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zonker · 02-23-2011, 07:29 PM

nothing the government ever does is purely scientific. throw a few special interest lobbyists in the mix and then you have the real reason on the 55mph selection.

i'm sure the best vehicle speed has to do when the aerodynamic drag starts to contribute substantially to the speed equation.

as for engine speed, i'm going to guess it's on the idle speed side of the peak torque curve, so in my engine's case, it produces peak tq numbers at 2500 rpm, so somewhere between 1000 rpm and 2500 rpm would be ideal.

02-23-2011, 07:29 PM	#22 (permalink)
zonker 500 Mile Metro Traveler Join Date: Jan 2011 Location: Sun City, CA Posts: 183 '89 Dakota LB - blue - '89 Dodge Dakota V6 LE 90 day: 19.8 mpg (US) '17 Fiat 124 - SunFiat - '17 Fiat 124 Spider Classica 90 day: 30.51 mpg (US) '89 Metro - The Egg - '89 Geo Metro Base 90 day: 50.71 mpg (US) '94 Alto - The Box - '94 Suzuki Alto Ce-L 90 day: 39.5 mpg (US) Thanks: 14 Thanked 13 Times in 10 Posts	nothing the government ever does is purely scientific. throw a few special interest lobbyists in the mix and then you have the real reason on the 55mph selection. i'm sure the best vehicle speed has to do when the aerodynamic drag starts to contribute substantially to the speed equation. as for engine speed, i'm going to guess it's on the idle speed side of the peak torque curve, so in my engine's case, it produces peak tq numbers at 2500 rpm, so somewhere between 1000 rpm and 2500 rpm would be ideal. Last edited by zonker; 02-23-2011 at 07:35 PM..