From: krnet-bounces@mylist.net To: John Bouyea Subject: KRnet Digest, Vol 346, Issue 21 Date: 7/9/2004 8:59:54 PM Send KRnet mailing list submissions to krnet@mylist.net To subscribe or unsubscribe via the World Wide Web, visit http://mylist.net/listinfo/krnet or, via email, send a message with subject or body 'help' to krnet-request@mylist.net You can reach the person managing the list at krnet-owner@mylist.net When replying, please edit your Subject line so it is more specific than "Re: Contents of KRnet digest..." Today's Topics: 1. wing tank volume, update (Mark Langford) 2. KR Paint job (Timothy Bellville) 3. Re: Gathering - only 76 days away. (Timothy Bellville) 4. Re: KR Paint job (Timothy Bellville) 5. Re: Gathering - only 76 days away. (Timothy Bellville) ---------------------------------------------------------------------- Message: 1 Date: Fri, 9 Jul 2004 22:06:24 -0500 From: "Mark Langford" Subject: KR> wing tank volume, update To: "KRnet" Message-ID: <013501c4662a$e30cc120$1202a8c0@basement> Content-Type: text/plain; charset="iso-8859-1" KRNetHeads, I've been testing my fuel system lately, and have come to the following conclusions. My main (right tank) holds exactly 8 gallons from full to empty (in flying attitude) and the left (aux) tank holds the same, for a total of 16 gallons. I have about .4 gallons of unusable fuel in each tank (not counted in the 16 gallons), and when you consider the 10% "air space" at the top of the tank, that's what my "19 gallon" fuel tanks became. The Facet fuel pump delivers .67 gallons per minute (40 gph) through the 3/8" line with no restriction (carburetor) on the end. Venting works great, as I emptied both tanks in 24 minutes with the caps sealed tightly. Not one drop leaked out from anywhere, including the vent line. The transfer pump is slightly slower since it uses a 5/16" line. I'm working on a simple 555 timer circuit that will run the transfer pump for 6 minutes, which will transfer half the aux tank to the main tank with one bump of the switch. It will be activated with an off/on/momentary switch so I can switch it off before the timer is finished if the tank runs dry (it's loud enough to hear while flying, I'll bet). You might notice (at http://home.hiwaay.net/~langford/wingtank.html ) that I left about 3" of wing tank volume "on the table" for no good reason by leaving a gap between wing tank and fuselage, so I could have easily gotten another 15% tank volume there, and if I'd used the AS5048 airfoil, I could have had another 20% on top of that, for a grand total of 22 gallons of useable fuel. Don't make the same mistake I did! When I originally designed these tanks I was going to use a VW engine which burns less fuel, and I didn't want to limit my gross weight by putting too much fuel in it. Now I'm running a thirstier (but more powerful) Corvair, and I know I'm going to set my gross weight higher than 980 pounds, so if I were going to do it again, I'd have every bit of that 22 gallons. 16 gallons will get me a "fer piece", even at the Corvair's max consumption of 6.5 gallons per hour, but especially if I throttle back to 5 gallons per hour or so. I think Steve Makish says his only burns 3.5 gallons per hour at what he calls "cruise" using the apparently efficient Ellison carburetor. I could still put in a small header tank, or another tank behind the seat, or even an aux tank that sits on the passenger seat and plumbs in with quick disconnects, put I probably won't bother. 2.5 hours in this plane is probably enough for me. In other news, I received my new Tiny Tach 4X (the X means it's filtered) and it seems to work fine on my Scirocco, so it ought to work on the Corvair as well. I can't test it on the plane until the Ellison comes in, which I've been waiting on for three weeks now, but probably still hasn't shipped. Believe it or not, I'm still finding wires that need to be connected to things like the flap motor, trim postion indicator, and that sort of thing, so I still have plenty to do. You know you're getting close when you order your tail numbers and start worrying about placards... Mark Langford, Huntsville, Alabama N56ML "at" hiwaay.net see KR2S project at http://home.hiwaay.net/~langford ------------------------------ Message: 2 Date: Fri, 9 Jul 2004 23:16:15 -0400 From: "Timothy Bellville" Subject: KR> KR Paint job To: "KRnet" Message-ID: <000901c4662c$4344e800$5c2b4b0c@HPHome> Content-Type: text/plain; charset="iso-8859-1" Hi Guys , just wanted to give an update on the painting of my KR. I decided to go with the white , and used a very good polyurathane enamal, with a HVPL gun. This time no runs or saggs, and very little difficulty geting it to look decent. I regret not being able to get the silver to look good but I am really happy with the way she looks now. The white does alot to hide imperfections, and the self leveling polyurathane sprays great . I will not be able to fly her to Airventure, as I will not have the 40 hrs flow off of her yet. But I am thinking of trailering her there. Tim KR2 N7038V ------------------------------ Message: 3 Date: Fri, 9 Jul 2004 23:17:55 -0400 From: "Timothy Bellville" Subject: Re: KR> Gathering - only 76 days away. To: "KRnet" Message-ID: <001101c4662c$7ea42fa0$5c2b4b0c@HPHome> Content-Type: text/plain; charset="iso-8859-1" Do I detect a Fellow Marine? ----- Original Message ----- From: "Dan Heath" To: Sent: Friday, July 09, 2004 10:31 PM Subject: Re: KR> Gathering - only 76 days away. > OOOOORRAAAAAAHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > > "There is a time for building and a time for flying, and the time for > building has long since expired." > > See N64KR at http://KR-Builder.org - Then click on the pics Daniel R. > Heath - Columbia, SC See you in Mt. Vernon - 2004 - KR Gathering > > _______________________________________ > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > ------------------------------ Message: 4 Date: Fri, 9 Jul 2004 23:45:35 -0400 From: "Timothy Bellville" Subject: KR> Re: KR Paint job To: "KRnet" Message-ID: <004101c46630$5bfe91d0$5c2b4b0c@HPHome> Content-Type: text/plain; charset="iso-8859-1" ----- Original Message ----- From: "Timothy Bellville" To: "KRnet" Sent: Friday, July 09, 2004 11:16 PM Subject: KR Paint job > > Hi Guys , just wanted to give an update on the painting of my KR. I > decided to go with the white , and used a very good polyurathane > enamal, with a HVPL gun. This time no runs or saggs, and very little > difficulty geting it to look decent. I regret not being able to get > the silver to look good but I am really happy > with the way she looks now. The white does alot to hide imperfections, > and the self leveling polyurathane sprays great . I will not be able > to fly her to Airventure, as I will not have the 40 hrs flow off of > her yet. But I am thinking of trailering her there. Tim > KR2 N7038V > ------------------------------ Message: 5 Date: Fri, 9 Jul 2004 23:45:55 -0400 From: "Timothy Bellville" Subject: Re: KR> Gathering - only 76 days away. To: "KRnet" Message-ID: <004701c46630$67e7e2d0$5c2b4b0c@HPHome> Content-Type: text/plain; charset="iso-8859-1" ----- Original Message ----- From: "Timothy Bellville" To: "KRnet" Sent: Friday, July 09, 2004 11:17 PM Subject: Re: KR> Gathering - only 76 days away. > Do I detect a Fellow Marine? > ----- Original Message ----- > From: "Dan Heath" > To: > Sent: Friday, July 09, 2004 10:31 PM > Subject: Re: KR> Gathering - only 76 days away. > > > > OOOOORRAAAAAAHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > > > > "There is a time for building and a time for flying, and the time > > for building has long since expired." > > > > See N64KR at http://KR-Builder.org - Then click on the pics Daniel > > R. Heath - Columbia, SC See you in Mt. Vernon - 2004 - KR Gathering > > > > _______________________________________ > > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > > please see other KRnet info at http://www.krnet.org/info.html > > ------------------------------ _______________________________________________ See KRnet list details at http://www.krnet.org/instructions.html End of KRnet Digest, Vol 346, Issue 21 ************************************** ================================== ABC Amber Outlook Converter v4.20 Trial version ==================================