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Author Topic: Bonneville Test & Tune  (Read 2405 times)

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Offline jww36

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Bonneville Test & Tune
« on: June 23, 2017, 06:56:55 PM »
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
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Offline Stan Back

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Re: Bonneville Test & Tune
« Reply #1 on: June 23, 2017, 07:44:00 PM »
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.
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Past (Only) Member of the San Berdoo Roadsters -- "California's Most-Exclusive Roadster Club" -- 19 Years of Bonneville and/or El Mirage Street Roadster Records

Offline jww36

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Re: Bonneville Test & Tune
« Reply #2 on: June 23, 2017, 07:56:27 PM »
Redline is 8500 RPM. After that I start hearing noises!
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Offline turborick

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Re: Bonneville Test & Tune
« Reply #3 on: June 23, 2017, 08:08:55 PM »
we typically gear for 100mph more for Bonneville minimum
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Rick Yacoucci

The new Nebulous Theorem 3.5 #788
http://www.bonnevillestreamliner.com

Offline Stan Back

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Re: Bonneville Test & Tune
« Reply #4 on: June 23, 2017, 08:54:17 PM »
He's got a real slick roadster, but I think he reaches the "wall" long before you do, Rick.
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Past (Only) Member of the San Berdoo Roadsters -- "California's Most-Exclusive Roadster Club" -- 19 Years of Bonneville and/or El Mirage Street Roadster Records
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