But where you going to get a Volvo 360? Rare as (never sold in USA, long gone in AUS), while you can buy new Flex-Forms for $425

I too would very much like to hear Simon's comments once he has had a chance to fit them and test the car.
The one thing that would really concern me with running these is the side loading forces compared to the strength of steel. With those aluminium eyes just being held in by 2 bolts each end how would they handle the forces being generated by a race car during hard cornering? Would those bolts wear away inside the fibreglass holes and eventually let go?
I guess if the rear is held in place by a Panhard bar or Watts linkage that would help.
Thoughts?
Cheers
Dave

I haven't checked IPRA rules in several years, but it always used to be the springs had to be of the same material as OEM??

They are fine re the IPRA rules. Must be the same type of spring(ie, coil or leaf) and the same location as original.
The car has a watts link, I'll soon find out if I need to run anti tramp bars.

cool. I always thought it was type, location and material... memory must be going in my old age!

I would think running anti- tramp bars is advisable for longevity. Yes I'm keen to know how they go, as i said to Simon they are rated 180-200lbs/inch by flexform. Shame I didn't get them on my car.

Man those are stiff, but they need to be to match 200 lbs/in front springs. Everyone says they will still be smoother than a multi-leaf pack of the same stiffness

Simon as far as I know you will be the first to actually run them on a 1200!

Ogyris, do you happen to have the dimensions needed to order these from the website? Unless I am missing something there and there is a direct order form for 1200s lol. Thanks!

Dimensions are same for Coupe & Sedan. You should measure your springs to confirm the dimensions listed below. Only "C" is affected by age

Order Form for Flex-Form



1200 Sedan/Coupe
A-dimension overall = 1110mm
B-dimension center pin = 19-5/8"?
C-dimension arch height = 2"?
D-dimension chord = 44 3/4"
E-dimension bolt diameter = 11mm? OR front=5/16", back=25/64"
F-dimension width = 50mm
Car weight = 1640 pounds
Axle Percent Rate: 54/46

Spring Rate is custom order, you decide. For comparison:
* Sedan,Coupe (stock): 109 lb/in
* Nissan Competition: 114 lb/in
Flex-form reportedly feels stiffer than same rate in a leaf pack
NOTE: Leaf spring rate doesn't change with age, instead it sags (camber is reduced)

Flexform just have a generic 'fill in the data' sheet as above. It is a bit of an experiment when producing springs for the first time on a vehicle.
Also depending on the company some fibre glass products would be better quality. Hyperco composite springs in the US look very good but only make springs for Chrysler and Chevrolet.