Zwift Ride - Crank Protector

Work in progress; feedback for improvements is welcome.

This is a simple cover for the cranks and bottom bracket of the Zwift Ride frame.

Some riders have experienced issues with sweat damaging the chainring and/or bottom bracket bearings, leading to rust and premature bearing failure. This cover was made to resolve the issue by shielding cranks against sweat & fluids.

You have three options for installing this cover:

1.  Reinstall the bottle cage, sandwiching the cover between the bottle cage and the frame.

    Just print the cover.

2.  No bottle cage. Print additional countersunk spacer.

3.  Print additional spacer (for use with third-party bottle cages).

    You’ll need longer M5 bolts if you choose this option.

Installation:

You have three options for installing this cover:

1.  Reinstall the bottle cage, sandwiching the cover between the bottle cage and the frame.

    Just print the cover.

2.  No bottle cage. Print additional countersunk spacer. Reuse the bolts provided by Zwift.

3.  Print additional spacer (for use with third-party bottle cages).

    You’ll need longer M5 bolts if you choose this option.

Steps

1. Remove the rear bottle holder.

2. Add electrical/insulation tape to the frame in the front slot.

   (Optional but recommended. This is to prevent chafing on the frame when the frame flexes.)

3. Attach the cover to the frame.
4. Insert bottle cage into the slot in the cover.
5. Press the bottle cage firmly against the frame while tightening the bolts until the cover is snug and secure (do NOT overtighten).
6. Ride and adjust the height of the protector if necessary.

Material:

I've printed with 5 walls and about 30% infill.

Layer height, 0.2 mm or lower (with 0.4 nozzle).

PLA or PETG should be fine.

If you are interested in selling prints of this model, please contact me.

Known issues

• Frame flex can cause rubbing on the frame at the front slot of the cover. Next version will have a wider slot.

  Add electrical tape to the frame while installing the cover or widen the slot slightly by removing some material.

Changelog

• New version that reuses the rear bottle cage to mount the cover.

  Additional spacer for third-party bottle cages. The spacer can also be used without bottle cage.