ceter of greavity for Elise S1/S2 Exige S2

ceter of greavity for Elise S1/S2 Exige S2

Author
Discussion

LittleGizzmo

Original Poster:

3 posts

166 months

Wednesday 26th January 2011
quotequote all
Hi, I´m a Elise Mk2 driver from Germany.

For some calculations I need the high of CoG....
Did anyone have this values?

If possible from Elise S1/S2 and Exige S2.

Thankx.

thegreenhell

17,215 posts

226 months

Thursday 27th January 2011
quotequote all
Hi Tobias,

If nobody else is able to provide an answer then I will try to calculate the CoG height of my S1 this weekend. The car is having a session on the corner scales on Saturday, so I can get the readings to calculate the CoG using the method described here:

http://www.longacreracing.com/articles/art.asp?ART...


LittleGizzmo

Original Poster:

3 posts

166 months

Thursday 27th January 2011
quotequote all
Hi,

this will be great!
Please remark also the amount of fuel, the ride high and differences to the standard Elise...

Thank you!

thegreenhell

17,215 posts

226 months

Monday 31st January 2011
quotequote all
Ok...

Late model S1 with the integral boot and heavier GRP lid, steel rear uprights, no roof, no radio, lightweight exhaust, approx 5 litres of fuel, and 125f/135r mm ride heights.

total weight: 719kg
front/rear: 295/424 kg - 41/59%

We raised the rear of the car 220mm (the height of some wooden blocks we had lying around) and registered 8kg of forward weight transfer. Using the Longacre method resulted in the following CoG position, although if you play around with it you will see this formula is very sensitive to the weight change value. As our scales only weighed to the nearest 0.5kg, the resulting CoG height could easily be plus/minus 50mm from that indicated due to the rounding of the measurements.


LittleGizzmo

Original Poster:

3 posts

166 months

Monday 31st January 2011
quotequote all
Thank You!

This is fantastic.

Best regards,

Tobias