New links!
Just added some new ones.
Gearing Calculator The Race Technology Gear Calculator will calculate vehicle speeds in the different gears at various engine speeds, as well as calculating the rolling circumference of the tyres and rev drops when changing gears. Aero Drag and Rolling Resistance Calculator This tool will calculate the aerodynamic CD and Rolling Resistance of a vehicle by performing deceleration tests. |
The Gearing Calculator is handy. Here's what you get from an FD with stock gear ratios and a stock 4.1 manual trans rear end rolling on 245/45/16 tires shifting at 6500 rpm:
Speed 1000 2000 3000 4000 5000 6000 7000 8000 Rev drop on shift 1st 4.9 9.9 14.8 19.7 24.7 29.6 34.5 39.5 2740 2nd 8.5 17.1 25.6 34.1 42.7 51.2 59.7 68.2 2013 3rd 12.4 24.7 37.1 49.4 61.8 74.1 86.5 98.9 1827 4th 17.2 34.4 51.6 68.8 85.9 103.1 120.3 137.5 1827 5th 23.9 47.8 71.7 95.6 119.5 143.4 167.4 191.3 Engine speed at 70mph in 3rd =5664rpm Engine speed at 70mph in 4th =4072rpm Engine speed at 70mph in 5th =2928rpm |
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