Gearing Calculator Website

[Sh4d5t4r]

So I was looking around trying to find a sensible website to work out gear ratios and I came up with this one:

https://www.blocklayer.com/rpm-gear.aspx

When you install a custom gearbox in-game just put your selected final gear ratio setting into the "Diff Ratio" box on the website so that they match. There is a calculator at the bottom of the web page for working out your tire diameter (for example a 255/65/18 tire will calculate out as a diameter of 789).

I found it more accurate to set the site to "Shift AT" 5500 rpm, this seemed to work out best for the upper-rpm gear shift value. Then just put in your number of chosen gears and hit the blue "shift and trace" button on the website. Et Voila... all the hard work done for you.

The game is not 100% accurate in physics but the results on this website and the results in-game are quite close. A little tweaking may be required but with practice you should get close to the results you are after.

Hope this helps... ;)

[Mardoin69]

Using that method, do you have spin-out issue's with higher hp motors going from 1st gear to 2nd and / or 2nd to 3rd? Just wondering cuz, I originally started out using real life gear ratio's only to end up having spin-out issues when there was too much speed increase in 2nd gear.

[Sh4d5t4r]

Actually, now that you mention it, yes I did. However I found that by changing the Final Ratio value in-game I could get rid of the spin-out issues in the lower gears.

I should mention that I have downloaded the Plymouth DLC which unlocks the Speed Track (drag strip) in-game which is great for testing straight-line acceleration characteristics when using a customised gearbox.

I started out with a final gear ratio of 5, which on the website is listed as "diff ratio", then dialled the in-game 1st gear ratio slider to the left until the revs stopped topping out before changing to second. Then if that was laying down too much torque and causing me to spin sideways I lowered the final gear ratio and re-adjusted the 1st gear ratio until I got a smooth power acceleration in 1st and a clean change to second without the revs topping out and without spinning sideways.

I then transferred the in-game final gear ratio to the "diff ratio" box on the website, put in my Tire Diameter, set the Shift at 5500 then hit the shift and trace button. This got me within a reasonable range of ratios which I could then tweak in-game to get smooth gear transitions.

I suppose a rule of thumb would be that if the revs are topping out in a gear before a change, move that gear ratio slider left slightly until it changes smoothly up to the next gear, then if it is laying down too much torque in that gear after doing that it means that the final gear ratio is wrong, so reduce the final gear ratio at the top to the left slightly and re-tweak until you get a balance. Then move on up through the gears until they should all balance.

If there is a dip in revs or an overpower of torque between gear changes caused by too big of a ratio gap then add another gear and re-balance again from the start.

This is long-winded but it generally works for me. The website saves me a ton of time though by using the first method above, in-game use the first gear to find out the best final ratio, then use that on the website to get you in the general ball-park for the rest.

Hope this helps ;)