Author [NL] [FR] [ES] [DE] [SE] [IT] Topic: Fuel mileage  (Read 3561 times)

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  • Offline nervouswreck   us

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    Offline nervouswreck

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    Fuel mileage
    on: Dec 14, 2020, 02.58 pm
    Dec 14, 2020, 02.58 pm
    This may be misplaced but being Trophy related I'll try here.  I have a 2013 SE, one of my riding buddies in addition to his Goldwing has recently purchased a 2013 Explorer XC with 23000 miles.  We just completed a two day ride from South Florida to North Florida and back.  Mostly State Roads, County Roads and some US Highways.  The trip was .right around 950 miles, my gas mileage was around 53 mpg while his was around  38, a huge difference.  At a true 70 mph my engine is spinning at 4000 while his is 4300.  That may account for some difference but not 15 mpg in my estimation.   So a couple of questions,  is the difference in gearing in the tyranny or the final drive?  Is the fuel delivery mapping different in each bike?  Could one change the gearing if in the final drive to that of the Trophy and have the Trophy mapping?  Anyone have any suggestions as to why the big difference in fuel mileage as well as a possible cure?   Just very curious,  thank you very much in advance.
    Last Edit: Dec 14, 2020, 03.06 pm by nervouswreck

  • Offline GarminDave   gb

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    Offline GarminDave

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    Re: Fuel mileage
    Reply #1 on: Dec 14, 2020, 03.03 pm
    Dec 14, 2020, 03.03 pm
    Interesting, my spin would be:

    1. Aerodynamics, Trophy having good airflow.
    2. Right wrist.
    3. Style of riding smooth v aggressive
    4. His bike in need of a tune-up.
    5.  Different fuel used

    Hope you get to the bottom of it because that is a huge difference.  I get about 50mpg from my Trophy but I think US and Imperial Gallon are different.
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    Dave

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  • Offline nervouswreck   us

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    Offline nervouswreck

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    Re: Fuel mileage
    Reply #2 on: Dec 14, 2020, 03.14 pm
    Dec 14, 2020, 03.14 pm
    Thanks for the reply Garmin Dave.  The XC  led the ride so my riding pretty much emulated his.  Although I  don't  know how hard he was twisting it..  There is some aero difference for sure but again not 15 mpg worth, I don't think.  That  plus the gearing difference may account for some.  A lot of the ride averaged around 55 to 60 mph, while some was 70 plus.

  • Offline GarminDave   gb

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    Offline GarminDave

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    Re: Fuel mileage
    Reply #3 on: Dec 14, 2020, 03.58 pm
    Dec 14, 2020, 03.58 pm
    6.  Dragging brake
    7.  Tyre inflation
    Love, light, and kindness,

    Dave

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  • Offline nervouswreck   us

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    Offline nervouswreck

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    Re: Fuel mileage
    Reply #4 on: Dec 14, 2020, 04.13 pm
    Dec 14, 2020, 04.13 pm
    Yes, but knowing this guy I tend to think he would be contentious of air pressure.   Another factor may be the tires themselves there are a semi aggressive tread, not knobbies but aggressive.  Didn't think about that.

  • Offline Saddle Tramp   us

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    Offline Saddle Tramp

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    Re: Fuel mileage
    Reply #5 on: Dec 14, 2020, 04.48 pm
    Dec 14, 2020, 04.48 pm
    Do not underestimate the aerodynamic advantage offered by our fairings.
    I own a BMW R1200GS in addition to my Trophy, and although a different engine with similar displacement, I consistently get 10-15 less mpg with it, particularly with those boxy Touratech Aluminum Panniers affixed.

    As you mentioned, the difference in final drive ratios also contribute to the difference in economy at highway speeds as well.
    Last Edit: Dec 14, 2020, 04.51 pm by Saddle Tramp
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  • Offline trophied   us

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    Re: Fuel mileage
    Reply #6 on: Dec 14, 2020, 05.15 pm
    Dec 14, 2020, 05.15 pm
    And I can assure you that if you put a large Cal Sci windshield on your Trophy you will lose some efficiency, especially if you raise it at highway speeds to get better wind/rain protection.  It's easy to tell how much wind it deflects if you have ever ridden with one and with the Trophy standard screen.  The Cal Sci is very sluggish when raising it at elevated (don't ask) highway speeds, especially in windy conditions.
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  • Offline nervouswreck   us

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    Offline nervouswreck

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    Re: Fuel mileage
    Reply #7 on: Dec 14, 2020, 05.56 pm
    Dec 14, 2020, 05.56 pm
    *Originally Posted by Saddle Tramp [+]
    Do not underestimate the aerodynamic advantage offered by our fairings.
    I own a BMW R1200GS in addition to my Trophy, and although a different engine with similar displacement, I consistently get 10-15 less mpg with it, particularly with those boxy Touratech Aluminum Panniers affixed.

    As you mentioned, the difference in final drive ratios also contribute to the difference in economy at highway speeds as well.

    I guess the aero may be the biggest factor.  15 mpg difference just seems like too much but add it all up, gearing, wind, square panniers, aggressive tire tread it must make that much of a difference.

    Thanks for the input.