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what should the speed (mph) be at 9,500rpm in fifth gear?

Discussion in 'XJ Technical Chat' started by joshs700n, Jul 6, 2014.

  1. joshs700n

    joshs700n Member

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    I was wondering what speed mph the xj700n should be in fifth gear at 9500rpms or 9700rpms
     
    joshs700n, Jul 6, 2014
    #1
  2. bmarzka

    bmarzka Active Member

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    The specs say 129 at redline. I don't know if I really want to find out.
     
    bmarzka, Jul 6, 2014
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  3. peganit2

    peganit2 Member

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    peganit2, Jul 6, 2014
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  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Re: what should the speed (mph) be at 9,500rpm in fifth gear

    That calc is quite simplified. It does not account for aerodynamic drag, which is substantial for a motorcycle at speed.

    (cool fact: 20HP can make a fellow go 145MPH when the vehicle is slippery enough http://buddfab.net/buddfabhomepage.html )

    120-130 in the real world, depending on atmospheric conditions, and the state of the power plant.
     
    k-moe, Jul 6, 2014
    #4
  5. peganit2

    peganit2 Member

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    Re: what should the speed (mph) be at 9,500rpm in fifth gear

    The calc is simple, whether or not it can do it is a different question.
     
    peganit2, Jul 6, 2014
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  6. joshs700n

    joshs700n Member

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    (cool fact, 25HP can make a fellow go 180MPH when the vehicle is slippery enough) lol
     
    joshs700n, Jul 6, 2014
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  7. TIMEtoRIDE

    TIMEtoRIDE Active Member

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    An easy way to figure is drive exactly HALF redline - 4,750 , and note the speed. For best accuracy, bring along a GPS devise / phone.
     
    TIMEtoRIDE, Jul 7, 2014
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