Miura suspension upgrade
One of the the complaints from
drivers using their Miura for hi speed, hi G corners is toe-in/toe-out
rear suspension flex. And even a hard braking turn can bring this on.
Typically it is because the owner is not maintaining the rear
suspension components - bushings, spacers, shims, ball joints,
bearings. But there is a design improvement in the addition of a strut
to "triangulate" the rear lower A arm that Bob Wallace pioneered and
passed on to many owners and shops.
right side link shown above
The strut or link and its
attachment has come under some scrutiny over the past 40 years and has
lead to many different versions of this same modification. It is a
point that could be discussed at length. You might have your own ideas.
1) eliminate "slot" in bracket as this could be a weak point to hold tightly.
2) no slot means an adjustable length strut needs to be fitted to allow for suspension alignment adjustments.
3) attachment points on either A arm or link at either end of strut
could be of varied designs - stud, bracket, double bracket, clevis
4) Maybe strut could have spherical bearings (Heim joints) at each end.
5) Would spherical bearings introduce new areas of flex or allow twist or bending?
6) If the new strut length is varied thru left/right turnbuckle arrangement, what design is best? does size matter?
7) Maybe new strut should be a left/right clevis that simply thru bolts at either end?