Not true. Take a closer look.
>
> The Lemans engine generates 240 HP at 6000 RPM and ours is only
generating
> 226 HP at 6000 RPM. I expect a bit more when we get the EFI
working
> with the slide throttle due to the manifold pressure loss we are
> experiencing with the carb. I don't expect to EQUAL the Lemans
> engine precisely because our pipes ARE a bit smaller.
>
>
> Paul Lamar
It is VERY important to know what correction factors are being applied.
I would assume that the Mazdatrix data are corrected using the very old
method still favored in the automotive aftermarket community -- I think
the correction is to 60 degrees F and 0% relative humidity. The
correction factors that are more generally accepted by manufacturers
(as
driven by the SAE) are far less generous -- 77 degree F and 30% or more
relative humidity if I recall correctly. The difference in reported hp
based on the two correction factors can vary quite significantly. I
don't know what correction factors Mazda uses for racing engine hp.
Jon
Dave, what correction factors are we using?
Paul Lamar
Thank you Paul! That this configuration of p port runs very well is no
surprise. It has been done in street rods many times before this. But
at least we now know that THIS engine is capable of developing the
power and running well. Next we have to get back to fuel injection and
see how that compares and then to a runner configuration that will be
airworthy and fit inside a cowl. About that time we all should start
to get really excited. In the meantime, I appreciate Paul's efforts
and the knowledge we are gaining. This is good stuff that will have a
huge effect on the future of the aviation rotary. Jerry
I agree. It puts the 320 pound FWF 13B two rotor rotary in competition with
the low end six cylinder air cooled aircraft engines power to weight
ratio category that weigh 400 pounds up. That is only the basic AC engine
weight and not the the firewall forward weight. My guess is add at least
100 pounds to the air cooled aircraft engine firewall forward weight.
Paul Lamar
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