Figuring that the Grove gear is 16" from the top to the axle center and that the top will be about a half inch under the bottom of the center spar I am showing that I would get just a hair under 12" with the same prop and thrust line. That is figured with 1" of tire "squash" and zero flex on the gear legs. With the amount that I would expect the gear to flex at gross sitting on the ground I figure I will have at least 9". The next question is was the decision on the prop diameter because that was as big as you could get with your gear and still have adequate ground clearance but a bigger prop would have been better or was it because you decided that 52.5 is what would give you the best performance?
Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: krnet-bounces+brian.kraut=engalt....@mylist.net [mailto:krnet-bounces+brian.kraut=engalt....@mylist.net]On Behalf Of Mark Langford Sent: Monday, January 17, 2005 10:34 PM To: KRnet Subject: Re: KR> prop diameter Brian Kraut wrote: > I am about to order a set of Grove gear and I wanted to double check my prop > clearance first. What prop diameters are people using with the Corvair? I don't have Grove gear (just standard Diehl taildragger), but my prop is 52.5" in diameter and I have right at 7.75" with properly inflated tires and full fuel tanks, no pilot or passengers, airplane level. I'm not sure there's anybody with Grove gear running a Corvair yet, but somebody's welcome to prove me wrong. Just for reference sake, the lowest part of my stub wing's airfoil is 17" off the floor (17.25" to the lowest part of the main spar). My thrust line is 2.375" below the top of the top longerons. Wheels are Clevelands (not that it matters) with Lamb 11 x 4.00-5 tires. Maybe with a little extrapolation... Mark Langford, Huntsville, Alabama see KR2S project N56ML at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.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
