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Author Topic: Post up your gas mileage, please  (Read 8724 times)

Patrick_Krivacka

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Post up your gas mileage, please
« on: May 09, 2010, 05:30:29 PM »
how many miles per gallon y'all gitttin'? Sorry if this is a old question, I did do a search.

Offline Bob_Roller

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Re: Post up your gas mileage, please
« Reply #1 on: May 09, 2010, 05:49:01 PM »
Right now, my average is 40 mpg (17km/l), 200 miles (328km) to reserve, this is surface streets and urban expressways .

I can do better on rural interstate highways, if I keep the speed down to 60-65 mph (98-107km/h), it's about 45 mpg (19km/l) .

But at posted speed limit of 75 mph (123km/h, 36-38 mpg (15-16km/l)is more the usual .

I lost at least 5 mpg (2km/l)  when 10% ethanol was added to the fuel supply  here in Phoenix, back in 2002 .

When the national speed limit was 55 mph (90km/h), and no alcohol in the fuel, I could average low 50's mpg (22-23km/l) on rural interstate highways .

With 83,000 miles on the bike, I wouldn't be surprised if the compression is down from a new engine .

Also the '81 R65 is jetted the richest of the twin shock R65's .

I need to find the smaller jets that I got with the '84 LS, I think they are 138's the same that came with the LS version bikes, the jets in the '81 are 145's .

The 1150 oilhead, gets 48 mpg (21km/l) in the usual city commute, and 58 mpg (25km/l) at 75 mph (123km/h) on rural interstate highways .
« Last Edit: May 09, 2010, 06:20:06 PM by Bob_Roller »
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Reopropf

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Re: Post up your gas mileage, please
« Reply #2 on: May 09, 2010, 05:54:13 PM »
I seem to be at just over 30 mpgallon.  I shift 5-7K and seem to be in the brisk speed limit zone.


Patrick_Krivacka

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Re: Post up your gas mileage, please
« Reply #3 on: May 09, 2010, 07:12:24 PM »
Thanks for the replies. very interesting. Anyone else?

Offline nhmaf

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Re: Post up your gas mileage, please
« Reply #4 on: May 09, 2010, 07:56:59 PM »
If I'm not fighting a headwind or going much over 70 MPH, I generally get 42-46 MPG.   I once got as high as 50.  My worst was probably around 38, fighting high winds and averaging 75 MPH on the interstate for hours, complete with ~120 pounds of camping gear, etc.
Airhead #12178 ? BMWMOA #123173 ?BMWRA #33525 ?GSBMWR #563 ?1982 BMW R65LS ?1978 BMW R100/7 1998 Kawasaki Concours

Offline Semper Gumby

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Re: Post up your gas mileage, please
« Reply #5 on: May 09, 2010, 09:05:52 PM »
At 55-60 mph I get about 45 mpg (US).  

At 75 mph I get about 38 mpg (US).
Bill Gould ?1980/03 R65 When at first you don't succeed....Moo!

Melena

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Re: Post up your gas mileage, please
« Reply #6 on: May 09, 2010, 10:04:18 PM »
I have been getting about 40 - 50 mpg.  I got 50 mpg for sure on a longer trip loaded down with camping gear.  It was highway miles, but mostly slower 2 lane roads and not the big super slab.  When I checked my miles and the gas I used it came to exactly 50 mpg.  I was surprised it was that good.

I usually try to get gas at least by 180 - 190 miles, or sooner.  But then my riding partner and I like to stop somewhere just to stretch our legs every hour so we make sure to get gas every 2 hours.

I haven't checked the mileage on shorter rides.  I'll have to do that.  With the newly rebuilt upper end the mileage may be better.  I'll check it out when I get it back - hopefully this week!  

trolle

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Re: Post up your gas mileage, please
« Reply #7 on: May 10, 2010, 03:40:04 AM »
At this time of year with mixed driving, no highways the Wh8la2 makes 240 miles on a full tank (21.5 liters~5.68 gallons)~42.26 miles per gallon.

On highways with an average speed of 75 mph the consumption is about 35-36 miles per gallon~15 km per liter

greetings from a too cold but sunny and windy north
« Last Edit: May 10, 2010, 03:53:43 AM by trolle »

Offline Barry

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Re: Post up your gas mileage, please
« Reply #8 on: May 10, 2010, 08:40:48 AM »
I Measure every tank from reserve back to reserve again and my average over 3 years on a mix of predominantly short commuting runs with some longer runs is 62 MPG (52 MPG US)

In the summer when I do more Longer runs I easily average 66 MPG  (55 MPG US) although I rarely exceed 60 MPH

« Last Edit: May 10, 2010, 08:51:44 AM by bhodgson »
Barry Cheshire, England 79 R45

azcycle

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Re: Post up your gas mileage, please
« Reply #9 on: May 10, 2010, 11:10:54 AM »
I don't know. :) I really, really need to get a trailtech vapor gauge installed.

Offline Ed Miller

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Re: Post up your gas mileage, please
« Reply #10 on: May 10, 2010, 12:07:26 PM »
I used to get a really consistent 45 mpg regardless of how fast I drove.  Then my odometer quit working and I now get zero miles per gallon.

Ed Miller
'81 r65
Falls City, OR

Crossrodes

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Re: Post up your gas mileage, please
« Reply #11 on: May 13, 2010, 08:55:47 AM »
I haven't checked since last year but as I recall I was getting between 55 and 60 mpg (Imperial Gallon).  I ride mostly on the highway at 90 to 110 kph (around 55 to 65 mph).

scottyintex

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Re: Post up your gas mileage, please
« Reply #12 on: May 13, 2010, 11:03:02 AM »
I get 40 mpg on average.........that is with a side car.

Patrick_Krivacka

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Re: Post up your gas mileage, please
« Reply #13 on: May 13, 2010, 11:11:53 AM »
I'm getting about 40-42 mpg. I'm a little bummed about it. In my research on this model I was lead to believe that I'd get more like 50- 55.

Offline Barry

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Re: Post up your gas mileage, please
« Reply #14 on: May 13, 2010, 01:10:47 PM »
It's often said that worn needles and needle jets cause poor consumption so they may be worth looking at.

My own view is that the idle settings are crucial to good economy. Most of our riding even at highway speeds is done on between 1/8 th - 1/4 throttle where the idle circuits are still contributing significantly to the mixture. This means that if your idle settings are too rich it will hurt overall economy by more than you might think.
Barry Cheshire, England 79 R45