Lotus Elan and Lotus Elan Plus 2 Forums

rgh0 wrote:Assuming these bump stops are similar spring rate when cut to the original Aeon rubber springs then I personally would cut them to be about 20 mm longer than the original rubber springs so they come into play a little earlier in a corner

I presume you mean you have ordered 125 lb/in rear springs not 125 lbft?. At 125 lb/in these are certainly stiff for normal road use and are at the very hard end for road use or the soft end for racing use.

If you do have these stiff rear springs then you also need to upgrade your front springs to match the stiffer rears - maybe 150 to 180 lb/in fronts and a bigger diameter roll bar around 7/8 inch / 22 mm.

This total combination will give you great balanced handling that works well with modern sticky tyres ( and will keep you up with a modern Elise in most corners) but you will loose much of the original supple ride and you will want smooth roads to drive on.

cheers
Rohan

rgh0 wrote:

rgh0 wrote:
If you do have these stiff rear springs then you also need to upgrade your front springs to match the stiffer rears - maybe 150 to 180 lb/in fronts and a bigger diameter roll bar around 7/8 inch / 22 mm.

As I said in the above post that if going with 125 lb/in rears I would also do the other mods above to get balance handling.

cheers
Rohan