[Shotimes] Dyno charts

[Ron Porter]

On an absolute scale, no, peak torque is the best place to be, and is the
most efficient.

But, from a practical standpoint, peak HP is the 2nd best, as more can be
done with it. The bottom line is that what really matters is how much torque
gets to the driving wheel(s).

Take a "very" theoretical engine, with peak torque at 3,000 rpm, peak HP at
6,000 rpm. Through gearing, you can get the drive wheel(s) to go whatever
speed you want, but to achieve the same vehicle (wheel) speed, you can gear
the engine down more at peak HP, and in effect produce more torque at the
driving wheels.

(The above is probably is probably as clear as mud, but it makes to me in my
world!!).

Ron Porter

-----Original Message-----
From: shotimes-admin@autox.team.net
[mailto:shotimes-admin@autox.team.net]On Behalf Of Ron Childs
Sent: Friday, January 17, 2003 12:13 PM
To: jpotter8@bellsouth.net; BJamesjr@aol.com; shotimes@autox.team.net
Subject: Re: [Shotimes] Dyno charts


Your engine will be doing the most work (moving more pounds of car per unit
of time) at peak h.p.

-Ron



>From: "D Potter" <jpotter8@bellsouth.net>
>To: <BJamesjr@aol.com>, <shotimes@autox.team.net>
>Subject: Re: [Shotimes] Dyno charts
>Date: Fri, 17 Jan 2003 11:40:57 -0500
>
>You are going to get the most pull at peak torque, not peak hp.
>
>
>----- Original Message -----
>From: <BJamesjr@aol.com>
>To: <shotimes@autox.team.net>
>Sent: Thursday, January 16, 2003 12:56 PM
>Subject: Re: [Shotimes] Dyno charts
>
>
> > > Several cars now, and more to come have CVTs, Continuously Variable
> > > Transmissions. Although their behaviour depends on programming, the
>ideal
> > > for performance is to let the engine rev to peak hp and the tranny
>will
> > > adjust and accelerate the car. Wide torque band no longer
> > > needed.
> >
> > This concept has always interested me, although I'm still skeptical of
>the
>internal workings of the CVT's themselves.  The computer could track your
>throttle position and speed and determine from that if you were trying to
>maintain steady state speed or accellerate.  If you are trying to maintain
>steady state speed, the computer can calculate what rpm is most efficient
>for the engine in terms of fuel usage at that power level and tell the
>transmission to shift as required to put the engine at that power level.
>For accelleration it can do the same- determine what power level you want
>and what engine rpm is best for that level of power output.  At some point
>it would have to determine that the power output you want is beyond
>efficient operation and begin transitioning to higher rpm's, all the way up
>to eventually the rpm equating to peak horsepower at WOT.
> > _______________________________________________
> > Shotimes mailing list
> > Shotimes@autox.team.net
> > http://www.team.net/mailman/listinfo/shotimes
>_______________________________________________
>Shotimes mailing list
>Shotimes@autox.team.net
>http://www.team.net/mailman/listinfo/shotimes


_________________________________________________________________
The new MSN 8: smart spam protection and 2 months FREE*
http://join.msn.com/?page=features/junkmail
_______________________________________________
Shotimes mailing list
Shotimes@autox.team.net
http://www.team.net/mailman/listinfo/shotimes