land-speed
[Top] [All Lists]

Re: Two strokes

To: Dan Warner <dwarner@electrorent.com>
Subject: Re: Two strokes
From: Dave Dahlgren <ddahlgren@snet.net>
Date: Sat, 06 Jan 2001 13:57:17 -0500
I would be more than glad to..If you have a comteder in mind
I am up for it.
Dave

Dan Warner wrote:
> 
> John, list,
> 
> Bob Norwood, Tom Stephens driving, set  two H class records at Speedweek
> 2000.
> 
> H/BGT @ 197 & H/BMS @ 205 - I'm not too sure the roarty guys will want to
> race against those records either.
> 
> Dan W
> 
> ----- Original Message -----
> From: John Beckett <landspeedracer@email.msn.com>
> To: Richard Fox <v4gr@rcn.com>; <land-speed@autox.team.net>
> Sent: Saturday, January 06, 2001 5:58 AM
> Subject: Re: Two strokes
> 
> >     Rich
> >
> >     Sorry, but that doesn't make any sense to me. On the one hand your
> > saying we run 2-cycles heads up no factors and that's OK, but on the other
> > hand you want to factor rotaries times three!! I guess I'm not be the
> > sharpest tool in the
> > shed so I gotta ask why?
> >
> >     If I understand Mazda correctly and you measure swept volume as you
> > suggested you come up with 1308cc for the current complete two rotor
> engine
> > not 3924cc. That's the equivalent of taking a 500cc 2 stroke and making it
> > run with 1,500cc 4 strokes. We don't do that to two strokes, so why do we
> do
> > it to Rotaries?
> >
> >     So lets not factor a rotary at all. No special class, no factors, just
> > heads up racing. Of course than the H class guys would hate it.
> >
> >     Undoubtedly this discussion will go on until 2002 rules are adopted.
> >
> >     John Beckett
> >
> >
> >         ----- Original Message -----
> > From: "Richard Fox" <v4gr@rcn.com>
> > To: <land-speed@autox.team.net>
> > Sent: Friday, January 05, 2001 5:32 PM
> > Subject: Fw: Two strokes
> >
> >
> > > -----Original Message-----
> > > From: Richard Fox <v4gr@rcn.com>
> > >
> > > Date: Friday, January 05, 2001 12:17 PM
> > > Subject: Two strokes
> > >
> > >
> > > Dale; What I would like to know is where did the idea that two strokes
> are
> > > measured or classified differently than Four strokes come from. Its bore
> > and
> > > stroke and thats it. A 300 inch 2 stroke is an E motor same as a 300
> inch
> > 4
> > > stroke. Also, displacement is measured by comparing the volume of a
> > container
> > > (usually a cylinder but not always) that has at least one movable side,
> at
> > > it's greatest volume and its least volume. The difference is the
> > displacement.
> > > My Nissan V6 has three of these containers on each side. Since they are
> > all
> > > the same we measure one and multiply by 6. A two rotor Wankel has 3
> > cavities
> > > per rotor. If you take the difference between the volume of one cavity
> at
> > its
> > > greatest and its smallest, that will give you the displacement of that
> > cavity.
> > > If you multiply that times the number of cavities (X3 per rotor) you
> will
> > have
> > > the displacement of the engine. I have never heard and calculation that
> > > included number of revolutions of the output (crank in an Otto cycle)
> > shaft in
> > > the calculations. Except from Dave.        I do not believe Wankels are
> > > improperly classed.    Rich Fox

<Prev in Thread] Current Thread [Next in Thread>