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Introduction

This guide will instruct on the installation process for e*thirteen Helix direct mount chainrings onto Helix Cranks

  1. Lay out parts on a clean workbench workbench. If installing ring on a used crank, ensure direct mount interface splines are clean.
    • Lay out parts on a clean workbench workbench.

    • If installing ring on a used crank, ensure direct mount interface splines are clean.

  2. Identify the chainline requirements of your bike. Helix rings are flip-flop and can achieve either 53mm (Boost) or 56mm (Super Boost) by turning the ring over. Ensure splines are clean and add a very light layer of grease to the spline interface on the chainring. Slide the ring onto the direct mount splines with the chainline size you need facing outward and the arrow showing "Pedal" aligned with the crank arm access.
    • Identify the chainline requirements of your bike. Helix rings are flip-flop and can achieve either 53mm (Boost) or 56mm (Super Boost) by turning the ring over.

    • Ensure splines are clean and add a very light layer of grease to the spline interface on the chainring.

    • Slide the ring onto the direct mount splines with the chainline size you need facing outward and the arrow showing "Pedal" aligned with the crank arm access.

    • Thread on the silver chainring lockring by hand until it bottoms out on the chainring.

  3. The chainring lockring will need to be tightened to 30Nm of torque. The preferred method to achieve correct torque spec is to use a torque wrench. The e*thirteen chainring lockring tool which is provided with the cranks has 2 interfaces which can be used - 36mm flats for a crowsfoot attachment or Shimano FC-32 Tool Spline interface.
    • The chainring lockring will need to be tightened to 30Nm of torque.

    • The preferred method to achieve correct torque spec is to use a torque wrench.

    • The e*thirteen chainring lockring tool which is provided with the cranks has 2 interfaces which can be used - 36mm flats for a crowsfoot attachment or Shimano FC-32 Tool Spline interface.

    • If a torque wrench is not available proper torque can also be achieved by turning the lockring 90 Degrees from it's hand tight snug position.

    • If using the snug +90 degree method, the easiest way to achieve this is to put the chainring lockring tool in a vice. Alternatively a large crescent wrench can also be used.

  4. Ensure that the lockring is sitting below the cranks flange that interfaces with the BB.
    • Ensure that the lockring is sitting below the cranks flange that interfaces with the BB.

    • Reinstall crankset on bike and time for a ride!

Conclusion

Thanks for reading, now get out there and ride!

e*thirteen - Chris C

Member since: 12/07/2012

9 Guides authored

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