911 Torsion bar to coil conversion chart
-
This chart was developed using actual geometric measurements.
-
Note that Kw/Ks is NOT constant, since we used neumerical analysis over
a range from
-
Kw is calculated using the actual load at the wheel center calculated with
+- 1" travel from center.
-
Note nonconstant Kw/Ks
Front
Rates |
|
|
Torsion |
Kw (lb/in) |
Ks (lb/in) |
|
Dia (mm) |
(Wheel) |
(Spring) |
|
16 |
77 |
90 |
|
17 |
97 |
112 |
|
18 |
122 |
138 |
|
18.5 |
137 |
154 |
|
19 |
152 |
170 |
|
20 |
187 |
207 |
|
21 |
227 |
249 |
|
22 |
273 |
298 |
|
23 |
327 |
355 |
|
|
|
|
Rear
Rates |
|
|
Torsion |
Kw (lb/in) |
Ks (lb/in) |
|
Dia (mm) |
(Wheel) |
(Spring) |
|
23 |
107 |
107 |
|
24 |
127 |
127 |
|
25 |
149 |
147 |
|
26 |
174 |
171 |
|
27 |
202 |
198 |
|
28 |
234 |
229 |
|
29 |
269 |
262 |
|
30 |
308 |
300 |
|
31 |
351 |
340 |
|
|
|
|
|
|
|
|
|