From: owner-krnet-l-digest@teleport.com[SMTP:owner-krnet-l-digest@teleport.com] Sent: Thursday, January 08, 1998 1:11 PM To: krnet-l-digest@teleport.com Subject: krnet-l-digest V2 #6 krnet-l-digest Thursday, January 8 1998 Volume 02 : Number 006 ---------------------------------------------------------------------- Date: Wed, 07 Jan 1998 13:27:23 -0500 From: Tom Andersen Subject: KR: Lighting Coil behind spinner Does anyone know of any kind of available lighting coil that can bolt on to the prop hub behind the spinner and provide a small charging current? I have an 1835cc VW that has the magneto-only mount in the rear, so there's no way to mount anything there without going to a Diehl case and new engine mount. I was hoping to power a hand-held radio and a transponder. Thanks! - -Tom in Orlando ------------------------------ Date: Wed, 7 Jan 1998 14:18:16 EST From: Willard561 Subject: Re: KR: Lighting Coil behind spinner Tom: I will have to check my KR news letter's ( they are all old) but Ken used one for a while which mounted on the magnets on the back of the prop hub and the coils to the case, The article gives manufacurer and part number Bill Higdon Willard 561 @aol.com ------------------------------ Date: Wed, 7 Jan 1998 15:04:59 -0600 From: "Mark Langford" Subject: KR: Re: Lighting Coil behind spinner Tom Andersen wrote: > Does anyone know of any kind of available lighting coil that can bolt on > to the prop hub behind the spinner and provide a small charging > current? Tom, Don Betchan has something like that on his KR. I think he said it was from an Onan industrial engine, or something like that. It puts out sufficient current tho run everything on his full electric plane. I'm sure he'd love to tell you about it. If you need it, email me and I'll find his number, or call information in Perry, OK. Mark Langford, Huntsville, AL email at langford@hiwaay.net KR2S project construction at http://fly.hiwaay.net/~langford ------------------------------ Date: Wed, 7 Jan 1998 15:43:43 EST From: BSHADR Subject: KR: Lighting Coil behind spinner In a message dated 98-01-07 14:36:05 EST, you write: <<...Lighting Coil behind spinner...>> Tom: To to Mark Lanford's webpage: http://fly.highwaay.net/~langford Scroll down to the 1997 KRKosh photos. About 1/2 way through to Don Betchan's engine photos. I think there was mention by Mark of a similar setup that Don had adapted. Don is a pretty clever guy. Look it over. Randy Stein BSHADR@aol.com Soviet Monica, CA ------------------------------ Date: Wed, 7 Jan 1998 16:14:16 EST From: Kr2dream Subject: KR: vacuum systems I have seen a number of KR-2S panel layouts using vacuum gyros which I believe are a good idea to have on the panel if the weight can be afforded. Vacuum pumps are heavy. Has anyone any experience using a venturi inside the aircraft fed by a NACA duct and a suitable ehaust port for the slip stream air? I see no reason why that wouldn't work well and also be quite light weight. Bob Lasecki KR-2S standard size with direct drive turbo soob power Chicago - almost 700 hours and still going! ------------------------------ Date: Wed, 7 Jan 1998 22:20:02 -0600 From: "Mark Langford" Subject: KR: Re: NLF Templates Ron Lee wrote: > I noticed four templates. Do you anticipate that four are needed to properly > use to cut out the foam and have a smoothly transitioning wing? I also > suspect > that at some point the cut out for the spars will have to be added. Ron, Actually, I used 10 templates. Two for each stubwing, and two for each wing. Six 48" chord, and two 30.somethings. Spray on 3-M contact adhesive to the back of each, and stick 'em to the aircraft gradeplywood. Cut along the outer lines with a jigsaw or bandsaw. I also added a parallel line offset to the inside .015", just in case you saw off the out line, you'll have a guide to smoothly fair back to the original line. And you can use it as a gauge to see how accurate your cut is. I guess you COULD say I used 16 templates, because to make my 3/8" thick wing skins, I used an "inverse" pair of OUTSIDE templates sectioned horizontally to carve the inside of the skins out of 2" foam planks. Hmmmmm....sounds like I'm doing this the hard way. Only 1500 hours more to go!!!!!!!!! Mark Langford, Huntsville, AL email at langford@hiwaay.net KR2S project construction at http://fly.hiwaay.net/~langford ------------------------------ Date: Wed, 07 Jan 1998 22:40:39 -0500 From: Dennis Ambrose Subject: Re: KR: Re: Should I Glass My Fuselage???? and Green Bay Packers Rule!!!! >the boat industry. Some habits are hard to break. My KR will be parked >outside in the weather. Which means that the wood will shrink and move >depending on the humidity and sun etc. With out the light weight glass Snip > The glass and epoxy adds NO strength, and the only advantage is >that your paint will last longer. Therefore, somewhat less maintainance >will need to be done. If my KR was going to be in a hanger or covered >some way.... >Marvin McCoy >Seattle, WA. North end of Boeing field >Mr.Marvin@worldnet.att.net Marvin: I was under the impression that a composite plane HAD to be hangered to keep the exposure to U.V. etc. to a minimum. Am I wrong in assuming this? Can I save about a thousand dollars a year by not having to aquire a hangar? Also while I'm taking up bandwidth... no one talks about the cold weather limitations of the KR2. Does anyone have any guidelines as to how cold is too cold for a KR2??? Regards Dennis (in Toronto) ------------------------------ Date: Wed, 07 Jan 1998 23:19:58 -0500 From: Dennis Ambrose Subject: Re: KR: N541RY Progress Update > My next obsticle[sp?] is the final fuel system routing. I have >originally installed two Facet fuel pumps under the sling seat which >feed filtered fuel from each wing tank up to a fuel selector in the >center of the panel. This was then going to feed the header tank and/ >or the engine. I'm not 100% happy with the plans solution as I am >using an Ellison and need 2-3psi or so at the carb, which means that >gravity feed may not work. > >I would be interested in links/photos of fuel schematics specificly >for the Ellison TBI which is recommended to have pressurized fuel. > >I am planning on doing a gravity feed test of the header tank, in my >case it only holds 5 gallons of reserve fuel, and the idea was >to use it as a reserve tank. I'm looking to follow the KISS principle >for my fuel system, as fuel problems are a significant contributor >to accident statistics. Ideas? > > -- Regards > Ross Ross: As I am only a KR "Buyer" and not a KR "Flyer" yet take this at face value only, please. My airplane had a Hapi 1835 engine, an Ellison T.B.I. and 1/4 fuel line GRAVITY FED ONLY from the header tank and the previous owner said he could not run it "flat out" without the boost pump on but it did O.K. at cruise. He reported that the plane had a habit of stumbling when the throttle was opened during touch and goes and that closing the throttle and opening it slowly usually cleared it up. Is it any wonder this plane met its demise when on a touch and go the engine stumbled not once but twice before he aborted the take off attempt and ran it off the asphalt and into the gravel and folded up the retracts?? Hence one $8500 discount to me! Since I don't plan to trash that $600 carb, I will be using it along with 3/8 line and a 1-3 p.s.i. fuel pump and a gravity capable check valve in paralell.That way if the pump did fail I could still cruise to an airport to land. Your results may vary. Hope this helps! Regards Dennis (in Toronto) ------------------------------ Date: Wed, 07 Jan 1998 19:49:08 -0800 From: Douglas Dorfmeier Subject: KR: KR2S Baggage I am hoping to add a baggage tube behind the seats to allow me to carry my golf clubs. The weight should be okay (25lbs) but I am sure if it would have to drastic an effect on my CG. Anyone have any thoughts on the feasiblity? ------------------------------ Date: Wed, 07 Jan 1998 22:48:53 -0600 From: brian whatcott Subject: Re: KR: KR2S Baggage At 19:49 1/7/98 -0800, Doug D wrote: >I am hoping to add a baggage tube behind the seats to allow me to carry >my golf clubs. The weight should be okay (25lbs) but I am sure if it >would have to drastic an effect on my CG. Anyone have any thoughts on >the feasiblity? > > Hmmm...let's take a look at you Doug: yep, looks like a slim 180 pounder. Then there's 25 pounds spread over 4 feet behind you. Ouch: that's like putting on 25 lbs and sliding the seat back (!) 3 inches or so. But hey: you were planning to putt (sorry) the clubs across the cabin, that's like sliding the seat back towards the aft suicide limit a mere 0.8 inch. And what is an aircraft meant for anyway? - carrying useful load. (But remember the moral tale of the pilot who went adrift when his magnetized clubs messed up his whiskey compass - ah, but you probably have a GPS?) Burbling gently in my corner, brian whatcott Altus OK ------------------------------ Date: Wed, 07 Jan 1998 20:57:51 -0800 From: Micheal Mims Subject: KR: Ellisons and fuel line (was N541RY Progress Update) At 11:19 PM 1/7/98 -0500, you wrote: > Ross: > As I am only a KR "Buyer" and not a KR "Flyer" yet take this at face value only, please. > > My airplane had a Hapi 1835 engine, an Ellison T.B.I. and 1/4 fuel line GRAVITY FED ONLY from the header tank and the previous owner said he could not run it "flat out" without the boost pump on............... There have been many documented cases of the Dragonfly guys having trouble with the Ellison and 1/4 inch lines, don't do it! You need a 3/8 line from the header tank to the carb if you want to run it on gravity alone! Otherwise you will need a pump to achieve optimum performance. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Micheal Mims Happy Holidays to Everyone! mailto:mikemims@pacbell.net http://home.pacbell.net/mikemims ------------------------------ Date: Wed, 7 Jan 1998 21:01:05 -0800 From: tomstokes1@juno.com (Wayland T. Stokes) Subject: Re: KR: Information wanted Brian my name is Tom Stokes, I live in Reno, NV, and I have a started KR2. In answer to your note. Tom in Reno NV On Fri, 02 Jan 98 22:45:17 GMT mathewrz@iafrica.com (Rob Matthews) writes: >On 4/1/98 3:35AM, in message <34b1e683.28284492@mail.busprod.com>, >Brian Bland > wrote: > >> Hello everyone! >> >> I am trying to get the info on the KRNet subscribers. If you could >> please e-mail me privately with your: >> >> Name >> Where you live >> What you are building or hoping to build >> >> >> I am going to put together info so that people can find out who's >> e-mail address goes with what name and where you're located..... >> >> Thanks, >> >> Brian J. Bland, PP, A&P >> Claremore, OK >> Building stretched and widened KR-2S >> >> KR-2SBuilder@bigfoot.com >> http://www.KR-2S.home.ml.org >> >Hi Brian >Name : Rob Matthews >Address : P.O. Box 157 > Mtunzini > 3867 > Natal > South Africa >Plane : KR 2 with 2100 S Revmaster, Tricycle landing gear, Revflow >Carb, +/- >80% complete. Ross has a picture of the plane at his disposal. >email : mathewrz@iafrica.com >Tel : 27 353 401439 >Fax : 27 353 401441 >Regards >-- >Rob Matthews Have a nice day >South Africa >email mathewrz@iafrica.com > > ------------------------------ Date: Wed, 07 Jan 1998 21:01:07 -0800 From: Micheal Mims Subject: Re: KR: KR2S Baggage At 10:48 PM 1/7/98 -0600, you wrote: >At 19:49 1/7/98 -0800, Doug D wrote: >>I am hoping to add a baggage tube behind the seats to allow me to carry >>my golf clubs. The weight should be okay (25lbs) but I am sure if it >>would have to drastic an effect on my CG. Anyone have any thoughts on >>the feasiblity? Its one of those things, you gots to go fly your KR and then add the weight to see if you like it (or can live with it) Its called the test phase! :o) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Micheal Mims Happy Holidays to Everyone! mailto:mikemims@pacbell.net http://home.pacbell.net/mikemims ------------------------------ Date: Thu, 08 Jan 1998 09:18:15 -0800 From: Tom Crawford Subject: Re: KR: Ellisons and fuel line (was N541RY Progress Update) Micheal Mims wrote: > > At 11:19 PM 1/7/98 -0500, you wrote: > > Ross: > > As I am only a KR "Buyer" and not a KR "Flyer" yet take this at face value > only, please. > > > > My airplane had a Hapi 1835 engine, an Ellison T.B.I. and 1/4 fuel line > GRAVITY FED ONLY from the header tank and the previous owner said he could > not run it "flat out" without the boost pump on............... > > There have been many documented cases of the Dragonfly guys having trouble > with the Ellison and 1/4 inch lines, don't do it! You need a 3/8 line from > the header tank to the carb if you want to run it on gravity alone! > Otherwise you will need a pump to achieve optimum performance. > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Micheal Mims > Happy Holidays to Everyone! > > mailto:mikemims@pacbell.net > http://home.pacbell.net/mikemims Mike, The problem here is that the EFS-2 (the one for the VW) has a 1\4" flare fitting at the carb. It is a fitting with a rubber seal on the distal end, therefore probably impossible to replace. I have never seen one, and beleive me, I looked. I think your options are: 1) Add some sort of 1\4 to 3\8 expansion fitting at the carb. 2) Use 3\8 line from the tank thru to the gascolator, then 1\4 to the carb. I went with #2 above. Less weight, and (someone more experienced with fluid dynamics feel free to jump in here) without a fuel pump, the 1\4" fitting on the end of a 3\8" hose will only let so much fluid pass for a given head level. Now when you turn that fuel pump on it is a different story- then your flow is limited by the diameter of the metering tube. Which by the way is a problem that I seem to be experiencing. After speaking to Ben Ellison recently, he thinks that this carb (EFS-2) is too small for a 2400cc VW. He said that he is coming out with a new model- EFS-3A in about a month that has a 3\8" flare at the carb and has a larger diameter metering tube. He said he would be happy to let me trade up for another $200.00... Let's see- then I will have an $800.00 carb. Needless to say, I am trying to do everything I can think of to increase flow with the setup I have. Anyone have any ideas? Tom Crawford tomc@afn.org Gainesville, FL N262TC ------------------------------ Date: Thu, 08 Jan 1998 07:20:31 -0600 From: Ed Janssen Subject: Re: KR: Ellisons and fuel line (was N541RY Progress Update) Sorry, Didn't catch who initially asked the question about fuel flow. Just a reminder that a fuel flow check should always be made on whatever fuel delivery system a builder comes up with. Although it's a very basic check, we still hear about a few people who fail to take this very important step and get in trouble, especially with a gravity-fed only system. If you didn't build it yourself, don't assume the fuel flow is OK. For example, if you figure that your VW gulps 4.5 gallons an hour, full throttle, then make sure that that is what your getting at the carb PLUS a generous margin at all fuel levels in the header tank. Ed Janssen At 08:57 PM 1/7/98 -0800, you wrote: >At 11:19 PM 1/7/98 -0500, you wrote: >> Ross: >> As I am only a KR "Buyer" and not a KR "Flyer" yet take this at face value >only, please. >> >> My airplane had a Hapi 1835 engine, an Ellison T.B.I. and 1/4 fuel line >GRAVITY FED ONLY from the header tank and the previous owner said he could >not run it "flat out" without the boost pump on............... > >There have been many documented cases of the Dragonfly guys having trouble >with the Ellison and 1/4 inch lines, don't do it! You need a 3/8 line from >the header tank to the carb if you want to run it on gravity alone! >Otherwise you will need a pump to achieve optimum performance. >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >Micheal Mims >Happy Holidays to Everyone! > >mailto:mikemims@pacbell.net >http://home.pacbell.net/mikemims > > ------------------------------ Date: Thu, 8 Jan 1998 09:40:45 EST From: EagleGator Subject: Re: KR: Ellisons and fuel line (was N541RY Progress Update) In a message dated 98-01-08 08:28:09 EST, you write: << if you figure that your VW gulps 4.5 gallons an hour, full throttle, then make sure that that is what your getting at the carb PLUS a generous margin at all fuel levels in the header tank. >> The recommended fuel flow rate for a gravity feed fuel system is 150% of the fuel consumption of the engine at full throttle. If you have a pressurized system, only 125% is recommended. As a general conservative rule, an aircraft engine burns about 0.55 pounds of fuel per hour per horsepower, so you can use the following formula to determine your minimum fuel flow rate for a gravity feed system: Engine horsepower x 0.55 x 1.5 = minimum flow rate For a 65 HP VW, this works out to 53.625 pounds per hour, or 8.9375 gallons per hour. That means that you should get at least 3 quarts of fuel through the system in 5 minutes. Although they are conservative (about 6 gallons per hour vs. the advertised 4.5), I'd recommend using these numbers unless you have used a flow rate monitor to determine the true fuel flow of your engine at full throttle. Cheers! Rick Junkin EagleGator@aol.com ------------------------------ Date: Thu, 8 Jan 1998 09:00:12 -0600 From: pierce@pat.lgb.cal.boeing.com (Cole Pierce) Subject: KR: Re: KR2S Baggage > >At 19:49 1/7/98 -0800, Doug D wrote: > >>I am hoping to add a baggage tube behind the seats to allow me to carry > >>my golf clubs. The weight should be okay (25lbs) but I am sure if it > >>would have to drastic an effect on my CG. Anyone have any thoughts on > >>the feasiblity? > > Its one of those things, you gots to go fly your KR and then add the weight > to see if you like it (or can live with it) Its called the test phase! :o) > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Micheal Mims > Happy Holidays to Everyone! Isn't this just a plain and simple weight and balance problem? Or is the c.g./m.a.c. of the KR too difficult to establish? - -gun one lurker ------------------------------ Date: Thu, 08 Jan 1998 07:13:37 -0800 From: Douglas Dorfmeier Subject: Re: KR: Re: KR2S Baggage Cole Pierce wrote: > > > >At 19:49 1/7/98 -0800, Doug D wrote: > > >>I am hoping to add a baggage tube behind the seats to allow me to carry > > >>my golf clubs. The weight should be okay (25lbs) but I am sure if it > > >>would have to drastic an effect on my CG. Anyone have any thoughts on > > >>the feasiblity? > > > > Its one of those things, you gots to go fly your KR and then add the weight > > to see if you like it (or can live with it) Its called the test phase! :o) > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Micheal Mims > > Happy Holidays to Everyone! > > Isn't this just a plain and simple weight and balance problem? Or is > the c.g./m.a.c. of the KR too difficult to establish? > > -gun one > lurker Yes, it is a weight and balance problem. My delima is at this point I have not yet purchased my kit, so I don't have the information to determine the balance part. Also, I would have to extend the baggage area behind the seat probably about 40 inches with a height and with of about 12". I am hoping that somebody out there has already tried something similar. ------------------------------ Date: Thu, 8 Jan 1998 10:49:30 EST From: LVav8r Subject: Re: KR: Re: KR2S Baggage In a message dated 98-01-08 10:22:02 EST, you write: << I am hoping to add a baggage tube behind the seats to allow me to carry > > >>my golf clubs. The weight should be okay (25lbs) but I am sure if it > > >>would have to drastic an effect on my CG. Anyone have any thoughts on > > >>the feasiblity? >> Strap the clubs into the passenger seat, unless you have to carry a passenger. In that case leave the clubs at home and rent them at the golf course! ; ) Tom Kilgore Las Vegas, NV LVav8r@aol.com http://members.aol.com/LVav8r/index.html KR-2S 2% complete __I__ _______( X )_______ o/ \o ------------------------------ Date: Thu, 08 Jan 1998 09:36:59 -0800 From: Micheal Mims Subject: Re: KR: Re: KR2S Baggage At 09:00 AM 1/8/98 -0600, you wrote: >> Its one of those things, you gots to go fly your KR and then add the weight >> to see if you like it (or can live with it) Its called the test phase! :o) >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> Micheal Mims >> Happy Holidays to Everyone! > > >Isn't this just a plain and simple weight and balance problem? Or is >the c.g./m.a.c. of the KR too difficult to establish? > >-gun one It should be but,... if your building a KR you better test fly every possible weight and balance / CG combination possible so you can come up with and establish your own personal aft CG limit. Please don't use the aft limit published in the plans. Read the NTSB reports and all the stall spin accidents should motivate you! NTSB reports at: http://home.pacbell.net/mikemims/crashes.html ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Micheal Mims Happy Holidays to all!!! mailto:mikemims@pacbell.net http://home.pacbell.net/mikemims ------------------------------ Date: Thu, 08 Jan 1998 11:55:30 -0800 From: Ross Youngblood Subject: Re: KR: Tail Wheel. KR2 616TJ wrote: > > Here I am shopping again. I currently have the RR design spring steel > tailwheel assembly but I have bought the "soft" wheel from Steve. I am > looking to replace the spring steel with a rod. At the TN gathering I noticed > the rod would lessen the tailwheel noise considerable and that Dan used to > sell the fiberglass rod. Question, is the rod actually 100% glass? If anyone > can tell me about the metal rod, ie. what are the figures for hardening and > retensiling let me know what you have done. > > Dana Overall > http:www.geocites.com/CapeCanaveral/Hangar/7085/ Dana, I have seen one other "rod" implementation used for a tailwheel spring. Norm Rosenau's Firebird (on my website), used a titanium rod for a tailwheel boom. Turns out having a local titanium factory locally helps get the stuff. I understand it is hard to machine though. -- Ross ------------------------------ Date: Thu, 08 Jan 1998 11:57:45 -0800 From: Ross Youngblood Subject: Re: KR: N541RY Progress Update brian whatcott wrote: > > At 01:02 1/4/98 -0800, Rossy wrote: > >Well Finally! > ... > > My next obstacle is the final fuel system routing. I have > >originally installed two Facet fuel pumps under the sling seat which > >feed filtered fuel from each wing tank up to a fuel selector in the > >center of the panel. This was then going to feed the header tank and/ > >or the engine. I'm not 100% happy with the plans solution as I am > >using an Ellison and need 2-3psi or so at the carb, which means that > >gravity feed may not work. > > > >I would be interested in links/photos of fuel schematics specifically > >for the Ellison TBI which is recommended to have pressurized fuel. > > > >I am planning on doing a gravity feed test of the header tank, in my > >case it only holds 5 gallons of reserve fuel, and the idea was > >to use it as a reserve tank. I'm looking to follow the KISS principle > >for my fuel system, as fuel problems are a significant contributor > >to accident statistics. Ideas? > > > > -- Regards > > Ross > > > Just a reminder - I think we worked this over a few months ago: > a vent facing into wind can build an appreciable head of pressure > at top speed - enough to hinder the fuel inlet from wing tanks. > The solution is straight-forward: vent the header and the other tanks > to the same source. > > Brian > brian whatcott > Altus OK Brian, Thanks, this is a good point. I have an into the wind vent for the header tank. Can this pressure be greater than what the fuel pump could overcome? Hmmm. Currently my plumbing is such that when the wing tanks are feeding, the header is isolated, but this could be a concern if I make a change. -- Ross ------------------------------ Date: Thu, 08 Jan 1998 12:10:22 -0800 From: Ross Youngblood Subject: Re: KR: Gluing Foam MikeT nyc wrote: > > The thing that bothers me about hot glue is that a hot day in the sun is > enough to soften it almost to chewing gum consistency. Does anyone know > whether it gets hot in the wing and whether weakening of these bonds after the > wing is built would make any difference? > > Among my favorite glues for household/home repair use are construction > adhesive, Pliobond and contact cement. Has anyone tried these? > > Mike Taglieri My assumption is that the glue bond is non critical. Once glassed top & bottom, the foam ribs and planks are not likely to go anywhere anyway. ------------------------------ Date: Thu, 08 Jan 1998 12:14:13 -0800 From: Ross Youngblood Subject: Re: KR: Ballistic chute questions??Pack wins Again!! XZOSTD1 wrote: > > I'am in the process of installing a BRS chute in my KR2S. > Does anyone have any suggestions on how to bury the halyards into the fuselage > sides? > Does anyone have a chute installed in their KR? Mr XZOSTD1, Could you tell us your name? I thought that BRS would work with you to come up with a design. The halyard location was one of the issues I thought would be difficult to resolve. I'm curious as to where you are attaching the chute. To the center spar(s)? I think I may just buy a chute for me for about 1K, instead. -- Ross ------------------------------ Date: Thu, 08 Jan 1998 12:16:59 -0800 From: Ross Youngblood Subject: Re: KR: Aft Horz. Spar Bulkhead Dimensions John Bouyea wrote: > > Help! Perhaps I'm missing this measurement in the plans, but I haven't > found the proper length of the Aft Horz. Spar Bulkhead. Can someone > provide this measurement? I believe I trusted that the large drawing was scaled properly, and proportionally scaled the dimensions using the drawing. > Also, would it be recommended to extend the "O" upright fuselage member > down to the lower longeron? (Is this just overkill?) > > I've also fit lower longeron doublers from station "N" back to the > sternpost. This added 56 grams of spruce... What was the motivation for this lower doubler addition? Is there somthing I didn't hear about? - -- Ross ------------------------------ Date: Thu, 08 Jan 1998 12:24:45 -0800 From: Ross Youngblood Subject: Re: KR: Headset mounting Rob Matthews wrote: > > Hi Ross and All KRnetters > > My monies worth would be to mount the plugs for the headsets in the back behind > ones head. I have noticed that it is a pain to get into an aircraft and have > wires infront of your legs and you got to try to move all the wires and > sometimes you tend to catch a wire by mistake and bang there goes your headset > on the floor etc. Can you imagine trying to get your headset off the floor in a > KR. I intend to install some sort of hanger that i can put my headsets onto > behind my head when i am finished and ready to get out of the aircraft. > This is my two cents worth. > Regards > -- > Rob Matthews Have a nice day > South Africa > email mathewrz@iafrica.com Rob, This is exactly what I decided to do. (mount the jacks behind the seat). Also, Norm Rosenau's Firebird has nifty hangars behind the pilots to hang the headsets on. Nifty. -- Ross ------------------------------ Date: Thu, 08 Jan 1998 12:43:00 -0800 From: Ross Youngblood Subject: Re: KR: Protecting Plans (Aft Horz. Spar Bulkhead Dimensions) Mike, I posted mine on the wall after I had layed out my fuselage sides. And yes my drawings are quite yellowed by now. I was considering getting them laminated or duplicated, but didn't even find out if this was possible or what it cost. I have them folded up in a drawer now. I haven't looked at them much since I routed the aileron and elevator cables. But after 10 years you can still read them. -- Ross MikeT nyc wrote: > > >> Help! Perhaps I'm missing this measurement in the plans, but I haven't > >> found the proper length of the Aft Horz. Spar Bulkhead. Can someone > >> provide this measurement? > > > >John, > > > >Like many of the dimensions in the plans, I had to scale that one off the > >drawing. I think it's shown going about 3/4 of the way down, and I made > >mine as wide as I could without it sticking out into the wind. I actually > >extended mine (and the verticals that it fastens to) all the way to the > >lower longeron too, but later figured out why it doesn't go all the way. > >There has to be some way to access the nuts that hold your tailwheel on. > >Fortunately this was before I glued it in, so I left a half moon shaped > >hole down there for swinging a ratchet. > > To understand this post I had to get out the drawings, which usually sit > safely in my filing cabinet. Thrashing around with Drawing #1 like someone > putting up a pup tent, I suddenly realized what a hellacious mess it's gonna > be dealing with these damn things when I actually start building. What do > people do with them? Are blueprints fade-resistant enough to stick up on the > wall in the workshop, or do you photocopy the relevant portions and keep the > big drawings put away? Since several unrelated things are on the big > drawings, has anyone tried cutting them up into more manageable pieces? My > drawings have never been used, but they're already getting yellow at the > folds, so should I unfold them and roll them up for storage? > > Incidentally, to extend the rear bulkhead to the bottom and still access the > tailwheel nuts, how about just using nutplates? > > Mike Taglieri ------------------------------ Date: Thu, 08 Jan 1998 12:44:29 -0800 From: Ross Youngblood Subject: Re: KR: Re: Protecting Plans Mark Langford wrote: > And you're right about tailwheel nut plates. But since tail wheel mounting > is not even IN the plans, they left that hole there for the eventuallity > that you might decide you need to do something about your tail dragging on > the ground back there before your first flight. Nutplates are certainly > the way to go, though. I don't need them because my aft deck is easily > removeable. > My aft deck is removeable, and I used tailwheel nutplates. I used small nails instead of rivets... marginally passable but keeps them from rotating. - -- Ross ------------------------------ Date: Thu, 08 Jan 1998 12:46:39 -0800 From: Ross Youngblood Subject: KR: Tiedown Rings Tony Bengelis has a good section in one of his books on making a removable tiedown ring setup. I'm considering cutting into my wings to put something like this in. Either Spruce/Oak with a nutplate floxed in it. I think the FLOX itself will do a pretty good job of controlling moisture problems on the wood. - -- Ross Patrick Flowers wrote: > > Not too long ago, there was a discussion about tie-down rings. > Someone(maybe Bobby Muse) has a set that are removable and screw into > inserts in the wing spars. I can't recall whether he used steel or > aluminum for the insert. Which would be preferable? Steel would make > for more durable threads, but what is the potential for rusting of a > piece of steel that's floxed into the spar? > > Patrick > -- > Patrick Flowers > Tyrone, Ga. > Mailto:patri63@ibm.net ------------------------------ Date: Thu, 08 Jan 1998 12:49:21 -0800 From: Ross Youngblood Subject: Re: KR:Great Web Page Brian, Thanks for this LINK! -- Ross Brian Bland wrote: > > Hey everyone.... > > Check out the following page if you haven't done so before: > > http://www.provide.net/~pratt/ambuilt/faqhmblt.htm > > The guy that has it is a DAR and he has some great info about > registering a homebuilt. He also has the checklist that he uses when > he inpsects a homebuilt. He has inspected over 100 homebuilts in the > past five years. > > > Brian J. Bland, PP, A&P > Claremore, OK > Building stretched and widened KR-2S > > KR-2SBuilder@bigfoot.com > http://www.KR-2S.home.ml.org ------------------------------ Date: Thu, 08 Jan 1998 12:40:44 -0800 From: Ross Youngblood Subject: Re: KR: Test Plan Update Rick, I have successfully downloaded the documents in Word7.0 format, but to my UNIX workstation... this means I haven't actually opened up the files and read them yet. One of these days I will put them on a floppy and take them downstairs to the PC and print them. If you do get them converted to HTML let me know, I will try to fit them in the test flying section of the builder tips page. At the moment I don't even have a link to your site... but it's in the plan. -- Ross EagleGator wrote: > > In a message dated 98-01-06 00:21:22 EST, Mike Taglieri writes: > > << I finally got to your web page today at work (where I have a computer with > Netscape). However, the test plan is not printed out in full there, but is > in > a form that has to be opened somehow... >> > > The files on my web site are in 2 downloadable formats, Word 7.0 and rich text > format (RTF). If your word processor can't translate the Word file, it should > be able to read the RTF file. If anybody has problems getting these to work, > email me privately and tell me what word processor you are using and I'll fix > you up. > > I'm not smart enough to figure out how to get MS Publisher to import the whole > document into my web page, that's why it's not in HTML so that you can read it > online. If someone can educate me, I'm more than willing to learn! The only > thing is, the current version is 56 pages long. Hmmm..... > > Cheers! > Rick Junkin > EagleGator@aol.com > http://members.aol.com/eaglegator ------------------------------ Date: Thu, 08 Jan 1998 12:55:04 -0800 From: Ross Youngblood Subject: KR: Control Stops Oscar, I believe the book "Test Flying a Homebuilt Aircraft" covers some ideas on making control stops. You could install them at the control stick and near the rudder pedals I believe. PLEASE correct me if I am wrong. -- Ross Oscar Zuniga wrote: > > You wrote: > > >inspector noticed no control stops > > Houston, we have a problem. > > Installing control stops after the fact should be a most interesting > problem. According to the dusty books that all the old dead guys wrote > about control surfaces design, the control stops should be located at > the control surface, not too close to the hinges (sorry Mark; I would be > leery of putting the stops at the stick or rudder pedal end of the > controls). That almost surely means getting out the saw and cutting in > to get to the control horns to install stops. It's either that, or go > ahead and try to get by with stops located in the cockpit somewhere. > Not the best choice, but certainly an option. > > Oscar Zuniga > Medford, Oregon > > ______________________________________________________ > Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Thu, 08 Jan 1998 12:57:06 -0800 From: Ross Youngblood Subject: Re: KR: HAPI case Oscar, There was a KR2 that I posted about a year ago in the Medford or Roseburg area that was for sale. I called the owner, and he had a run-in with a small brush that ran out and snatched the runway out from under the plane. Later someone posted that the pilot was not rated... at any rate the builder was parting out the project. The old KRNET post has the builders phone number. -- Ross Oscar Zuniga wrote: > > Netters; > > Some weeks back, Paul Martin located a KR-2 here in Oregon which got > wet; it's ruined, I think. But- as I recall, it has/had a VW, and maybe > a HAPI case with accessories...? So, I will get in touch with Paul to > see if it's still around, and if there is a HAPI on it. Maybe we can > get the necessary parts for the guy who needs them. > > Oscar Zuniga > Medford, Oregon > > ______________________________________________________ > Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Thu, 08 Jan 1998 13:02:59 -0800 From: Ross Youngblood Subject: Re: KR: N541RY Progress Update Dennis, This is pretty good news. I have chosen to use 3/8" fuel line from the pump fed wing tank fuel selector through to the header tank and on to the gascolator. I have a nifty custom 1/4" aeroquip firesleved hose from the gascolator to the carb. I plan on doing some extensive fuel pressure/fuel flow tests, and will ultimately add a boost pump for the header, but in the short term I think flying from the wing tanks, and gravity feed on the header may be OK. -- Ross Dennis Ambrose wrote: > > > My next obsticle[sp?] is the final fuel system routing. I have > >originally installed two Facet fuel pumps under the sling seat which > >feed filtered fuel from each wing tank up to a fuel selector in the > >center of the panel. This was then going to feed the header tank and/ > >or the engine. I'm not 100% happy with the plans solution as I am > >using an Ellison and need 2-3psi or so at the carb, which means that > >gravity feed may not work. > > > >I would be interested in links/photos of fuel schematics specificly > >for the Ellison TBI which is recommended to have pressurized fuel. > > > >I am planning on doing a gravity feed test of the header tank, in my > >case it only holds 5 gallons of reserve fuel, and the idea was > >to use it as a reserve tank. I'm looking to follow the KISS principle > >for my fuel system, as fuel problems are a significant contributor > >to accident statistics. Ideas? > > > > -- Regards > > Ross > > Ross: > As I am only a KR "Buyer" and not a KR "Flyer" yet take this at face value > only, please. > > My airplane had a Hapi 1835 engine, an Ellison T.B.I. and 1/4 fuel line > GRAVITY FED ONLY from the header tank and the previous owner said he could > not run it "flat out" without the boost pump on > but it did O.K. at cruise. He reported that the plane had a habit of > stumbling when the throttle was opened during touch and goes and that > closing the throttle and opening it slowly usually cleared it up. Is it any > wonder this plane met its demise when on a touch and go the engine stumbled > not once but twice before he aborted the take off attempt and ran it off > the asphalt and into the gravel and folded up the retracts?? Hence one > $8500 discount to me! > Since I don't plan to trash that $600 carb, I will be using it along with > 3/8 line and a 1-3 p.s.i. fuel pump and a gravity capable check valve in > paralell.That way if the pump did fail I could still cruise to an airport > to land. > Your results may vary. Hope this helps! > > Regards Dennis (in Toronto) ------------------------------ Date: Thu, 08 Jan 1998 13:09:43 -0800 From: Ross Youngblood Subject: Re: KR: Ellisons and fuel line (was N541RY Progress Update) Tom Crawford wrote: > Mike, > > The problem here is that the EFS-2 (the one for the VW) has a 1\4" flare > fitting at the carb. It is a fitting with a rubber seal on the distal > end, therefore probably impossible to replace. I have never seen one, > and beleive me, I looked. I think your options are: > 1) Add some sort of 1\4 to 3\8 expansion fitting at the carb. > 2) Use 3\8 line from the tank thru to the gascolator, then 1\4 to the > carb. > > I went with #2 above. Less weight, and (someone more experienced with > fluid dynamics feel free to jump in here) without a fuel pump, the 1\4" > fitting on the end of a 3\8" hose will only let so much fluid pass for a > given head level. Thanks Tom, I also did #2. I have 1/4" line only on the lines which are feeding the fuel pump. I used 3/8" line in areas where I *MAY* stick with gravity feed. Fuel flow tests will tell. Of course, I put in a automotive fuel filter in the 3/8" line, which will probably restrict the flow too, but I don't want to mess up my $700 EFS-2. - -- Ross ------------------------------ End of krnet-l-digest V2 #6 ***************************