AO Platinum Member
Join Date: Feb 2002
Location: The land that Time forgot
The engine is most efficient just under its torque peak.. but in real life, if that coincides with a higher top speed than 60 or 70mph, then air resistance begins to make its presence felt and you might actually get better mpg below the "optimum" revs point.
Above 60mph air resistance becomes the critical factor on economy whereas below 60mph, economy is more likely to be affected by throttle opening and revs.
A big throttle opening at low revs kills mpg more than a small throttle opening at higher revs. When the throttle needs to be open more than 1/4 to keep the speed, that's where you should be thinking about mpg, if you're on an economy run. Remember that modern throttles are not linear. "Half throttle" is more or less the full monty, not actually half throttle.
No bullets for Chaingun..