Listed SGPR Ratings

Discussion in 'Racquets' started by cys19, Oct 1, 2006.

  1. cys19

    cys19 Semi-Pro

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    Serve/Groundstroke Power Ratios

    travlerajm's calculations:
    Sampras' racquet had an SGPR rating of +4.5.
    Agassi's racquet had an SGPR rating of +3.
    Safin's racquet has an SGPR rating of +1.5.

    A Pure Drive Roddick Plus has an SGRP of +1.

    An RDS001 mid has SGPR of -4.
    An RDS001 mp has SGPR of -7.

    ========================
    cys19's calculations sorted in descending order
    H6 Hammer +1.44
    Agassi LE +0.85
    O3 Silver +0.84
    PD + Roddick +0.69 (close to travlerajm's)
    Prostaff 6.0 85 -0.52
    FXP Rad MP -1.09
    FXP Instinct MP -1.61
    LM Rad OS -1.61
    Pure Drive + -1.61
    O3 White -2.14
    FXP Rad OS -2.14
    Wilson n6.1 90 -2.32
    POG MS -2.57
    LM Rad MP -2.61
    Pure Drive -2.61
    FXP Rad Tour -3.00 (Added 10/2)
    O3 Hybrid Tour -3.00
    M-Fil 300 -3.07
    LM Instinct Tour XL -3.87 (Added 10/2)
    RDS001 MS -4.15 (close to travlerajm's)

    Do they look right?
     
    #1
  2. cys19

    cys19 Semi-Pro

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    Question: Is the FXP Radical MP that great of a serving racquet?
     
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  3. AlpineCadet

    AlpineCadet Hall of Fame

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    So which ProStaff 6.0 90 are you talking about? Federer's? ;)
     
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  4. cys19

    cys19 Semi-Pro

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    WHoops! 85! Same SGPR value. ;)
     
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  5. bertrevert

    bertrevert Hall of Fame

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    So you're using this equation from travlerajm:

    "To calculate the SGPR rating, I use the formula SGPR = 8*[R - 44.6/sqrt(M)], with R = balance in inches, and M = weight in ounces."

    Using my actual RDS 001 MP racquet measurements I get:

    8*[12.31-44.6/3.46] = -4.64

    I'm still trying to get over the fact that the 001 MP is rated so poorly for serving! My figures include 20g stringbed and I added 5g lead (not as much as travlerajm recommends), to butt and hoop to polarize the racquet for more spin.

    -4.64 is better than -7 for serving. To get it down further I have to increase top hoop lead to bring the balance point further away from the butt, and also increase static weight.
     
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  6. cys19

    cys19 Semi-Pro

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    I'm quite surprised that the FXP Radical MP is rated so high. Nobody on this forum has said anything great about its serving power, other than its spin capabilities. Albeit still a n00b, I would surmise that SGPR ratings don't pertain to the Flexpoint models because of the two holes that cause the racquet face to bend. Please correct me if I'm wrong.

    And look at how the LM Rad OS is on par with the PD+!

    travlerajm, what are some factors that can make a perfectly fine serving racquet have low values and vice versa?
     
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  7. bertrevert

    bertrevert Hall of Fame

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    I'd say Radicals (all of them) are good serving sticks. I think of them being that sort of serious almost-players frame that you see in abundance down the local courts on weekends, but not in the hands of pros on tour.

    Ok I've spent a year or two with Rads, and I'm sure there's many here who have spent much longer than that, and they've been a great frame, a great platform to customise, and very good for serving. But yes could the FXP be THAT good for serving?

    I think you are asking does this formula and these results actually correspond to the real world?
     
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  8. cys19

    cys19 Semi-Pro

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    Yep.
     
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  9. jackson vile

    jackson vile Legend

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    Oh man you left out all the prestiges LOL and the N61 tour 90 LOL


    Great work though
     
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  10. jackson vile

    jackson vile Legend

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    Oh I saw the formula changed LOL I think that it would be good to make a non clutered reference page.
     
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  11. jackson vile

    jackson vile Legend

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    Here are the new numbers from cys19



    n6.1 Tour 90 = 1.158
    POG 93 = 1.168
    ProStaff 6.0 85 = 1.233
    LM Rad MP = 1.235
    FXP Rad OS, O3 White = 1.251
    LM Rad OS = 1.285
    FXP Rad MP = 1.320
    PD Roddick + = 1.361


    Would you care to check the PC600, LM mid, ect? :mrgreen:
     
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