ChampCar Tech Desk

The tech desk is used to ask technical questions and is not to be used as a post race tech line or to phish for how others built their cars.
Please reference the BCCR as most questions submitted to the TechDesk can be answered by reading the BCCR.
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2023-02-25 - 1-5/8 Tube

Is there a different wall thickness requirement for cages with 1-5/8" O.D. tubing compared to the existing 1.5"/1.75" tubing requirements? We have a car over 2500 pounds and a 1-5/8" cage; what thickness do we need?

With 1.5/8" tube cage, it has to be .095" minimum thicknesses

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