Hey guys, I'm kinda simulate vehicle dynamics. I got gear ratios, torque and RPM values. I find how to calculate instant accerelation from http://spreadsheets.google.com/ccc?key=pBCH2ClzmrplHUNFgrkT7HA Ok now I got acc. I can calculate velocity from acc but my problem is how to calculate losses. I cannot constantly increase vehicle's speed. At certain speed it will stabilize and won't increase or decrease if I keep car's RPM constant... So basicly I need to calculate max velocity of a vehicle at instant RPM and torque... Thank you all..