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best speed for fuel economy
#21

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

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#22

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
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#23

I have tried all speeds and if not to many hills 62 is the best eco

Rolleyes Ashley Pardue Coach 589
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#24

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
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#25

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

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