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Thread: Fuel Economy - Whats Your MPG

  1. #11
    Senior Member Thumper's Avatar
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    The shop manual for my 1972 Yamaha G7S, a 80cc single, says it gets 190 mpg at 25 mph, but I haven't bothered to get it running yet to test that.
    I'm only going on at length about this to bug you Murray, you do realize that, right?
    The 2,4,10 rule: know what is happening 2 seconds, 4 seconds and 10 seconds down the road.

    Current: '03 Kawasaki ZZR1200, '84 Kawasaki GPZ900R, '84 VF500F Interceptor, '83 GL650I, '81 CX500C, '82 GL500I project, '81 CX500C basket case, '79 CB750LTD, '85 CB700SC, '01 Kawasaki ZRX1200R, '72 Yamaha G7S

  2. #12
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    not bugging me
    and why do that anyways?
    GET AN OIL FILTER ADAPTER

    Order The Quick Build Exhaust Pipes


    GET A QUICKSET VALVE TOOL


    Way to many bikes to maintain this list LOL !!

    email me at murray at murrayscarbs.com

  3. #13
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    hey thumper i got my nighthawk done

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    izak and OCR like this.
    GET AN OIL FILTER ADAPTER

    Order The Quick Build Exhaust Pipes


    GET A QUICKSET VALVE TOOL


    Way to many bikes to maintain this list LOL !!

    email me at murray at murrayscarbs.com

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  5. #14
    Senior Member Thumper's Avatar
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    Lookin' good.
    Is that a 750 with hydraulic lifters or something else?
    The 2,4,10 rule: know what is happening 2 seconds, 4 seconds and 10 seconds down the road.

    Current: '03 Kawasaki ZZR1200, '84 Kawasaki GPZ900R, '84 VF500F Interceptor, '83 GL650I, '81 CX500C, '82 GL500I project, '81 CX500C basket case, '79 CB750LTD, '85 CB700SC, '01 Kawasaki ZRX1200R, '72 Yamaha G7S

  6. #15
    Senior Member purplecx500's Avatar
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    My " 6.6 Gal. Tank" is a GL1000

    CX500C will semi-retire in June.

    Unless somebody wants a 6300 Mi.

    unit.
    SideCar Bob's settings. http://cx500forum.com/forum/general-...ould-make.html
    Main Wiki you can search by topic: http://cx500forum.com/mediawiki/inde...itle=Main_Page
    Old rant http://cx500forum.com/forum/general-...me-advice.html
    St
    StatorTest;;
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    'Eager" 1979 CX500C Maroon.
    Named for the way it runs/sounds @ 65 +

  7. #16
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    hydrauilc lifter 91
    Thumper likes this.
    GET AN OIL FILTER ADAPTER

    Order The Quick Build Exhaust Pipes


    GET A QUICKSET VALVE TOOL


    Way to many bikes to maintain this list LOL !!

    email me at murray at murrayscarbs.com

  8. #17
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    Fuel Economy - Whats Your MPG

    Non-turbo, no windscreen , 2-1 mac exhaust, pretty sure I'm running rich.








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    Last edited by simply500; 05-16-2017 at 01:11 PM.
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    '82 CX500 Custom w.i.p.

  9. #18
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    I don't think I'd be able to say more than just 45-55 mpg. My speedo is off by 3-5mph by those roadside radar gizmos (speedo reads low) so odometer may be off too, I'd need to fill the tank to the exact same fill line every time also.
    Most of my riding is local, half to one hour shots for commuting and I tend to stay between 3700 and 4500 rpm, depends on the road grade. I have gone on a few 5hr+ jaunts and up to almost 8K rpm and it gives an appearance toward the higher end.
    AKA Eric
    1982 GL500 Silver Wing Interstate
    Oh but to have a garage and all the tools again.

  10. #19
    Senior Member George in Indiana's Avatar
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    Quote Originally Posted by murrayf View Post
    thumper you dont get 50 mpg from the kawis when you are pulling 125 hp

    it takes fuel to make power
    My Hayabusa averages 48 to 50 mpg at 80 mph and it's 175 hp.

    The 500T averages about 50 at a constant highway speed over flat interstate. My more powerful 650T does 2 to 3 BETTER which of course is much lighter and has far better gearing.
    CX500 TURBO
    CX650 TURBO
    GSX1300R Hayabusa

  11. #20
    OCR
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    Senior Member OCR's Avatar
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    My 79 C with Hondaline fairing will average around 54 mpg if I keep it under 70.
    I have not done a sample at higher speeds.
    Past Master, Dryden Lodge #472
    Caroline Lodge # 681
    RAM Fidelity # 77





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    we are all given sh*t in life, but some of us learn to turn it into fertilizer and grow from it, and some us try to fling it on others like monkeys.

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