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Old 07-26-2013, 03:02 AM   #151
Wirespokes
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Joined: Jul 2002
Location: Jackson's Bottom Oregon
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A lot depends on the rider's weight, so be sure to factor that in.
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Old 07-26-2013, 11:38 AM   #152
Ray R
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Location: Aurora, OR
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Quote:
Originally Posted by Wirespokes View Post
A lot depends on the rider's weight, so be sure to factor that in.
Oh crap! I'm screwed!
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Old 07-26-2013, 04:14 PM   #153
53dodgekustom
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Joined: Apr 2012
Location: Waterloo, IL
Oddometer: 54
My 71 R60/5 with 30mm Delorto's gets an average of 37 mpg I'd say. Riding between 60 and 70 mph. I have gotten a best of 52 mpg riding 45 mph following a slow /2. Riding 2 up into the wind trying to go 75 mph results in 28 mpg.




My dad's airheads are two extremes. The R26 on the left has gotten a best of 70 mpg putting around on backroads. The R50/2 with the heavy Ural sidecar gets about 20 mpg. Both are happy at 50 mph and are ridden at WOT A LOT to keep up with traffic!!!!

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Old 07-26-2013, 10:09 PM   #154
LoneRanger
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Location: Lewistown, Montana
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I'm averaging 44.4 mpg with my 1980 R100T.

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Old 07-01-2014, 11:29 AM   #155
jbf
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Joined: Apr 2012
Location: Los Angeles, CA
Oddometer: 39
Damn, seems like most people with quite high MPG on their R75/5s.


I'm only getting an average of 35.8 MPG right now. Carbs have been rebuilt and synced. They might be running a tad rich, but besides that what else could contribute to loss of fuel economy?


I weigh only around 180-85lbs and ride mostly solo with little to no extra baggage.

Running with california 91 octane with 10% ethanol.
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Old 07-01-2014, 12:58 PM   #156
R100RTurbo
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Joined: May 2014
Location: Abbotsford, BC Canada
Oddometer: 97
5.7 liters/100km (Canada Hey)
This is fairly consistent, with heavy roll on sessions mixed in with combined city/hwy.
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Old 07-01-2014, 05:31 PM   #157
BMW851
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Joined: Dec 2010
Location: Hillbilly Country, West of The Big Smoke, Orstraya
Oddometer: 40
1988 R100RS

Average fuel consumption

5.8 L/100
48.9 mpg Imp. Gallon (4.546 Litres)
40.7 mpg US Gallon (3.7854 Litres)

Mostly just cruising along on a 210 Km loop I do through the local mountains.
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Old 07-01-2014, 06:34 PM   #158
Beezer Josh
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Location: 15.6 miles from the U.S. Capitol
Oddometer: 838
Alright guys, two weekends ago I rode 1500 miles in 3 days on my '73 R75/5. I checked gas mileage at every stop. My best fuel consumption was 42 MPG, worst was a little over 38. This makes absolutely no sense to me, but when I held a relatively steady 55 MPH in 4th gear on flat roads, I got the worst gas mileage. My best gas mileage was flogging it in the sweeping curves in the Adirondacks, going 60 in 3rd gear with two loaded panniers. I also found oil consumption to be the inverse: the bike ate oil while flogging it, didn't seem to lose a drop when on the flat roads.

So, my best ever on my /5 is 42 MPG (US). Worst was about 33 when I raised the needle position and enriched the mixture. I'm 6'2" and weigh about 225.

Does anyone know if the values quoted in the owner's manual are US MPG or Imperial MPG?
Nevermind, it says MPG US. It was a vain hope that I was nearing the 52.3 they mention in the book...

Beezer Josh screwed with this post 07-01-2014 at 06:46 PM Reason: Found my answer
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Old 07-01-2014, 07:13 PM   #159
mendoje
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Joined: Jun 2009
Location: Los Angeles
Oddometer: 235
On my 81 R100RS, long since gone, a lifetime ago I got 44 mpg, no matter what, about 75% freeway vs 25% surface streets.

On my current 86 R80 G/S, about 35 mpg for the same type of driving.
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Old 07-01-2014, 07:40 PM   #160
MotorcycleWriter
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Joined: Dec 2012
Location: N.Alabama, World's Rockiest Trails
Oddometer: 867
'89 R100GS, 28K miles, mostly city riding, 93 octane gas, hot weather, 39 mpg.
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Old 07-01-2014, 08:53 PM   #161
Renner
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Joined: Jul 2007
Location: sunny SoCal
Oddometer: 2,008
'90 R100GS with sidebags averaging 78 mph indicated on the interstate: 36mpg

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Old 07-02-2014, 04:39 AM   #162
种.
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Joined: Jul 2009
Location: Finland
Oddometer: 261
5.5 l / 100 km when doing long distance cruising.
Over 6 l / 100 km when commuting.

-82 R100 with rs fairing.
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Old 07-02-2014, 06:39 AM   #163
chasbmw
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Location: Bath Uk
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My R90/6 has been up to 4.4 KM per litre, which is around 63MPG (imp)

This was on the highway , fully loaded for 2 month trip at around 60-65, really amazing.
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Old 07-02-2014, 08:20 AM   #164
Lornce
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Joined: Aug 2003
Location: Way Out There.
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Quote:
Originally Posted by chasbmw View Post
My R90/6 has been up to 4.4 KM per litre, which is around 63MPG (imp)

This was on the highway , fully loaded for 2 month trip at around 60-65, really amazing.
Do you mean 24.4km/litre?

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Old 07-02-2014, 09:20 AM   #165
B_C_Ries
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Joined: Mar 2013
Location: Imperial Valley, California
Oddometer: 1,837
I'm getting around 45 mpg with my 1977 R100/7.
I like to lay down on the tank on long rides, Even if I am not in a hurry aerodynamics are important for motorcycles..
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