Posts: 5,751
Threads: 493
Joined: Jul 2012
today we drove another 200 miles and just had dinner with jimmy in ok city.
the combined 400 mile trip was 8.5mpg. alot more uphill this time.
i also noticed that at 55mph it is in 5th gear at 1500 rpm it doesnt shift into 6th until 61mph. then it is about 1400 rpm. so i ran 62 today
tom
2002 45'8" Newell Coach 608 Series 60 DDEC4/Allison World 6 Speed HD4000MH
Posts: 58
Threads: 2
Joined: Feb 2013
I have found that I get about the best economy/ diveability at 65 MPH. At 55 mph it is too slow when you get to a hill and then it has to downsift right away. MPG did not really improve at 55 vs 65 mph. On a long trip I will average 8.5 m/imperial gallon ( 7m/US gallon)on the interstate, and 7.5 (6 to US gallon) on the smaller windier roads. I can do better on flat runs but I live in the mountains of the West Coast.
On a 3500 mile trip I will average 8.5 miles to the imperial gallon. (7n/USG)
Peter Haggins
Courtenay BC
Canada
96 Wanderlodge 42' Mid Door
Posts: 208
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Joined: Mar 2013
I have tried all speeds and if not to many hills 62 is the best eco
Ashley Pardue Coach 589
Posts: 1,367
Threads: 66
Joined: Jul 2012
My coach shifts into 5th gear at 55 mph, so I run about 58-60. Really comes down to the speed I feel the most comfortable at, and 58 is my sweet spot.
Clarke and Elaine Hockwald
1982 Newell Classic, 36', 6V92 TA
2001 VW Beetle Turbo
Cannondale Tandem
Cannondale Bad Boy
Haibike SDURO MTB
http://whatsnewell.blogspot.com
Posts: 5,751
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Joined: Jul 2012
clarke. as of two weeks from now, your sweet spot is 62
tom
2002 45'8" Newell Coach 608 Series 60 DDEC4/Allison World 6 Speed HD4000MH
