Average MPG
Ultimate HDF Member
Joined: Jun 2010
Posts: 6,066
Likes: 1,282
From: OH, USA
Mines an 08. Stage 1 ac. Rinehart 2-1. pcv set up to run rich to stay cool. But will lean out to stock AFR at 75mph.
In the last 4083 miles I averaged 41.33 mpg. I keep a log on my iPhone.
In the last 4083 miles I averaged 41.33 mpg. I keep a log on my iPhone.
Seasoned HDF Member
Joined: Jul 2007
Posts: 6,336
Likes: 67
From: SW Minnesota
My mileage is in my signature. I have found that any speed over 60, and a strong head on or cross wind, will affect it dramatically.
Also, running non-oxygenated gas when I can find it, rather than 10% ethanol, will add about 2 mpg.
Also, running non-oxygenated gas when I can find it, rather than 10% ethanol, will add about 2 mpg.
Seasoned HDF Member
Joined: Jul 2007
Posts: 6,336
Likes: 67
From: SW Minnesota
i just did an experiment on this same subject.I have an 03 eg with 510 ss cams,stage one air cleaner system, otherwise stock. I made 3 200 mile trips in a row to the same location, on the same roads. Its a fact for my bike that the closer to 3000 rpms I ride the worse millage I get. At 70 mph I get around 38 mpg, at 65 mph I get 40-42, and at 60 mph I get 44-46. I even filled up at the same gas stations.
Many Harley riders are lugging their engines, especially in the six speed tranny. Mark your throttle position and see how far you have to turn it in a higher gear/lower rpms, vs a lower gear/ higher rpm's. You may be surprised at how much more throttle you have to give it to maintain speed at a lower rpm in top gear.
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Seasoned HDF Member
Joined: Oct 2006
Posts: 5,977
Likes: 85
From: Nevada
I would say that's more of an effect of wind resistance than rpms. Try riding at 60 mph in a gear that turns 3,000 rpm's at that speed and compare your mileage.
Many Harley riders are lugging their engines, especially in the six speed tranny. Mark your throttle position and see how far you have to turn it in a higher gear/lower rpms, vs a lower gear/ higher rpm's. You may be surprised at how much more throttle you have to give it to maintain speed at a lower rpm in top gear.
Many Harley riders are lugging their engines, especially in the six speed tranny. Mark your throttle position and see how far you have to turn it in a higher gear/lower rpms, vs a lower gear/ higher rpm's. You may be surprised at how much more throttle you have to give it to maintain speed at a lower rpm in top gear.
