I did not even mention in my last reply what the issue
really is with the mazda rotary factor. It is currently
engine displacement times 3 for the class it has to run in.
This does not represent how the engine really works. it
takes 3 rev to complete 1 cycle for 1 rotor face. Typical
there are 2 rotors. This gives you 2 firings per rev the
same as a 4 cylinder piston engine. Each rotor face is 654
cc in a mazda 13b for example. That means that it processes
in 2 revs 654 X 2 rotors X 2 revs=2616 cc of air and fuel.
Exactly the same as a 2616 cc piston engine. Currently this
engine has a rating of 1308 X 3=3924 cc. I suspect it had to
do with the 3 faces on the rotors so everyone said just make
it times 3 or that it looks like it ought to be X 3....This
does not seem fair and reasonable to me. SCCA and FIA both
use an engine displacement Factor of just over 2 to adjust
the size of engines built like this when comparing them to
piston engines. In essence treating them the same as every
other 4 stroke engine by sizing them according to how much
air and fuel can be processed in 2 revs.
I would appreciate your thoughts on this matter
Dave Dahlgren
Gary Allen wrote:
>
> I am not on the landspeed list but did know about the rule change suggestion
> from the rules meetings. It was rejected at the preliminary meeting because
> there was no data supporting the change. I am not sure where the request
> even came from and also not familiar with the current factor history or
> where it came from. Dan Warner is th best authority on the subject and its
> history.
>
> What is the issue / question? Gary Allen
> ----- Original Message -----
> From: "Dave Dahlgren" <ddahlgren@snet.net>
> To: <gallen@relia.net>
> Sent: Monday, December 18, 2000 1:33 PM
> Subject: mazda rotary engine factor
>
> > Wes Potter suggested i drop you a line about the current
> > dispalcement factor for Mazda Rotary engines.. Have you been
> > following the land=speed e-mail on this or do i need to
> > forward a bunch of it to you?
> > Dave Dahlgren
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