Q42 and Q47 cranksets

160mm or 165mm crank length (other crank lengths to follow). The Q42 spider is designed for track bikes and the Q47 for road/TT bikes. The spiders are interchangeable, so either can be used with the same cranks. 

Designed to fit 30mm diameter BB (not supplied).

Technical and aero testing information

Coming soon!

What's in the box?

Either Q42 or Q47 spider, cranks, 30mm axle, spider lockring, crank self-extraction bolts and washers, pre-load and wave washer, c-spanner for pre-load and 1.5mm  hex key for pre-load.

Drive-side crank, spider, lockring and axle will come pre-assembled (to dis-assemble to change spider, see below). Non drive-side crank and pre-load will also be pre-assembled.

Crankset fitting instructions

Tools required: 

  • Torque wrench
  • 8mm hex key
  • 1.5mm hex key (supplied)
  • C-spanner (supplied)
  • Grease

1. Put drive side BB dust cover in place.

2. Push drive-side crank/spindle through BB from drive side.

3. Put non drive-side BB dust cover in place.

4. Put wave washer on spindle on non drive-side.

5. Put non drive-side crank onto spindle, adding grease to the inside of the threads. Use 8mm hex key to tighten (turning clockwise, as shown on the self-extraction bolt cover). Max torque shown is 54NM, but we recommend 30 - 40NM.

6. Tighten pre-load using C-spanner, to point where wave washer is mostly, but not completely, compressed.

7. Tighten pre-load hex bolt using 1.5mm hex key. Do not overtighten!

8. Fit chainring and chain.

To remove crankset, reverse these steps. Note that the self-extraction bolt covers are never removed.

For a short video showing these steps, click here.

Spindle removal and refitting instructions

Tools required same as above, plus a ParkTool BBT-22 bottom bracket tool for spindle lockring. Remove crankset from bike using instructions above.

1. Remove crankset using instructions above.

2. Use 8mm hex key in self-extraction bolt to remove spindle from drive-side crank (turning anti-clockwise).

3. Use BBT-22 tool to remove spider lockring (turning anti-clockwise).

4. Drive-side crank and spider will then separate.

5. Fit drive-side crank into new spider. Grease inside of threads and then use BBT-22 tool to tighten spider lockring (turning clockwise, max torque 40NM).

6. Grease spindle end and fit into spider and tighten using 8mm hex key in self-extraction bolt (turning clockwise). Max torque 54NM, but we recommend 30 - 40NM.

For a short video showing these steps, click here.

7. Fit to bike using crank fitting instructions above.