USAC Rule Update 1/24
 

Where and why are we sticking a fifth shock on?

https://www.usacracing.com/news/usac...ational-season

Re: USAC Rule Update 1/24
 

Silver Crown only:

207: STEERING & SUSPENSION | USAC SILVER CROWN NATIONAL CHAMPIONSHIP

H. Cars are limited to five (5) shocks. No electronic shocks allowed. If a second shock is used on any corner of the car, the second shock cannot be a through-rod shock or have a cannister attached.

I. No electronic weight, shock, sway bar or any suspension item adjuster. Only five total cockpit chassis adjustments are allowed at any one time. Brake bias will not count toward the five adjustments.

Sounds like we need a chassis specialist to weigh in here, but I am guessing it has to deal with the right side loading on tracks like Winchester & Salem?

The floor and microphone is open to anyone who wants it. :)

Nope scroll down, it's in the Sprint Car and Midget rules as well.

That was my first thought too, that it was a pavement thing.

Rules? We don’t need no stinking rules!
Unless you’re going to enforce them.
As you all know I love USAC, but they are not without their warts. I didn’t dissect it, but it appears you can bolt weight anywhere now, including in front of the axle provided it’s labeled to your car. That’s an easy way to bury a past controversy. If I’m wrong, please correct me. Thanks

Re: USAC Rule Update 1/24
 

F. Additional bolt-on weight must be mounted and fastened to the frame and/or chassis in a secure manner. Weight must be
identified with a car number and any bolt on weight lost on the racetrack is subject to a fine.
G. Weight must be mounted in an area between the bottom frame rails, front and rear axles, and no higher than mid-rails at
the cockpit. All weight must be mounted within the confines of the frame. No weight may be added during a yellow or red
flag.

Re: USAC Rule Update 1/24
 

Yeah. You're right. Hmmmm...

KKM started using a 2nd shock late last year on the RR and now it’s monkey see monkey do. Here was a chance to nip it in the bud and prevent the additional cost of the 5th shock. And don’t get me started on the irony of lightening the cars over the years, only to now want to bolt weight on.

Re: USAC Rule Update 1/24
 

If you can save weight someplace on the car and shift it to a place more advantageous teams are going to do it.

I noticed a few of the Kkm cars had the 5 shock setup but not all of them. They were running a much smaller dimensionally rr torsion arm on the cars with the setup compared to cars that had standard shock layout. My brothers tq team has to bolt quite a bit weight to his car to make weight.

Re: USAC Rule Update 1/24
 

Good eye. :6: