I think you're confused.
Power to weight ratio can and will be anything, as you showed in your
example.
What was being asked/suggested is a formula or statement that says "for
every ____ pounds removed or added it is the equivilent of 1 HP" (actually
should be lb/ft, as the "midget racer" expressed).
HP is what determines your speed, because HP is an expression of
time/distance work. It makes no difference how heavy your car is if you are
trying to make it go 120 MPH (well, actually you do increase the rolling
resistance very slightly), the only forces you have to overcome are wind
resistance and rolling resistance.
However, Torque, expressed as lbs/ft, describes a weight/distance work, and
will therefore determine how _long_ it will take you to get to 120 MPH, or
how fast you can go up a hill (adding the overcoming of gravity to the
wind/rolling resistance force).
<dnw>
1972 Midget
1998 Safari
1999 9-3
1964 (Me)
----- Original Message -----
From "Steven Fooshee" <sfooshee at clubrx.org>
> That's a sloppy version of the power to weight ratio. Bhp:lb will come
> out to be about 60:1600 on a stock-ish MK-IV Sprite, so 26.6667 pounds
> is worth exactly one bhp. On a new Z-06, it's a lot closer to 1:10 power
> to weight ratio.
> --
> ~
> '94 FZR-600: Wants a brain.
> '90 GS-500E: Wants a heart.
> 'LXIX Sprite: Wants courage.
> '93 B-2200: Wants to go home.
> '87 RX-7 TII: Please ignore what's behind the curtain.
> Getting caught is the mother of invention.
/// unsubscribe/change address requests to majordomo@autox.team.net or try
/// Archives at http://www.team.net/cgi-bin/wilma/spridgets
|