the racer whose car appears in that article was, I believe, the first, or at least earlier than Sammy. Sammy actually raced against Bill and talked with Bill at length about the design, being very interested and intrigued. It sounds like Sammy tried the design himself.
I found the May '89 issue of Open Wheel for sale on eBay and purchased it. I just got it and noticed that Sammy's was more of an equal-length upper and lower arm design with inboard coilover springs with pushrods going into rockers of a sort. If it had been a success, we would've seen more of this design. Looking at it in OW, it looks fairly fragile for serious Sprint Car racing.
Keep in mind, my interest is not that I think designs like these are the Holy Grail or that they are more or less competitive, it's the fact that there are those like Bill and Sammy who look outside the box and are not afraid to experiment even with a radically different design. I celebrate the diversity of thought that exists in racing. It's one of the things that makes racing so attractive to me as a mechanical engineer.
Speedweeks is upon us here in the Daytona area where I live and I just might have a talk with Sammy while he's here for the Sprint Car races at Volusia. I bet he could give me some interesting insight into that car and what he discovered about it. We do know it didn't last.
How To Find the Front Moment Center
How do I find front moment centers on a Dirt Late Model race car?
Buy a software program, measure the car, and enter the data, short and sweet.
Don't draw it out on a piece of paper. The MC we need to know the location of is the dynamic location, or where it moves to in the turns, and that would be very difficult to draw. That's where it will influence the stiffness of the front suspension. Too far left and the car is very soft, and too far right and the car is very stiff. It's like the story of Momma, Poppa, and Baby bear; not too hot, not too cold.
The MC location that works best for a Dirt Late Model falls in a range from centerline to 6 inches left of centerline after the car dives and rolls. This is where most car manufacturers have determined it should be. This measuring process takes a little time, but is one of the most important processes you will undertake with setting up your car. If the MC location ain't right, nothing seems to work for setup. Trust me, the top teams know this all too well.