Quick question on rpms at 60mph....

Discussion in '6th Generation 2002-2013' started by Carolina06HondaRider, Sep 28, 2014.

  1. Carolina06HondaRider

    Carolina06HondaRider New Member

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    For you guys with 2002-2009 VFR800s without drive line upgrades, what rpm are you turning at 60mph? Mine turns right about 4,000rpms. I'm thinking this might be high and that maybe my bike has a sprocket upgrade. I would like to know before I buy new chain and sprockets. Thanks for the help guys.
     
    Carolina06HondaRider, Sep 28, 2014
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  2. MichaelD

    MichaelD New Member

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    Stock sprocket sizes should be 16 front 43 rear.
     
    MichaelD, Sep 28, 2014
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  3. FJ12rydertoo

    FJ12rydertoo Member

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    I've got a '99, but if anything, 4,000 rpm at 60 sounds low not high.
     
    FJ12rydertoo, Sep 28, 2014
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  4. gcarper

    gcarper New Member

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    Recently installed new chain and sprockets [ stock sizes ] on my 05 model and rpm at 60mph [ gps ] is 4k
     
    gcarper, Sep 28, 2014
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  5. FJ12rydertoo

    FJ12rydertoo Member

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    Oops, looks like I was wrong. :confusion:
     
    FJ12rydertoo, Sep 28, 2014
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  6. ictghost

    ictghost New Member

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    Just got back from a ride (stock 07, Gen 6). 4K at 60 mph, right on the money.
     
    ictghost, Sep 28, 2014
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  7. Gweglez

    Gweglez New Member

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    I can confirm also, @ 70mph (National speed limit in the UK) it's just over 4.5k
     
    Gweglez, Sep 28, 2014
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  8. Mark919

    Mark919 New Member

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    Based on gearing calculations, using a standard 180/55 tire diameter of 24.9" and with std. 16F/43R sprockets, a gen 6 at 4000 RPM will be going 58.9 mph. So at 60 mph your RPM will be 4075.
    A gen 5 is geared differently and has 17F/43R sprockets. A gen 5 at 4000 RPM will be going 58.3 mph by calculation.

    Also for reference, a gen 6 with a deeper 45 tooth rear sprocket will be going 56.3 mph at 4000 RPM.

    I hope this helps.
     
    Mark919, Sep 28, 2014
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