Quote:
Originally Posted by Frank Lee
I use 1000-1200 ft/mn piston speed as optimal efficiency zone. I have not personally tested it but several sources that seem legit to me point in that direction.
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How do you calculate/track that while driving? Is there a formula? Seems like you'd need a variety of piston and stroke data as well as RPM.
To the OP: my preferred shift ranges are 1500-2000 rpm or 1700-2200 rpm, and I kinda use the latter more often. My fav cruise option on the freeway is 60 MPH @ about 1900 rpm. At that speed I can get high 60s mpg on average. But I often do pulse and glide on the freeway, using 55-65 mph, 55-70 mph, or 60-70 mph speed ranges.