Slalom4me

What is the method for converting fractions to degrees.

When talking about toe-in, I request my desired specs in
16ths or 32nds and ask for a print-out of before & after
values. However, modern equipment measures and records
in degrees.

Also, what is the Thrust Angle given for the rear settings
- another way of describing camber?

Thanks,

ghoffman

1/4 inch toe on a 27 inch tire is .53 degrees, scale it up or down from there.

Slalom4me

I searched with google and have answered
the Thrust Angle question. The following link had a
straight forward explanation.

Thanks for turning on the lights. Even better
than scaling up / down, here is an excuse to
recall a little dusty trig and do the math myself.

Regards,
Ken R.

davidfarmer

should have paid attention in Trig class. I use this stuff everyday.

Sin/Cos conversion aren't linear, so you can only scale the above numbers within a small range. You would be better to actually calculate based on real number.

sin (angle)=oposite/hypotenuse (toe/diameter)

or angle=arcsin(toe/diameter)

Remember, you usually measure total toe. You need to cut that in half before converting to wheel angle.

**one last thing. make sure your calculator is in "degree" mode. If it only does radian, then 2pie radians=360deg

ghoffman

Just draw a triangle on any CAD program and dimension it.

yellow01

David,

It would have to be radius, not diameter no? When changing toe you are rotating the wheel about it's central axis (mount point) so the triangle should be center of wheel to front edge of wheel...

I could be picturing it wrong though.