Manu_Bela Posted September 5, 2018 Share Posted September 5, 2018 First of all, it is necessary to know that this depends on the diameter of the tire used in your vehicle. With that in mind, we'll do a calculation to set the number of revolutions per minute (RPM) you'll get using a certain ratio on various tire measurements. Step 1: Calculate the Reason for the Crown and Pinion Calculating the relationship between the crown and the pinion is very simple, for this, just count the number of teeth of the crown and the pinion, and divide by the other, you will have the value of the ratio of your crown and pinion. Example: crown with 44 teeth / pinion with 9 teeth = 44: 9 = 4.88 Step Two: The Tire Diameter To reach the RPM number, we will use the tire diameter in inches. Some tires already come with the size of the inch identified on the side, for example 31 × 12.5 R15, where 31 would be the inch diameter of the tire. This is usually quite common in trucks and buses. Now that you know the diameter of your tire, we will calculate the revolutions per minute. To make this calculation, we take into account the vehicles under the following conditions: Speed: 65mph (about 100km / h) Manual Transmission Vehicle with Final Ratio 1: 1 The formula applied is as follows: RPM = MPH (65) x Trans Ratio x Rearend Ratio x 336 ** Tire Diameter With this in mind, we can see that the larger the tire, the higher the speed for the same RPM. We also noticed that the lower the crown / pinion ratio, the higher the speed. For more strength will be the opposite: smaller tire diameter and higher crown / pinion ratio. It is a real relationship. NOTE: Vehicle speed (mph), engine speed (rpm), tire diameter (inches), trans gear ratio, and rear axle gear ratio are all interrelated. If you know four out of five of these values, you can determine what the unknown value is (or what it needs to be to achieve your desired goals) ** The unreduced formula for finding vehicle mph involves multiplying engine rpm by the number of minutes in an hour (60) and multiplying the tire diameter by pi (π) to find the circumference of the tire in inches. Then multiply both of these individual products together, and divide by the overall gear ratio times the number of inches in a mile (63,360). “336” is simply the reduced, rounded-off whole-number value of these various constant values. I, particularly, prefer higher speed. Link to comment Share on other sites More sharing options...
AshlynsGaming Posted September 5, 2018 Share Posted September 5, 2018 Umm lol thanks I guess. Stay happy and safe Link to comment Share on other sites More sharing options...
AmiriM#4530 Posted September 5, 2018 Share Posted September 5, 2018 detailed information.. Link to comment Share on other sites More sharing options...
AloneWolf. Posted September 5, 2018 Share Posted September 5, 2018 different information Thank you Link to comment Share on other sites More sharing options...
Sam9k Posted September 5, 2018 Share Posted September 5, 2018 Yeah.... Science Link to comment Share on other sites More sharing options...
TNT-LØG Chocola 023 Posted September 5, 2018 Share Posted September 5, 2018 Extreme difficulty!! Link to comment Share on other sites More sharing options...
Interstate Nomad Posted September 5, 2018 Share Posted September 5, 2018 2 hours ago, Mineiro Uai said: Step 1: Calculate the Reason for the Crown and Pinion Thank you for this informative and interesting thread. Could you give me a hint on where I can find Information of the crown and pinion for a specific truck? Link to comment Share on other sites More sharing options...
Enf099 Posted September 5, 2018 Share Posted September 5, 2018 Thanks for sharing this information, @Mineiro Uai, it's indeed very interesting. However, as it is not related to TruckersMP nor any of the games that we support, I'm going to move it to the Off-Topic section of the forum. The Euro Truck Simulator 2 Discussions section is dedicated to stuff regarding that game, strictly, and your topic is more related to real life engines. Thank you for your understanding. Asides, don't hesitate to contact me or any of the Community Moderation staff if you have any questions, we'll be happy to attend you Albert, TruckersMP Community Moderator. //Moved to Off-Topic. Usually findable between Western Germany and Denmark. Link to comment Share on other sites More sharing options...
Guest Posted September 5, 2018 Share Posted September 5, 2018 Nice topic for beginners in the game, thanks for this topic. Link to comment Share on other sites More sharing options...
Manu_Bela Posted September 5, 2018 Author Share Posted September 5, 2018 22 minutes ago, Joao Rodrigues said: Thank you for this informative and interesting thread. Could you give me a hint on where I can find Information of the crown and pinion for a specific truck? In Transmission (ETS2) - like this 9.08 or 14.25. low - speed and Hight - strenght Link to comment Share on other sites More sharing options...
Manu_Bela Posted September 5, 2018 Author Share Posted September 5, 2018 47 minutes ago, Mineiro Uai said: In Transmission (ETS2) - like this 9.08 or 14.25. low - speed and Hight - strenght Remember: tire diameter is important too Link to comment Share on other sites More sharing options...
Suleyman.53 Posted September 19, 2018 Share Posted September 19, 2018 Hello; As your topic has been inactive for over 14 days, we are archiving your topic. Due to the fact our forums are a busy place, we archive topics that are inactive for 2 weeks to help keep just those topics that are truly active for our community. If you have any further questions or comments, or wish for your topic to be unarchived don't be afraid to contact me. //Moved to Archive Link to comment Share on other sites More sharing options...
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