30" Diehl gear legs. Larry and I have the only two sets. Jeff Scott
On Sun, 19 Jun 2005 18:24:38 -0400 "Brian Kraut" <brian.kr...@engalt.com> writes: > 68" diameter? What kind of gear legs do you have? > > 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 > Jeff Scott > Sent: Friday, June 17, 2005 4:54 PM > To: kr...@mylist.net > Subject: Re: KR> glide rato.. > > > > That's probably just the compression ratio. They typical Cont and > Lyc are > pretty low compression. The O-235 on my Tomahawk and O-200 on my KR > have > both been upgraded to high compression pistons. They are very stiff > to pull > against the compression. At tiny bump in the compression ratio > makes a huge > difference in the way it feels when you pull the prop through. I've > heard > that referred to as "the engine has good rubber". > > I would bet that the O-200 on my KR won't windmill at glide speeds, > even > with the 68" diameter prop that I use. > > Of course if you're referring to the bearings being tight, that's > an > assembly issue, but that would also show itself via oil pressure > and/or > metal in the oil filter/screen in very short order. > > Come back for the spam can guys: Tell them that theirs would be > tight too if > they had any compression. > > Jeff Scott > Los Alamos, NM > > -- "Al Friesen" <nesei...@telus.net> wrote: > All, > I have been told in the hangar group that my VW Revmaster is way too > tight. > All the conts and lyks are easier to turn over than my VW. Any come > backs > on these Spam can guys. ? > ----- Original Message ----- > From: "Golden, Kevin" <kevin.gol...@churchdwight.com> > To: "'KRnet'" <kr...@mylist.net> > Sent: Friday, June 17, 2005 7:15 AM > Subject: RE: KR> glide rato.. > > > >A windmilling prop does more than disturb air over the airframe. > A > > windmilling prop will cause a huge amount of drag that is NEAR > equal to > > the > > rotational disc of the prop. > > > > Not to worry. I haven't seen a VW or corvair windmill. Lycoming > and > > Continentals will. > > > > Kevin. > > > > > > > > -----Original Message----- > > From: Dennis Mingear [mailto:dennisming...@yahoo.com] > > Sent: Friday, June 17, 2005 9:02 AM > > To: KRnet > > Subject: Re: KR> glide rato.. > > > > If the prop stops in a horizontal position it will > > disturb the airflow over the wing, making it seem > > smaller than it actually is, this will reduce the > > planes L/D. > > > > If the prop stops vertically the airflow over the wing > > is not disturbed and you have more effective wing > > area, producing more lift, which improves the planes > > L/D. > > > > If the prop is windmilling it is intermittantly > > disturbing the airflow over the wing which is hurting > > the wings ability to produce lift and hurting the > > planes L/D. > > > > Denny ... > > > > --- "Kenneth B. Jones" <kenbjo...@cinci.rr.com> wrote: > > > >> Perhaps the stopped prop is less drag because it's > >> stalled. > >> > >> Below is data taken from my flight test. My idle > >> setting was about 800 to > >> 900 rpm, a little high, at the time. Speeds are > >> indicated knots. My plane > >> stalls at about 50 knots indicated so I didn't check > >> the glide below 60 kts. > >> Surely the ratio will start back the other way > >> before it stalls. I have a > >> KR-2 with Diehl wings, 3 blade Warp drive taper > >> blade 58" prop set at 19.5 > >> degrees at the tip, A65, empty weight is 623 lbs., > >> full fuel is 14 gal and I > >> weigh about 180. > >> > >> Glide > >> Speed Descent Distance Glide > >> kts ft/min NM/1000 ft. Ratio > >> 60 400 2.50 15.18 > >> 65 442.5 2.45 12.93 > >> 70 525 2.22 11.73 > >> 75 625 2.00 10.56 > >> 80 750 1.78 9.39 > >> 85 800 1.77 9.35 > >> 90 900 1.67 8.80 > >> 95 1100 1.44 7.60 > >> 100 1500 1.11 5.87 > >> > >> > >> BTW, Bill's 2.5 miles per 1000 ft altitude is a > >> glide ratio of 13.2 : 1 (if > >> I calculated correctly). > >> > >> Ken Jones, kenbjo...@cinci.rr.com > >> Sharonville, OH > >> N5834, aka The Porkopolis Flying Pig > >> > >> ----- Original Message ----- > >> From: "Barry Kruyssen" <k...@bigpond.com> > >> To: "KRnet" <kr...@mylist.net> > >> Sent: Thursday, June 16, 2005 6:31 PM > >> Subject: Re: KR> what a day./ glide rato.. > >> > >> > >> > > >> > ----- Original Message ----- From: larry flesner > >> I doubt if a stopped > >> > propeller is going to triple that number > >> > > >> > A stopped prop actually produces less drag, don't > >> know the reason but have > >> > tried it in self launch gliders (without > >> feathering the prop) both idling > >> > engine and stoped, there is noticeably less drag > >> when the prop was > >> > stopped. Also it is better for the prop to stop > >> vertically so any > >> > vortices from the prop don't upset the air flow > >> over the wing, so I'm told > >> > but I couldn't tell the difference :-) > >> > > >> > regards > >> > Barry Kruyssen > >> > >> > >> > >> > >> _______________________________________ > >> 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 > >> > > > > > > "I can train a monkey to wave an American flag. That does not make > the > > monkey patriotic." > > > > Scott Ritter > > > > __________________________________________________ > > Do You Yahoo!? > > Tired of spam? Yahoo! Mail has the best spam protection around > > http://mail.yahoo.com > > > > _______________________________________ > > 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 > > *The information contained in this message may be confidential > and/or > > subject to legal privilege, and is for the use of the intended > addressee > > only. Any unauthorized use, dissemination or copying of the > information > > in this message is strictly prohibited. If you have received this > message > > in error, please notify the sender immediately and delete this > message.* > > > > > > > > _______________________________________ > > 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 > > > > > > -- > > No virus found in this incoming message. > > Checked by AVG Anti-Virus. > > Version: 7.0.323 / Virus Database: 267.7.8/22 - Release Date: > 6/17/2005 > > > > > > > _______________________________________ > 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 > > > > _______________________________________ > 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 > >
