Bonneville Test & Tune

[jww36]

Need some help here from the gearing guru's.

I have a C gas roadster that I run a 3.22 final drive ratio at El Mirage. On the long course at Bonneville I run a 3.08 final drive. I plan on running at the USFRA Test & Tune which will run a three mile course.
Any suggestions regarding gearing?
Thanks,
John
Roadster #114

[Stan Back]

I'd say your split between the two is about right.  The difference (to me) between the three and the five is about 1 to 2%.  But I must say, you're either turning a lot more RPM or got a bigger tire than we've used.

[jww36]

Redline is 8500 RPM. After that I start hearing noises!

[turborick]

we typically gear for 100mph more for Bonneville minimum

[Stan Back]

He's got a real slick roadster, but I think he reaches the "wall" long before you do, Rick.