Driving a rubi manual vs a sport manual

[wanderer]

Has anyone driven both of these back to back? I am curious as to what the difference feels like with regard to the different gear ratios especially in Low. I assume that in high all the gears and the transfer case high range are the same.. On a similar note if I can't find a rubi with a manual will the sport with the manual be same? I don't think so because tire size will be pretty different thus the final drive ratio would be different.

Thoughts and experiences?

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[Direwolf]

The axle ratios are also different: 3.45 in the sport vs. 4.10 in the Rubicon. Sport tire circumference is approximately 98.86" and Rubicon is about 102.76". So multiplying that all out and converting to mph...

1st gear sport: 1000rpm / 3.45 / 5.13 * 98.86" * 60m/h / 63360"/mi = 5.29mph per 1000rpm
1st gear Rubi: 1000rpm / 4.10 / 5.13 * 102.76" * 60m/h / 63360"/mi = 4.63mph per 1000rpm

6th gear sport: 1000rpm / 3.45 / 0.72 * 98.86" * 60m/h / 63360"/mi = 37.69mph per 1000rpm
6th gear Rubi: 1000rpm / 4.10 / 0.72 * 102.76" * 60m/h / 63360"/mi = 32.96mph per 1000rpm

Basically, the Rubicon is geared about 12.5% higher than the sport and its speed in any gear at the same RPM is roughly 87.5% of the sport's. That's assuming that I did all the math correctly, of course... Feel free to double-check and put it in a spreadsheet or something.

 

[wanderer]

thanks!

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