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Forums Forums The Workshop 152 left crank, like finding jaws 3 on betamax – I need help

  • 152 left crank, like finding jaws 3 on betamax – I need help

     MartinK updated 11 years, 4 months ago 3 Members · 5 Posts
  • jonesthefugitive

    10 February 2009 at 11:20 pm

    Hi Everyone – just joined the forum.

    I’m in need of help. I need a 152 left arm crank for my Mountain Bike. You would have thought that this wouldn’t be a problem.

    The problem arises with the square taper.

    On my old battered crank, if you hold the crank vertical the taper is as if looking at a square. All cranks I have been able to find have the taper looking diamond shape. ( ihope you know what I mean as I am not up on tech jargon)

    Not one bike shop around could help me – Can anyone on this forum?

  • tomlevell

    11 February 2009 at 11:08 am

    What does the 152 stand for?

    Length of crank?

    Easiest solution is to buy a pair of cranks. If you’ve broken one of them the other might not be long for this world anyway.

  • jonesthefugitive

    11 February 2009 at 11:15 am

    Yes – 152 is the length.

    To buy the right hand crank involves buying and fitting the whole of the gears – above my head

  • tomlevell

    11 February 2009 at 11:31 am

    Ah right.

    This might help.

    If you can get the crank on and off buy a new set with rings. 152mm appears to be child bike length reading that and are very cheap but heavy.

  • MartinK

    11 February 2009 at 10:27 pm

    I once found the same issue – with the square taper being 45 degrees out between cranks. I though this was a truvative vs shimano thing. Certainly the cranks I took off (shimano) were 45 degrees different to the ones I replaced them with (truvative)…

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