All4Chevy

I was reading about the shock tower brace on BMR's website and it says:

Standard model is made with strong 1/4" mounting plates and 1.25" x .095" tubing while the chrome moly version is 1.25" x .065" tubing to insure zero deflection under load.

Am I missing something? How can the 'chrome moly version' be stronger and thinner at the same time? Shouldn't the .095" one be stronger than .065"??
Thanks,
Bill

Bud M

The chromemoly brace is probably roughly equal in strength but lighter. Chromemoly is stiffer than mild steel. The standard BMR brace seems pretty stiff to me. When I try to flex mine by pulling on it I can't detect any flex.

Injuneer

The advantage of chrome moly is its ability to provide the same strength with only 2/3 as much material. It saves weight.

The weight saving on a chrome moly roll cage is appreciable.... about 35# over carbon steel. On an STB, its probably a saving of 1.0 - 1.5#. You have to decide if that's worth $30.

bruecksteve

I have a BMR STB but I can't compare it to anything. I just went with Chrome moly because it was lighter. I don't need to add anymore weight than I have to.