Battle Magazine — March 1997

scientific calculator

K

1. Level the measuring tool

1

1

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1

I

1

Tire

tire

Axle

1

1

tire

1

1

1

1

1

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K

1

Toe is determined by the difference between points A and B.

Use the four end bolts to set the tool level.

Next, level the measuring tool. First set the laser-equipped tool level to the ground. Then check that the laser itself is horizontal. On a flat surface at least 3 m long, place the laser and target tube facing each other nearby. Turn on the laser and mark the red point on the tube with a marker.

Set the tube farther away than the wheelbase and correct any point shift to improve accuracy.

On level ground, place the laser and tube facing each other at close range and mark the laser point.

They must be at the same height.

toe

Calculate the angle.

Now calculate the rear toe angle relative to the front. See Diagram 1 and the formula. Let A be the wheelbase and B the measured offset of the laser point. Calculate B ÷ A = tan θ.

tire

laser

2

The laser can project a point a long distance.

A: wheelbase

B

Front track

C: measurement from center

B

A

Toe angle (this is toe-in)

A

tire

Compare the calculated C value with a trigonometric table to find the toe angle.

Keep the front wheels straight and the tube perpendicular to the wheel face.

This indicates toe-out.

Figure 1