Bad positioning of the handlebars can cause short-term discomfort, long-term neck and back problems, and inefficient riding. Most bicycles make it easy to change the length of the stem, or the pipe leading down from the handlebars, but finding the most comfortable and optimal position may require a little trial and error. There are some tradeoffs: the optimal height for power might be different than the optimal height for comfort during distance riding. Decide what your goals are for biking and set the handlebars accordingly.
Step 1
Note that there are three types of securing systems: bolt, locknut or quick release. Loosen whichever device your bike has and allow the handlebar to drop all the way down. You may want to spray the pipe with WD-40 or a similar lubricant. If rust has built up or dust has gotten onto the "stem" (pipe), it may be necessary to twist the bar as you wiggle it to the bottom.
Step 2
Sit on the bike in the proper position. It's best if there is an assistant who will do the measuring and the stabilizing of the bike, if necessary. The bike should be in the riding position, not leaned to the side.
Step 3
Hold your arms out to the optimal position for the handlebars. This will vary with the type of bike: for mountain bikes, when the rider should not be able to see the axle because it is blocked by the handlebars; for racing/road bikes, the rider's back should be flat (this often means the handlebars should be two or three inches above the height of the seat for a distance road bike; when racing, the rider may want to lower the handlebars); for cruising bikes, the rider should be able to sit perfectly upright without curving the back.
Step 4
Measure the distance to be changed. Set the ruler on the top of the handlebars and see where your fingers reach on the ruler. Write this measurement down.
Step 5
Pull the handlebar up to the level measured in Step 4. Again, this may require more lubricant and some wiggling. Make sure the handlebar is exactly perpendicular to the frame of the bike. Don't pull the handlebar up so high that there is not enough pipe left to be safe. The stem is usually scored to indicate a maximum point--do not go beyond this score. Buy a "riser" stem, if necessary, to extend the pipe.
Step 6
Screw it down tight. It could be dangerous if the handlebars slip from their position while riding. Be sure the handlebars won't move, even with significant pressure.
Tips and Warnings
- It may be necessary to disconnect the brake cables and adjust them if the handlebars are raised more than a few inches.
Things You'll Need
- Hex wrench or screwdriver
- Assistant
- Ruler
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