Gear Ratios and Speed Vs RPM Calculations

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longracing
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Gear Ratios and Speed Vs RPM Calculations

Post by longracing »

For those of you who are trying to decide on a engine/gearbox/diff/tyre combination.

Thought I'd share this spread sheet I made. It calculates and graphs "Speed Vs RPM" when you enter in;
redline,
tyre diameter (in inches or you can overwrite the cell B5 with the diameter in cm),
gear ratios,
diff. ratio.

Hope someone gets a bit of use out of it.
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Speed Vs RPM.xls
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Fred
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Re: Gear Ratios and Speed Vs RPM Calculations

Post by Fred »

I should tidy up and publish my drag racing simulator, it does the same thing, but with other parameters also gives you performance numbers :-)

Fred.
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longracing
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Re: Gear Ratios and Speed Vs RPM Calculations

Post by longracing »

I'd be interested in having a look at that some time.

I have had a bit of fun over the years using the engine simulator in the "NIRA Drags" game. Bigger is not always better with the many settings.
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Fred
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Re: Gear Ratios and Speed Vs RPM Calculations

Post by Fred »

It's not a high priority, but I will one-day put it up.
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
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