Jerry Hey wrote:
     >
     > Paul,  I have been trying to come to some finality on the radiator
     > plenum.   I reversed  your process and started out with physical model
     > of poster paper and plywood and then as I encountered problems, tried
     > to work it out with cad.  Anyway,  here is what I have come up with.
     > Please take it into consideration with the cowl designs.
     >
     >      The cowl should slope back from under the spinner to a point 5/8"
     > below the rear lower corner of the radiator header tank.  From there
     > the louvers take over and it will flat and horizontal back to the
     > firewall.  The flat bottom needs to be 14.5 inches wide to allow room
     > for the louvers.
     >
     > The photo was taken before I put the extension on the plenum to get it
     > out the front of the cowl. In the photo, the plywood represents the
     > radiator and the duct tape is the header tanks.  The plenum opening is
     > 48 sq in which expands to 71.5 sq. in.  before it enters the wedge
     > portion.   Jerry

     Don't need to do that. Keep a constant AREA duct up to the start of the core.

     Paul Lamar

Jerry,
Have you bought a spinner yet? I'm planning on a 16" spinner also, maybe from a mustang II, and was wondering about the price. Your radiator has the same dimensions and looks like your inlet duct is
similar to what I'm planning.

Brian Trubee

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