From: KR-net users group digest[SMTP:kr-net@telelists.com] Sent: Friday, July 23, 1999 12:21 AM To: kr-net digest recipients Subject: kr-net digest: July 22, 1999 KR-net users group Digest for Thursday, July 22, 1999. 1. Re: A Low-Cost Aviation Gasoline that gets the lead out 2. Re: A Low-Cost Aviation Gasoline that gets the lead out 3. Re: A Low-Cost Aviation Gasoline that gets the lead out 4. Re: thanks to many-fuel tanks and gear legs 5. Re: A Low-Cost Aviation Gasoline that gets the lead out 6. Re: A Low-Cost Aviation Gasoline that gets the lead out 7. Re: A Low-Cost Aviation Gasoline that gets the lead out 8. Re: Weights...W&B 9. Jabiru's 10. Re: Jabiru's 11. Oshkosh 12. Ethanol 13. RE: FW: Cooling Problems 14. Weights....W&B... 15. Re: Weights....W&B... 16. J antenna 17. alcohol/ethanol 18. Re: Spruce and glue 19. Re: Spruce and glue 20. Re: Visit Ross' KR2 21. Re: A Low-Cost Aviation Gasoline that gets the lead out 22. Center Spars 23. Re: Center Spars 24. Re: Jabiru's 25. HAPI rebuild 26. Re: J antenna 27. Re: A Low-Cost Aviation Gasoline that gets the lead out ---------------------------------------------------------------------- Subject: Re: A Low-Cost Aviation Gasoline that gets the lead out From: "Gabe Ledford" Date: Thu, 22 Jul 1999 6:53:8 X-Message-Number: 1 From the sounds of the article, and knowing how bureaucracy works, I'd say that your ethanol isn't going to stay in your beer - the EPA will make you put it in your plane. My question involves further complications: Doesn't any alcohol derivative have a tendancy to rot certain rubber and plastics? And require other modifications to engines? Finally, if ethanol releases less energy than other fuels, why do car racers use so much of it, paying the big bucks to make their engines work with it? I thought it was supposed to provide better performance... Gabe (New here, hi everybody) ---------------------------------------------------------------------- Subject: Re: A Low-Cost Aviation Gasoline that gets the lead out From: "Dean Collette" Date: Thu, 22 Jul 1999 09:49:26 -0500 X-Message-Number: 2 Gabe wrote; > Finally, if ethanol releases less energy than other fuels, why do car > racers use so much of it, paying the big bucks to make their engines work > with it? I thought it was supposed to provide better performance... The alcohol in race fuel is usually not ethanol, it's methanol. But it's not alone in there, they also add stuff like Nitromethane, Dinitropropane, Acetone, Propylene Oxide, and Nitrobenzene to give you more bang (makes it burn quicker.) However, alcohol does have less energy per unit volume. The advantage of alcohol in race engines is that it burns more efficiently with less air available. So what you get is more heat produced per unit volume of air that gets sucked into the engine. AT the RPMs and compression that we see in airplane engines, it doesn't help us at all - in fact it hurts us, but at racing RPMs (10,000+) and high compression - it's a whole different ball game. The bottom line here is that if you use a blown V8 with a HUGE reduction system, then alcohol might be the fuel for you, but for "regular" airplane engines, the petroleum distillates (read gas) is the way to go. Dean Collette Milwaukee, Wisconsin mailto:drdean@execpc.com Web Page at http://www.execpc.com/~drdean/home.htm ---------------------------------------------------------------------- Subject: Re: A Low-Cost Aviation Gasoline that gets the lead out From: Willard561@aol.com Date: Thu, 22 Jul 1999 11:50:23 EDT X-Message-Number: 3 In a message dated 7/22/99 12:31:41 AM Mountain Daylight Time, drdean@execpc.com writes: << Thinking back to my chemistry days I seem to recall that ethanol yields 80-90% as much energy per unit volume as traditional fuels. So, you end up with less range, and when the engine is at full throttle - less power (when you really want it.) Also, ethanol has a lower boiling point (about 80C or 175F) at sea level, but we don't fly at sea level, and the boiling point decreases significantly as you climb. I suppose that for most of use using carbuerated engines this isn't all that big of a concern, but if your engine is injected, and the fuel gets a little warm before it gets to the injector - vapor lock. >> Hey Dr. Dean: I remeber reading about cold starting problems also associated with Ethanol Bill Higdon ---------------------------------------------------------------------- Subject: Re: thanks to many-fuel tanks and gear legs From: "R.W. Moore" Date: Thu, 22 Jul 1999 01:24:04 -0400 X-Message-Number: 4 In regars fiberglass I buy a lot of stuff from FiberglassCoatings in St. Petersburg Fla. they talk smart. They will send you a catalog. try 1-800272-7890 R. W. Moore ----- Original Message ----- From: Bobby Muse To: KR-net users group Sent: Wednesday, July 21, 1999 12:14 PM Subject: [kr-net] Re: thanks to many-fuel tanks and gear legs > At 10:50 PM 07/20/1999 -0700, you wrote: > > > > > >On Tue, 20 Jul 1999 19:01:34 -0700 g hamilton writes: > >>Thank you all for information on fuel tank construction. Some said > >>they used the Safe-T-Poxy but would use VinylEster if they would do it > >>today but didn't say why other than the Safe-T-Poxy is no longer > >>available. > > > >Guess that was a quote from me. I'd use Vinyl Ester because 1) > >Safe-T-Poxy isn't available any more. 2) Vinyl Ester has better > >resistance to breaking down when used with Auto fuels which may have > >small amounts of alcohol or other oxidizers added to it. > > > >Jeff Scott - Los Alamos, NM > > > I second that. But if Safe-T-poxy was available, I'll use Safe-T-Poxy. > Bobby Muse > mailto:bmuse@mindspring.com > Wimberly, TX > > > > > --- > You are currently subscribed to kr-net as: rwmoore@alltel.net > To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com > > ---------------------------------------------------------------------- Subject: Re: A Low-Cost Aviation Gasoline that gets the lead out From: "Ron / Dana" Date: Thu, 22 Jul 1999 12:16:39 -0700 X-Message-Number: 5 In the state of Iowa ethanol gasoline has been used for years. One thing good about it is you don't worry about water in your fuel tank, the ethanol takes care of it. I did not notice any change in my engine performance in fact the higher octane helped. Their was some problems back in 70's with rubber seals but the manufactures solved the problem with alternate seal materials in the fuel systems. Who uses rubber products any more? Most "rubber products" are synthetics. I like the idea because of the it helps eliminates the water problem. KRRon -----Original Message----- From: Gabe Ledford To: KR-net users group Date: Thursday, July 22, 1999 6:55 AM Subject: [kr-net] Re: A Low-Cost Aviation Gasoline that gets the lead out >From the sounds of the article, and knowing how bureaucracy works, I'd say >that your ethanol isn't going to stay in your beer - the EPA will make you >put it in your plane. > >My question involves further complications: Doesn't any alcohol derivative >have a tendancy to rot certain rubber and plastics? And require other >modifications to engines? > >Finally, if ethanol releases less energy than other fuels, why do car >racers use so much of it, paying the big bucks to make their engines work >with it? I thought it was supposed to provide better performance... > >Gabe (New here, hi everybody) > >--- >You are currently subscribed to kr-net as: jrlkc@mindspring.com >To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com > ---------------------------------------------------------------------- Subject: Re: A Low-Cost Aviation Gasoline that gets the lead out From: "Tobin Dunham" Date: Thu, 22 Jul 1999 10:52:00 PDT X-Message-Number: 6 >I like the idea because of the it helps eliminates the water problem. > >KRRon Yikes! I hadn't thought about that. Far be it from me to oppose the FAA's findings, but water and alcohol mix into a solution, instead of separating out. So your air/fuel mixture will actually have some water in it. That means that carburetor icing could be more of a problem. Even without icing, it will definitely affect the performance of your engine. I'd rather drain the water out of my tanks before flight than go up in the air knowing it's in there, in solution. They're advertising that no modifications would need to be made to the engine to use this stuff. But if you have water in there, you have no way of knowing how much is mixed in. So depending on how much condensation you have inside your tank before flight, your performance will vary. Very unsettling. I would think that at the very least, you would need to adjust your timing or mixture or SOMETHING to use this new fuel, because it won't combust at the same temperature. BTW, I sent an email earlier but apparently it didn't go through. It may have just gone to the original sender, but it went something like this: I quote the article as saying "The biodiesel component can be made from many different crops, including soy beans, sunflowers, canola and cotton seed. In addition, waste products such as fryer oils and cooking grease, as well as beef tallow and pork lard, can be used." Pork Lard? Are you kidding me? Do any of us really want that in our airplanes? Can you imagine someone taxiing by, and the exhaust smells like bacon? This all sounds fine for automobiles, but until I see it in use for several years with no problems, I prefer to use the "tried and true" stuff. Toby Dunham Houston, TX homepage at http://www.geocities.com/CapeCanaveral/Runway/7013 _______________________________________________________________ Get Free Email and Do More On The Web. Visit http://www.msn.com ---------------------------------------------------------------------- Subject: Re: A Low-Cost Aviation Gasoline that gets the lead out From: "R.W. Moore" Date: Thu, 22 Jul 1999 13:10:21 -0400 X-Message-Number: 7 Will ethanol distroy fiberglass tanks? RWM ----- Original Message ----- From: To: KR-net users group Sent: Thursday, July 22, 1999 11:50 AM Subject: [kr-net] Re: A Low-Cost Aviation Gasoline that gets the lead out > In a message dated 7/22/99 12:31:41 AM Mountain Daylight Time, > drdean@execpc.com writes: > > << Thinking back to my chemistry days I seem to recall that ethanol > yields 80-90% as much energy per unit volume as traditional fuels. So, > you end up with less range, and when the engine is at full throttle - > less power (when you really want it.) Also, ethanol has a lower > boiling point (about 80C or 175F) at sea level, but we don't fly at > sea level, and the boiling point decreases significantly as you climb. > I suppose that for most of use using carbuerated engines this isn't > all that big of a concern, but if your engine is injected, and the > fuel gets a little warm before it gets to the injector - vapor lock. > >> > Hey Dr. Dean: > I remeber reading about cold starting problems also associated with Ethanol > Bill Higdon > > --- > You are currently subscribed to kr-net as: rwmoore@alltel.net > To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com > > ---------------------------------------------------------------------- Subject: Re: Weights...W&B From: Tim Date: Thu, 22 Jul 1999 12:48:14 -0600 X-Message-Number: 8 Dudes; I've done a few W&B's utilizing Area-51's W&B excel spread sheet for the standard KR2, using some different engine(s) weights. Nil increase on the Tailwheel Arm and I omitted the fuse tank and used the 38" 'aux' arm (wing tank I guess) for the 20gals of fuel...pilot weight 220 (be gentle boy's). I now realize why the KR2S has a longer nose, this is a 'BHB' Butt Heavy Bird!, or a Butt Heavy Boy ;-( Not so concerned now about the Subaru weight or moving the Firewall forward for leg room, just the useable/gross. Hey that new airfoil uses a deeper/beefier? spar...hmmm, might need that :-) Tim Cold Lake, AB.....Only one substitute for Speed...More Speed! ---------------------------------------------------------------------- Subject: Jabiru's From: Aubrey Dunham Date: Thu, 22 Jul 1999 14:59:46 -0400 (EDT) X-Message-Number: 9 KR-netters: Has anyone ever put a Jabiru motor on a KR? I saw some specs last night for the 3300 model. 100 hp on 3.75 gal/hr. Weight was 160, I think. No need for a psru, and it rotates clockwise (like a normal aviation engine). Maybe there's something I don't know about it (like the price), but it seemed like a definite possibility. Any comments on that? -Aubrey Dunham San Antonio, TX (yes, 15 miles from Boerne, the AGE85 test facility) _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com ---------------------------------------------------------------------- Subject: Re: Jabiru's From: Richard Selix Date: Thu, 22 Jul 1999 12:31:23 -0700 X-Message-Number: 10 Aubrey: The Jabiru, is a JAR certified engine, made in Austrailia, and the 3300 model now claims 120HP. The price is a little steep at $12,500 to $13,000. (seen both prices) It's widely used in Europe and So. Africa, and is considered a fine engine. Richard. Aubrey Dunham wrote: > KR-netters: > Has anyone ever put a Jabiru motor on a KR? I saw some specs last > night for the 3300 model. 100 hp on 3.75 gal/hr. Weight was 160, I > think. No need for a psru, and it rotates clockwise (like a normal > aviation engine). Maybe there's something I don't know about it (like > the price), but it seemed like a definite possibility. Any comments on > that? > > -Aubrey Dunham > San Antonio, TX > (yes, 15 miles from Boerne, the AGE85 test facility) > > _________________________________________________________ > Do You Yahoo!? > Get your free @yahoo.com address at http://mail.yahoo.com > > --- > You are currently subscribed to kr-net as: rselix@earthlink.net > To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com ---------------------------------------------------------------------- Subject: Oshkosh From: Kr2dream@aol.com Date: Thu, 22 Jul 1999 15:32:54 EDT X-Message-Number: 11 If anyone is interested, I'll have the panel from my KR-2S in our booth #1036 in Building A. i would like a chance to meet anyone interested in a KR if they want to stop by and say HI. No sales pitch as we don't sell at the show. I'll try to remember to bring my construction photo book as well. Bob Lasecki Getting ready for Oshkosh Chicago. ---------------------------------------------------------------------- Subject: Ethanol From: Ron Freiberger Date: Thu, 22 Jul 1999 16:04:04 -0500 X-Message-Number: 12 He said;; Finally, if ethanol releases less energy than other fuels, why do car racers use so much of it, paying the big bucks to make their engines work with it? I thought it was supposed to provide better performance... Ethanol is about 50% energy rating, and you can run on ethanol easily by doubing the area of jets ..(1.414 x Diameter) The fuel evaporation helps cool the engine, just like when you go from 65% power to WOT. Most aircraft carburetors greatly increase fuel flow to about 150% of requirement at full power. You are cooling the engine by evaporation, 'cause the simple-ass cooling system for small (air-cooled) have no other control means. Presumably. you won't be spending that much time a peak power. The corn-powered Congress is foisting this issue on the public. Ethanol is expensive. The effective fuel for long flights is Diesel, about 40k BTU per pound. On Zepplins, it made routine flightrs of thousands of miles possible in 1925's. Too bad one little accident stopped that. ---------------------------------------------------------------------- Subject: RE: FW: Cooling Problems From: "Eduardo Iglesias" Date: Thu, 22 Jul 1999 11:13:58 -0300 X-Message-Number: 13 Carlton Du you check the sup of air inlet and outlet? Do you know wich radiator is good for similar motors? If you havīnt a valve in the upper side, maybe you have air and cavitation in the wather pump. And what about an oil radiator? Isīnt better that, if you put 3 radiators, the warm water enter by the rear rad? As you can see I have more questions than answers, but y hope that help you to think about. Eduardo -----Mensaje original----- De: Blandford, Carlton C Para: KR-net users group Fecha: Martes, 20 de Julio de 1999 04:09 a.m. Asunto: [kr-net] FW: Cooling Problems > >-----Original Message----- >From: Carlton Blandford [mailto:Genesis2@iafrica.com] >Sent: 18 July 1999 11:21 >To: cblandford@mail.sbic.co.za >Subject: Cooling Problems > > >Hi Chaps, > >I need some Help! > > I just cannot get my engine to cool properly at full throttle for longer >that 2 minutes on the ground. She will keep a constant temp at any setting >below 2500 RPM. Once the throttle is advanced beyond this point the engine >overheats in about 2 minutes. (flying makes no difference) > >As some of you know I have a water-cooled VW engine installed in a standard >KR2. I've tried to mount the radiator in various positions under the engine >but to no avail. Here are some of the facts: >1. The radiator is 200mm (8") in width by 400mm (16") long by 30mm (1") >thick. (single core). >2. Pipe diameter ID is 1". >3. The thermostat has been removed. >4. The original water pump has been retained. This is a high capacity pump. >5. The RAD can only be mounted under the engine or on the belly as there is >no space on top,sides, on the firewall or in front of the engine. > >I think the RAD is too small (only holds about one litre of water) so I've >decided to make up three lengths of about 500mm (20") by 100mm (4") and >mount them behind each other. Coolant will enter the front RAD and exit the >rear one. I intend mounting this just below the firewall and have a 100mm >channel running up the bottom of the cowling to about the halfway point. > >The problem is I'm not sure if this will work? > >Will the RAD be of sufficient capacity? > >What size must the inlet area be and where is the best location on the cowl? > >What other alternatives are there? > >Thanks for any advise in advance > >The installation can be viewed at >Http://www.geocities.com/pipeline/valley/2636/eng.html > > >Regards >Carlton Blandford > > > >--- >You are currently subscribed to kr-net as: emiglesias@cpenet.com.ar >To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com ---------------------------------------------------------------------- Subject: Weights....W&B... From: Tim Date: Thu, 22 Jul 1999 18:10:35 -0600 X-Message-Number: 14 OK...I'm stupid!.....Like I was telling you all, I went to Area 51 Weights page to use the W&B sheet and the data (bottom of page). So I expanded the worksheet (more room in/between the rows for my pencil) and printed some out, to do calculations...longhand, right? WRONG...! The program does this itself, you enter the weights (and arms if a change is needed) then the rest is automatic...just like that!...it told me to lose weight :-o and that my steel block 351 Cleveland might be just a tad too heavy ;-) I should take a basic computor course, but it's more Fun teaching yourself...Mark/Dean 'smart cookies'...If any of you guy's are like me and want this up/running, send me an email and I'll walk you thru the Zipfile download/excel..BS ToolTim-e Cold Lake, AB ---------------------------------------------------------------------- Subject: Re: Weights....W&B... From: Kimball Anderson Date: Thu, 22 Jul 1999 21:58:27 -0400 X-Message-Number: 15 > The program does this itself, you enter the weights (and arms if a >change is needed) then the rest is automatic...just like that!...it told >me to lose weight :-o and that my steel block 351 Cleveland might be >just a tad too heavy ;-) Just a tad? Hmm -- I wonder if the SVO guys still make those aluminum 460 blocks and heads |8^) Kimball Anderson isleno@hargray.com ---------------------------------------------------------------------- Subject: J antenna From: "Mark Langford" Date: Thu, 22 Jul 1999 21:13:32 -0500 X-Message-Number: 16 AntennaHeads, It's a little quiet tonight, so let me throw this out. A couple of guys have asked for the drawing that I promised of my "plumber's dream" J pipe 127 MHz base station antenna. I copied the Jim Weir version from the July 88 Kitplanes. It works great, with reception of aircraft and towers from Atlanta to Memphis, and all around. Easily a 100 mile radius, and then some. The drawing pretty much says it all, and is at http://home.hiwaay.net/~langford/antenna.jpg . The only thing missing from the drawing is a little 1" length of copper pipe used to join the tee and the elbow (although it's shown). The tee can be 1/2 x 1/2 x 1/2 if you don't need the strength of a 3/4" mast. There's also a stainless steel nut soldered under the cap of the short part (the reflector) that the stainless steel screw goes into. You're supposed to tune the thing with a SWR meter, but I haven't bothered to do that yet, and won't transmit on it until I do. All joints are soldered together using flux, pipe solder, and a propane torch. It's a half hour job to make this thing, and it works great! Apparently the antenna stops at the bottom of the J, and even if you use copper tubing to make a mast, it doesn't have to be insulated, from what I gather. The connections are the braided one to the tall element, and the center wire to the short one. The wires go into ring terminals which are screwed and soldered to the pipe for good measure. Length of the coax from antenna to radio is immaterial. Tomorrow night I close out my wing, and build a "flip-o-matic" so I can glass the passenger wing either this weekend or next weekend... Mark Langford, Huntsville, Alabama mailto:langford@hiwaay.net see KR2S project N56ML at http://home.hiwaay.net/~langford ---------------------------------------------------------------------- Subject: alcohol/ethanol From: John Roffey Date: Thu, 22 Jul 1999 22:53:12 -0500 X-Message-Number: 17 The racers who use these fuels do so because they are much easier on engines. Carbon based fuel has a lot of abrasive by product of combustion which is what makes your oil dirty and wears on the bearings, cylinder walls crank journals and valve stems. When alcohol is used for racing, the volume put through the engine is many time higher than the same engine running on gasoline. The reason for this is because the effective yield of BTUs is much lower in alcohol than good ol' gas. The up side in using alcohol is the cleaner engine and the transfer of heat necessary to vaporize the alcohol which results in a much cooler running engine. Ethanol is only used to stretch gas in volume and clean up the emissions in cars which it does fairly effectively, but at a cost of lower power available for the same volume. ---------------------------------------------------------------------- Subject: Re: Spruce and glue From: Michael Taglieri Date: Thu, 22 Jul 1999 00:26:12 -0400 X-Message-Number: 18 >> I'm going out on a limb here and just speak my mind, flames or no. >> I also wouldn't bother with all those darn gussets, the whole fuse >is >> sheeted with plywood . . . > >Tom, > >The only thing I am going to say is - try and get that past the >inspector. The plans call out gussets, and a good many of the >inspectors are guys from the "real" wooden airplane era. . . . However, as we've been through before on this list, you can use plywood gussets instead of the spruce gussets, as described in Tonly Bingelis's books. One of the early Newsletters said both were acceptable and the plywood ones would be at least as strong. Mike Taglieri ___________________________________________________________________ Get the Internet just the way you want it. Free software, free e-mail, and free Internet access for a month! Try Juno Web: http://dl.www.juno.com/dynoget/tagj. ---------------------------------------------------------------------- Subject: Re: Spruce and glue From: Ross Youngblood Date: Thu, 22 Jul 1999 20:17:38 -0700 X-Message-Number: 19 I spent a long time in engineering school analyzing bridges and trusses and the loads transfered to them. And I was going to be a computer engineer anyway.... I would recommend at least using plywood gussets on the inside. See Tony Bengilis' book. After making the 30,000,000 gussets required for my KR project, I don't see how anywone should get away without making their set, and paying dues. Plus they do increase the load transfer from one member to another. This could be important at 190MPH when a gust hits you. -- Ross Dean Collette wrote: > > Tom wrote; > > I'm going out on a limb here and just speak my mind, flames or no. > > I also wouldn't bother with all those darn gussets, the whole fuse > is > > sheeted with plywood . . . > > Tom, > > No flames. I'm not even going to touch the structural considerations, > although, I'd like to. > > The only thing I am going to say is - try and get that past the > inspector. The plans call out gussets, and a good many of the > inspectors are guys from the "real" wooden airplane era. . . . > > Dean Collette Milwaukee, Wisconsin > mailto:drdean@execpc.com > Web Page at http://www.execpc.com/~drdean/home.htm > > --- > You are currently subscribed to kr-net as: rossy@teleport.com > To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com ---------------------------------------------------------------------- Subject: Re: Visit Ross' KR2 From: Ross Youngblood Date: Thu, 22 Jul 1999 20:01:39 -0700 X-Message-Number: 20 Larry, I return to work Aug 1st, and we might be leaving Friday. I'll let you know when you call. 541-753-7370 -- Regards Ross Larry O'Rourke wrote: > > Could you leave me a phone number that I might call to schedule a visit to > see your KR2? Thanks. > > Larry O'Rourke > > --- > You are currently subscribed to kr-net as: rossy@teleport.com > To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com ---------------------------------------------------------------------- Subject: Re: A Low-Cost Aviation Gasoline that gets the lead out From: David Mullins Date: Fri, 23 Jul 1999 00:00:49 -0400 X-Message-Number: 21 Tobin Dunham wrote: it went something like this: I quote the article as saying "The biodiesel component can be made from many different crops, including soy beans, sunflowers, canola and cotton seed. In addition, waste products such as fryer oils and cooking grease, as well as beef tallow and pork lard, can be used." Pork Lard? Are you kidding me? Do any of us really want that in our airplanes? Can you imagine someone taxiing by, and the exhaust smells like bacon? This all sounds fine for automobiles, but until I see it in use for several years with no problems, I prefer to use the "tried and true" stuff. I seem to remember a few years back on the news of a guy that lives in Hershey, PA. He was getting the waste chocolate from Hershey,Inc and was converting it into Ethanol fuel for his plane. When he started it up the smell of chocolate filled the air. Another story was of someone getting the deep fryer grease from the Long John Silver's Restaurants and doing the same for his car. His exhaust must have smelled very fishy! Dave M Nashua NH ---------------------------------------------------------------------- Subject: Center Spars From: JamesMcG@aol.com Date: Fri, 23 Jul 1999 00:19:20 EDT X-Message-Number: 22 I recently picked up a fueslage that was widened by 6 in. It came with some spar material that was just standard length. I assume that I should increase rhe length of the center spar by that 6 in. Is that what everyone elese that widens the fueslage doing? Also there is a 4 in crack in the plywood, it appears just the top layer is loose along that. Whats the best way to fix that? Dose anyone on the net in the Minneapolis area have one flying? Jim McGillicuddy ---------------------------------------------------------------------- Subject: Re: Center Spars From: Mike Mims Date: Thu, 22 Jul 1999 21:22:21 -0700 X-Message-Number: 23 JamesMcG@aol.com wrote: > > I recently picked up a fueslage that was widened by 6 in. It came with some > spar material that was just standard length. I assume that I should increase > rhe length of the center spar by that 6 in. Is that what everyone elese that > widens the fueslage doing? Also there is a 4 in crack in the plywood, it > appears just the top layer is loose along that. Whats the best way to fix > that? The amount of flat area on the bottom of the fuselage will more than make up for the six inches of airfoil your missing. Where is this crack your talking about? Its hard to tell from your question. -- zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims Filling and Sanding again! http://www.geocities.com/CapeCanaveral/Hangar/4136/ http://members.home.com/mikemims/ Aliso Viejo CA ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ---------------------------------------------------------------------- Subject: Re: Jabiru's From: Terence Adair Date: Fri, 23 Jul 1999 14:45:37 +1000 X-Message-Number: 24 Jabiru info can be found at--http://www.jabiru.net.au Terry Adair Melbourne--Australia. Aubrey Dunham wrote: > KR-netters: > Has anyone ever put a Jabiru motor on a KR? I saw some specs last > night for the 3300 model. 100 hp on 3.75 gal/hr. Weight was 160, I > think. No need for a psru, and it rotates clockwise (like a normal > aviation engine). Maybe there's something I don't know about it (like > the price), but it seemed like a definite possibility. Any comments on > that? > > -Aubrey Dunham > San Antonio, TX > (yes, 15 miles from Boerne, the AGE85 test facility) > > _________________________________________________________ > Do You Yahoo!? > Get your free @yahoo.com address at http://mail.yahoo.com > > --- > You are currently subscribed to kr-net as: adair@net2000.com.au > To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com ---------------------------------------------------------------------- Subject: HAPI rebuild From: "David McKelvey" Date: Thu, 22 Jul 1999 21:46:51 X-Message-Number: 25 Does anyone know where I can get a HAPI eng o/h'd or am I gonna have to roll up my sleeves and get after it? ---------------------------------------------------------------------- Subject: Re: J antenna From: "Rob Matthews" Date: Fri, 23 Jul 1999 07:44:33 +0200 X-Message-Number: 26 Hi Ross Please let me know what measurements you used for the lengths, i see on your drawing 67.8 ?? is this mm , m , feet, inches,cm etc Regards Rob Matthews Have A Wonderful Day South Africa ( Sunny Skies ) KR 2 - ZS - VCM -----Original Message----- From: Mark Langford To: KR-net users group Date: Friday, 23 July, 1999 04:20 Subject: [kr-net] J antenna >AntennaHeads, > >It's a little quiet tonight, so let me throw this out. > >A couple of guys have asked for the drawing that I promised of my "plumber's >dream" J pipe 127 MHz base station antenna. I copied the Jim Weir version >from the July 88 Kitplanes. It works great, with reception of aircraft and >towers from Atlanta to Memphis, and all around. Easily a 100 mile radius, >and then some. The drawing pretty much says it all, and is at >http://home.hiwaay.net/~langford/antenna.jpg . The only thing missing from >the drawing is a little 1" length of copper pipe used to join the tee and >the elbow (although it's shown). The tee can be 1/2 x 1/2 x 1/2 if you >don't need the strength of a 3/4" mast. There's also a stainless steel nut >soldered under the cap of the short part (the reflector) that the stainless >steel screw goes into. You're supposed to tune the thing with a SWR meter, >but I haven't bothered to do that yet, and won't transmit on it until I do. >All joints are soldered together using flux, pipe solder, and a propane >torch. It's a half hour job to make this thing, and it works great! > >Apparently the antenna stops at the bottom of the J, and even if you use >copper tubing to make a mast, it doesn't have to be insulated, from what I >gather. The connections are the braided one to the tall element, and the >center wire to the short one. The wires go into ring terminals which are >screwed and soldered to the pipe for good measure. Length of the coax from >antenna to radio is immaterial. > >Tomorrow night I close out my wing, and build a "flip-o-matic" so I can >glass the passenger wing either this weekend or next weekend... > >Mark Langford, Huntsville, Alabama >mailto:langford@hiwaay.net >see KR2S project N56ML at http://home.hiwaay.net/~langford > > > > >--- >You are currently subscribed to kr-net as: mathewrz@iafrica.com >To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com > > ---------------------------------------------------------------------- Subject: Re: A Low-Cost Aviation Gasoline that gets the lead out From: Michael Taglieri Date: Fri, 23 Jul 1999 01:53:44 -0400 X-Message-Number: 27 Pork Lard? Are you kidding me? Do any of us really >want that in our airplanes? Can you imagine someone taxiing by, and the >exhaust smells like bacon? This all sounds fine for automobiles, but >until I see it in use for several years with no problems, I prefer to >use the "tried and true" stuff. We can bury our heads in the sand if we want, but the "tried and true" stuff is tetraethyl lead, and it'll be gone before long. This new fuel is supposed to work fine in most of the GA fleet, including engines that clog up their valves on 100LL. Also, ethanol-based fuel would be vastly safer if the tank cracked open in an accident. Finally, I've recently been reading "Paper Money," the story of how our dependence on imported oil ruined the economy of the US in the 70's. Cottonseed, pork lard, etc., we can grow right here. Mike Taglieri ___________________________________________________________________ Get the Internet just the way you want it. Free software, free e-mail, and free Internet access for a month! Try Juno Web: http://dl.www.juno.com/dynoget/tagj. --- END OF DIGEST --- You are currently subscribed to kr-net as: johnbou@timberline.com To unsubscribe send a blank email to leave-kr-net-17800J@telelists.com