Four Link Suspension, how does it work?

71Demon528 said
Just as important as the 4 link setup is the shocks the car has, AND the coil over springs. Too stiff of a spring is no good because it won’t allow the 4 link to do what it’s designed to do. Too soft of a spring will cause grief as well because there will be too much stored energy in the springs. My bet Les, after you get video of the car, along with some working knowledge of the suspension, you will want to make changes to try and make it work more efficiently. Or you may be happy with the way it works and just leave it.

I've used some of the resources that have been suggested here and I feel I now have a reasonable working knowledge of how the four link works and what adjustments do. The suspension in the Arrow doesn't have a lot of travel and is pretty stiff. Perhaps it's the nature of the beast given it's a full Alston chassis originally built in 1987. It has the Mustang II front suspension set up and the front shocks are pretty short and they are single adjustable. The rears are a bit longer and are double adjustable. I haven't touched the rears as the previous owner told me there was no need to change them. The best 60' time I've had with this car is a 1.27. Right now it's in the 1.32/33 range. Not a huge difference but it just feels 'soft' on the hit when the transbrake releases. Hopefully I can get some videos this Sunday and be able to see what it's actually doing. The videos I have are not very useful as they were taken from the stands so you can't see a lot of detail.