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Gear Ratio Calculator - Summit Racing Equipment
https://www.summitracing.com/newsandevents/calcsandtools/gear-ratio-calculator
Gear Ratio Calculator Ring-and-pinion selection made easy! Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Just type in your info (example: 5000 RPM), press calculate, and you’ll get the right ratio without the guesswork. Solve For Gear Ratio (ex. 4.56) RPM (ex. 5000) Tire Diameter (in.) (ex. 28) MPH (ex. 45)
Guide To Choosing The Best Gear Ratios For Racing Cars
https://www.yourdatadriven.com/guide-to-choosing-the-best-gear-ratios-for-racing-cars/
A good approximation for this is typically estimated at about 2%-3% of your racing cars weight. Assuming you don’t know the mechanical losses precisely. Aerodynamic drag increases with the square vehicle speed. This is why the line curves up so much. Aerodynamic drag becomes the primary resistance force, especially at higher speeds.
Gear Ratio Basics by JPH Racing
https://jphracing.com/Gear_Ratio_Basics_by_JPH_Racing.cfm
To find the gear ratio, simply divide the spur gear by the pinion gear. As an example, a 120 spur and 20 pinion equals a 6 to 1 ratio. This means that for every 6 turns the motor rotates, the wheels rotate 1 time. When using a car with a gearbox, simply multiply the ratio by the internal gearbox ratio to get an overall ratio.
John Maher Racing » GEAR RATIO CALCULATOR
http://johnmaherracing.com/calculators/gear-ratio-calculator/
GEAR RATIO CALCULATOR Read off your mph at any rpm in any gear. Enter transmission and rear tyre data in the yellow boxes. Tyre diameter is automatically calculated from tyre profile info e.g. 195/55 x 15 = 24.44 inch tyre diameter.
How to pick the right gear ratio for your needs | Articles ...
https://grassrootsmotorsports.com/articles/how-pick-right-gear-ratio-your-needs/
The basic difference in applications is between drag racing, with its standing starts, and road racing, where minimum speeds are possibly around 40 mph. For good drag launches, you often want the lowest possible first gear …
How to Choose the Right Gear Ratio for Your Muscle Car …
https://www.motortrend.com/how-to/how-to-choose-the-right-gear-ratio-for-your-muscle-car-or-drag-racer/
To determine the vehicle's overall First gear ratio we simply multiply the First gear ratio by the rear axle ratio (e.g., 2.48 x 4.10 = 10.17:1).
Choosing the Best Rear End Gear Ratio for Racing - Circle ...
https://www.motortrend.com/how-to/ctrp-0606-best-rearend-gear-ratio/
If we do the math in reverse and divide 87 (the new tire size) by our FDR number, we get a new gear ratio of 5.74. That is what our rear gear should be …
Selecting the Best Gear Ratio - Mark Williams Enterprises, …
https://www.markwilliams.com/selecting-gear-ratio.html
The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. At last glance there are nearly 40 ratios available in standard 9" size, with many of the more popular ratios offered with a 9-1/2" ring gear, which can be accommodated in a 9" housing. What is the optimum gear ratio for your application?
How to Select Gear Ratio Combos for Better Performance ...
https://www.racingjunk.com/news/how-to-select-gear-ratio-combos-for-better-performance-2/
Bigger was better. Out back, you had to pack (at least) a set of 4:11’s to be somebody. The reality was, you didn’t have much choice either; for example, if you were a GM guy all you could get inside a close ratio Muncie was a 2.20:1 first gear set. GM Powerglides offered a bit of choice as they came in either a 1.76:1 or a 1.82:1 low gear ...
RPM vs. Gear Ratio and Tire Height - Summit Racing
https://www.summitracing.com/newsandevents/chartsandguides/rpm-vs-gear-ratio-and-tire-height
This chart shows you the cruise rpm at 60 miles per hour based on gear ratio and tire height. For maximum performance with less converter slip at the lockup point, your converter's stall speed should stall close to these figures. If the gear ratio and tire size you want to use isn't on the chart, use the following formula to calculate cruise rpm:
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