.....ohlins or nitrons?

Ok after deciding who to fit now what to fit?Bearing in mind i will mainly be using car for road use will i benefit fdrom having the ohlins fitted as opposed dto the cheaper nitrons?Has anyone got the nitrons on their S2 exige?Are they a significant improvement over standard?

Marc

Its a bit more compex than that
could could go for 1-way , 2-way or 3-way adjsutable dampers
If its mainly for road you could get the Ohlins with softer valving and springs
Would recomend having a chat with Plans as they can supply and fit both brands with a wide range of applications

Why are you changing it if its mainly for road use?

Have you considered trying to get hold of the adjustable set-up from the Exige S?

Ian

Ok after deciding who to fit now what to fit?Bearing in mind i will mainly be using car for road use will i benefit fdrom having the ohlins fitted as opposed dto the cheaper nitrons?Has anyone got the nitrons on their S2 exige?Are they a significant improvement over standard?

Marc

Single adj Nitrons with 525/650 lb springs 99.9% street Lotus setup can’t touch this in the canyons…
Let the springs control the roll and the shocks control the ride…

Seem a little hard those springs for road use

A little

BTW I have the 2-way Ohlins. If you go this route you WILL need to lower the car as Lotus suggests or some grip will be lost as the tyre contact patch with the road is lessened when cornering.

Seem a little hard those springs for road use

Not at all feel free to contact the guys at Sector 111 and ask Shinoo what he thinks about the ride and handeling on the street and canyons…Hell what do I know…

BTW I have the 2-way Ohlins. If you go this route you WILL need to lower the car as Lotus suggests or some grip will be lost as the tyre contact patch with the road is lessened when cornering.

How does that work then?

BTW I have the 2-way Ohlins. If you go this route you WILL need to lower the car as Lotus suggests or some grip will be lost as the tyre contact patch with the road is lessened when cornering.

How does that work then?

Oh you’ve started something now! Steve’s not one to rest until he gets a good answer.

Just an enquiring mind and keen to learn …but I have to say that on initial reading it didn’t sound right

Just an enquiring mind and keen to learn …but I have to say that on initial reading it didn’t sound right

I must admit i was also wondering how a different damper can change the tyres contact patch

If the ride height is the same the geo will be the same, you will need to reset the goe if it is lower or higher than before.
Doesn�t matter if you use Ohlins or bed springs

Are Ohlins a bit over kill for the road with the odd track day ???
Just thinking of upgrading.

[edit] On second reading I think what was didn’t also say was that the Ohlins come with new springs also, much stiffer [/edit] Sorry Steve, you can rest now
If I undestood what was going on I could tell ya
All I know is that a bullitin came out from Lotus recommending the lowering. I was not impressed with cornering at the track once the Ohlins were installed (at stock ride height). I was checking tyre temps and the inside of the fronts were cooler indicating I need more camber. As the rubber starts to get hot and move (what would you call that?) when the car is performing well, it was only happening on the outer half of the fronts. Anyway now they are consistent across the tyre. Comparing my laps with good consistent race cars that were faster than I was before are now slower than I am. I don’t have my DL1 installed yet so I can’t give lap time comparisons but the car feels much faster.
My thoughts on the lowering were this: If the springs are much stiffer then the car will roll much less in turns. As the camber obviously changes with unven wishbones and also considering the car is no longer level when it rolls. I think I am right in saying that as the Exige is lowered more positive camber is applied to the front and more negative to the rear. The car geo set-up is then corrected and now the camber changes are different then when the car sat a little higher. Well FWIW thats my theory. If anyone can explain to me why the front camber goes more positive with load, I would really like to understand it. I have been trying to check my geometry in my own garage but I can’t get the same values that the professionals do

I have a good book on suspension…if I get a moment I’ll look up your query and see if there’s anything there that could help explain it…

Steve if you have the ISBN or title I’d be interested in getting the book, I’d like to know more myself. Now I have these 2 ways it would be nice to figure out my own adjustment rather than just taking recommended values from Lotus. Through a lot of experience and driving with comparable cars I am a capable driver but I am clueless about suspension adjustments. Actually I’d like to dial in a little more mid corner oversteer…

Steve if you have the ISBN or title I’d be interested in getting the book, I’d like to know more myself.

ISBN 0-912656-46-8
How To Make Your Car Handle
by Fred Puhn
HP Books

Its quite an old book but covers all the basics.

Just stiffen up your rear shocks a bit…bad move…