I agree with Colin that streamlining your strobe would help. I think you could do an easy experiment by carving a tail for the back of it that comes to a point that will give the whole assembly an airfoil shape. It is much more important to bring the air flow smoothly back together off of the sides in the back of the light instead of in front of it. I would just leave the round shape on the front for now. Carve the block and just stick it on with double faced tape for now.
I have been looking at the pictures on your web site and I don't really see any other major drag producers although I would either shorten the exhast, or even better, bend them back and experiment with nozzles for jet thrust. Again, see Speed With Economy. Surprisingly, something round like your exhaust and the nose gear tube and the strobe light really have a lot of drag. I have an aerodynamics book that gives scale drawings of an airfoil shape, a square shape, and a rectangular shape. The drawings are of the three objects that have equal drag. It is very surprising to see them drawn in proportion like that. The airfoil shape is huge compared to the round and rectangular shape. What is even more surprising is that the round shape is only slightly bigger than the rectangular shape of the same drag. It makes it very apparent why people spend many thousands of dollars more for streamlined flying wires on biplanes instead of just using round one. It would also be interresting to try some rounded stabilizer and rudder tips. You should be able to do some temporary ones to stick on without too much trouble. You could also play with different wing tip designs if you are so inclined. If I had my airpark house with the plane right next to me every night instead of having to run to the airport and having to work out of my truck I would be experimenting with something else every day. One of these days. Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of Mark Jones Sent: Wednesday, June 21, 2006 12:41 PM To: KRnet Subject: RE: KR>need for speed I have a full set of wheel pants and fairings which I will be installing soon. I was just kidding about changing engines to an 0-360. Right now, there is no way I would give up the Corvair. My plane is about as slick as owl shit and wheel pants are about the only thing that will make it any slicker. I still think I need a higher pitched prop. -----Original Message----- From: krnet-bounces+flykr2s=wi.rr....@mylist.net [mailto:krnet-bounces+flykr2s=wi.rr....@mylist.net]On Behalf Of Steve Glover Sent: Wednesday, June 21, 2006 8:32 AM To: 'KRnet' Subject: RE: KR> KR Net -----Original Message----- If you go the PR type I wouldn't expect an 8 to 10 knot increase in speed. That comes from a design with a lot more HP designed to cruise at a lot higher speed. I would however expect 5. END I picked up about 12 MPH with gear leg fairings over Diehl gear and wheel pants on 2180 powered KR-2... Steve Glover KR-2 N902G AJO, Ca <kr...@cox.net> _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
