From: jfdewet@intekom.co.za[SMTP:jfdewet@intekom.co.za] on behalf of owner-krnet-l-digest@teleport.com[SMTP:owner-krnet-l-digest@teleport.com] Sent: Saturday, August 15, 1998 11:29 PM To: 'krnet-l@teleport.com' Subject: krnet-l-digest V2 #137 krnet-l-digest Monday, August 17 1998 Volume 02 : Number 137 ---------------------------------------------------------------------- Date: Sat, 15 Aug 1998 08:02:41 EDT From: KR2616TJ@aol.com Subject: Re: KR: cut-rate KR2S composite parts? In a message dated 98-08-15 01:08:35 EDT, you write: << Not to mention that we here in California know if it cost more it has to be better,... so my tailwheel unit IS obviously better than any other unit purchased at a lower cost! :o) >> That's right, you get what you pay for............you go cheap, you get cheap.........nuff said :-)) Crossing my fingers that MY revflow is adjusted correctly. Dana Overall Richmond, KY mailto:kr2616tj@aol.com http://www.geocities.com/CapeCanaveral/Hangar/7085/ ------------------------------ Date: Sat, 15 Aug 1998 12:23:26 -0500 From: "Mark Langford" Subject: RE: KR: Piano hinge material WARRONFLYS@aol.com wrote: > suggest you use extruded even though no load is > carried there is lift generated from low pressure area WARRENFLYS, I appreciate your concern, but I couldn't help but to do a little test (see http://home.hiwaay.net/~langford/15aug98a.jpg ). I took a four inch length of 1/2" wide MS20257 rolled excheapo hinge material and made a little test fixture that I could hang from. It was screwed between two pieces of southern yellow pine with four screws per side (one per inch, roughly) and mounted it as shown in the picture. Since the hinge was 4" long and I'm kinda simple minded, I donned a tool belt and several hammers to bring my weight up to 160 lbs so I could get a nice round number of 40 lbs per inch of hinge. I hung there, and hung there, but it didn't even distort the hinge. Knowing that the weakness in this test was actually the wood, I had to remove two of the four screws on one hinge half to get the wood to fail. Since my deck uses 160" of hinge (counting both sides), you'd have to apply MORE than 6400 pounds to get my aft deck off of the back of my fuselage. That beats even the wildest claim I've heard that the canopy of a similar plane has 400 lbs of lift acting on it. When you think about it, you're saying that the canopy is responsible for half the lift of your airplane. I don't think I can subscribe to that theory. In the immortal words of Steve Bennett (and I think he might have been talking about me) "A lot of misinformation is on the web". This test took no more than ten minutes to perform. I suggest we all do more of it and share it between us. We'll all get a lot smarter. Bottom line is, it ain't the hinge you gotta worry about, it's how you fasten it between the longerons and deck. Since extruded is four times the price of the rolled variety, I'm happy with my decision. Now for ailerons, I'd certainly use extruded, if I were using piano hinges... Mark Langford mailto:langford@hiwaay.net see KR2S N56ML at http://home.hiwaay.net/~langford ------------------------------ Date: Sat, 15 Aug 1998 11:19:26 -0700 From: Micheal Mims Subject: RE: KR: Piano hinge material At 12:23 PM 8/15/98 -0500, you wrote: Bottom line is, it ain't the hinge you gotta worry about, it's how you fasten it between the longerons and deck. Since extruded is four times the price of the rolled variety, I'm happy with my decision. Now for ailerons, I'd certainly use extruded, if I were using piano hinges... > >Mark Langford I have decided to go with four, 8 inch pieces per side. Using full length piano hinges is just against everything else I have read. Any wing flex at all should cause binding at the hinge but then again its worked that way for over 25 years. zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims SP290,..Putting the engine back together now! mailto:mikemims@pacbell.net http://www.geocities.com/CapeCanaveral/Hangar/4136/ Irvine Ca Fax 949.856.9417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------------------ Date: Sat, 15 Aug 1998 18:39:05 -0500 From: N4DD Subject: Re: KR: Wing skins (and engines) John F. Esch wrote: > > Same here, too > > John F. Esch > Salem, OR > > Robert Covington wrote: > > > >If anyone out there hears of a mid to high time O-200 could you let > > me or > > >Haris know? Haris is looking for one and Brad wants one too. > > > > >Micheal Mims > > > > I am in need of one too...preferably one that is running (or was > > recently). > > > > Robert Covington I have located several O-200's. Let me know if you are interested. Jean N4DD Broken Arrow,OK ------------------------------ Date: Sat, 15 Aug 1998 19:55:00 -0400 From: Kip Anderson Subject: KR: Polyisocyanurate foam core I built an airfoil roof rack in 1985 using a 1/2" pvc foam called Celotex. It is a 2lb/cuft closed cell foam. One problem is it comes with a foil coating on both sides but it can be pealed off by applying heat. It is very tough and very flexible in one direction. It cuts clean with a saw and sands ok. I cut using a band saw to 1/8" thick. I have not done any scientific peal tests on it to verify the bonding properties. It bonds very well using Probond polyurethane glue and the joint can be sanded if careful. You can use any solvent, gasoline, glue or resin on it with out any effect to the foam. I have not found anything that attacks it. I had some in a pond for 5 years with out any degradation. The trade name is Tuff-R and there is a web page www.triangle-lumber.com/prod/feature/cleotex/tuff-R.shtml The 1/2" will bent in about a 3" radius with out a form and 2" in a mold. Scotties Lumber carries 1/2" and 3/4" and it comes up to 2" thick. There are some other similar products but they are not as consistent in texture and pealing off the foil destroys the foam. I plan to do some additional experiments, vacuum bagging and peal tests. I will post on the net when I finish. The best feature is the cost, about $8.00 a sheet. ------------------------------ Date: Sat, 15 Aug 1998 21:08:45 EDT From: WARRONFLYS@aol.com Subject: Re: KR: Piano hinge material ok dokey sounds like you did it right . right now were testing a cooling system on our soobs, less weight better cooling i hope,we"ll see. good luck with yours. can you tell me the site for the krchat if there is one s. makish saiid there was one but i can't locate it unless this is what he was talking about ------------------------------ Date: Sat, 15 Aug 1998 21:08:07 -0400 From: "Eugene Gargasz" Subject: KR: Re: Polyisocyanurate foam core Hi kip, With a hair dryer you can form it to conform to any radius, gasoline does not phase it. If you run any glass composite test please post results, possible all composite lite weight KR. thanks, Eugene Gargasz Elyria Ohio - -----Original Message----- From: Kip Anderson To: krnet-l@teleport.com Date: Saturday, August 15, 1998 8:00 PM Subject: KR: Polyisocyanurate foam core >I built an airfoil roof rack in 1985 using a 1/2" pvc foam called >Celotex. It is a 2lb/cuft closed cell foam. One problem is it comes with >a foil coating on both sides but it can be pealed off by applying heat. >It is very tough and very flexible in one direction. It cuts clean with >a saw and sands ok. I cut using a band saw to 1/8" thick. I have not >done any scientific peal tests on it to verify the bonding properties. >It bonds very well using Probond polyurethane glue and the joint can be >sanded if careful. You can use any solvent, gasoline, glue or resin on >it with out any effect to the foam. I have not found anything that >attacks it. I had some in a pond for 5 years with out any degradation. >The trade name is Tuff-R and there is a web page >www.triangle-lumber.com/prod/feature/cleotex/tuff-R.shtml >The 1/2" will bent in about a 3" radius with out a form and 2" in a >mold. Scotties Lumber carries 1/2" and 3/4" and it comes up to 2" thick. >There are some other similar products but they are not as consistent in >texture and >pealing off the foil destroys the foam. >I plan to do some additional experiments, vacuum bagging and peal tests. >I will post on the net when I finish. The best feature is the cost, >about $8.00 a sheet. > ------------------------------ Date: Sat, 15 Aug 1998 23:43:44 EDT From: Afzoomer@aol.com Subject: KR: Kr2 engines The KR2 specs call for up to 100 hp. But I have found that the 0-235 and 0-290 are almost exactly the same size and weight. Will more hp up the useful load and add some speed? Craig ------------------------------ Date: Sun, 16 Aug 1998 00:46:11 EDT From: HAshraf@aol.com Subject: Re: KR: Kr2 engines In a message dated 8/15/1998 8:45:13 PM Pacific Daylight Time, Afzoomer@aol.com writes: << The KR2 specs call for up to 100 hp. But I have found that the 0-235 and 0-290 are almost exactly the same size and weight. Will more hp up the useful load and add some speed? Craig >> I am sure Mike Mims will tell you that an O-290 is much heavier than a O-200. Haris Ashraf ------------------------------ Date: Sun, 16 Aug 1998 00:51:02 EDT From: HAshraf@aol.com Subject: Re: KR: Wing skins (and engines) In a message dated 8/15/1998 4:43:24 PM Pacific Daylight Time, ycgb97a@prodigy.com writes: << I have located several O-200's. Let me know if you are interested. >> I sent you an offline email but it was returned. I am really interested in an O-200 engine. Thanks Haris Ashraf hashraf@aol.com ------------------------------ Date: Sat, 15 Aug 1998 22:42:00 -0700 From: Micheal Mims Subject: Re: KR: Kr2 engines At 11:43 PM 8/15/98 EDT, you wrote: >The KR2 specs call for up to 100 hp. But I have found that the 0-235 and 0-290 are almost exactly the same size and weight. Will more hp up the useful load and add some speed? > >Craig Stick around and we will find out! :o) zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims SP290,..Putting the engine back together now! mailto:mikemims@pacbell.net http://www.geocities.com/CapeCanaveral/Hangar/4136/ Irvine Ca Fax 949.856.9417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------------------ Date: Sat, 15 Aug 1998 22:48:33 -0700 From: Micheal Mims Subject: Re: KR: Kr2 engines At 12:46 AM 8/16/98 EDT, you wrote: > >I am sure Mike Mims will tell you that an O-290 is much heavier than a O-200. > >Haris Ashraf > Yes Mike Mims will tell you that the O-290 is about 30 pounds heavier than a O-200 but it (the O-290) is 25 pounds lighter than a EA81 with a redrive! :o) I will weigh my 290 in a week or so after I put it back together and of course I will post it on the "weights" site at Area51. zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims SP290,..Putting the engine back together now! mailto:mikemims@pacbell.net http://www.geocities.com/CapeCanaveral/Hangar/4136/ Irvine Ca Fax 949.856.9417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------------------ Date: Sun, 16 Aug 1998 08:29:59 +0200 From: Kobus de Wet Subject: RE: KR: Piano hinge material With regard to the wing flexing. As I have full length piano hinges on my ailerons and being worried about wing flexing and binding of the ailerons, I have done a simple test on my aircraft. I got two guys of 200 Lbs. each to sit in the cockpit (A very tight fit I must say) with one moving the stick in the lateral plane while I was lifting the wing tip until the wheel closes to me came off the ground and then pressing down with all of my 190 Lbs. I did this test on both sides and also tried twisting the wingtip. At no stage during the test did the wing show any signs of flexing. Now this dose not prove that the wing will not flex in flight but as the loads were applied to the tip and not over the whole length as under flight loads, I doubt if it will flex that much in flight. Kobus de Wet KR-2 ZS-WPX (Should be flying this coming weekend) Cape Town, South Africa GMT + 2.00 http://home.intekom.com/kobusdw/ - ---------- From: Micheal Mims[SMTP:mikemims@pacbell.net] Sent: Saturday, August 15, 1998 20:19 To: krnet-l@teleport.com Subject: RE: KR: Piano hinge material At 12:23 PM 8/15/98 -0500, you wrote: Bottom line is, it ain't the hinge you gotta worry about, it's how you fasten it between the longerons and deck. Since extruded is four times the price of the rolled variety, I'm happy with my decision. Now for ailerons, I'd certainly use extruded, if I were using piano hinges... > >Mark Langford I have decided to go with four, 8 inch pieces per side. Using full length piano hinges is just against everything else I have read. Any wing flex at all should cause binding at the hinge but then again its worked that way for over 25 years. zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims SP290,..Putting the engine back together now! mailto:mikemims@pacbell.net http://www.geocities.com/CapeCanaveral/Hangar/4136/ Irvine Ca Fax 949.856.9417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------------------ Date: Sun, 16 Aug 1998 09:43:26 -0400 From: Donald Reid Subject: Re: KR: Piano hinge material Kobus de Wet wrote: > > With regard to the wing flexing. As I have full length piano hinges on my > ailerons and being worried about wing flexing and binding of the ailerons, > I have done a simple test on my aircraft. I got two guys of 200 Lbs. each > to sit in the cockpit (A very tight fit I must say) with one moving the > stick in the lateral plane while I was lifting the wing tip until the wheel > closes to me came off the ground and then pressing down with all of my 190 > Lbs. I did this test on both sides and also tried twisting the wingtip. At > no stage during the test did the wing show any signs of flexing. I hate to bring bad news, but this test does not prove anything, except that you did not observe any flexure under the conditions that you created. In a real world situation, the wings will deflect under load. During a maximum G pull up, the deflection will be several inches at the wing tip. I have spoken to one KR pilot who said that his ailerons would bind if he pulled more than about 2 G's. He said the first time he discovered it was when he was lining up for a high speed pass. In almost every case I can think of (except for the KR and some ultralights) the hinges are segmented. I am sure that there will be examples of continuous piano hinge used on ailerons of high speed A/C, but I don't remember any. In my opinion, three or four piano hinge segments, each about six inches long, would be a much better choice. - -- Don Reid Bumpass, Va. mailto:donreid@erols.com KR2XL at http://www.erols.com/donreid/kr_page.htm Ultralights at http://www.erols.com/donreid/usua250.html ------------------------------ Date: Sun, 16 Aug 1998 13:10:51 EDT From: Genseric@aol.com Subject: Re: KR: Kr2 engines Has any one been looking at rotary engines? At Oshkosh I had talked to David Atkins for some time. He's developing a Single Rotar engine based off the Mazda 13B It's still under develpoment but is expected to produce 80-100 hp and way around 120 lbs dry. Then you still need the water and oil cooler. I'm guessing I would end up around 140-150 lbs wet. Wankle Rotary is back in business as well. Right now they have a twin rotar engine that produces 75 hp with reduction unit and a 3 bladed propeler. It comes with electronic ignition and fuel injection. All that weighs 110 lbs and still needs water and oil cooler. The engine doesn't have an oilin enjector so it needs mixed gas, but it has ports that could be fitted with an oil injector later. That's my only real turn off to this engine. I think every new snowmabile comes with oil injectors these days. I'ld like to hear what you guys have to say about this. Ben Raby Minnesota ------------------------------ Date: Sun, 16 Aug 1998 10:44:53 -0700 From: Micheal Mims Subject: Re: KR: Kr2 engines At 01:10 PM 8/16/98 EDT, you wrote: >Has any one been looking at rotary engines? >I'ld like to hear what you guys have to say about this. > >Ben Raby Ben I looked at them pretty hard when I was building my Dragonfly. But what I found was most of them always seem to be "still under development " . From what I gathered there just wasn't that many flying. Sure you see one or two now and then on the cover of Kit planes or SA but when compared to the amount of VWs, Subarus, etc., the number in use is very low. Wonder why? The performance specs with a rotary sound nice but keep in mind you will need some kind of reduction. Also they consume fuel like there's no tomorrow. And another thing is the amount of heat generated is tremendous. Good Luck! zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims SP290,..Putting the engine back together now! mailto:mikemims@pacbell.net http://www.geocities.com/CapeCanaveral/Hangar/4136/ Irvine Ca Fax 949.856.9417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------------------ Date: Sun, 16 Aug 1998 20:49:29 -0500 From: N4DD Subject: Re: KR: Wing skins (and engines) HAshraf@aol.com wrote: > > In a message dated 8/15/1998 4:43:24 PM Pacific Daylight Time, > ycgb97a@prodigy.com writes: > > << I have located several O-200's. Let me know if you are interested. >> > > I sent you an offline email but it was returned. I am really interested in an > O-200 engine. > > Thanks > > Haris Ashraf > hashraf@aol.com Haris I never got your email. Did you send it to N4DD@pop.prodigy.net ? I'll find out more particulars for you. Where do you live? Jean N4DD Broken Arrow,OK ------------------------------ Date: Sun, 16 Aug 1998 19:28:50 -0700 From: Micheal Mims Subject: Re: KR: Wing skins (and engines) Motorheads, my wife developed a roll film today and there were a few photos from my engine painting ordeal on it. You can see them at: http://www.geocities.com/CapeCanaveral/Hangar/4136/engine.html Today I built up the motor mount jig to drop off at the welder. This is getting pretty cool! :o) zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims SP290,..Putting the engine back together now! mailto:mikemims@pacbell.net http://www.geocities.com/CapeCanaveral/Hangar/4136/ Irvine Ca Fax 949.856.9417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------------------ Date: Sun, 16 Aug 1998 22:39:44 -0700 From: Ross Youngblood Subject: Re: KR: KR-2S Center Section Spar Details Richard, I'm not sure what you are asking. I used Spruce for the top and bottom spar caps, laminating two pieces to get the appropriate thickness. Then I used spruce vertical pieces of various sizes (as I recall). The webbing I used was 3 ply 3/32" mahogany plywood (Mil Spec > $80 sheet). I think you can use birch ply, but if I recall the materials kits only offered birch as an option for the firewall, that is if you were looking to use the RR materials kits as a guide. Birch plywood would be fine I think. Richard Parker wrote: > I'm about to build my center section spars and after looking over the > manual and drawings am wondering if there were any updates that I > missed. It seems to me that the center section is the same as the KR-2. > However some people have used birch and some mahogany. Was that just > personal preference? (Birch being stronger but heavier) > > Any other details that I'm missing? > > Thanks, > > Richard E. Parker > Jaffrey, NH > richontheroad@hotmail.com > http://top.monad.net/~theparkers/kr.htm > > ______________________________________________________ > Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Sun, 16 Aug 1998 22:42:41 -0700 From: Ross Youngblood Subject: Re: KR: KR-2S Center Section Spar Details Robert Covington wrote: > >I'm about to build my center section spars and after looking over the > >manual and drawings am wondering if there were any updates that I > >missed. It seems to me that the center section is the same as the KR-2. > >However some people have used birch and some mahogany. Was that just > >personal preference? (Birch being stronger but heavier) > > > >Any other details that I'm missing? > > >Richard E. Parker > > Jeanette Rand has been advising builders to use Birch for the spars for > quite a while for the strength gains. The orientation is important. The > grain needs to be running up and down relative to the spars length, that > is, the spar is E-W and the plywood grain goes N-S. > > Robert Covington Whoops... This is news to me. The orientation is the same as the plans for either. I wonder if this is a KR2-S suppliment or if the more recent plans for the KR-2 specify Birch. (My plans were purchased in '88). - -- Ross ------------------------------ Date: Sun, 16 Aug 1998 22:44:22 -0700 From: Ross Youngblood Subject: Re: KR: KR-2S Center Section Spar Details WARRONFLYS@aol.com wrote: > WARRON GRAY WG447 KR2S > WHEN USING BIRCH UNLESS YOUR PLANS WERE UPDATED THE SPACING BETWEEN the > vertical spruce where the spars go through is not wide enough . i had to cut > and fit to get the spars in check the clearances Uhhh... when using Birch... what thickness is Birch available in? I was assuming that a birch ply substitute for the mahagony 3/32" ply would be 3/32" thickness. Is it a thicker stock? Or is there just tolerance build-up? Just curious. - -- Ross ------------------------------ Date: Sun, 16 Aug 1998 22:44:40 -0700 From: Ross Youngblood Subject: Re: KR: please remove me fom your krnet i don't have the time ! Sorry for the delay. - -- Regards Ross Randy & Wanda Teems wrote: > thank you for your time. > ART TEEMS ------------------------------ Date: Sun, 16 Aug 1998 22:47:49 -0700 From: Ross Youngblood Subject: Re: KR: PERRYKOSH or BUST! Ron Lee wrote: > >The hotel situation looks kinda grim. The place I reserved a room > >is only $27.12/night. So either it's a great deal, or it's just a > >cheap motel. (Dan D Motel) -- Thanks to Rick for the post. > > I stayed there last year. It is a small (maybe 25 rooms) facility > but was fine in my opinion. Frankly I would have stayed there if I > knew I could have gotten a ride to/from the airport. I would recommend > a room in the main U-shaped portion. The other side faces some railroad > tracks and I noticed numerous trains during the night. > > Ron Ron, Thanks! Trains are no problem... my house is a short distance from the railroad tracks. It will make me feel at home. Plus after a long day of hanger flying, I will probably snore through anything. -- Ross ------------------------------ Date: Sun, 16 Aug 1998 22:53:13 -0700 From: Ross Youngblood Subject: Re: KR: KR-2S Center Section Spar Details Strojnik was one nifty character. He was a professor at Arizona State I beleive, and lived near where I did in Tempe. I finally met him at an EAA meeting in Mesa, Az, and he was displaying some test glues of plexiglass to other surfaces, using commercially available "super" type glues. He did find one adhesive that looked really promising for bonding plexiglas, but I don't recall what it was. I was impressed that he was researching stuff and sharing it with the chapter... here was this titan of aircraft design, playing with glue like the rest of us... I thought that was terrific... that was about 10 years ago when I just purchased my KR plans, and was trying to figure out how to put everything together. -- Ross HAshraf@aol.com wrote: > In a message dated 98-08-11 23:21:53 EDT, you write: > > << INteresting enough almost all other material I have read said to apply the > plywood shear web at a 45 but not the KR plans! Whats up with that? >> > > Strojnik has an interesting experiment. Grab two edges of a 8.5"x11" paper and > pull it tight (gently). Then introduce some shear by pulling the edges by > moving your hand away from each other. You will see waves forming in the > paper. The grain of the shear web should be such that it resists that. That > would be > > \\\\\\\|fuse|/////// > > as the top spar is in compression and is trying to move into the fuselage. > > I can dig the book up and bring it to the airport if you want. > > Thanks > > Haris > > One side frame done (maybe!) ------------------------------ Date: Sun, 16 Aug 1998 23:06:54 -0700 From: Micheal Mims Subject: Re: KR: KR-2S Center Section Spar Details At 10:44 PM 8/16/98 -0700, you wrote: >> WARRON GRAY WG447 KR2S >> WHEN USING BIRCH UNLESS YOUR PLANS WERE UPDATED THE SPACING BETWEEN the ,vertical spruce where the spars go through is not wide enough . i had to cut and fit to get the spars in check the clearances > > Uhhh... when using Birch... what thickness is Birch available in? I was >assuming that a birch ply substitute for the mahagony 3/32" ply would be 3/32" thickness. Is it a thicker stock? Or is there just tolerance build-up? Just curious. > This one stumped me too Ross, my birch shear webs are 3/32 and slid ever so nicely between the "per plans" vertical members. zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims SP290,..Putting the engine back together now! mailto:mikemims@pacbell.net http://www.geocities.com/CapeCanaveral/Hangar/4136/ Irvine Ca Fax 949.856.9417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------------------ Date: Mon, 17 Aug 1998 02:19:45 EDT From: HAshraf@aol.com Subject: Re: KR: KR-2S Center Section Spar Details In a message dated 98-08-17 01:56:24 EDT, you write: << Strojnik was one nifty character. >> Is he dead? Haris Ashraf ------------------------------ Date: Sun, 16 Aug 1998 23:21:44 -0700 From: Ross Youngblood Subject: Re: KR: Piano hinge material Donald Reid wrote: > Kobus de Wet wrote: > > > > With regard to the wing flexing. As I have full length piano hinges on my > > ailerons and being worried about wing flexing and binding of the ailerons, > > I have done a simple test on my aircraft. I got two guys of 200 Lbs. each > > to sit in the cockpit (A very tight fit I must say) with one moving the > > stick in the lateral plane while I was lifting the wing tip until the wheel > > closes to me came off the ground and then pressing down with all of my 190 > > Lbs. I did this test on both sides and also tried twisting the wingtip. At > > no stage during the test did the wing show any signs of flexing. > > I hate to bring bad news, but this test does not prove anything, except > that you did not observe any flexure under the conditions that you > created. In a real world situation, the wings will deflect under load. > During a maximum G pull up, the deflection will be several inches at the > wing tip. > > I have spoken to one KR pilot who said that his ailerons would bind if > he pulled more than about 2 G's. He said the first time he discovered > it was when he was lining up for a high speed pass. > > In almost every case I can think of (except for the KR and some > ultralights) the hinges are segmented. I am sure that there will be > examples of continuous piano hinge used on ailerons of high speed A/C, > but I don't remember any. > > In my opinion, three or four piano hinge segments, each about six inches > long, would be a much better choice. > > -- > Don Reid > Bumpass, Va. mailto:donreid@erols.com > KR2XL at http://www.erols.com/donreid/kr_page.htm > Ultralights at http://www.erols.com/donreid/usua250.html Hmm, Well, starting with a continious 6' aileron hinge, seems that it would be possible to make some smaller hinges out of this, if binding occured.any binding. I will have to think about this and talk it over with the local Tech Counselor. - -- Ross ------------------------------ Date: Sun, 16 Aug 1998 23:27:08 -0700 From: Ross Youngblood Subject: Re: KR: KR-2S Center Section Spar Details HAshraf@aol.com wrote: > In a message dated 98-08-17 01:56:24 EDT, you write: > > << Strojnik was one nifty character. >> > > Is he dead? > > Haris Ashraf Uhhh... I believe he may still be around, but I'm not sure. Perhaps I should have said "is one nifty character", I thought I heard he had passed away, but I am very likely mistaken. As a primary source of inaccurate information on the web... -- Ross ------------------------------ Date: Sun, 16 Aug 1998 23:36:36 -0700 From: Ross Youngblood Subject: KR: N541RY Progress Report Well, I put the clearcoat on the second wing... have a couple of drips/runs to wet sand out, then put one more coat on this one. It would have been done this weekend, but I decided to ... GO FLYING Instead! I was going to fly up from Corvallis OR to Yakima WA about a 2 hour X-C flight, but the night before departure I got one of those "you must be crazy" weather briefings. We had a small front from Alaska swing down and bring some moisture with it. This resulted in MVFR weather, and the forecast was that it might get worse for Sunday, which was when I was scheduled to return. I started thinking about trying to get home, and be ready to fly down to California for work etc,etc... and decided Saturday not to go at about 1:00, after doing some touch and goes to get current. Sure nuff... after I drove my daughter home from the airport, the sky cleared right up. And Yakima was clear all Saturday. Sunday of course, it was supposed to be worse, and it looked pretty yucky in the morning, but I decided, since I had reserved the plane, I was going to do some X-C today even if it was someplace I'd been before... so I took off, and although the ceiling was reported to be 3,000, it turned out to be 4,000, and raised to 7,000 by my return at 3:00PM. Later today... CLEAR SKYS! My problem appears to be too many years spent in the desert southwest, I'm still trying to figure out these white puffy things out. Flying in the northwest, I have friends that are pretty good scud runners, and they do this without breaking any regulations, I know I checked. I'm hoping that having my KR done later this year will allow me to do some more X-C stuff. I think part of my anxiety was the thought of having to leave a rental plane someplace for a week, paying minimal daily rent. If I had to leave my KR for a week or longer someplace I think I could do that, I would just come back and fly it home later. A rental plane, means more time off work to get it back, or to stay with it... Ugh! Motivation to finish! - -- Regards Ross ------------------------------ Date: Sun, 16 Aug 1998 23:37:59 -0700 From: Ross Youngblood Subject: KR: New Photo I have a new photo of my KR project (From last week) http://www.teleport.com/~rossy/N541RY.htm Weighed in at 590# approx, less rudder, prop, fire-extinguisher, and ELT. -- Ross ------------------------------ Date: Mon, 17 Aug 1998 06:45:32 EDT From: KenikaS@aol.com Subject: Re: KR: KR-2S Center Section Spar Details In a message dated 98-08-17 01:45:24 EDT, you write: << Jeanette Rand has been advising builders to use Birch for the spars for > quite a while for the strength gains. The orientation is important. The > grain needs to be running up and down relative to the spars length, that > is, the spar is E-W and the plywood grain goes N-S. > > Robert Covington Whoops... This is news to me. The orientation is the same as the plans for either. I wonder if this is a KR2-S suppliment or if the more recent plans for the KR-2 specify Birch. (My plans were purchased in '88). -- Ross >> Ross My plans were purchased right after Perry last year ( to update my original late 70's set ) and still call for 3/32" 3 ply mahogany, birch or poplar center. Dennis Steed Salt Lake City, UT ------------------------------ Date: Mon, 17 Aug 1998 09:14:41 EDT From: KR2616TJ@aol.com Subject: Re: KR: (and engines) In a message dated 98-08-16 22:42:08 EDT, you write: << Motorheads, my wife developed a roll film today and there were a few photos from my engine painting ordeal on it. You can see them at: >> Dang Mike those are some serious looking big @#$ parts. After working on my little "poodle" of an engine, I don't know if I've got any wrenches big enough. ------------------------------ Date: Mon, 17 Aug 1998 08:41:00 -0500 (CDT) From: Steven A Eberhart Subject: Re: KR: (and engines) On Mon, 17 Aug 1998 KR2616TJ@aol.com wrote: > In a message dated 98-08-16 22:42:08 EDT, you write: > > << Motorheads, my wife developed a roll film today and there were a few > photos > from my engine painting ordeal on it. You can see them at: >> > > Dang Mike those are some serious looking big @#$ parts. After working on my > little "poodle" of an engine, I don't know if I've got any wrenches big > enough. > Looks like you are keeping up the practice of using K-9 names for our planes. My Sky Terrier, Lougheed's Star Pup and now your Aero Poodle :-) Steve - ------------------------------------- http://www.newtech.com/nlf One test is worth a thousand expert opinions but a thousand opinions are easier to get. --plagiarized from an unknown author Once you have the Coroners report, why keep kicking the poor dead horse --Steve Eberhart, 1998 When once you have tasted flight you will always walk with your eyes turned skyward, for there you have been and there you will always be. --Leonardo da Vinci Legal Disclamer: All information, included in any of my aircraft related correspondence, is strictly food for thought and is in no way intended to imply that they are anything more than ideas requiring additional qualified engineering analysis. ------------------------------ Date: Mon, 17 Aug 1998 07:41:12 -0700 From: Micheal Mims Subject: Re: KR: New Photo At 11:37 PM 8/16/98 -0700, you wrote: >I have a new photo of my KR project (From last week) >http://www.teleport.com/~rossy/N541RY.htm > LOOKS GREAT Ross! Looks like you and I will be sporting close to the same paint job. zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims SP290,..Putting the engine back together now! mailto:mikemims@pacbell.net http://www.geocities.com/CapeCanaveral/Hangar/4136/ Irvine Ca Fax 949.856.9417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------------------ Date: Mon, 17 Aug 1998 07:46:22 -0700 From: Micheal Mims Subject: Re: KR: (and engines) At 09:14 AM 8/17/98 EDT, you wrote: >Dang Mike those are some serious looking big @#$ parts. After working on my >little "poodle" of an engine, I don't know if I've got any wrenches big >enough. > > Yep that would be a FIVE inch bore your looking at. I just hope the power pulses don't shake her apart! I am sure glad I added extra pieces to the motor mount area. zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims SP290,..Putting the engine back together now! mailto:mikemims@pacbell.net http://www.geocities.com/CapeCanaveral/Hangar/4136/ Irvine Ca Fax 949.856.9417 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------------------ Date: Mon, 17 Aug 1998 10:58:43 -0400 From: Harold P Subject: KR: KR-2 FOR SALE !! - --------------6978EBB0CA3CF5DA3271642A Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Hi there ! After flying my tri-gear KR-2 (CGKAV)for the last year having used it to built time, I might consider putting it up for sale if the interest is there. I am hoping to have a shot at flying for the Airservice of the Royal Canadian Mounted Police. It had its maiden flight in Feb.1988 and has since accumulated 432hours TT. It is powered by a 80hp Limbach engine(smooth running). (neat installation) VHF, Loran (?! Ha Ha),X-pndr/Encoder,Intercom,Lights, strobe, always hangered; Dan Diehl wings; Beautiful looking aircraft needing only minor touch ups. Located near Montreal,Quebec,Canada; I have access to a scanner and could send pictures to those interested in having a look at this great flying machine. I am looking to get in the neighbourhood of US $12 000. For more info and/or pictures , contact Harold at mailto:haroldp@sympatico.ca KR-2 CGKAV Montreal PS: One of you had been in contact with me saying that you had seen this a/c with its original builder (Kerry A. Vaughn (KAV) ) and have it on video. - --------------6978EBB0CA3CF5DA3271642A Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit

Hi there !

After flying my tri-gear KR-2 (CGKAV)for the last year having used it to built

time, I might consider putting it up for sale if the interest is there.

I am hoping to have a shot at flying for the Airservice of the Royal Canadian

Mounted Police.

It had its maiden flight in Feb.1988 and has since accumulated

432hours TT. It is powered by a 80hp Limbach engine(smooth running).

(neat installation)

VHF, Loran (?! Ha Ha),X-pndr/Encoder,Intercom,Lights,

strobe, always hangered; Dan Diehl wings;

Beautiful looking aircraft needing only minor touch ups.

Located near Montreal,Quebec,Canada;

I have access to a scanner and could send pictures to

those interested in having a look at this great flying machine.

I am looking to get in the neighbourhood of US $12 000.

For more info and/or pictures , contact

Harold at

mailto:haroldp@sympatico.ca

KR-2 CGKAV
Montreal

PS: One of you had been in contact with me saying that you had seen this
      a/c with its original builder (Kerry A. Vaughn (KAV) ) and have it on video.
 
  - --------------6978EBB0CA3CF5DA3271642A-- ------------------------------ End of krnet-l-digest V2 #137 *****************************