Quote:
Originally Posted by dieselpowered
So then why would you just not make all the cages from DOM or Chromoly? I have heard from many to atleast have the cages made from DOM. Is it a matter of cost or weight? What if you are not racing but want the extra protection from a stronger steel? How much stronger is a DOM cage versus a cage made from 095?
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Sorry for the late reply we were swamped....
To answer your question it is a matter of both. DOM is more expensive than the ERW and Chromoly is even more costly.
DOM is only 1/4% stronger than the ERW and would be twice as expensive for the same 0.95 dia tubing. The reason why most people use the ERW is that not to many consumers would pay $3600.00 for a 4 place cage. The cages you find in a DOM steel are usually a smaller dia and provide the same strenght as the 0.95 wall ERW.
Another factor to think about is why would you have a material stronger than the unit that it is attached to it?
IN another post we talked about energy transfer....if your roll cage is so much stronger than the unit and the occupants...the energy is going to be transfered to them. In the Cup cars we use the ERW so that when a driver hits somthing there is some give in the steel and slows the energy down so that the rest of the car and the driver do not take the damage. When the front of the car gets hit..we can clip it off and still use the rest of the mid and rear sections and our driver walks away....Roll cages are there for your protection, let it do its job and take the energy away from you and your passengers.
Happy Friday.
Sean
