From: krnet-bounces@mylist.net To: John Bouyea Subject: KRnet Digest, Vol 346, Issue 142 Date: 9/29/2004 8:59:28 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. Installation of Jabiru 2200 Engine (Barry Kruyssen) 2. Re: G limit (Donald Reid) 3. Didn't flyin (Orma) 4. VW exhaust (Oscar Zuniga) ---------------------------------------------------------------------- Message: 1 Date: Thu, 30 Sep 2004 09:39:11 +1000 From: "Barry Kruyssen" Subject: KR> Installation of Jabiru 2200 Engine To: "KRnet" Message-ID: <000c01c4a67d$87b3b200$7000a8c0@technologyonecorp.com> Content-Type: text/plain; charset="iso-8859-1" Hi all, While you've be having fun at a "THE" gathering I've been installing my engine. Here are some photos, I've not added any comments to the photos yet (they'll come later) http://users.tpg.com.au/barryk/jabiru_engine.htm Back to installing the engine Barry Kruyssen Cairns, Australia RAA 19-3873 kr2@BigPond.com http://users.tpg.com.au/barryk/KR2.htm ------------------------------ Message: 2 Date: Wed, 29 Sep 2004 20:14:56 -0400 From: Donald Reid Subject: Re: KR> G limit To: Wesley Scott ,KRnet Message-ID: <6.1.0.6.2.20040929200555.01d303f8@pop.erols.com> Content-Type: text/plain; charset="us-ascii"; format=flowed At 12:33 PM 9/29/2004, you wrote: >I've just decided I don't trust the Marcy analysis. When he did it, he >assumed the section of the wing inside the fuselage was producing lift >just like the stub wings do. That means that the lift produced by the >outer wings is undercalculated and therefore the bending moment numbers >he calculated are too low. This is a standard assumption in the wing structure analysis, but you didn't understand what he meant. The fuselage generates lift. You simply calculate the wing area that would exist if the fuselage were not there and that is the assumed total lift of the wing/fuselage combination. The bending moment on the wing is outboard of the fuselage. The total lift is applied to the wing outboard of the fuselage and will make the calculation slightly conservative. Making the fuselage wider, provided the wing panel length outboard of the fuselage, will not make the wing any weaker. It will be unaffected. It is the length outboard of the fuselage. Don Reid - donreid "at" erols.com Bumpass, Va Visit my web sites at: AeroFoil, a 2-D Airfoil Design And Analysis Computer Program: http://www.eaa231.org/AeroFoil/index.htm KR2XL construction: http://users.erols.com/donreid/kr_page.htm Aviation Surplus: http://users.erols.com/donreid/Airparts.htm EAA Chapter 231: http://eaa231.org Ultralights: http://usua250.org VA EAA State Fly-in: http://vaeaa.org ------------------------------ Message: 3 Date: Wed, 29 Sep 2004 20:34:53 -0400 From: "Orma" Subject: KR> Didn't flyin To: "KRnet" Message-ID: <000c01c4a685$4e73f560$1e29d445@ROBBINS1> Content-Type: text/plain; charset="iso-8859-1" Hello Net Glad to hear that all the flyers made it home safe. I too had a great time. I especially enjoyed putting faces to all the names on the net. Also thanks for all the encouraging words about the posts that I have been making. By the time you flyers were leaving MVN, I was home in MI. After a couple of days rest I went and talked to Tweety (N110LR) and asked why we didn't fly-in. I was told that It was all my fault, and that Tweety could have made it if I had wanted to. I told Tweety that the engine did not sound just right and Tweety said I just could not hear it's new deep roar because of that noisy wobbly IVO prop, and that Tweety was glad to be rid of it. Well, how's that for an explanation. I listened to the engine with a home made scope and could only hear slightly noisy intake valves on cylinders 1 and 2. There was no other noises. My exhaust used to be on both sides and is now, because of the turbo, located on the passenger side, and makes it sound like that side is coming apart. I did address cooling issues one more time and discovered that my cht sender was allowing gas to leak from the spark plug hole and heat things up at the number one plug. I removed and relocated the sender to one of the head bolts. I added a baffle to the oil cooler and will test fly Tweety tomorrow. During a ground run today, the old Sturba ran 3300 and 35 mp. I'm sure that once I start rolling those numbers will increase. Orma Southfield, MI N110LR celebrating 20 years Flying, flying and more flying ------------------------------ Message: 4 Date: Wed, 29 Sep 2004 19:58:25 -0500 From: "Oscar Zuniga" Subject: KR> VW exhaust To: krnet@mylist.net Message-ID: Content-Type: text/plain; format=flowed Among the photos that John Bouyea posted from the bunch he took at the Gathering, are several of a VW engine setup with a very tight exhaust pipe arrangement. My question is, the exhaust is in a "bullhead tee" arrangement with the fore and aft exhaust streams joining head-on, with a common exit pipe out the bottom. To someone accustomed to thinking about fluid flow, a "bullhead tee" is a no-no, but obviously the exhaust pulses from the two cylinders aren't headed down the pipe toward each other at the same time (or are they?) I'm just wondering if this setup works well or if it was done in the interest of a more compact arrangement with maybe some loss of efficiency. It is certainly simpler to do than a swept-Y setup and I'd like to use it on my 1835 if someone can confirm that it is effective. What I was planning to do on my "KR construction trainer" is shown at http://www.flysquirrel.net/colorscheme.html Thanks. Oscar Zuniga San Antonio, TX ------------------------------ _______________________________________________ See KRnet list details at http://www.krnet.org/instructions.html End of KRnet Digest, Vol 346, Issue 142 *************************************** ================================== ABC Amber Outlook Converter v4.20 Trial version ==================================