Guide to Baja Suspension

From UR Baja SAE
Revision as of 13:23, 16 December 2014 by Nvanswol (talk | contribs) (Front Specific)
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Rear Specific

The process for determining geometry suggested on pg 618-621 of Racecar Vehicle Dynamics was implemented in Solidworks as follows: 1. Create an adjustable model of Frame with mounting points of Rear Suspension, CV axles, and add in sketches of control arms, shock and cv axles. a. Ensure that limits of shock and CV axle are appropriate. (Limits are approiate if at full compression the bottom of the frame is 4.5” (the max compression of tires in use and at full extension the CV axles can still go down another ½” before hitting their hard limit.) If limit is not appropriate use the following procedure. i. Put ride height at full compression or extension. ii. Set the height of the inner mounting to driven, adjust the length of the shock to its overall length at that travel limit, make the shock driven again and the height driving. iii. Put ride height at opposite limit. iv. If the shock isn’t yet at its travel limit, the shock needs to be closer to vertical and adjust the horizontal mounting accordingly. v. If the shock has gone past its travel limit, it needs to be more horizontal, so adjust the horizontal mounting accordingly. vi. If shock is already horizontal or vertical at either end of travel, then it can not be adjusted any farther 1. If the shock is horizontal, links are too long. 2. If the shock is vertical, links are too short.