From: krnet-bounces@mylist.net To: John Bouyea Subject: KRnet Digest, Vol 346, Issue 124 Date: 9/17/2004 8:59:30 PM Send KRnet mailing list submissions to krnet@mylist.net To subscribe or unsubscribe via the World Wide Web, visit http://mylist.net/listinfo/krnet or, via email, send a message with subject or body 'help' to krnet-request@mylist.net You can reach the person managing the list at krnet-owner@mylist.net When replying, please edit your Subject line so it is more specific than "Re: Contents of KRnet digest..." Today's Topics: 1. Re: Opening the envelope (Martindale Family) 2. Polishing Canopy (Long) (GavinandLouise) 3. Good Morning KR World (Mark Jones) 4. Gathering Weather Forecast (Mark Jones) 5. Re: Gathering Weather Forecast (larry flesner) 6. tailwheel (larry flesner) 7. Re: tailwheel (larry flesner) 8. tailwheel (larry flesner) 9. Friday off topic Yak flight (Dene Collett (SA)) 10. AN fittings and threads (Jack Cooper) 11. Re: CorvAircraft> AN fittings and threads (Allen Wiesner ) 12. Re: tailwheel springs or not (Dan Heath) 13. Re: AN fittings and threads (Mark Langford) 14. Re: tailwheel springs or not (Mark Langford) 15. Re: AN fittings and threads (Orma) 16. Re: tailwheel springs or not (Orma) 17. Opening the envelope (Orma) 18. Re: tailwheel springs or not (jscott.pilot@juno.com) ---------------------------------------------------------------------- Message: 1 Date: Fri, 17 Sep 2004 17:16:17 +1000 From: "Martindale Family" Subject: Re: KR> Opening the envelope To: "KRnet" Message-ID: <002e01c49c86$3a2e9aa0$75a0fea9@athlon2400> Content-Type: text/plain; charset="iso-8859-1" Orma Did you allow for wind and compensate for density altitude in your airspeed comparision. 35" of manifold pressure at 2500 feet and 3100rpm should really have you moving along. Take care you don't get into the high MP/low RPM engine damaging range. John The Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA phone: 61 2 66584767 email: johnjane@chc.net.au ............The MP was 35". On the takeoff roll, the engine ran up to 31 and the MP stayed put.................. ------------------------------ Message: 2 Date: Fri, 17 Sep 2004 18:29:47 +1000 From: "GavinandLouise" Subject: KR> Polishing Canopy (Long) To: "KR builders and pilots" Message-ID: <002b01c49c90$7e4e4960$0100000a@vic.bigpond.net.au> Content-Type: text/plain; charset="Windows-1252" Here's the latest on polishing my canopy. I bought this canopy from a fellow builder unused for less than half price, Seemed too good to refuse and in my haste, I failed to notice a fair few scratches it got while laying around in his workshop. Fact is when I got it home and out in direct sunlight I was disappointed that I bought it at all. Anyway being the type of person that I am I don't give up easily, and I decided to try polishing out most of the scratches. Here is how I'm going about it. First polish out the heavy (deep)scratches with 2000 grit wet/dry sandpaper. Next I used my 7" sander polisher with a high density foam rubber buffing pad mounted, on the slow speed setting.(Taking extreme care not to over heat the plastic and scorch it) With this pad I used a buffing compound made for plastics, the one I used is made by Sutton, for compound polishing. It's a light blue stick of clay type material and is applied to the wheel while it's spinning. This achieves good results for the scratches but leaves the surface cloudy. After polishing with this material I buffed the surface with a very soft terry towelling cloth to remove any excess buffing compound. Then I take a new and perfectly clean lams wool machine buff pad, and put it on my rubber backing disc on the sander polisher again on slow speed, Buff away merrily with just the plain lamswool and the surface shines beautifully. Next coat the surface with a good quality automotive polishing wax and hand buff off. JOB DONE This method has yielded a surface not as good as new but close to it!!! It looks like a new screen that has been cleaned quite a few times and may not be great flying into the sun. As always try it on something that can't be seen or some scrap. Yet to be tested. As they say results may vary. Gav ------------------------------ Message: 3 Date: Fri, 17 Sep 2004 06:04:35 -0500 From: "Mark Jones" Subject: KR> Good Morning KR World To: "KR Net" Message-ID: <002101c49ca6$1e8d56e0$6401a8c0@wi.rr.com> Content-Type: text/plain; charset="iso-8859-1" Tee minus six and counting. Mark Jones (N886MJ) Wales, WI USA E-mail me at flykr2s@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html ------------------------------ Message: 4 Date: Fri, 17 Sep 2004 06:09:43 -0500 From: "Mark Jones" Subject: KR> Gathering Weather Forecast To: "KR Net" Message-ID: <002a01c49ca6$d5f4a220$6401a8c0@wi.rr.com> Content-Type: text/plain; charset="iso-8859-1" Could it get any better than this...... http://wwwa.accuweather.com/adcbin/public/local_index_6to10day.asp?zipcode=62864&metric=0&partner=8265&traveler=1 Mark Jones (N886MJ) Wales, WI USA E-mail me at flykr2s@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html ------------------------------ Message: 5 Date: Fri, 17 Sep 2004 06:55:15 -0500 From: larry flesner Subject: Re: KR> Gathering Weather Forecast To: KRnet Message-ID: <3.0.6.32.20040917065515.00a14e10@pop.midwest.net> Content-Type: text/plain; charset="us-ascii" >Could it get any better than this...... >http://wwwa.accuweather.com/adcbin/public/local_index_6to10day.asp?zipc >ode= 62864&metric=0&partner=8265&traveler=1 >Mark Jones (N886MJ) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ I feel a yeEEEEEEEEEEE HAAAAAAAAAAAAAAAaaaaaaaa coming on !!!!! Larry Flesner ------------------------------ Message: 6 Date: Fri, 17 Sep 2004 07:19:34 -0500 From: larry flesner Subject: KR> tailwheel To: KRnet Message-ID: <3.0.6.32.20040917071934.007a83c0@pop.midwest.net> Content-Type: text/plain; charset="us-ascii" I was going to just swage the >tailwheel cables straight to the rudder cable, with no springs but a >little slack, as Troy is flying. He swears by it, saying you need all >the tailwheel control you can get. . Mark Langford, Huntsville, Alabama ++++++++++++++++++++++++++++++++++++++++++++++++++++++ Mark, I'm using springs on my tailwheel and I'd swear by that. I guess either way will work if installed correctly. I went with the springs so that any side loads were not transfered directly by hard attachment to the rudder system. I attached my tailwheel cables to the rudder cables inside the fuselage and they exit through thier own fairleads. My rudder cables are loaded by springs attached to the firewall. The tailwheel cables are tensioned with only enough slack to keep from causing the rudder cables to go slack from the tailwheel cable attach point to the rudder. In the 93.5 hours to date I've never discovered any "dead spots" in ground handling, takeoff, or even high speed rollouts. I've got good transition from tailwheel on the ground to tailwheel up and back again. The amount of peddle needed to stear seems to be the same with tail up or tail down. Personally, I'd say the advantage goes to springs. As always, your results may vary.......... Larry Flesner ------------------------------ Message: 7 Date: Fri, 17 Sep 2004 07:30:43 -0500 From: larry flesner Subject: Re: KR> tailwheel To: KRnet Message-ID: <3.0.6.32.20040917073043.00a183b0@pop.midwest.net> Content-Type: text/plain; charset="us-ascii" >The amount of peddle needed to stear seems to be the same with tail up >or tail down. Larry Flesner +++++++++++++++++++++++++++++++++++++++++++++++++++++= I think I ment "steer" ! Isn't "stear" a male cow with his male "cowhood" removed???? OUCH !!!!!! "Rocky mountain osyters" anyone?????????? I think this "Gathering" thing has pushed me over the edge!!!!!!! Larry Flesner ------------------------------ Message: 8 Date: Fri, 17 Sep 2004 08:47:25 -0500 From: larry flesner Subject: KR> tailwheel To: KRnet@mylist.net Message-ID: <3.0.6.32.20040917084725.00a16460@pop.midwest.net> Content-Type: text/plain; charset="us-ascii" >>Larry, >>Yup, you did mean "steer". But the same spelling is also used for the >>cud-chewer. Don't think there is a word spelled "stear". See you next >>Thurs. :o) >>Ed (Spelling "Mom") >>Ed Janssen >>+++++++++++++++++++++++++++++++++++++++++++++++++++++ Thanks Ed (spelling Mom). I guess I lost "directional control" on that one entirely! Thanks for "steering" me straight !!!!!! :-) Larry Flesner ------------------------------ Message: 9 Date: Thu, 16 Sep 2004 23:42:57 +0200 From: "Dene Collett \(SA\)" Subject: KR> Friday off topic Yak flight To: "krnet" Message-ID: <000201c49cea$401ded80$37e5fea9@telkomsa127179> Content-Type: text/plain; charset="iso-8859-1" Hi chaps Well I had to share my experience with someone so here it is. Last Saturday I had the oppertunity to go up for a short flight in a Yak 52 which I found out is 360HP turbo! To say I wasn't prepared for it is an understatement! The power is absolutely awesome on takeoff. We lifted off and the pilot kept her just above the tarmac untill the speed had built up .On reaching the end of the runway he yanked it just about vertical and we climbed like a homesick angel to 1500' and levelled off for a trip down the coast to look at seven whales frolicking just behind the breakers. We did a couple of rolls and the pilot also gave me the chance to experience + 4.5Gs as well as -1.5Gs. + G is ok but - G will get me to throw up eventually I think. I also got about 5 min stick time to get the feel of her before returning to base. For someone who has only experienced about 65 ponies up front, ABSOLUTELY AWESOME!! Needless to say I went straight home and got to work on my plane. Have a constructive weekend Cheers Dene Collett KR2S-RT builder Port Elizabeth South Africa mailto: dene.collett@telkomsa.net P.S: checkout www.whisperaircraft.com ------------------------------ Message: 10 Date: Fri, 17 Sep 2004 17:47:23 -0400 From: "Jack Cooper" Subject: KR> AN fittings and threads To: "Corvair engines for homebuilt aircraft" , "KR builders and pilots" Message-ID: <410-220049517214723250@earthlink.net> Content-Type: text/plain; charset=US-ASCII What is used to tap threads for AN fittings? Are there special AN taps, if so where do I get them? Jack Cooper kr2cooper@earthlink.net Why Wait? Move to EarthLink. ------------------------------ Message: 11 Date: Fri, 17 Sep 2004 18:14:08 -0400 From: "Allen Wiesner " Subject: KR> Re: CorvAircraft> AN fittings and threads To: , "Corvair engines for homebuilt aircraft" Cc: KRnet , Corvair engines for homebuilt aircraft Message-ID: <001801c49d03$a83a9210$0000a398@CPQ69645694259> Content-Type: text/plain; charset="iso-8859-1" >What is used to tap threads for AN fittings? Are there special AN taps, if so where do I get them? The threads for AN fittings are all SAE Fine standard, at least thru -8; all are available at Sears, either individually or as part of sets. 1/8 & 1/4 NPT taps are also available. For Reference: -2 5/16-24 -3 3/8-24 -4 7/16-20 -5 1/2-20 -6 9/16-18 -8 3/4-16 Allen G. Wiesner KR-2SS/TD S/N 1118 65 Franklin Street Ansonia, CT 06401-1240 (203) 732-0508 flashyal@usadatanet.net ------------------------------ Message: 12 Date: Fri, 17 Sep 2004 19:46:04 -0400 (Eastern Standard Time) From: "Dan Heath" Subject: Re: KR> tailwheel springs or not To: "krnet@mylist.net" Message-ID: <414B773C.000001.03684@COMPUTER> Content-Type: Text/Plain; charset="iso-8859-1" Mark, I had compression springs on my first KR and it was just like having a direct connect. I really don't know if that was the problem or it was just me, but when the tail came down, the connection gave me no slack and if I was not straight on, well, it was difficult. I changed out to expansion springs that have some give in them, and no longer had the problem. However you guys with the big motors may need that, but that little tail wheel doesn't really have much grip. I think the direct connect means that you had better be real good. What if you are crabbing to a landing, using the rudder and the tail wheel is in the same orientation? I think you need to be very precise when you really have no slack. And, what Larry said. "There is a time for building and a time for GOING TO THE GATHERING, and the time for building has long since expired." See you in Mt. Vernon - 2004 - KR Gathering http://KRGathering.org See N64KR at http://KR-Builder.org - Then click on the pics Daniel R. Heath - Columbia, SC ------------------------------ Message: 13 Date: Fri, 17 Sep 2004 19:45:58 -0500 From: "Mark Langford" Subject: Re: KR> AN fittings and threads To: "KRnet" Message-ID: <002b01c49d18$dd43cac0$1202a8c0@basement> Content-Type: text/plain; charset="iso-8859-1" Jack Cooper wrote: > What is used to tap threads for AN fittings? Are there special AN taps, if so where do I get them? What's normally done is you tap the hole with an NPT, and then screw an AN adapter into it. Then your AN fittings connect to this AN adpater, which has been screwed into an NPT threaded hole. Their catalog is at http://www.holley.com/Catalogs/EPP2003/EPP1-38.pdf , and the page 8 "technical section" explains all this kind of stuff. Page 30 and 31 show the kinds of adapters I'm talking about. I used Earl's Pro-Lite 350 hose and AN-6 fittings for all of my oil system and fuel system connections. I haven't had a leak of any description yet. I think AN taps are the kind of thing I'd expect a machine shop to do, but I could be wrong. I've never seen of these taps before, if that gives you an idea of how common they aren't. A Google search for AN-6 tap didn't yield anything that would get you there either. Mark Langford, Huntsville, Alabama N56ML "at" hiwaay.net see KR2S project at http://home.hiwaay.net/~langford ------------------------------ Message: 14 Date: Fri, 17 Sep 2004 19:56:27 -0500 From: "Mark Langford" Subject: Re: KR> tailwheel springs or not To: "KRnet" Message-ID: <003501c49d1a$543f1f70$1202a8c0@basement> Content-Type: text/plain; charset="iso-8859-1" Dan Heath wrote: > I think you need to > be very precise when you really have no slack. Troy's has a little slack (about a half inch over the 24" length that's outside the fuselage), which he says may be why his works so well. And like you said, my little tailwheel's probably not very effective with the small amount of weight that I'll have on it anyway. With the turnbuckles I'll be able to add whatever slack is necessary, and in fact, I can easily add springs later as well. It's just that they'd be internal (out of the slipstream) rather than external, out there causing drag. I'll probably be able to show some pictures of this setup before the weekend's over. I'd have been done already but had to have some surgery on my hand Wednesday, so I've been reduced to reading and surfing the web for a few days. In other news, one of the EAA'ers at Moontown suggested I do my test flying at Decatur, which has two intersecting runways, one of them grass, and is surrounded by fields. Sounds perfect to me, and there's an RV builder there with some room in his hangar for me... Mark Langford, Huntsville, Alabama N56ML "at" hiwaay.net see KR2S project at http://home.hiwaay.net/~langford ------------------------------ Message: 15 Date: Fri, 17 Sep 2004 21:23:33 -0400 From: "Orma" Subject: Re: KR> AN fittings and threads To: , "KRnet" Message-ID: <001401c49d1e$1ddd0420$1e29d445@ROBBINS1> Content-Type: text/plain; charset="iso-8859-1" Hello Net The aircraft industry always uses NPT threads to tap into other parts, like the engine case. AN fittings can be found with all the popular NPT threads on one side and the AN flair on the other. Look in the AS&S catalog or any other and you will see that they simply refer to them as pipe thread. Orma Southfield, MI N110LR celebrating 20 years To the gathering or bust ------------------------------ Message: 16 Date: Fri, 17 Sep 2004 21:29:47 -0400 From: "Orma" Subject: Re: KR> tailwheel springs or not To: "KRnet" Message-ID: <001b01c49d1e$fd1a1060$1e29d445@ROBBINS1> Content-Type: text/plain; charset="iso-8859-1" Hello Mark and Net N110LR has no springs. The tail wheel cable is attached to the rudder cable after the cable exits the fuselage. There is a little slack in the tail wheel cable but not much. At higher speeds the tail wheel will skid. I think that this fact has prevented me from ground looping. Orma Southfield, MI N110LR celebrating 20 years To the gathering or bust ------------------------------ Message: 17 Date: Fri, 17 Sep 2004 21:54:20 -0400 From: "Orma" Subject: KR> Opening the envelope To: "KRnet" Message-ID: <002a01c49d22$6ab963c0$1e29d445@ROBBINS1> Content-Type: text/plain; charset="iso-8859-1" Hello again After working all day, I was really to tired to fly and so I decided to go into the pattern and time some take off runs. First I'll have to admit that learning to use to boost is going to take some practice. It was easy when all I had to do was push the mixture and throttle and concentrate on going down the runway straight. I tried not to use full boost and set the waste gate prior to turning onto the active. I guess I pulled too much. The engine went up to 33 and the boost went to 37. This might be because the OAT was less then 70 and the cold air made more power. I was trying to climb out at 80 MPH and because of the strong cross wind ( runway 090 and the wind was 12 knots at 012) I concentrated on aircraft control and not the gauges showing how much power I had. I looked at the ASI and it said 110 Kts and the VSI was over 500. Seeing that made me feel that I could probably climb at 1000 FPM. I made one more take off and this time I did not pull as much boost and again was unable to master a smooth rate of assent. I found that I was only doing 3000 RPM and 31 boost. I pulled the boost knob out a little more and the engine really came to life. All n all the cross wind practice was excellent and knowing that I have more then enough power is a good feeling after all this work. I will continue to fly every day and learn to use this new power as I continue to see what's inside the envelope. Orma Southfield, MI N110LR flying strong after 20 years To the gathering ------------------------------ Message: 18 Date: Fri, 17 Sep 2004 21:57:20 -0600 From: jscott.pilot@juno.com Subject: Re: KR> tailwheel springs or not To: krnet@mylist.net Message-ID: <20040917.215721.1392.0.jscott.pilot@juno.com> Content-Type: text/plain; charset=us-ascii On Fri, 17 Sep 2004 19:56:27 -0500 "Mark Langford" writes: > > Troy's has a little slack (about a half inch over the 24" length that's > outside the fuselage), which he says may be why his works so well. And like > you said, my little tailwheel's probably not very effective with the small > amount of weight that I'll have on it anyway. With the turnbuckles I'll be > able to add whatever slack is necessary, and in fact, I can easily add > springs later as well. It's just that they'd be internal (out of the > slipstream) rather than external, out there causing drag. I'll probably be > able to show some pictures of this setup before the weekend's over. I'd > have been done already but had to have some surgery on my hand Wednesday, so > I've been reduced to reading and surfing the web for a few days. I've found that few pilots have the same preferences in tailwheel steering. I have extension springs and a large amount of slack in the cables going to them. Check out the photos of the tailwheel in the 2002 Gathering photos. I've found that that is generally my preference on most tailwheel planes. When I had them tighter the tailwheel had a tendency to "oversteer", or feel a bit too sensitive for my tastes. I prefer to have the tailwheel just nudge the plane in the right direction at full rudder deflection rather than having the tailwheel yanking the tail back and forth or skidding as I walk the rudder pedals. Your mileage will probably vary. Also the type of tailwheel used as well as the tailwheel geometry can make a big difference in the way it responds. BTW, got the sutures out of the knee today and have enough flexibility to climb into the KR, so should be at the Gathering. Jeff Scott ________________________________________________________________ Get your name as your email address. Includes spam protection, 1GB storage, no ads and more Only $1.99/ month - visit http://www.mysite.com/name today! ------------------------------ _______________________________________________ See KRnet list details at http://www.krnet.org/instructions.html End of KRnet Digest, Vol 346, Issue 124 *************************************** ================================== ABC Amber Outlook Converter v4.20 Trial version ==================================