Editing Geo Alignment Rig (Home Made) (section)

== Measuring Toe == 

1. Homebase for two bits of 2400mm rigid aluminum (16mm ally channel as they don’t to tubes, but I’ll call them “poles” for now) and 10m of nylon cord or fishing line.

2. The rear track of the S2 Elise is 1700mm and to allow for bodywork and working space cut the poles to 2000mm, mark the centre and drill a 4mm hole 900mm each side from the centre on each pole.

3. Find the centre of the car measure from the wheel track and mark up (front towing post is near-ish.) with tape for coarse alignment.

4. Tape the poles to the front and back of the car aligning centre marks (spirit level to avoid droopidge).

5. Run string through the holes; big knot in one end and tie off the other, make sure it passes near the wheel centers.

6. Measure from the centre of each wheel and adjust the string until its parallel side to side for fine alignment. That is the same distance from the wheel centre to the string on each side of an axle.

7. Use a ruler to measure mm distance from front and rear of rim to string and subtract rear from front for the TOE_IN_MM (minus value is toe OUT, positive value is toe IN).

8. If your want toe in degrees then convert using Excel =DEGREES( ASIN( TOE_IN_MM / ( RIM_DIA_INCHES * 25.4 )))

9. Online Calculator and setup Sheet on Google Docs, save to your machine to edit https://goo.gl/f6tJ8l