I had to drill more holes in my KR-2 fire wall. To get access I removed the engine. Each of the five AN6 engine mount bolts had light corrosion in the area where the bolt went through the lumber. The holes had epoxy cured before the bolts were inserted. The engine had been mounted for 30 months. The project remained in my shop the entire time. The fire wall is plans built with .005" stainless steel, fiber frax, fiber frax glue, aircraft grade 1/4" plywood, sitka spruce, and sealed on the aft side with epoxy thinned with acetone. What's going on with this AN bolt corrosion?
Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA smw...@md.metrocast.net ----- Original Message ----- From: <krnet-requ...@mylist.net> To: <kr...@mylist.net> Sent: Sunday, January 31, 2010 12:00 AM Subject: KRnet Digest, Vol 352, Issue 30 Send KRnet mailing list submissions to kr...@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-requ...@mylist.net You can reach the person managing the list at krnet-ow...@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: Latest intake manifold experiment (mbz...@comcast.net) 2. Re: Latest intake manifold experiment (Tim) 3. RE: Latest intake manifold experiment (Dan Heath) 4. RE: Latest intake manifold experiment (Larry Knox) 5. RE: Latest intake manifold experiment (Larry Knox) 6. (no subject) (Pete Klapp) 7. RE: Latest intake manifold experiment (samantha toner) 8. Re: trim servo shielding (Mark Langford) 9. Re: Latest intake manifold experiment (John C Edwards) 10. RE: trim servo shielding (Pete Klapp) 11. RE: (no subject) (Paul & Karen Smith) ---------------------------------------------------------------------- Message: 1 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 08:40:22 +0000 (UTC) From: mbz...@comcast.net Subject: Re: KR> Latest intake manifold experiment To: kr...@mylist.net Message-ID: <393274556.874081264840822214.javamail.r...@sz0088a.emeryville.ca.mail.comcast.net> Content-Type: text/plain; charset=utf-8 In my younger days we used to put aluminum window screening sandwiched between 2 carburetor spacers to help atomize fuel. Theory was that the screen creates micro vortexes and helps with a more even air/fuel mixture distribution to all cylinders. We didn't have a dino machine to test this out, but my guess would be that we gained at least 5hp. This might be worth looking into for the uneven burn problems. ------------------------------ Message: 2 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 01:56:29 -0700 From: "Tim" <t...@telus.net> Subject: Re: KR> Latest intake manifold experiment To: "KRnet" <kr...@mylist.net> Message-ID: <D1D3A28052154CF9B3B198E222B1F54E@timpc> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original We did the same, but sandwiched in between the screen's, was one of Mom's Kotex's and we then called it an....Air Filter :-) CldLk-Tim ----- Original Message ----- From: <mbz...@comcast.net> To: <kr...@mylist.net> Sent: Saturday, January 30, 2010 1:40 AM Subject: Re: KR> Latest intake manifold experiment In my younger days we used to put aluminum window screening sandwiched between 2 carburetor spacers to help atomize fuel. Theory was that the screen creates micro vortexes and helps with a more even air/fuel mixture distribution to all cylinders. We didn't have a dino machine to test this out, but my guess would be that we gained at least 5hp. This might be worth looking into for the uneven burn problems. _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 3 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 07:00:01 -0500 From: "Dan Heath" <da...@windstream.net> Subject: RE: KR> Latest intake manifold experiment To: "'KRnet'" <kr...@mylist.net> Message-ID: <000601caa1a3$c0d73170$42859450$@net> Content-Type: text/plain; charset="iso-8859-1" A concern that I have about that is icing. I think that with all those very small wires, it would be easy for it to ice over. See N64KR at http://KRBuilder.org - Then click on the pics See you at the 2010 - KR Gathering in Richmond, Ky - I39 There is a time for building and a time for FLYING and the time for Flying has begun. Daniel R. Heath - Lexington, SC -----Original Message----- In my younger days we used to put aluminum window screening sandwiched between 2 carburetor spacers to help atomize fuel. ------------------------------ Message: 4 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 07:13:53 -0800 From: "Larry Knox" <la...@lebanair.com> Subject: RE: KR> Latest intake manifold experiment To: "'KRnet'" <kr...@mylist.net> Message-ID: <004301caa1be$d6f24420$84d6cc60$@com> Content-Type: text/plain; charset="us-ascii" We used to do this same trick with our old Chevy dump trucks so they had enough power to get in and out of the silage pits to dump the silage. Don't know how much power we gained on the old 6 cylinder engines but it was enough to do the job. la...@lebanair.com -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of mbz...@comcast.net Sent: Saturday, January 30, 2010 12:40 AM To: kr...@mylist.net Subject: Re: KR> Latest intake manifold experiment In my younger days we used to put aluminum window screening sandwiched between 2 carburetor spacers to help atomize fuel. Theory was that the screen creates micro vortexes and helps with a more even air/fuel mixture distribution to all cylinders. We didn't have a dino machine to test this out, but my guess would be that we gained at least 5hp. This might be worth looking into for the uneven burn problems. _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 5 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 07:19:45 -0800 From: "Larry Knox" <la...@lebanair.com> Subject: RE: KR> Latest intake manifold experiment To: "'KRnet'" <kr...@mylist.net> Message-ID: <004401caa1bf$a8beea30$fa3cbe90$@com> Content-Type: text/plain; charset="iso-8859-1" I think you are right about that. la...@lebanair.com -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of Dan Heath Sent: Saturday, January 30, 2010 4:00 AM To: 'KRnet' Subject: RE: KR> Latest intake manifold experiment A concern that I have about that is icing. I think that with all those very small wires, it would be easy for it to ice over. See N64KR at http://KRBuilder.org - Then click on the pics See you at the 2010 - KR Gathering in Richmond, Ky - I39 There is a time for building and a time for FLYING and the time for Flying has begun. Daniel R. Heath - Lexington, SC -----Original Message----- In my younger days we used to put aluminum window screening sandwiched between 2 carburetor spacers to help atomize fuel. _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 6 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 16:35:28 -0500 From: Pete Klapp <pke...@hotmail.com> Subject: KR> (no subject) To: <kr...@mylist.net> Message-ID: <bay132-w9a943de3426aeb342956dca...@phx.gbl> Content-Type: text/plain; charset="iso-8859-1" Netters I need some advice. I'm presently installing wiring in the aft portion of the fuselage, specifically the trim actuator control wiring to the Ray Allen unit in the elevator and the com coax to the copper foil dipole that will be on the vertical stabilizer. My plan is to run it along the fuselage side using nylon clamps. My question is can I run them together in the same mounting clamps without having an RF interference issue do to close proximity or should they be separated? If separation is required, how far apart? Thanks in advance for any info you can provide. Pete Klapp, building KR-2S N729PK, Canton, Ohio _________________________________________________________________ Hotmail: Free, trusted and rich email service. http://clk.atdmt.com/GBL/go/196390708/direct/01/ ------------------------------ Message: 7 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 22:34:33 +0000 (GMT) From: samantha toner <samantha.jay...@btinternet.com> Subject: RE: KR> Latest intake manifold experiment To: KRnet <kr...@mylist.net> Message-ID: <960274.44632...@web87011.mail.ird.yahoo.com> Content-Type: text/plain; charset=iso-8859-1 Icing occurs on the throttle flag due to the depression of air as it exists the venturi.It wont manifest itself downstream in the manifold as the pressure has equilised --- On Sat, 30/1/10, Dan Heath <da...@windstream.net> wrote: From: Dan Heath <da...@windstream.net> Subject: RE: KR> Latest intake manifold experiment To: "'KRnet'" <kr...@mylist.net> List-Post: krnet@list.krnet.org Date: Saturday, 30 January, 2010, 12:00 A concern that I have about that is icing. I think that with all those very small wires, it would be easy for it to ice over. See N64KR at http://KRBuilder.org - Then click on the pics See you at the 2010 - KR Gathering in Richmond, Ky - I39 There is a time for building and a time for FLYING and the time for Flying has begun. Daniel R. Heath - Lexington, SC -----Original Message----- In my younger days we used to put aluminum window screening sandwiched between 2 carburetor spacers to help atomize fuel. _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 8 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 16:36:42 -0600 From: "Mark Langford" <n5...@hiwaay.net> Subject: Re: KR> trim servo shielding To: "KRnet" <kr...@mylist.net> Message-ID: <3D216B728B3A4E11BCB0CF0BCE77EF5F@base> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Pete Klapp wrote: > I'm presently installing wiring in the aft portion of the fuselage, > specifically the trim actuator control wiring to the Ray Allen unit in the > elevator and the com coax to the copper foil dipole that will be on the > vertical stabilizer. My plan is to run it along the fuselage side using > nylon clamps. My question is can I run them together in the same mounting > clamps without having an RF interference issue do to close proximity or > should they be separated? If separation is required, how far apart? Thanks > in advance for any info you can provide< I would run them on opposite sides. When I transmit some of my trim display's LED indicators light, and sometimes my EIS alarm goes off, and mine are ALREADY on opposite sides of the plane! I guess I need to shield some stuff, but I'm used to it now. Mark Langford N56ML "at" hiwaay.net website at http://www.N56ML.com -------------------------------------------------------- ------------------------------ Message: 9 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 16:50:01 -0800 From: John C Edwards <cte82...@centurytel.net> Subject: Re: KR> Latest intake manifold experiment To: KRnet <kr...@mylist.net> Message-ID: <4b64d3b9.10...@centurytel.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Yes icing,or condensation can and will manifest itself downstream in the intake manifold. The "T" in the intake manifold of updraft/sidedraft manifolds creates a high pressure area where the air/fuel mixture accelerates and bends as it goes around the corner and up into the two intake runners up to the heads like on a VW or Corvair. At that point, the temperature drops, and condensation or icing occurs depending on how close to the exhaust is the the intake manifold and what the undercowl temperature is at that point. Pull the lower cowling off your aircraft if you dont believe me on hot summer day and look at the area just aft of the carb where it enters the "T" of your intake manifold and you will see the condensation form on the outside at the very least. On 1/30/2010 2:34 PM, samantha toner wrote: > Icing occurs on the throttle flag due to the depression of air as it > exists the venturi.It wont manifest itself downstream in the manifold as > the pressure has equilised > --- On Sat, 30/1/10, Dan Heath<da...@windstream.net> wrote: > > > From: Dan Heath<da...@windstream.net> > Subject: RE: KR> Latest intake manifold experiment > To: "'KRnet'"<kr...@mylist.net> > Date: Saturday, 30 January, 2010, 12:00 > > > A concern that I have about that is icing. I think that with all those > very > small wires, it would be easy for it to ice over. > > See N64KR at http://KRBuilder.org - Then click on the pics > See you at the 2010 - KR Gathering in Richmond, Ky - I39 > There is a time for building and a time for FLYING and the time for Flying > has begun. > Daniel R. Heath - Lexington, SC > > -----Original Message----- > > > In my younger days we used to put aluminum window screening sandwiched > between 2 carburetor spacers to help atomize fuel. > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > > ------------------------------ Message: 10 List-Post: krnet@list.krnet.org Date: Sat, 30 Jan 2010 20:39:50 -0500 From: Pete Klapp <pke...@hotmail.com> Subject: RE: KR> trim servo shielding To: <kr...@mylist.net> Message-ID: <bay132-w9ba9ca03a9abf6a8761c7ca...@phx.gbl> Content-Type: text/plain; charset="iso-8859-1" Mark Thanks for the info Pete > From: n5...@hiwaay.net > To: kr...@mylist.net > Subject: Re: KR> trim servo shielding > Date: Sat, 30 Jan 2010 16:36:42 -0600 > > Pete Klapp wrote: > > > I'm presently installing wiring in the aft portion of the fuselage, > > specifically the trim actuator control wiring > > I would run them on opposite sides. When I transmit some of my trim > display's LED indicators light, and sometimes my EIS alarm goes off, and > mine are ALREADY on opposite sides of the plane! I guess I need to shield > some stuff, but I'm used to it now. > > Mark Langford > N56ML "at" hiwaay.net > website at http://www.N56ML.com > -------------------------------------------------------- > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html _________________________________________________________________ Hotmail: Powerful Free email with security by Microsoft. http://clk.atdmt.com/GBL/go/196390710/direct/01/ ------------------------------ Message: 11 List-Post: krnet@list.krnet.org Date: Sun, 31 Jan 2010 14:29:33 +1000 From: "Paul & Karen Smith" <pk.sm...@bigpond.net.au> Subject: RE: KR> (no subject) To: "'KRnet'" <kr...@mylist.net> Message-ID: <20100131042934.EPSO1945.nskntotgx01p.mx.bigpond.com@Desktop1> Content-Type: text/plain; charset="us-ascii" Hi Pete, Rule of thumb is never put noisy wiring (motors, transmitters, ignition) with sensitive wiring (intercom, data, low voltage stuff etc). Comms and Transponder are very noisy when they transmit and will interfere with the position signals of the trim system and may even interfere with the operation. On a similar note elevator trim motor wiring (and flap motors, fuel pumps etc) tend to be a bit noisy so don't run them with your intercom wiring. If you have to run them together shield the elevator trim wiring (they usually aren't) and run a high quality coax. RG58 is only OK for Coms and only over shorter distance. RG400 is better and should be used for transponders or longer comms runs, RG223 is better still. The best option is to run comms along one side and trim along the other. Another note, those self adhesive pads are prone to fall off in time (especially in the Ausie sun). If you must use them, prepare the bond area as you would for any other bonding job ... Clean and abrade the area for maximum mechanical bond. I intend to make little stirrups (bonded in line with the loom) that I can use the zip-ties to mount the loom. To remove the loom simply snip the ties and replace. The stirrups can be easily made by wetting out 2 or 3 layers of BID and then laying this over a drinking straw leaving an inch or so either side flat on a plastic sheet. Once set I cut them into 1/4" strips that, from the side, look like the Omega symbol with elongated sides. Paul Smith Brisbane, AUSTRALIA pk.sm...@bigpond.net.au http://kr2spacemodulator.blogspot.com/ -----Original Message----- I'm presently installing wiring in the aft portion of the fuselage, specifically the trim actuator control wiring to the Ray Allen unit in the elevator and the com coax to the copper foil dipole that will be on the vertical stabilizer. My question is can I run them together in the same mounting clamps without having an RF interference issue do to close proximity or should they be separated? ------------------------------ _______________________________________________ See KRnet list details at http://www.krnet.org/instructions.html End of KRnet Digest, Vol 352, Issue 30 **************************************
