Small Jag RSWhy is the rear suspension in a subframe?
Using a subframe is unique to E.R.A. The subframe isolates the differential noise and vibration from the chassis. It also lets us use trailing arms to locate the lower control arms as originally designed. Without trailing arms, the lower control arms are put into bending modes that they were never designed for, allowing excessive toe change with power and braking forces. Contemporary Classics’ (Now Burtis Motorcars) replica has an optional Watts link system that partially compensates for this – for about $1500! Our subframe also makes it easier to service the assembly. The rear suspension can be built as a unit outside the car for convenience, and installed into the chassis in less than an hour.
