Headset inspection, Quill type assemblies, Ahead set’ type assemblies – Apollo Radius User Manual

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-Adjusting Cup/Cone

- Top Head Cup/Cone

— Bottom Head Cap

Headset Inspection

The headset is responsible for locking the fork

into the frame. Every month the headset bearing

adjustment should be tested. This is done by

standing astride the frame top tube with both feet

on the ground and firmly applying the front brake

and rocking the bicycle back and forward.

If the headset is loose, it needs to be tightened to

avoid potential damage to both the bicycle and the

rider. However, do not over-tighten. If the fork tends

to stick or bind at any point when rotated slowly

sideways, the bearings are too tight.

Quill Type Assemblies

Adjustment

To adjust the headset the top locknut needs to be

loosened or removed completely, as well as the

lock washer and reflector bracket, if fitted. Turn the

adjusting cup clockwise until finger tight. Replace

the lock washer or reflector bracket and using an

appropriate wrench to re-tighten the locknut.

Note: Bearing damage will occur if over-tightened.

Prior to riding always check that the headset is properly

adjusted and that the headset locknut is securely fastened.

‘Ahead Set’ Type Assemblies

When assembling a new bike with this type of fitting, the dust cap covering the Allen

head bolt needs to be removed and the bolt holding the top plug undone. Remove the

cardboard cover. Slip the handlebar stem over the exposed fork steerer and replace the

top plug. The handlebars and the forks need to be facing the front. Using the Allen head

centre bolt, secure the steering assembly until there is no freeplay. Take care not to over

tighten. Tighten up the binder bolts which clamp the handlebar stem to the fork steerer.

Ensure the handlebar stem cannot turn in the steerer tube.

To adjust the headset after the bicycle is assembled:

- Loosen the stem binder bolts.
- Use the Allen bolt to re-adjust the compression mechanism.
- Re-fasten the stem binder bolt firmly.

Unlike standard headsets, the 'Ahead Set' has an unthreaded, full-thickness bicycle fork

steering tube. Adjustments are made using an Allen headed compression bolt, and then

are fastened by clamping the handlebar stem directly onto the fork steerer.

RAOM0507 Apollo Bicycle Company Pty. Ltd. ABN: 60 001 914 469

Updated 23/05/07