Viewing 19 posts - 1 through 19 (of 19 total)
  • tightening cassette to 40nm by feel how tight is right?
  • moonboy
    Free Member

    Recently picked up a new wheel set and now have the fear about overtightening the cassette – how tight is 40NM without shelling out for a torque wrench??

    mrmo
    Free Member

    do it tight, give it a few clicks, assuming your lock ring clicks. never had a problem using a 12″ adjustable to get it tight. never had it come loose either.

    brant
    Free Member

    40Nm is 4kg at the end of a 1m long bar, 8kg at the end of a half metre bar, 16kg at the end of a 25cm spanner.

    Tight “then a few clicks” as MrMo says.

    Think about the forces on your freewheel retaining nut. It’s nothing much. What you’re really doing is loading it so it doesn’t precess cyclicly past the notches and wind itself off.

    moonboy
    Free Member

    few clicks it is!

    thanks chaps 🙂

    scaredypants
    Full Member

    Don’t be a pansy

    BASTARD TIGHT !!!!!!

    Onzadog
    Free Member

    Always thought 40Nm was a bit overkill for a cassette lock ring.

    tonyd
    Full Member

    Bit more, bit more, touch more, that should do it!

    Freester
    Full Member

    Gorilla tight. HTH

    cynic-al
    Full Member

    few clicks all that’s needed.

    bren2709
    Full Member

    Tights tight and too tights f*ked!

    ampthill
    Full Member

    It needs to be really tight to prevent movement between the casette and free hub. Its not just a decoration.

    Would be weird if the the recomended torque asetting was wrong.

    Even od a 12 inch spanner its a fair bit of force

    damo2576
    Free Member

    40Nm is 4kg at the end of a 1m long bar, 8kg at the end of a half metre bar, 16kg at the end of a 25cm spanner.

    Assuming gravity at 10m/s2 in that example.

    marsdenman
    Free Member

    I use my Torque Wrist™ to Nip It Up then rest wheel on floor and apply whatever 15+ stone is, bending from the waist, to the end of my 10″ adjustable spanner, works out at.
    Nothing loose, or broken…. Yet 😉

    jmason
    Free Member

    I’ve done the few clicks thing before, only to have the cassete start wobbling around after a few miles. 40nm is really bloody tight (and probably overkill) just make sure it feels nice and tight.

    thisisnotaspoon
    Full Member

    Steel freehub = bastard tight
    Aluminium freehub = just a few clicks

    cynic-al
    Full Member

    damo2576 – Member
    40Nm is 4kg at the end of a 1m long bar, 8kg at the end of a half metre bar, 16kg at the end of a 25cm spanner.
    Assuming gravity at 10m/s2 in that example.

    You missed out the assumption that the force is radial. And you thought he might fix his bikes on another planet?

    FAIL!

    chives
    Free Member

    Or just get yourself a torque wrench.

    toys19
    Free Member

    You missed out the assumption that the force is radial. And you thought he might fix his bikes on another planet?

    FAIL!

    You missed out the difference between an engineer and a physicist. 10 is accepted as near enough the world over. And when you apply the force with your hand you constantly readjust your grip to keep the force tangenital, otherwise you would never be able to do a nut up. And the force at any tangent to the circle x the distance is the torque, see if you Al can define the vector of your radial force?

    ampthill
    Full Member

    Do you really do Al freehabs less tight?

    Thats probably why they get scored and damaged

    Nit that such a think has ever graced my bike….

Viewing 19 posts - 1 through 19 (of 19 total)

The topic ‘tightening cassette to 40nm by feel how tight is right?’ is closed to new replies.

Thanks for popping by - why not stay a while?IT'S FREE

Sign up as a Singletrack Member and you can leave comments on stories, use the classified ads, and post in our forums, do quizzes and more.

Join us, join in, it’s free, and fun.