---------------------------------------------------------- RV8-List Digest Archive --- Total Messages Posted Tue 04/03/12: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:48 AM - Tail wiring () 2. 07:22 PM - Re: Tail wiring (Matt Dralle) 3. 08:56 PM - Re: RV8-List Digest: 1 Msgs - 04/02/12 (Speedy11@aol.com) 4. 09:47 PM - Re: Re: RV8-List Digest: 1 Msgs - 04/02/12 (Robin Marks) ________________________________ Message 1 _____________________________________ Time: 11:48:29 AM PST US From: Subject: RV8-List: Tail wiring I=99m planning to run my tail wiring through conduit and would prefer not to use the stuff I got with Van=99s basic wiring kit. Seems awfully bulky to me; I would prefer something smaller in diameter. I=99ll have 2 runs; one each for trim and AeroLED strobe/position light wiring. Any options, including automotive sources? While I=99m at it, I=99m also looking for the best way to route the trim wiring, especially getting through the F811 bulkhead. All suggestions thankfully received. Stan Loer RV-8 QB ________________________________ Message 2 _____________________________________ Time: 07:22:54 PM PST US From: Matt Dralle Subject: RV8-List: Re: Tail wiring At 11:45 AM 4/3/2012 Tuesday, you wrote: >I'm planning to run my tail wiring through conduit and would prefer not to use the stuff I got with Van's basic wiring kit. Seems awfully bulky to me; I would prefer something smaller in diameter. I'll have 2 runs; one each for trim and AeroLED strobe/position light wiring. Any options, including automotive sources? While I'm at it, I'm also looking for the best way to route the trim wiring, especially getting through the F811 bulkhead. All suggestions thankfully received. > >Stan Loer >RV-8 QB Hi Stan, Attached are some pictures of my RV-8 tail cone with the wiring bundle going back to the empennage. I have the GS/VOR antenna coax, ELT antenna coax, two bundles for the dual Magnometers, static air line, and the elevator trim motor and position wires in a bundle along the left longeron at the top. I used spiral wrap to bundle the whole thing together then a few wire ties to hold it in place. Similar to this on Digikey: http://search.digikey.com/us/en/products/SW43%20BK008/ASW43-25-ND/1522507 It comes in a variety of diameters and I use it all over to tie bundles of wire together to make things neater and stronger. If you want to add another wire down the road, just unwrap it add the wire, and wrap it back up. They even have a Teflon version that works great around the engine cylinders. Recommend. Matt - Matt Dralle RV-8 #82880 N998RV "Ruby Vixen" http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel Status: 172+ Hours TTSN - Rebuilding Fuselage After Landing Mishap... RV-6 #20916 N360EM "The Flyer" http://www.mattsrv6.com - Matt's RV-6 Revitalization Log Status: 80+ Hours Since Purchase - Upgrades Complete; Now In Full Flyer Mode ________________________________ Message 3 _____________________________________ Time: 08:56:23 PM PST US From: Speedy11@aol.com Subject: RV8-List: Re: RV8-List Digest: 1 Msgs - 04/02/12 You didn't use a plenum? The only James cowls I've seen on RVs use the James plenum or a custom made one. I suppose one could use baffles, but it seems to defeat the purpose of controlling the airflow so as to reduce drag. I assume you are referring to the transition from intake opening to the inside upper cowl surface.. You could make some ramps to smooth the airflow during transition. If fact, I think you would want to have some type of transition ramp otherwise the airflow will become very turbulent just inside the intake thus creating excessive drag and reducing cooling. I didn't use the James cowl but I made a plenum with upper and lower ramps to direct the airflow. I also made a removable, resizeable air dam in front of #2 cylinder that is easy to adjust to change temps. You can take a look on my web site at rv-8a.net. Stan Sutterfield In a message dated 4/3/2012 3:02:40 A.M. Eastern Daylight Time, rv8-list@matronics.com writes: Does anyone have photos of a Baffle system used with a James cowl? I have o ne on my 8A (works well) but the transition could be a lot better and I am looking for ideas. Thanks, Robin ________________________________ Message 4 _____________________________________ Time: 09:47:50 PM PST US From: Robin Marks Subject: RE: RV8-List: Re: RV8-List Digest: 1 Msgs - 04/02/12 Stan, I am very familiar with your work good (speed) doctor! I had a plenum on 8A. Worked fine but began to eat itself up. I have a FG p lenum on my -10. Hate that one too! I am d.o.n.e with plenums. We swapped out the plenum for a baffle system on the 8A and used the same i nlets from the plenum for the new system. I am MUCH happier with this set u p. Fresh out of the box I am getting great temps and speed with none of the plenum issue (mostly access). And the baffles are not closed to sealed yet . Again glad I mad the change. My problem is that the inlets we built are all FG and they need a bit of re inforcement as one got crushed by a hose clamp and the other is a bit misal igned due the new baffles and a fresh engine. BTW the engine is and 200 Hp IO-360 and it rips! I was looking for any ideas out of the box. I will still continue to review what's out there but I think we have decided to trim back and reinforce ou r units. Make a longer flex transition piece and see how that works out. I have a similar resizable air dam system on both my RV's. Think I got the idea from you... Thanks, Robin From: owner-rv8-list-server@matronics.com [mailto:owner-rv8-list-server@mat ronics.com] On Behalf Of Speedy11@aol.com Sent: Tuesday, April 03, 2012 8:53 PM Subject: RV8-List: Re: RV8-List Digest: 1 Msgs - 04/02/12 You didn't use a plenum? The only James cowls I've seen on RVs use the James plenum or a custom made one. I suppose one could use baffles, but it seems to defeat the purpose of cont rolling the airflow so as to reduce drag. I assume you are referring to the transition from intake opening to the ins ide upper cowl surface.. You could make some ramps to smooth the airflow d uring transition. If fact, I think you would want to have some type of tra nsition ramp otherwise the airflow will become very turbulent just inside t he intake thus creating excessive drag and reducing cooling. I didn't use the James cowl but I made a plenum with upper and lower ramps to direct the airflow. I also made a removable, resizeable air dam in fron t of #2 cylinder that is easy to adjust to change temps. You can take a lo ok on my web site at rv-8a.net. Stan Sutterfield In a message dated 4/3/2012 3:02:40 A.M. Eastern Daylight Time, rv8-list@ma tronics.com writes: Does anyone have photos of a Baffle system used with a James cowl? I have o ne on my 8A (works well) but the transition could be a lot better and I am looking for ideas. Thanks, Robin ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv8-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV8-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv8-list Browse Digests http://www.matronics.com/digest/rv8-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.