He's right about not to far. But if you don't drop them a couple of inches it will burn paint and blow black on the belly. I had mine come out at the back of the cowl at an angle. Then I cut the exhaust so it would blow towards the back
----- Original Message ----- From: "Donald Reid" <[email protected]> To: <[email protected]>; "KRnet" <[email protected]> Sent: Wednesday, January 26, 2005 6:59 PM Subject: Re: KR> Exhaust > At 04:10 PM 1/26/2005, you wrote: >>Are there any rules of thumb of scientific formulas that would determine >>the length that the exhaust tubes should extend below the belly of the >>airplane. > > If at all possible, the exhaust should not extend beyond the surface of > the > plane. Any protrusion will be a source of drag. > > > > Don Reid - donreid "at" peoplepc.com > Bumpass, Va > > Visit my web sites at: > > AeroFoil, a 2-D Airfoil Design And Analysis Computer Program: > http://aerofoilengineering.com > > KR2XL construction: http://aerofoilengineering.com/KR/KR2XL.htm > Aviation Surplus: http://aerofoilengineering.com/PartsListing/Airparts.htm > EAA Chapter 231: http://eaa231.org > Ultralights: http://usua250.org > VA EAA State Fly-in: http://vaeaa.org > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to [email protected] > please see other KRnet info at http://www.krnet.org/info.html >

