[QUOTE=exnyer;165383]Phil is pretty much on spot with the explination of the bumps.
With the bumps, you run a soft spring, the coil spring just holds the car up while sitting it does nothing on the track, then when you enter the corner, the spring is irrevelant, the shock sits on the bumps and the tires becomes the spring, (increasing tire temps and wear).
Now it does not matter if you run rubber bump stops or flat washers the load gets transfered to the tire, there is a fine line with your load numbers also, shock travel and how far on the bump stop, then if you are traveling to much on the bump stop you have to either put in packers to pick the nose up because you are bottoming out on the track and hitting the crossmember, the footbox or the rack or the car is not turning and you have to take packers out.
There is so much involved in setting up the bumpstops, testing them, getting the wheel load numbers and all of the tinkering at the track the regular saturday night team cannot keep up with it or simply afford everything that is needed to just get bumps on the car, you really need a full time crew to work with it all.
Another expense is the ABC bodies and the templates. Why do we have to fit templates? I can understand making the cars look nice, but if your nose is 1" wide or short, you get a hard time over it, if your roof is 1" high or low you fail tech. How much of an aero advantage are we getting at New Smyrna, Showtime or Auburndale when they decide to drag out the referee and tech the whole body? To me it is simply a waste of time and when some teams hear that the track is doing tech on bodies they just leave the cars on jackstands.[/QUOTE]
Exnyer, you took the words out of my mouth. I have a good friend here in St. Augustine who has run their own Xfinity team, and he offered to help me set up my SLM with bump stops. He explained to me that when they are right, it is real quick, but when they are wrong, they are wrong. When he explained the testing and expense that would be involved, I said no thanks. I don’t understand why any local track or small series would ever consider allowing it. Same goes for the ABC body rules. I don’t care what anyone says, aero isn’t that big a deal on a half mile or shorter. Give some general dimensions for the body, and let’s race. The ABC rule was one of the biggest reasons I sold my super.