Just from an old guy that might have had something to do with TR's in the
past, when you have a little enigne there is no torque so go for the
obvious.
----- Original Message -----
From: James Libecco <jfl@neoucom.edu>
To: Bob Lang <LANG@isis.mit.edu>; Patrick McMullen <pmcmull@ibm.net>
Cc: DAN DURYEE <DLDEAD@worldnet.att.net>; <fot@autox.team.net>
Sent: Tuesday, February 22, 2000 5:16 PM
Subject: Re: Spit Header;
> Hi, I thought I would take a second to welcome myself to the list. I am
Jim
> Libecco, living in Ohio with a slowly improving autox 76 spit 1500. I am
a
> medical student at NEOUCOM that tries his hardest to maintain contact with
> the outside world.
>
> The question. Maybe I am missing something in the math (that's why I am
in
> medicine and not engineering), but where does this formula take into
> consideration the diameter of the pipes? A Kirk header is considerably
> different in size than a Stahl header. Also, how do you tune a header
with
> this formula for torque vs. horsepower, or is there a corollary formula
that
> would accompany this?
>
> Thanks,
> jim libecco
> jfl@neoucom.edu
>
>
> ----- Original Message -----
> From: "Bob Lang" <LANG@isis.mit.edu>
> To: "Patrick McMullen" <pmcmull@ibm.net>
> Cc: "DAN DURYEE" <DLDEAD@worldnet.att.net>; <fot@autox.team.net>
> Sent: Tuesday, February 22, 2000 3:00 PM
> Subject: Re: Spit Header;
>
>
> > On Sat, 19 Feb 2000, Patrick McMullen wrote:
> >
> > > Dan,
> >
> > Folk...
> >
> > > I may be way off base here but this is a formula for just such a
> > > dimension:
> > >
> > > P=(AxSxD²)divided by(1400xd²)
> > >
> > > Where as:
> > >
> > > P= pipe length
> > > A= degrees duration
> > > S= stroke in inches
> > > D= diameter of piston in inches
> > > d= diameter of exhaust valve in inches
> > >
> > > This was given to me a number of years back by JK Jackson. I'm
> > > sorry I do not remember what the constant (1400) represented. The
> > > whole formula may be TR6 specific...but I don't think so.
> > > Somewhere I have a book with more math formulas then you can shake
> > > a stick at, all automotive related.
> > > Has anyone else seen this formula?
> >
> > Yes, I have. It used to be on the Temple of Triumph web site a year or
> > two ago...
> >
> > > Or did I just give away a
> > > "Super Secret" proprietory information tid bit (sorry JK!) only
> > > known to Irish rocket scientist!!! (Is there such a thing?)
> >
> > I believe 1400 is a constant for the speed of sound in feet per second,
> > but I could be wrong.
> >
> > > Patrick McMullen in NC (Yes I have a brother named Mike)
> >
> > Bob in Cambridge... Massachusetts. No, not that liberal arts school up
> > the creek!
> >
> > > I swear...NO whiskey was involved!
> >
> > Ummm - okay Pat. Whatever you say.
> >
> > later
>
> --------------------------------------------------------------------------
> -----
> > Bob Lang Room N42-140Q | This space for rent.
> > Consultant MIT Computer Services |
> > Voice: (617)253-7438 FAX: (617)258-9535 |
>
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> >
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