Aerodynamic data (Elise MK1) Not confirmed!!!
S1 with carbon bodywork which may not be quite the standard shape so the results may not be the same as you would get on a standard elise.
Mark Waldron's 1 hillclimb Elise.
F
p
V
S
Cd
Clf
Clr
Efficiency
Balance
Force in Newtons (9.807N to 1 kg)
Standard density of air, use 1.225kg/mmm for convenience
Velocity of the airstream in m/s
Frontal area (standard car with roof and standard ride high)
Lift or drag coefficient (German Cw)
Lift coefficient front
Lift coefficient rear
Rule that the higher value is the better choice
Downforce (lift) compare front to rear axle
Elise MK1
Increased chassis rake
Power (PS)
Power (KW)
Frontal area
Cd
Elise MK1
Front splitter
Elise MK1
Gurney on rear wing
120
88,2
1.6m2
0,46
Power (PS)
Power (KW)
Frontal area
Cd
120
88,2
1.6m2
0,473
Power (PS)
Power (KW)
Frontal area
Cd
120
88,2
1.6m2
0,472
Clf
0,001
Clr
-0,058
Ca (Clf+Clr)
-0,057
Efficiency
0,124
Airstream Velocity Front Lift
Rear Lift
Total Lift
(Km/h)
(Rear up)
(Rear up)
(Rear up)
100
0,08
-4,47
-4,40
150
0,17
-10,06
-9,89
200
0,31
-17,89
-17,58
210
0,34
-19,72
-19,38
CLF
0,045
CLR
-0,127
Ca (Clf+Clr)
-0,082
Efficiency
0,173
Airstream Velocity Front Lift Rear Lift Total Lift
(Km/h)
(Gurney) (Gurney) (Gurney)
100
3,47
-9,79
-6,32
150
7,81
-22,03
-14,23
200
13,88
-39,17
-25,29
210
15,30
-43,18
-27,88
CLF
-0,016
CLR
-0,09
Ca (Clf+Clr)
-0,106
Efficiency
0,225
Airstream Velocity Front Lift
Rear Lift
Total Lift
(Km/h)
(Splitter)
(Splitter)
(Splitter)
100
-1,23
-6,94
-8,17
150
-2,78
-15,61
-18,39
200
-4,93
-27,76
-32,69
210
-5,44
-30,60
-36,04
Balance Clf/Ca
1,8%
Balance Clf/Ca
54,9%
Balance Clf/Ca
15,1%
Theo. max speed
190 Km/h
Theo. max speed
187 Km/h
Theo. max speed
185 Km/h
Elise MK1
Standard S1 Soft top
Elise MK1
Standard S1 Roof On + 160 Wing
Power (PS)
Power (KW)
Frontal area
Cd
120
88,2
1.6m2
0,438
CLF
CLR
Ca (Clf+Clr)
Efficiency
Power (PS)
Power (KW)
Frontal area
Cd
120
88,2
1.6m2
0,408
CLF
CLR
Ca (Clf+Clr)
Efficiency
-0,03
0,053
0,023
0,053
-0,03
-0,035
-0,065
0,159
Front Lift
Total Lift
(MK1
Rear Lift (MK1
wing)
(MK1 wing) wing)
-2,31
-2,70
-5,01
-5,20
-6,07
-11,28
-9,25
-10,79
-20,05
-10,20
-11,90
-22,10
Airstream Velocity Front Lift
Rear Lift
Total Lift
(Km/h)
(Soft top)
(Soft top)
(Soft top)
100
-2,31
4,09
1,77
150
-5,20
9,19
3,99
200
-9,25
16,35
7,09
210
-10,20
18,02
7,82
Airstream Velocity
(Km/h)
100
150
200
210
Balance Clf/Ca
130,4%
Balance Clf/Ca
46,2%
Theo. max speed
192 Km/h
Theo. max speed
196 Km/h
Aerodynamic Lift MK1 different configurations
20,00
15,00
10,00
5,00
Lift (Kg)
0,00
-5,00 90
110
130
150
170
190
210
-10,00
-15,00
-20,00
-25,00
-30,00
-35,00
Front Lift (Rear up)
Rear Lift (Rear up)
Front Lift (Gurney)
Rear Lift (Gurney)
Front Lift (Splitter)
Rear Lift (Splitter)
Front Lift (Soft top)
Rear Lift (Soft top)
Front Lift (MK1 wing)
Rear Lift (MK1 wing)
-40,00
-45,00
Speed (Km/h)
Total Lift MK1 different configurations
10,00
5,00
0,00
Lift (Kg)
-5,00
90
110
130
150
-10,00
170
190
210
Total
Total
Total
Total
Total
-15,00
-20,00
-25,00
-30,00
-35,00
-40,00
Speed (Km/h)
Lift (Rear up)
Lift (Gurney)
Lift (Splitter)
Lift (Soft top)
Lift (MK1 wing)