Subject: RV-4
From: Rotary Engine
Date: 1/2/2008, 5:58 PM
To: AARotary Engine


    > Hello Paul
    >
    > If you have a drawing of a RV-4 with a turbo 13b stuffed inside the
    > cowl,
    > would you please be so kind as to publish it here for me? My primary
    > interest is where to put the radiator - I do not believe in aircon
    > cores -
    > in such a tight cowl. I would also like to have the throttle body in
    > the
    > R/H (as seen from the prop end) cheek. I have the engine, is between
    > projects, and lust after a -4.
    >
    > Thank you and regards,
    >
    > Erik Snyman
    > Messina
    > South Africa.
    >
    > You will have a tough time doing that with the stock cowl.
    > The turbo won't fit.
    >
    > Are you willing to change the cowl?
    >
    > IMHO you would be better off with a P-port.
    >
    > --
    > Paul Lamar ...No rotor no motor.
    >
    >
    > If you are putting a 13b into an RV-4, I'd recommend a few
   things- make
    > the firewall 1" taller, move the prop hub out 5-6 inches to
   44"-45" in
    > front of the firewall, and use a 16" diameter spinner. Then you will
    > have enough room to stuff the 13b in there. I am abandoning the
    > fiberglass cowl, and making an aluminum one. I should have it done by
    > the end of the month, I hope. This will be the forth (and last) cowl
    > that I will have made for this airplane. Brian Trubee



   Brian,

   Thank you for the advice. I take it you are refering to the standard
   cowl?

   Erik.

Eric,
I am talking about making an entirely new cowl from scratch using those
dimensions that I specified, and omitting the cowl cheeks. I'm putting
my radiator under the main spar like a P-51. I figure that if I use the
clean sheet aproach, I won't be forced into compromises.

Brian Trubee

How thick of a rad are you planning Brian?

Paul Lamar

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