fuel mileage
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Tourer
Joined: Aug 2008
Posts: 382
Likes: 36
From: Tennessee
So I Rode out to Milwaukee for the 115th with a co worker. He has a 2017 semi liquid cooled107, i have 2012 air cooled 110. As the trip went along i noticed I was using more fuel that the 107. As of his 1/4 tank i was almost empty. Both are stock bikes. Why is there so much of a difference? just the differences in the engine? thanks Jeff
He haas a 2017 limited nearly the same except for the buffeting feature in the fairing
He haas a 2017 limited nearly the same except for the buffeting feature in the fairing
Last edited by ChickinOnaChain; Sep 16, 2018 at 03:54 PM. Reason: Multiple posts
Road Captain
Joined: Aug 2018
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From: On my motorcycle
Wind resistance has a lot to do with it, and it looks like you're pushing an awful lot of wind. What is the profile of his motorcycle?
What's a "buffeting feature", and which motorcycle has it, yours, or his?
After wind resistance, tire pressures and laden weight would be the next two things to look at.
Effective final-drive gearing can have an effect also.
But I am skeptical that two late-model fuel-injected motorcycles that similar would be significantly affected by the differences of the two engines- they should be running pretty close to stoichiometric at a steady-state cruise on the highway. His liquid-cooled engine may have a higher compression ratio (which would help his fuel mileage), but I still would look at wind resistance first, then tire pressures and laden weight.
What kind of fuel mileage are each of you getting?
I typically get around 40 mpg or so on the highway when sitting up, and on longer trips if I rest my elbows on the tank and cross my forearms (to work the throttle with my left hand), I get around 50 mpg. Wind resistance is HUGE.
After wind resistance, tire pressures and laden weight would be the next two things to look at.
Effective final-drive gearing can have an effect also.
But I am skeptical that two late-model fuel-injected motorcycles that similar would be significantly affected by the differences of the two engines- they should be running pretty close to stoichiometric at a steady-state cruise on the highway. His liquid-cooled engine may have a higher compression ratio (which would help his fuel mileage), but I still would look at wind resistance first, then tire pressures and laden weight.
What kind of fuel mileage are each of you getting?
I typically get around 40 mpg or so on the highway when sitting up, and on longer trips if I rest my elbows on the tank and cross my forearms (to work the throttle with my left hand), I get around 50 mpg. Wind resistance is HUGE.
Last edited by ChickinOnaChain; Sep 10, 2018 at 08:48 AM. Reason: Multiple posts
Seasoned HDF Member
Joined: Apr 2012
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From: Michigan
I have a '13 CVO Ultra with the 110 which as been dyno'ed and has a H-D tuner and Rinehart XT True Dual Exhaust.
Cruising at basically 70MPH, or on two lane roads where my RPM's remain under 3,000 RPM's (or so) I get approximately 40 MPG's
My riding part had a '10 Ultra that was updated from a "96" to a "103", also dyno'ed with the H-D tuner, a fuel-moto dual exhaust pipe and Rinehart mufflers and when we ride together our fuel consumption is nearly identical (usually within 1/10th of a gallon at fill-up).
Higher speed, faster take-off's wind, terrain, even fuel (especially non-ethanol gas if available) can make your fuel consumption fluctuate.
My bike seemed to get better mileage with the OEM exhaust but I thought getting ride of the catalytic converter and having a Harley that sounds like a Harley was well worth a mile or two per gallon.
Cruising at basically 70MPH, or on two lane roads where my RPM's remain under 3,000 RPM's (or so) I get approximately 40 MPG's
My riding part had a '10 Ultra that was updated from a "96" to a "103", also dyno'ed with the H-D tuner, a fuel-moto dual exhaust pipe and Rinehart mufflers and when we ride together our fuel consumption is nearly identical (usually within 1/10th of a gallon at fill-up).
Higher speed, faster take-off's wind, terrain, even fuel (especially non-ethanol gas if available) can make your fuel consumption fluctuate.
My bike seemed to get better mileage with the OEM exhaust but I thought getting ride of the catalytic converter and having a Harley that sounds like a Harley was well worth a mile or two per gallon.
Here is a thread I did about mileage comparison between M8 and the 110.
https://www.hdforums.com/forum/touri...l#post17649280
https://www.hdforums.com/forum/touri...l#post17649280
Thread Starter
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Tourer
Joined: Aug 2008
Posts: 382
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From: Tennessee
I did notice that when we both fueled up that when you look at the run to empty setting on the odometer i would be around 194 he would be about 240 most always a 40 mile difference which would be about 1 gallon.
Stellar HDF Member
Joined: Apr 2017
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From: Westchester, NY
FXDXTSport's thread looks like it might be pretty helpful. It could just come down to small variances in riding style (accel rates, shift points), tunes, mods, etc.
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Tourer
Joined: Aug 2008
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From: Tennessee
thanks for all the reply's It really dosen't matter what the mpg is .... it was just a observation that i needed fuel before he did, Jeff
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