Anybody know or have any information I can use to figure out the angle at which the front axle should be and the angle the wheels hit the ground? I have seen an engineer do this before in somewebsite but cant fit anymore.
It sounds like you are describing camber. The front end of that HPI Baja pic you posted has adjustable camber, so the angle will depend on how it's adjusted. There is no 'supposed to be', only what setting works best for which terrain.
So lets say I want want the angle of the tire to be perpendicular to the ground how do I go about figuring that out
Also be aware that camber angle (depending on set up) can change throughout the range of the suspension travel.
Toe (in or out) can also be affected.
Engineers spend their lives working on this. You can buy books on suspension design. If you live in a big city or have access to the library at a university with engineering, you may be able check some out.
Yeah I know that I worked with engineers some of them spend years in school had difficult with things like this. I have many ebooks in Mechanical engineering I was looking for a rule of thumb in general
The angle of the tire may change as the suspension cycles. At what point in the travel do you want the tire perpendicular to the ground?
I guess thats the important question is how much deviation should the suspension allow for the tire. I have no clue how to calculate this I guess in resting position tire will be perpendicular to ground.
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