University student here, look at suspension load paths, I made an excel sheet that calculates the loads on the different suspension members when a load is applied. When I input a load acting on the tyre patch though, I get a really weird result where for example my Pushrod is in tension when in theory it should in in compression (for Fz +ve for example). Not sure if this is due to my unit vectors done the wrong way round. Could someone check and make sure I'm not going crazy, as I am pretty sure after checking it multiple times that I've done it right.
I attached the excels sheet. Matrix A contains the x y z unit vectors for the force and moments respectively. Vector B contains the Force/Moments applied at tyre contact patch.
Any help/explanation would be appreciated :)