Miatav8,MstrASE,A&P,F wrote:
I was misreading the results so I deleted the pic.
Ideally, when the car is cornering and rolls, the outside wheel stays at near zero camber.
That is easily accomplished (
default values ), but the swing arm length at ride height is very short; about half the track.
This causes problems with one wheel bumps having excessive camber gain, straight ahead braking with a reduced contact patch due to dive and camber gain, high roll center, and jacking forces.
Aim for 0.6-0.7 camber gain per degree of roll, a roll center that does not move vertically and stays below 4 inches, and a swingarm length over 60" at ride height. The swingarm length changes with bump and should never get below 30 inches due to the reasons mentioned above.
Use control arms where the uca is around .625 x the lca length and the arms are as long as possible.
Thanks for guidelines. I'm curious what about my original link is no good? And please don't hold back, like I said, I'm a visual learner so, unfortunatly I have to see what I'm doing wrong hahaha.
With the original link the actual design of the control arm is parallel with the ground when built but, the pivot is at a bit of an angle.
Attachment:
Capture.PNG
And with the first link it's got:
1 deg of left roll (right turn) = -.67 camber inside wheel .64 outside
2 deg or left roll (right turn) = -1.35 camber inside wheel +1.18 outside.
The roll center stays at 2.05in through 2 degrees and only moves to 2.13in after 4 degrees of roll.
If I run 1 degree of front camber at 2 degrees left roll the outside wheel is near 0 degrees camber and the inside is -2.35. Is that too much? It thought I recalled reading in a book 3degress inside is about as far as you want to go in roll but, I could definitely be recalling the details incorrectly.
Swingarm length at ride height is ~80in and after 2 in of bump reduces to 57.8in and extends to 129.7in in 2in droop.
The only major difference is the UCA to LCA ratio of about .722 vs .625.
There is literally almost unlimited design constraints for the front mounting points though, anything can be changed at this point, it's not really a middy with the intentions of "looking like a 7" at this point. It's just a middy chassis because of the powerplant I want to use, I'll worry about looks after I get function down haha.