Lotus Damper Program - Spring Rates?

[karmavore]

Does anyone know the springs rates and lengths Lotus is using for the 4-bangers as part of their Damper Program?

[alan]

Sorry, but was never given any numbers. My car was used as part of the development and I do know that different models (SE, S4s, GT3, V8 etc) were all tuned with different spring and damper ratings.

[karmavore]

Well.... the springs are different for the 4 bangers, but the dampers are the same, right?

Anyway, thanks for replying.

Anyone else know?

[Bibs]

It's confidential, Lotus spent a lot of money on that program and won't release the info understandably. I have asked!

[rogerch]

Not sure this link will work, but give it a try

Spring rate

Or try a search "spring rate" and you should bring it up, not the full answer, but a good start.

[karmavore]

It's confidential, Lotus spent a lot of money on that program and won't release the info understandably. I have asked!

It can be measured quite easily, I think. Perhaps if I get them I'll bother to do it. ....but, yeah, thanks for dashing my hopes, Bibs.

Not sure this link will work, but give it a try

Spring rate

Or try a search "spring rate" and you should bring it up, not the full answer, but a good start.

Thanks MY post you're referring to.

[sailorbob]

Eibach springs usually have the length, diameter and rate written on them. Either as mm, mm, kg/mm if SI or inch, inch, lb/inch if imperial.

Edit: They may be N/mm not kg/mm (been a while since I last used Eibach)

Edited September 29, 2010 by sailorbob

[karmavore]

Good point, Sailor.

[Vulcan Grey]

Lucas,

Don't you have the GAZ double adjustables?

Are they not working out?

[karmavore]

They were great in Atlanta, but since I've moved the car up north I'm finding them way too harsh on these awful roads so I'm thinking about changing the springs out.

The car is actually at a shop now and they are supposed to do some tuning for me. We'll see how that goes.

[rogerch]

If you have double adjustables, what do have the "Bump" settings on?

For road use these should be minimal so if they're not at zero try winding them off and judge the result.

You've obviously spent good money on good gear, so it would be a pity to throw it away if you can find the right settings with what you have.