Roll Cage Design Plus Ofcourse The
Roll Cage Design Series Wants It

I did work for a team in NASCAR that tig welded their chassis, but it was one guy, full time, for a small team that only needed a few chassis a year.

Now there are two full tubes, generously spaced, across the leading edge of the cage in front of the drivers forehead.

Also, with the top six or so inches of the windshield blacked out, the new double halo bar will not be visible from outside the car.

Its still mild steel seamless DOM tubing, 1.75-inch diameter,.090-in.

MIG welded into a very familiar looking assembly.

But over the past dozen years, nearly every detail has been agonized, sweated over, and optimized to produce the safest possible structure.

It allows for clearance of the right side roof flap which is at about a 30 degree angle to the centerline of the chassis.

The left roof flap is at a 90 degree angle to the centerline and sets back just behind that same bar behind the drivers head.

Good eye.

I wondered whether there might be an aero or packaging reason for it if it is real.

Roll Cage Design Plus Ofcourse The

Eg the main hoop must go from left to right plus ofcourse the lack of space for a passenger, even if no passengers are carried I do think though it is just a little over the top and decidedly heavy.

The door bars on the V8 Supercar wouldnt work in a 200 mph environment.

And after that major fire they had on a start this year Dont get me started on the lunacy of a standing start.

Strengthen the rear end of the cars, or dont put them in the position where that is a risk that at every race.

Roll Cage Design Series Wants It

Its just what the rules-makers for that series wants it to be.

Are NASCAR chassis really made with mild steel and mig welded I am a drag racer, All of our cars we have worked on are chromemoly and tig welded.

I have worked on drag cars ranging from top alcohol funny cars and dragsters clear down to Jr dragsters.

Also why wouldnt they tig weld the mild steel Just curious.

Marty.

Theres nothing wrong with TIG welding mild steel except its far slower.

Smaller, finer components generally are TIG welded in NASCAR.

How many times do they actually run a chassis It seems that teams are constantly bringing out new cars.

I know that lower level racing series late model and dirt late model use chrome-moly, but they will run the same chassis for a year or two.

I would also say that using mild steel has something to do with repairs (replacing front and rear clips).

I know on a dirt late model there is only so much you can do for chassis repairs (some of that is design).

If you hit hard on the RF, ideally you would want every joint all the way to the LR to deform a little.

I remember back in the day that sprint car guys were being killedparylized by broken chromemolly cages because they werent normalized.

N needs to be used for that application if I remember correctly.