wret
15+ Year Contributor
- 2,931
- 90
- Jul 3, 2003
-
Bel Air,
Maryland
After pounding my wheels and suspension through some cavernous pot holes over the winter (bad enough to damage a tire), I began to suspect my alignment was
well, out of alignment. For one thing, I perceived that my steering wheel was no longer centered while traveling straight roads. So I devised a simple toe alignment checker that can be used quickly and easily.
-Mount a laser level on flat piece of wood. $9.99 at Harbor Freight. http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=41895
-Measure how much standoff there is between the flat mounting surface and the beam emitter. In my case it was 6.3 cm.
-Center your steering wheel and roll back and forth to make sure your tires are settled in to the wheel position.
-Hold the device against a front wheel aimed toward the rear of the vehicle. I used a bungee cord and screw eyes to secure it to the wheel.
-Set up a target that is flush with the rear wheel. A cardboard box will do.
-Activate the laser and direct toward the target.
Measure the distance from the tire surface to the beam and subtract the standoff amount (6.3mm in my case). If you end up with a positive number you have toe-in, negative means toe-out. Since the distance from the beam emitter to the target was 230 cm, and a 1° arc of a circle with a radius of 230 measures 4, figure your alignment is off 1° for every 4 cm. In my case, I was +1 cm on one side and -1 cm on the other. Not even worth bothering with. In fact a slight tweak of the steering wheel made it even without visibly affecting the centering of the wheel.
I will still follow up with a visit to the alignment shop but at least I know its not an emergency.
-Mount a laser level on flat piece of wood. $9.99 at Harbor Freight. http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=41895
-Measure how much standoff there is between the flat mounting surface and the beam emitter. In my case it was 6.3 cm.
-Center your steering wheel and roll back and forth to make sure your tires are settled in to the wheel position.
-Hold the device against a front wheel aimed toward the rear of the vehicle. I used a bungee cord and screw eyes to secure it to the wheel.
-Set up a target that is flush with the rear wheel. A cardboard box will do.
-Activate the laser and direct toward the target.
Measure the distance from the tire surface to the beam and subtract the standoff amount (6.3mm in my case). If you end up with a positive number you have toe-in, negative means toe-out. Since the distance from the beam emitter to the target was 230 cm, and a 1° arc of a circle with a radius of 230 measures 4, figure your alignment is off 1° for every 4 cm. In my case, I was +1 cm on one side and -1 cm on the other. Not even worth bothering with. In fact a slight tweak of the steering wheel made it even without visibly affecting the centering of the wheel.
I will still follow up with a visit to the alignment shop but at least I know its not an emergency.
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