There hasn't been many building reports lately.  I think everyone is flying except me.  Anyway, here is some progress I'm making.

The oil cooler inlet duct is made as close to what K&W prescribes as I could get it.  I tested it today with a borrowed static pressure air meter and a leaf blower.  I couldn't get a steady reading simply holding the probe out in front of the cooler, so I drilled a hole in a spray can cap and poked the probe through  it.  This captured the static pressure from a representative area and kept the probe tip at a given distance.  The very tip of the cooler measured around 0.39inH20 and the end closest to the tight curve was only 0.25 or so.  But that was only for an inch or two.  The center read a fairly steady 0.33 across the length, varying ±.02.  I think I'm going to put this one in the plane.

The water cooler is next.  The white tower is the mold I've been making for the inlet duct.  I laid out the K&W coordinates, and cut them out of doorskin plywood.  Then I slotted them to slip together.  Hot glued a cap on each end then filled the interior with foam.  Now I'm covering it with lightweight spackling to set the final dimensions.  I should be ready to do the lay up as soon as it cools off.

The final picture is the radiator I'll be using.  12.5x8.5x4.25.  A cap will cover the factory inlets, and I'll have to mount nipples on both sides.  There was a baffle on the inlet side that I had to drill through, but other than that this should be an excellent radiator for the Delta.  The flow was down the front right, up the back right, over and then down the left back, then up the left front.  After drilling the baffle and adding my own connectors, the flow will be down the front and up the back.  I was able to slide a piece of clothes hanger that measure .090 into the passage through the hole I drilled.  There are 23 sections with 5 passages in each, for a total area of at least 0.73in2.  My plan is for 3/4" hose, which only has an area of .44in2 at best.  Flow through the radiator should not be an issue.  An important point for an EWP installation.

-- This is by far the hardest lesson about freedom. It goes against
instinct, and morality, to just sit back and watch people make
mistakes. We want to help them, which means control them and their
decisions, but in doing so we actually hurt them (and ourselves)."

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