zimluura Wrote:ok, so i think i see how hinge works. it's L/R coord's sign is a reverse of what the associated wheel has because the actual single conceptual hinge-point is so far behind its wheel that it's literally outside of the car on the other side.

with that in mind my plan is to make a pass at the hinges of all the cars i've done thus far, and set them as such. and then resume work on teh other cars.

Quote:also, i happen to notice on my own usdm tc6's rear suspension that: as the springs compress it's wheel moves noticeably toward the rear of the car. with only 2 points involved in the suspension, i'm guessing this isn't modeled in the physics yet. is that correct? or is the 3rd point derived from the wheel position?

Quote:edit, i'm noticing some strange things with some of these hinges. lots of hinges have an L/R position at 0. tc (& tc6 which i copied suspension) seem to have had their hinges originally right next to its own wheel. so virtually no suspension travel. in these cases should i try to tune each car so that the hinge is somewhere near/past the opposite side's wheel? a change like that will need to be tested a bit for each car () and might require extra changes to be made to the spring tension.

or should i just try to get the coords and signs swapped to just update each one?

Quote:Instant center

A tire's force vector points from the contact patch of the tire through a point referred to as the "instant center". This imaginary point is the effective geometric point at which the suspension force vectors are transmitted to the chassis. Another way of looking at this is to imagine each suspension control arm mounted only at the frame. The axis that the arm rotates around creates an imaginary line running through the vehicle. Forces, as far as suspension geomentry are concerned, are transmitted either along this axis (usually front to rear) or through this axis at a right angle (usually right to left and intersects the ball joint). When you intersect the force lines of the upper and lower control arms, where they cross is the Instant Center. The Instant Centers when viewed from the front or side may not seem to have much of a relation to each other until you imagine the points in three dimensions. Sometimes the Instant Center is at ground level or at a distant point due to parallel control arms.

The instant center can also be thought of as having the effect of converting multilink suspension into a single control arm which pivots at the Instant Center. This is only true at a given suspension deflection, because an unequal length, multi-link system has an instant center that moves as the suspension is deflected.

zimluura Wrote:checking how to disable C++ exceptions... -fno-exceptions
./configure: line 21217: syntax error near unexpected token `_AC_SRCDIRS(".")'
./configure: line 21217: ` _AC_SRCDIRS(".")'