Fuel burn oddity
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Road Master
Joined: Oct 2007
Posts: 915
Likes: 29
From: SE FL & Black Hills SD
Fuel burn oddity
Someone please tell me......
I have been trying to guess WTF is happening here. Two virtually identical bikes, (mine and GFs). Mine is a 04 FLRHSI and hers is an identical 06. Mine has 18,000miles, a stage 1 kit, hers has 72,000 miles, stock but with Rineharts.
I have noticed in the past when we fill up and I asked, she always takes a little more gas.. On a ride back from Key West, Riding together every minute; My speedo said 141.1mi and I took 3.7gal, her speedometer says 147.7mi and took 4.2gal... If anything I’m more aggressive at the take offs, but not by much.. I should have set a trip in the GPS.. Hmmmm....... When my speedo reads 83, the GPS shows 79mph, maybe the error is in my speedo. Still don’t explain the total fuel burn difference.
I have been trying to guess WTF is happening here. Two virtually identical bikes, (mine and GFs). Mine is a 04 FLRHSI and hers is an identical 06. Mine has 18,000miles, a stage 1 kit, hers has 72,000 miles, stock but with Rineharts.
I have noticed in the past when we fill up and I asked, she always takes a little more gas.. On a ride back from Key West, Riding together every minute; My speedo said 141.1mi and I took 3.7gal, her speedometer says 147.7mi and took 4.2gal... If anything I’m more aggressive at the take offs, but not by much.. I should have set a trip in the GPS.. Hmmmm....... When my speedo reads 83, the GPS shows 79mph, maybe the error is in my speedo. Still don’t explain the total fuel burn difference.
Road Master
Joined: Aug 2006
Posts: 1,148
Likes: 157
From: Banning, CA
Someone please tell me......
I have been trying to guess WTF is happening here. Two virtually identical bikes, (mine and GFs). Mine is a 04 FLRHSI and hers is an identical 06. Mine has 18,000miles, a stage 1 kit, hers has 72,000 miles, stock but with Rineharts.
I have noticed in the past when we fill up and I asked, she always takes a little more gas.. On a ride back from Key West, Riding together every minute; My speedo said 141.1mi and I took 3.7gal, her speedometer says 147.7mi and took 4.2gal... If anything I’m more aggressive at the take offs, but not by much.. I should have set a trip in the GPS.. Hmmmm....... When my speedo reads 83, the GPS shows 79mph, maybe the error is in my speedo. Still don’t explain the total fuel burn difference.
I have been trying to guess WTF is happening here. Two virtually identical bikes, (mine and GFs). Mine is a 04 FLRHSI and hers is an identical 06. Mine has 18,000miles, a stage 1 kit, hers has 72,000 miles, stock but with Rineharts.
I have noticed in the past when we fill up and I asked, she always takes a little more gas.. On a ride back from Key West, Riding together every minute; My speedo said 141.1mi and I took 3.7gal, her speedometer says 147.7mi and took 4.2gal... If anything I’m more aggressive at the take offs, but not by much.. I should have set a trip in the GPS.. Hmmmm....... When my speedo reads 83, the GPS shows 79mph, maybe the error is in my speedo. Still don’t explain the total fuel burn difference.
normal speedo error IMHO.
between the ineficencies of the Spedo and wheel size and wear, i think they would be + or - 2 miles different at that distance.
so, the major difference has to be in fuel consumption. How much tuning has been done on each bike, what altitude?
Some of the factors might be in driver style I.E. Cruising in 4th gear. Take Offs, and running the motor at stops or reving the engine. Also there could be a clean and dirty engine and injectors here.
I'm no mechanic, but those are my thoughts.
do either of you have stock or custom wheels?
so, the major difference has to be in fuel consumption. How much tuning has been done on each bike, what altitude?
Some of the factors might be in driver style I.E. Cruising in 4th gear. Take Offs, and running the motor at stops or reving the engine. Also there could be a clean and dirty engine and injectors here.
I'm no mechanic, but those are my thoughts.
do either of you have stock or custom wheels?
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Seasoned HDF Member
Joined: Sep 2007
Posts: 9,206
Likes: 372
From: Central Illinois, Between I-80 and I-74
The difference only appears to be about 3 MPG, probably impossible to pin down one cause as to exactly why.
Could be due to riding style, engine wear, tuning, tire pressure, weight, seating position and any combination of these and other factors.
Could be due to riding style, engine wear, tuning, tire pressure, weight, seating position and any combination of these and other factors.
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
Someone please tell me......
I have been trying to guess WTF is happening here. Two virtually identical bikes, (mine and GFs). Mine is a 04 FLRHSI and hers is an identical 06. Mine has 18,000miles, a stage 1 kit, hers has 72,000 miles, stock but with Rineharts.
I have noticed in the past when we fill up and I asked, she always takes a little more gas.. On a ride back from Key West, Riding together every minute; My speedo said 141.1mi and I took 3.7gal, her speedometer says 147.7mi and took 4.2gal... If anything I’m more aggressive at the take offs, but not by much.. I should have set a trip in the GPS.. Hmmmm....... When my speedo reads 83, the GPS shows 79mph, maybe the error is in my speedo. Still don’t explain the total fuel burn difference.
I have been trying to guess WTF is happening here. Two virtually identical bikes, (mine and GFs). Mine is a 04 FLRHSI and hers is an identical 06. Mine has 18,000miles, a stage 1 kit, hers has 72,000 miles, stock but with Rineharts.
I have noticed in the past when we fill up and I asked, she always takes a little more gas.. On a ride back from Key West, Riding together every minute; My speedo said 141.1mi and I took 3.7gal, her speedometer says 147.7mi and took 4.2gal... If anything I’m more aggressive at the take offs, but not by much.. I should have set a trip in the GPS.. Hmmmm....... When my speedo reads 83, the GPS shows 79mph, maybe the error is in my speedo. Still don’t explain the total fuel burn difference.
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rok312
Ignition/Tuner/ECM/Fuel Injection
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