Dick Gregory wrote:

What I was concerned about with the downdraft was that the nosewheel would
kick up a pebble and aim it directly at the input scoop. With the radiator
unprotected would it be susceptible to damage?

You guys are giving me lots of good information. I have been watching this
list now for about 4 months and have lots of the messages and pictures saved
on my hard drive.

Perry, could your 3X5 inlet be too small for the oil cooler? It seems like a
rule of thumb I have seen states 25 percent of the radiator area which I
think would be more like 25 square inches. Based on your experience I think
I will make mine about 4X6.

I'm also fiddling with the idea to put a fan in a short parallel duct with a
swinging door. When on the ground the fan would run and keep the door open
and supply air to the cooler. In the air the fan would be shut off and the
air from the inlet would keep the door closed.

I hope this doesn't get reformatted too badly. This is a top view with the
front to the left. The fan branch would be inside the firewall line, inboard
from the main branch, and level with it.
          ___________
         /    fan >  \
   _____/   ______    \______
                  \
          door open\
   __________________________

Dick Gregory
LongEZ N613NC

 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org