>
     >> Paul here is a pic of my polished rotor housing. Now I have to do
     >> the other one.
     >>
     >> Tony
     >>
     >> Did you do that by hand or is there some sort of magic stuff
     >> you can get that makes aluminum look like this?
     >> --
     >> Paul Lamar ...No rotor no motor.
     >
     >
     > Hi Paul,
     >
     >
     > None of Tony's polished housing picts came through for me. Could
    you send
     > again? BTW I just read about 28 pages of posts about building
    P-ports on
     > the RX-7 site along with pictures and comments. I suggest you
    refer people
     > to read it as it will save you and them countless hours of
    speculating about
     > the what ifs:)
     >
     >
     > DougFir
     >
     > Some OS's need the dashes in the file names.
     > Your attachment had no extension so...what is it. Is it
     > a URL?
     >
     > Are you using your Mac Doug?
     >
     > P-ports don't have a good rep on street cars because of the
     > low RPM stumble and relatively poor idle. Also most racers
     > are not specifically aware of the effect pipe length and diameter
     > has on torque peak and max HP. They tend to use pipes that are
     > too short and then complain about the lack of torque
     > at low RPM. There is a lot of urban myths out there on
     > P-ports. In fact some very famous rotary engine tuners have never
     > seen any of the many SAE papers Mazda published over the
     > years. I am sure they all have opinions however.
     >
     > How many people on here have Kenishi Yamamotos book
     > "Rotary Engine"? Raise your hands :)
     >
     > Paul Lamar ...No rotor no motor.


    Paul,

    Yes on the Mac. If you wade through all of the posts you will find
    several
    by a guy with the handle Kenku. Incentially this translates to
    research in
    Japanese. He specifically mentioned a SAE paper on P-port sizes and
    timing
    from Mazda printed in 1990. Also in later post there were references
    about
    pipe length effect. My feeling is that the rotary crowd has evolved
    a lot
    in the last 5 years. Lots of myths have been put to rest.

    Doug.

    I may have that 1990 paper. Perhaps they are reading this newsletter
    started in April 1998 :)

    Paul Lamar
    ------------------------------------------------------

    Paul,

    A couple of questions on your references.

    Compact Heat Exchangers, kays, 2nd ed 1964.  How current is the
    information?  Are the later editions reprints or updated?

    Rotary Engine, Yamamoto. Same questions.

    Finally, how difficult is the material presented for a non M.E.to
    comprehend?
Joel Mayhall


The physics has not changed. Only now are people starting
to implement the K&L discoveries. Here is the epitome of
the K&L principle.

It is not real hard. You have to read it over some times.
The main problem is the nomenclature is not standardized
in the case of aerodynamics. What Kucehman & Weber call a cooling
block Kays and London call it a heat exchanger. K&L call something
a header while K&M call it a plenum or diffuser. I can help if
you need it.