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    599gtb torque calculation vs 997 turbo with boost

    I did a little math crunching and fizics.

    Here is a little intro.

    When u compare 2 cars u cant simply say mine has 700nm and yours has 500 yours is worse, The important info here i the RPM. the torque figure is the power available at a certain RPM. But when 2 cars have diferent maximum RPM speeds they have differend transmision ratios, and so the power to the wheils cant be compared directly.

    To compare them u have to simulate the higher reving engine in the torque range of the lower reving engine.

    how do u do this.

    997 turbo has
    1950-5000 Rpm 627Nm 680 with overbust
    maxim Hp is at 6000 rpm whitch is 562Nm

    the 599GTB has
    2000-6000 623Nm
    and maximum Hp is at 7600 Rpm whitch is 573Nm

    to compare them u multiply the revs*(6000/7600)
    and u get for 2000-6000 = 1580-4750

    and the torque gats multiplyed by (7600/6000)
    for 623 u get 790Nm

    In other words if u put a small transmision with the ratio of (6000/7600) the Rpm drop from 7600 to 6000 and the torque gets multiplied by (7600/6000)

    finaly 997 turbo
    623Nm from 1950-5000
    562Nm at 6000~480Hp
    599Gtb
    790Nm from 1580-4750
    725Nm at 6000~620Hp

    Re: 599gtb torque calculation vs 997 turbo with boost

    The principal is that when u use gears to slow downd the RPM u increase the torque, So the HP stays the same.

    Power = Torque * RPM * K

    where k is a constant.
    if u reduce the rpm by gears for a certain ratio u will increase the torque for the same ratio so the Power stays the same

    Re: 599gtb torque calculation vs 997 turbo with boost

    Quote:
    arakis said:
    The principal is that when u use gears to slow downd the RPM u increase the torque, So the HP stays the same.

    Power = Torque * RPM * K

    where k is a constant.
    if u reduce the rpm by gears for a certain ratio u will increase the torque for the same ratio so the Power stays the same



    Power = Torque × RPM / 7023,5

    Re: 599gtb torque calculation vs 997 turbo with boost

    Quote:
    arakis said:
    I did a little math crunching and fizics.

    Here is a little intro.

    When u compare 2 cars u cant simply say mine has 700nm and yours has 500 yours is worse, The important info here i the RPM. the torque figure is the power available at a certain RPM. But when 2 cars have diferent maximum RPM speeds they have differend transmision ratios, and so the power to the wheils cant be compared directly.

    To compare them u have to simulate the higher reving engine in the torque range of the lower reving engine.

    how do u do this.

    997 turbo has
    1950-5000 Rpm 627Nm 680 with overbust
    maxim Hp is at 6000 rpm whitch is 562Nm

    the 599GTB has
    2000-6000 623Nm
    and maximum Hp is at 7600 Rpm whitch is 573Nm

    to compare them u multiply the revs*(6000/7600)
    and u get for 2000-6000 = 1580-4750

    and the torque gats multiplyed by (7600/6000)
    for 623 u get 790Nm

    In other words if u put a small transmision with the ratio of (6000/7600) the Rpm drop from 7600 to 6000 and the torque gets multiplied by (7600/6000)

    finaly 997 turbo
    623Nm from 1950-5000
    562Nm at 6000~480Hp
    599Gtb
    790Nm from 1580-4750
    725Nm at 6000~620Hp



    The 620 is going to be a beast

    Re: 599gtb torque calculation vs 997 turbo with boost

    Quote:
    Crash said:
    Quote:
    arakis said:
    The principal is that when u use gears to slow downd the RPM u increase the torque, So the HP stays the same.

    Power = Torque * RPM * K

    where k is a constant.
    if u reduce the rpm by gears for a certain ratio u will increase the torque for the same ratio so the Power stays the same



    Power = Torque × RPM / 7023,5



    exacly Power = Torque *(1/7023.5)
    K=1/7023.5

     
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