Isaac is right but I think you are looking for a different number... since the lugs on that pattern are 60* apart it's Tan (60) = x / 2.25
x = 3.897
Edit: Nevermind, you two confused me. Don't look at these numbers.
Last edited by rover67; 03-19-2010 at 10:44 PM.
Reason: edit: nevemind, I'm an idiot.