better for a mtb (I don't know) but certainly for a road fixed gear one is plenty. The Surly tug nut is nice.

    Matthew