I am thinking of efficiency only in terms I fuel economy. I figured someone smarter than me has put together a graph showing fuel economy at different speeds. I sure hope Dennis it’s higher than 35!!

Jeff
Sent from my iPhone

> On May 19, 2019, at 10:12 AM, Dennis Haynes <d23haynes57@hotmail.com> wrot:
> 
> For most vehicle max economy occurs at the  lowest speed you can travel in the highest gear you have without lugging the engine. Air resistance is the load. As the Vanagon auto does not have a locking torque converter there is the variable of slip which is massive at lower speeds, especially under 1,800 rpm, the stall speed. So probably somewhere around 30-35 mph is best. Over 55 air resistance goes up exponentially and so will horsepower required. There was a reason that was once set as a national speed limit. 
> 
> Dennis
> 
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Jeff Palmer
> Sent: Sunday, May 19, 2019 10:36 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: So what’s the most efficient speed to cruise at?
> 
> 2.1 auto. Curious!
> Jeff
> 
> Sent from my iPhone