Quote:
Originally Posted by El Sid
I thought it was funny - real world - I'm in cruising in 2nd or 3rd at those speeds. How is it clearer to have a 200 rpm difference? Is the low speed to discount the effect of wind resistance? To make our point/observation - you will have better fuel economy at 45 mph in 5th gear than 45 mph in 3rd. Are you not closer to the torque peak in 3rd gear?
Yes, I would think that lower vehicle speeds and lower engine speeds would yield lower gasoline comsumption.
I did set the cruise today at 1500 in 5th - works well to keep out of trouble if the copper is behind you.
|
El Sid-
Well, I guess if you can go through a tank of gas at 1500 rpms in 5th and accurately measure your gas mileage, I'll believe you and recant all I've claimed...until then I'll still guarantee it! An S2000 at 1500 won't even activate cruise control. The engine was not designed either by torque, valve train, nor gears to run at such low engine speeds for longer than it takes to get to 2nd gear.
And I'll even bet that, using the cruise control, the further you get into your torque curve in your 45 mph in 3rd versus 4th, versus 5th, that you use less gas in third!
Rookie-
Show me your engine maps and relate them to the engine's torque curve and I'll believe you...
-Quick