roncruiser said:Is the copper pipe used as a template? Meaning to mark how the old bushing are mounted? Thus using the copper pipe to aid in mounting the new busings the same way the old ones were mounted in?
presumably, the jig would enable you to make sure that the *distance* between bushing centers is correct, since this is fixed by the axle brackets (IOW if it's off you won't be able to bolt things down). The *orientation* of the bushings would depend on the caster correction wanted, presumably maximum so up and down eccentricity.
This jig is a very elegant and clever touch.