KR>G load - tank question.
Does anyone know if the G-load ratings for the KR2s are what they are mainly because of the wing attach fittings? Are these the "weakest point"? I ask because I was wondering if the fuel tanks in the outboard wings would be easier on the wafs than that extra load in the fusealge area. As it is the wings holding up the fuselage. Safe Flying to ya! Steve McGee Endeavor Wi. Building a KR2S widened. lmc...@maqs.net
KR>G load - tank question.
>I ask because I was wondering if the fuel tanks in the outboard wings would be easier on the wafs than that extra load in the fusealge area. As it is the wings holding up the fuselage. >Steve McGee + That's the route I went because I knew my KR would be heavy and I wanted to take some of the load off the WAF's. You must also consider what moving the fuel rearward will do to your CG and also to the handling qualities when you move up to maybe 150 pounds from the fuselage and hang it out in the outer wing panels. I did more taxi text today with the tail up! If I can't get the inspector to schedule a visit real soon this thing is going to fly without me !! :-) Larry Flesner
KR>G load - tank question.
Speaking about outer wing tanks, whats the advantages and disadvantages of this. The plans say to put the fuel out there but I haven't seen any KR's with that setup. Justin N116JW www.geocities.com/attngrabber14/Home - Original Message - From: "larry flesner" To: "KRnet" Sent: Saturday, November 22, 2003 6:27 PM Subject: KR>G load - tank question. > >I ask because I was wondering if the fuel tanks in the outboard wings > would be easier on the wafs than that extra load in the fusealge area. As > it is the wings holding up the fuselage. > >Steve McGee > + > > That's the route I went because I knew my KR would be heavy and > I wanted to take some of the load off the WAF's. You must also > consider what moving the fuel rearward will do to your CG and > also to the handling qualities when you move up to maybe 150 > pounds from the fuselage and hang it out in the outer wing > panels. > > I did more taxi text today with the tail up! If I can't get the inspector > to schedule a visit real soon this thing is going to fly without me !! :-) > > Larry Flesner > > > > ___ > see KRnet list details at http://www.krnet.org/instructions.html >
KR>G load - tank question.
>Speaking about outer wing tanks, whats the advantages and disadvantages of >this. The plans say to put the fuel out there but I haven't seen any KR's >with that setup. >Justin +++ Justin, I don't recall the plans suggesting tanks in the "outer wing panels". I seem to recall they suggested additional fuel in the stub wings. It's been a while since I looked at that part of the plans so I'll let that stand. As to the advantages and disadvantages I'm assuming you mean eliminating the header tank and putting all fuel in the wings. If not you can pick and choose from the following. Advantages - It removes the fuel storage from the cockpit and places it the greatest possible distance from the occupants. - The weight being outboard of the WAF's helps to "unload" that part of the structure. - In my case the tanks are long and narrow and my CG shift from full fuel to no fuel is only 1 inch and it moves forward. Disadvantages - Your lose the reliability of gravity feed although I think a gravity feed system with a low head pressure is probably less tolerant of system problems. - The fuel system will be more complicated and weigh more as well as increasing the complexity of attaching the outer wing panels. - If not designed properly you could have a more aggravated failure mode. For example, if you were to put a pump in each wing and one failed and you had no way of pumping fuel from that wing, you'd probably want to land very soon. With 10 gallon tanks you could have one wing get up to 60 pounds heavier than the other if the flight is continued till near empty fuel. Your options here are to design those types of failure modes out of the system. In my case I have a simple ( I think ) system that allows me to pump from either/both wing tanks with either/both pumps. I also have backup power for the elect fuel pumps if I have to shut down my elect system. Remember what I said about more complexity and weight? There's no such thing as a FREE LUNCH. Only the builder can decide what they are the most comfortable with. If you're not going to be comfortable flying the airplane you're building you may as well shoot it now. :-) Larry Flesner
KR>G load - tank question.
Justin, What plans are you reading? Mine for the KR2 say to build the tank under the forward deck, if additional tanks are wanted put them in the stub wings. Rick Wilson. --- Justin wrote: > Speaking about outer wing tanks, whats the > advantages and disadvantages of > this. The plans say to put the fuel out there but I > haven't seen any KR's > with that setup. > > Justin > N116JW > www.geocities.com/attngrabber14/Home > - Original Message - > From: "larry flesner" > To: "KRnet" > Sent: Saturday, November 22, 2003 6:27 PM > Subject: KR>G load - tank question. > > > > >I ask because I was wondering if the fuel tanks > in the outboard wings > > would be easier on the wafs than that extra load > in the fusealge area. As > > it is the wings holding up the fuselage. > > >Steve McGee > > > + > > > > That's the route I went because I knew my KR would > be heavy and > > I wanted to take some of the load off the WAF's. > You must also > > consider what moving the fuel rearward will do to > your CG and > > also to the handling qualities when you move up to > maybe 150 > > pounds from the fuselage and hang it out in the > outer wing > > panels. > > > > I did more taxi text today with the tail up! If I > can't get the inspector > > to schedule a visit real soon this thing is going > to fly without me !! > :-) > > > > Larry Flesner > > > > > > > > ___ > > see KRnet list details at > http://www.krnet.org/instructions.html > > > > > ___ > see KRnet list details at http://www.krnet.org/instructions.html = Rick Wilson, Haleyville, Alabama KR2-0200A -99% rwdw2...@yahoo.com __ Do you Yahoo!? Free Pop-Up Blocker - Get it now http://companion.yahoo.com/
KR>G load - tank question.
Ric, My plans for the KR2S indicate outer wing section tanks for more fuel, and a small (5 gal.) header tank. Mine is all in a header tank (20 gals. ) built similar to NASCAR race car fuel tanks including explosafe foam. Bob Sauer From: resa...@cox.net - Original Message - From: "Rick Wilson" To: "KRnet" Sent: Sunday, November 23, 2003 9:27 AM Subject: Re: KR>G load - tank question. > Justin, What plans are you reading? Mine for the KR2 > say to build the tank under the forward deck, if > additional tanks are wanted put them in the stub > wings. Rick Wilson. > --- Justin wrote: > > Speaking about outer wing tanks, whats the > > advantages and disadvantages of > > this. The plans say to put the fuel out there but I > > haven't seen any KR's > > with that setup. > > > > Justin > > N116JW > > www.geocities.com/attngrabber14/Home > > - Original Message ----- > > From: "larry flesner" > > To: "KRnet" > > Sent: Saturday, November 22, 2003 6:27 PM > > Subject: KR>G load - tank question. > > > > > > > >I ask because I was wondering if the fuel tanks > > in the outboard wings > > > would be easier on the wafs than that extra load > > in the fusealge area. As > > > it is the wings holding up the fuselage. > > > >Steve McGee > > > > > > + > > > > > > That's the route I went because I knew my KR would > > be heavy and > > > I wanted to take some of the load off the WAF's. > > You must also > > > consider what moving the fuel rearward will do to > > your CG and > > > also to the handling qualities when you move up to > > maybe 150 > > > pounds from the fuselage and hang it out in the > > outer wing > > > panels. > > > > > > I did more taxi text today with the tail up! If I > > can't get the inspector > > > to schedule a visit real soon this thing is going > > to fly without me !! > > :-) > > > > > > Larry Flesner > > > > > > > > > > > > ___ > > > see KRnet list details at > > http://www.krnet.org/instructions.html > > > > > > > > > ___ > > see KRnet list details at > http://www.krnet.org/instructions.html > > > = > Rick Wilson, Haleyville, Alabama KR2-0200A -99% rwdw2...@yahoo.com > > > > __ > Do you Yahoo!? > Free Pop-Up Blocker - Get it now > http://companion.yahoo.com/ > > ___ > see KRnet list details at http://www.krnet.org/instructions.html >
KR>G load - tank question.
Yes, Im building the KR2S and it says just like Bob said. For my fuel setup im thinking something along the lines like a Aircoupe. I want both wing tanks R & L and a small 5 Gallon header tank. I want the Engine driven pump to pump into the header tank constantly and overflow back into the selected tank. Of course I would have an electric fuel pump as back-up. My plan of thought is with that 5 gallon header tank I will be able to keep that full all the time and for whatever reason I run out of gas in the wing tanks I have my VFR reserve already met with that header-tank. Any thoughts, comets,suggestions are welcome, of course I have a long time before my fuel system comes along. Justin N116JW www.geocities.com/attngrabber14/Home - Original Message - From: "Bob Sauer" To: "KRnet" Sent: Sunday, November 23, 2003 11:19 AM Subject: Re: KR>G load - tank question. > Ric, > > My plans for the KR2S indicate outer wing section tanks for more fuel, and a > small (5 gal.) header tank. Mine is all in a header tank (20 gals. ) built > similar to NASCAR race car fuel tanks including explosafe foam. > > Bob Sauer > From: resa...@cox.net > - Original Message - > From: "Rick Wilson" > To: "KRnet" > Sent: Sunday, November 23, 2003 9:27 AM > Subject: Re: KR>G load - tank question. > > > > Justin, What plans are you reading? Mine for the KR2 > > say to build the tank under the forward deck, if > > additional tanks are wanted put them in the stub > > wings. Rick Wilson. > > --- Justin wrote: > > > Speaking about outer wing tanks, whats the > > > advantages and disadvantages of > > > this. The plans say to put the fuel out there but I > > > haven't seen any KR's > > > with that setup. > > > > > > Justin > > > N116JW > > > www.geocities.com/attngrabber14/Home > > > - Original Message - > > > From: "larry flesner" > > > To: "KRnet" > > > Sent: Saturday, November 22, 2003 6:27 PM > > > Subject: KR>G load - tank question. > > > > > > > > > > >I ask because I was wondering if the fuel tanks > > > in the outboard wings > > > > would be easier on the wafs than that extra load > > > in the fusealge area. As > > > > it is the wings holding up the fuselage. > > > > >Steve McGee > > > > > > > > > + > > > > > > > > That's the route I went because I knew my KR would > > > be heavy and > > > > I wanted to take some of the load off the WAF's. > > > You must also > > > > consider what moving the fuel rearward will do to > > > your CG and > > > > also to the handling qualities when you move up to > > > maybe 150 > > > > pounds from the fuselage and hang it out in the > > > outer wing > > > > panels. > > > > > > > > I did more taxi text today with the tail up! If I > > > can't get the inspector > > > > to schedule a visit real soon this thing is going > > > to fly without me !! > > > :-) > > > > > > > > Larry Flesner > > > > > > > > > > > > > > > > ___ > > > > see KRnet list details at > > > http://www.krnet.org/instructions.html > > > > > > > > > > > > > ___ > > > see KRnet list details at > > http://www.krnet.org/instructions.html > > > > > > = > > Rick Wilson, Haleyville, Alabama KR2-0200A -99% rwdw2...@yahoo.com > > > > > > > > __ > > Do you Yahoo!? > > Free Pop-Up Blocker - Get it now > > http://companion.yahoo.com/ > > > > ___ > > see KRnet list details at http://www.krnet.org/instructions.html > > > > > ___ > see KRnet list details at http://www.krnet.org/instructions.html
KR>G load - tank question.
> >For my fuel setup im thinking something along the lines like a Aircoupe. I >want both wing tanks R & L and a small 5 Gallon header tank. I want the >Engine driven pump to pump into the header tank constantly and overflow back >into the selected tank. Of course I would have an electric fuel pump as >back-up. My plan of thought is with that 5 gallon header tank I will be able >to keep that full all the time and for whatever reason I run out of gas in >the wing tanks I have my VFR reserve already met with that header-tank. >Justin +++ Aircoupes have been flying since the 40's so who can argue. Just make sure your system does not allow you to accidently seclect the return to the full tank and pump one tank overboard. The only problem I've heard from "Coupe" drivers is when the pilot takes off with full fuel and doesn't realize his fuel pump isn't working and the engine quits about 45 minutes into the flight. I'm betting that would cause an immediate "deer in the headlights" look to appear on the pilots face. I'd suggest a "low fuel" warning system in the header tank that activates with about 4 gal remaining. Larry Flesner
KR>G load - tank question.
The Coupe doesn't have an electrical fuel pump to back up the engine driven fuel pump either (I dont think they do atleast). Besides, if your engine driven fuel pump quits your engine would most likly quit also wouldn't it? Justin N116JW www.geocities.com/attngrabber14/Home - Original Message - From: "larry flesner" To: "KRnet" Sent: Sunday, November 23, 2003 2:39 PM Subject: Re: KR>G load - tank question. > > > >For my fuel setup im thinking something along the lines like a Aircoupe. I > >want both wing tanks R & L and a small 5 Gallon header tank. I want the > >Engine driven pump to pump into the header tank constantly and overflow back > >into the selected tank. Of course I would have an electric fuel pump as > >back-up. My plan of thought is with that 5 gallon header tank I will be able > >to keep that full all the time and for whatever reason I run out of gas in > >the wing tanks I have my VFR reserve already met with that header-tank. > >Justin > +++ > > Aircoupes have been flying since the 40's so who can argue. > Just make sure your system does not allow you to accidently > seclect the return to the full tank and pump one tank overboard. > > The only problem I've heard from "Coupe" drivers is when the pilot > takes off with full fuel and doesn't realize his fuel pump isn't > working and the engine quits about 45 minutes into the flight. > I'm betting that would cause an immediate "deer in the headlights" > look to appear on the pilots face. I'd suggest a "low fuel" warning > system in the header tank that activates with about 4 gal remaining. > > > Larry Flesner > > > > > > ___ > see KRnet list details at http://www.krnet.org/instructions.html >
KR>G load - tank question.
i fly a ercoupe,,the header tank has a wire fuel lever guage in the middle of the windshield (the header gas cap) to show the amount of fuel left to go. it gravity feeds the carb,, not fed by the fuel pump! the pump only feeds contunisoly fuel to the header tank untill both wing tanks are empty, the 2 wing tanks are piped together. its a great system that is safe & works well steve jones,N212KR
KR>G load - tank question.
I read some of the concerns about added fuel. Someone stated(last week I think) added fuel adds to the time in the cockpit. (small cockpit). I have been looking at options about added fuel. I have a dated KR with retracts. No room in the stub wing for added tanks. I have been looking at options of adding tanks in the outer wings. CG is a big part of my concern. My idea is to take an Aluminum tube 5 -6 inces in diameter and fit it into the void on the leading edge of the wing. I would like sone feed back from the group. Lee Van Dyke Mesa AZ l...@vandyke5.com Subject: Re: KR>G load - tank question. > Justin, What plans are you reading? Mine for the KR2 > say to build the tank under the forward deck, if > additional tanks are wanted put them in the stub > wings. Rick Wilson. > --- Justin wrote: > > Speaking about outer wing tanks, whats the > > advantages and disadvantages of > > this. The plans say to put the fuel out there but I > > haven't seen any KR's > > with that setup. > > > > Justin > > N116JW > > Subject: KR>G load - tank question. > > > > > > > >I ask because I was wondering if the fuel tanks > > in the outboard wings > > > would be easier on the wafs than that extra load > > in the fusealge area. As > > > it is the wings holding up the fuselage. > > > >Steve McGee > > > > > > + > > > > > > That's the route I went because I knew my KR would > > be heavy and > > > I wanted to take some of the load off the WAF's. > > You must also > > > consider what moving the fuel rearward will do to > > your CG and > > > also to the handling qualities when you move up to > > maybe 150 > > > pounds from the fuselage and hang it out in the > > outer wing > > > panels. > > > > > > I did more taxi text today with the tail up! If I > > can't get the inspector > > > to schedule a visit real soon this thing is going > > to fly without me !! > > :-) > > > > > > Larry Flesner > > > > > > > > > > > > ___ > > > see KRnet list details at > > http://www.krnet.org/instructions.html > > > > > > > > > ___ > > see KRnet list details at > http://www.krnet.org/instructions.html > > > = > Rick Wilson, Haleyville, Alabama KR2-0200A -99% rwdw2...@yahoo.com > > > > __ > Do you Yahoo!? > Free Pop-Up Blocker - Get it now > http://companion.yahoo.com/ > > ___ > see KRnet list details at http://www.krnet.org/instructions.html > > >
KR>G load - tank question.
My Coupe has a visual float rod in the header cap. If the engine pump failed, I could see the rod go down very early in the flight and know that I was on gravity feed with only an hour to fly. The engine will not stop as gravity feed is used all the time. The engine pump simply feeds the header with the overflow returning to both tanks in the wings. G. Sprunger Ercoupe N26KT and KR2 under construction From: "Justin" Reply-To: KRnet To: "KRnet" Subject: Re: KR>G load - tank question. List-Post: krnet@list.krnet.org Date: Sun, 23 Nov 2003 18:16:20 -0600 The Coupe doesn't have an electrical fuel pump to back up the engine driven fuel pump either (I dont think they do atleast). Besides, if your engine driven fuel pump quits your engine would most likly quit also wouldn't it? Justin N116JW www.geocities.com/attngrabber14/Home - Original Message - From: "larry flesner" To: "KRnet" Sent: Sunday, November 23, 2003 2:39 PM Subject: Re: KR>G load - tank question. > > > >For my fuel setup im thinking something along the lines like a Aircoupe. I > >want both wing tanks R & L and a small 5 Gallon header tank. I want the > >Engine driven pump to pump into the header tank constantly and overflow back > >into the selected tank. Of course I would have an electric fuel pump as > >back-up. My plan of thought is with that 5 gallon header tank I will be able > >to keep that full all the time and for whatever reason I run out of gas in > >the wing tanks I have my VFR reserve already met with that header-tank. > >Justin > +++ > > Aircoupes have been flying since the 40's so who can argue. > Just make sure your system does not allow you to accidently > seclect the return to the full tank and pump one tank overboard. > > The only problem I've heard from "Coupe" drivers is when the pilot > takes off with full fuel and doesn't realize his fuel pump isn't > working and the engine quits about 45 minutes into the flight. > I'm betting that would cause an immediate "deer in the headlights" > look to appear on the pilots face. I'd suggest a "low fuel" warning > system in the header tank that activates with about 4 gal remaining. > > > Larry Flesner > > > > > > ___ > see KRnet list details at http://www.krnet.org/instructions.html > ___ see KRnet list details at http://www.krnet.org/instructions.html _ Has one of the new viruses infected your computer? Find out with a FREE online computer virus scan from McAfee. Take the FreeScan now! http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963
