On 11 Oct 2007 at 6:31, Bob Berger wrote: > Do the degree numbers relate to/match the inches? > How do I convert Degrees of toe-in/out to Inches?
Someone can correct me if I'm wrong, but as I understand it: Toe-in is usually given in distance, not angle. The distance is the difference between the track measured at the front of the rim and the track measured at the back of the rim. So the relationship to angle is that toe-in = 2 * wheel diameter * sin(angle). The factor of 2 is because measuring the track wheel to wheel gives the sum of the two wheels, whereas if you measured it from the car's centerline it would be just one wheel. A curious thing is that if you had one wheel toed in and one toed out, you could still end up with a correct distance value. Of course, at the front the wheels do turn together but at the back they aren't supposed to. Measuring w.r.t. the centerline would seem to be necessary for the rear. And of course, at the front toe-in changes with steering angle so you need to have the wheels point forward, more or less. I confess I'm unsure of that factor of 2. I'm sure of the calculation, just not sure whether quoted toe-in values take it account or are meant to be interpreted as for just one wheel. -- Jim Muller [EMAIL PROTECTED] '80 Spitfire, '70 GT6+ -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.488 / Virus Database: 269.14.7/1062 - Release Date: 10/10/2007 5:11 PM _______________________________________________ [EMAIL PROTECTED] [email protected] http://autox.team.net/mailman/listinfo/spitfires
