Figure 1:
Aerobar
The handlebar system—including an aerobar (Figure 1)— the parts you hold with your hands when riding a bicycle, is primarily responsible for your ability to steer and control the bicycle. In addition, the handlebar and aerobar work with the seat to define your posture on the bicycle, so the bars add comfort and efficiency to your cycling. Information on proper positioning of the parts is found in the section Fitting the bicycle.
The handlebar and aerobar are connected to the bicycle by the stem. This section explains how to inspect, adjust, and lubricate your aerobar. Before working on your bicycle, read the Warning about Mechanical Work.
Warning—An improperly adjusted or tightened aerobar can cause you to lose control and fall. Make sure the aerobar is positioned and tightened properly before riding the bicycle.
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Figure 1: Aerobar |
If you are unsure of the safety of your handlebar system, do not ride the bicycle; take the bicycle to your dealer for adjustments.
Before every ride, check the handlebar and aerobar for signs of stress or fatigue.
Once a month test the security of the handlebar and aerobar by attempting to rotate them in the stem. They should not move. When turning the handlebar or aerobar side-to-side, make sure that no cables are stretched or pinched.
Check that all stem bolts are tightened to the torque specifications.
If your bicycle has a carbon fiber handlebar or aerobar, also follow the carbon fiber composite inspection procedures.
To determine the best position of the handlebar or aerobar, see Fitting the bicycle .
If your handlebar or aerobar is made of carbon fiber composite, read about carbon parts compatibility before making any adjustments.
1. Loosen the handlebar clamp bolt(s) on the stem just enough that the handlebar can be rotated in the stem.
2. Position the handlebar to the desired angle, making sure it is centered in the stem.
3. Tighten the stem bolts to clamp the handlebar.
You can adjust the handlebar height by adjusting the stem: changing the angle of an adjustable-rise stem, raising a quill-type stem, or moving spacers under a direct-connect stem.
Also see the manufacturer's owner's manual.
Some bicycles are equipped with aerobars, providing an aerodynamic position with elbow rests (Figure 2).
1. Loosen the aero extension clamp bolt(s) on the handlebar just enough that the extensions can be moved.
2. Position the extensions to the desired length, making sure the ends of the extensions are within the clamp area (Figure 3).
3. Tighten as in Inspect your handlebar regularly.
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Figure 2: Adjustment bolts on aero bar |
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Figure 3: Adjustment bolts on Profile aero bar |
1. Loosen and remove the elbow pad mounting bolt(s) (Figure 4).
2. Position the elbow pads to the desired position.
3. Reinstall the bolts, and tighten as in Inspect your handlebar regularly.
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Figure 4: Elbow pad attachment bolts |
Once a year, lubricate the stem.
For stems or handlebars made of carbon fiber composite, read the section on Carbon Composite Inspection and Use.
