> ----- Original Message ----- > From: "David Poirier" <dapoir...@cfl.rr.com> > > > > I see. You can't fit a two inch round connection to the rear of the > plenum, > > right? > > > > A two inch scat has 3.1416 square inch surface area. A 1.5 by 4 inch > > rectangular opening would be 6 square inches and fit in a narrow space. > > Looking at the cooler housing, you have the technique to me a custom > shape > > to fit. Funneled down to a 2" scat, it may fit better. No holes in the > cowl > > and a direct feed to the cooler. A 3" scat has almost 7.25" of surface > area. > > 1.5 by 4 could feed it well as well. I'm just trying to open up the box a > > little and prod your thoughts. I feel there must be a way to get it clean > > from the plenum with no cowl scoop. Have you considered the dust kicked up > > and into a scoop?
I did consider doing an rectangular to round outlet out of the back panel of my air baffles. However, with the very low cowl and very low aluminum rear baffle, there simply was no room to install a rectangular one. Now, if I were to remove that baffle and re-do it, I could make it work, even with a round 2" or 2" tube. You see, I could make the aluminum wall taller and make the rubber baffle shorter. Believe me, I thought of 99% of the alternatives to get air to my oil cooler. And as for the dust issue, I thought of that one also, but, did you think that if you simply put it on the back of the air baffles, you will also be sending any picked up dust and dirt to the oil cooler. That is unless you filter the air somehow. I do not see how a two inch inlet will put more dust and dirt into the oil cooler than having the scat tube hooked to the back air baffle would, even if I do put a scoop on it. Besides, my KR is a hard surface runway bird only, so hopefully that won't be too much of an issue. I will keep a close watch on that one though. My left wing is almost done. Remaining to do is cut out aileron, put on landing light lens, finish wing tip and prime it for painting. Fuselage: the only big thing that is left to be done, is install a speed brake and make a new starter mount. Mark Jones (N886MJ) Wales, WI USA E-mail me at flyk...@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html
