Dang it, I hate it when that happens, Bruce is right, the rotor turns 1/3 as
fast as the eccentric shaft, so you get two firing pulses per rpm, the same
as a 4 cylinder....
----- Original Message -----
From: "Bruce Wentzel" <greendotracing@netzero.net>
To: "John Steczkowski" <jsteczkowski@austin.rr.com>; <autox@autox.team.net>
Sent: Saturday, August 12, 2000 3:56 AM
Subject: Re: RX7 displacement (was:Z06 Corvette and Nationals?)
> At first glance it would seem to be like a 6 cylinder, but it is
> actually like a 4 cylinder. Don't ask me to 'splain it. It just
> is. My evidence is that if you hook up an aftermarket tach, you
> set it on the 4 cylinder setting to get correct readings.
>
> Bruce Wentzel Green Dot Racing, Inc. Road Race & Solo II rentals
> BSP 71 Corvette LS6 - the original Greendot; ITA and ITS RX-7's
> Speedbleeders, $5.20, Super Siphon $8.95, credit cards now
> accepted at
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>
> ----- Original Message -----
> From: "John Steczkowski" <jsteczkowski@austin.rr.com>
> To: "Donn Sundeen" <dsundeen@mediaone.net>;
> <autox@autox.team.net>
> Sent: Friday, August 11, 2000 6:40 PM
> Subject: Re: RX7 displacement (was:Z06 Corvette and Nationals?)
>
>
> > Actually, you're mistaken, the sparkplug fires every 1/3
> rotation of the
> > rotor, but that's not the measure of rpm for a rotary engine.
> You count each
> > rotation of the eccentric shaft, the rotary equivalent of a
> crankshaft. So
> > you actually only get as many firing pulses out of a rotary as
> a 4 stroke 6
> > cylinder engine.
> >
> > There's a site on the web that has animation of it (anyone have
> a pointer, I
> > can't find it right now)
> >
> > John S.
> >
> > ----- Original Message -----
> > From: "Donn Sundeen" <dsundeen@mediaone.net>
> > To: <autox@autox.team.net>
> > Sent: Friday, August 11, 2000 3:20 PM
> > Subject: Re: RX7 displacement (was:Z06 Corvette and Nationals?)
> >
> >
> > > Jeff wrote
> > >
> > > > Lets not forget every chamber fires once per revolution not
> every other
> > > > revolution like a 4 stroke piston engine
> > > > So in reality it is like 654cc X 12 that's 7848cc
> regardless of turbo
> > > > charging that is one inefficient motor only putting out
> > > > 250hp from almost 8 liters.
> > > >
> > > > Jeff
> > >
> > > I'm thinking that stuffing 7848cc in such a small and light
> package is
> > > extreamly efficient
> > >
> > > Donn
> > >
> >
> >
>
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