Suspension member forces

[JBram]

Can I get an approximate value of what forces you guys have in suspension members (pullrod, upper and lower a-arm, tie rods), to check if mine all reasonable? Only numbers from pullrod systems, please.

Thanks for your help.

[Denny Trimble]

We see sustained lateral g's of 1.5 and peaks of 1.72, filtered, in braking and cornering. If you know this, you can calculate your suspension member forces by working from the tire contact patch up. The forces will vary greatly depending on your geometry.

University of Washington Formula SAE ('98, '99, '03, '04)

[Frank]

500Nm of cornering on the upright
100Nm of steering on the upright
241Nm of braking on the front upright

fluctuations (fatigue) generally +/- 30% of static load

frank

[Frank]

sorry, a bit off the braking figure

more like 275-300 Nm

most suspension members in the order of

1000-2000N average force

frank