25

Mar

Course Design Tips & Tools

Posted by bky  Published in Helpful

zephyrs_banner.jpg
We’re always looking for new ideas in course design. If you have ideas, these links will help you get started.


Roger Johnson’s Solo Course Design Guide: the definitive reference on course design and safety.


Blank Course Map for Zephyrs Stadium


Blank Course Map for Zephyrs Stadium, both lots (big sheet)


Blank Course Map for Belle Chasse NAS


Blank Course Map for EVOC, Zachary Louisiana (Cenla)


The 2008 SCCA Solo Rule book covers course design and safety parameters.

Curve Radius vs MPH Spreadsheet: I made this so I could estimate cornering speeds based on curve radius. Microsoft Excel required.







Turn Radius (feet)
Lateral Acceleration in G
Time (seconds) for one revolution
Distance (feet) for one revolution
Feet per Second
Miles per Hour
Time to travel 45* arc
Time to travel 90* arc
Time to travel 180* arc
Time to travel 270* arc
10
1.00
3.5
62.8
17.9
12.2
0.4
0.9
1.8
2.6
20
1.00
5.0
125.7
25.4
17.3
0.6
1.2
2.5
3.7
30
1.00
6.1
188.5
31.1
21.2
0.8
1.5
3.0
4.6
40
1.00
7.0
251.3
35.9
24.5
0.9
1.8
3.5
5.3
50
1.00
7.8
314.2
40.1
27.3
1.0
2.0
3.9
5.9
60
1.00
8.6
377.0
43.9
30.0
1.1
2.1
4.3
6.4
70
1.00
9.3
439.8
47.5
32.4
1.2
2.3
4.6
7.0
80
1.00
9.9
502.7
50.7
34.6
1.2
2.5
5.0
7.4
90
1.00
10.5
565.5
53.8
36.7
1.3
2.6
5.3
7.9
100
1.00
11.1
628.3
56.7
38.7
1.4
2.8
5.5
8.3
110
1.00
11.6
691.1
59.5
40.6
1.5
2.9
5.8
8.7
120
1.00
12.1
754.0
62.1
42.4
1.5
3.0
6.1
9.1
130
1.00
12.6
816.8
64.7
44.1
1.6
3.2
6.3
9.5
140
1.00
13.1
879.6
67.1
45.8
1.6
3.3
6.6
9.8
150
1.00
13.6
942.5
69.5
47.4
1.7
3.4
6.8
10.2
160
1.00
14.0
1005.3
71.7
48.9
1.8
3.5
7.0
10.5
170
1.00
14.4
1068.1
74.0
50.4
1.8
3.6
7.2
10.8
180
1.00
14.9
1131.0
76.1
51.9
1.9
3.7
7.4
11.1
190
1.00
15.3
1193.8
78.2
53.3
1.9
3.8
7.6
11.5
200
1.00
15.7
1256.6
80.2
54.7
2.0
3.9
7.8
11.7

I’ve found that working in Diameter is a bit more useful on-screen, since I don’t have to divide by two to find the radius. I also think it helps in the field, since you can pace out where the car is from point to point, provided that you are cutting 180* in the turn. Radius is a little tougher to visualize.


Turn Diameter (feet)
 Speed in MPH at 0.80 G
 Speed in MPH at 0.90 G
 Speed in MPH at 1.00 G
 Speed in MPH at 1.10 G
 Speed in MPH at 1.20 G
 Speed in MPH at 1.30 G
10
7.7
8.2
8.6
9.1
9.5
9.9
15
9.5
10.0
10.6
11.1
11.6
12.1
20
10.9
11.6
12.2
12.8
13.4
13.9
25
12.2
13.0
13.7
14.3
15.0
15.6
30
13.4
14.2
15.0
15.7
16.4
17.1
35
14.5
15.3
16.2
17.0
17.7
18.4
40
15.5
16.4
17.3
18.1
18.9
19.7
45
16.4
17.4
18.3
19.2
20.1
20.9
50
17.3
18.3
19.3
20.3
21.2
22.0
55
18.1
19.2
20.3
21.3
22.2
23.1
60
18.9
20.1
21.2
22.2
23.2
24.2
65
19.7
20.9
22.0
23.1
24.2
25.1
70
20.5
21.7
22.9
24.0
25.1
26.1
75
21.2
22.5
23.7
24.8
25.9
27.0
80
21.9
23.2
24.5
25.7
26.8
27.9
85
22.6
23.9
25.2
26.4
27.6
28.7
90
23.2
24.6
25.9
27.2
28.4
29.6
95
23.8
25.3
26.7
28.0
29.2
30.4
100
24.5
25.9
27.3
28.7
30.0
31.2
105
25.1
26.6
28.0
29.4
30.7
32.0
110
25.7
27.2
28.7
30.1
31.4
32.7
115
26.2
27.8
29.3
30.8
32.1
33.4
120
26.8
28.4
30.0
31.4
32.8
34.2
125
27.3
29.0
30.6
32.1
33.5
34.9
130
27.9
29.6
31.2
32.7
34.2
35.6
135
28.4
30.1
31.8
33.3
34.8
36.2
140
28.9
30.7
32.4
33.9
35.4
36.9
145
29.5
31.2
32.9
34.5
36.1
37.5
150
30.0
31.8
33.5
35.1
36.7
38.2
155
30.5
32.3
34.0
35.7
37.3
38.8
160
30.9
32.8
34.6
36.3
37.9
39.4
165
31.4
33.3
35.1
36.8
38.5
40.1
170
31.9
33.8
35.7
37.4
39.1
40.7
175
32.4
34.3
36.2
37.9
39.6
41.2
180
32.8
34.8
36.7
38.5
40.2
41.8
185
33.3
35.3
37.2
39.0
40.7
42.4
190
33.7
35.8
37.7
39.5
41.3
43.0
195
34.2
36.2
38.2
40.1
41.8
43.5
200
34.6
36.7
38.7
40.6
42.4
44.1

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