---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Wed 01/25/12: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:41 AM - Re: trying to fix spam messages (Thom Riddle) 2. 11:50 AM - Guy in Akron, Ohio with the MarkIII (FIRESTARII) 3. 02:54 PM - Re: Kolb-List Digest: 17 Msgs - 01/24/12 (George Bearden) 4. 07:40 PM - Re: Re: Kolb-List Digest: 17 Msgs - 01/24/12 (Richard Girard) 5. 11:01 PM - Re: Key West Regulator (henry.voris) ________________________________ Message 1 _____________________________________ Time: 05:41:45 AM PST US Subject: Kolb-List: Re: trying to fix spam messages From: "Thom Riddle" Mike, I use a Mac but do not use the Mac's email (postage stamp) mail. I use Google's Gmail and from my experience, it has the best spam filter. My Gmail account did receive two spam messages with your name on it which had links to some pill sales websites but it did not corrupt anything. -------- Thom Riddle Buffalo, NY (9G0) Kolb Slingshot SS-021 Jabiru 2200A #1574 Tennessee Prop 64x32 Truth is what stands the test of experience. - Albert Einstein Read this topic online here: http://forums.matronics.com/viewtopic.php?p=364790#364790 ________________________________ Message 2 _____________________________________ Time: 11:50:11 AM PST US Subject: Kolb-List: Guy in Akron, Ohio with the MarkIII From: "FIRESTARII" In December a fellow Kolber called me to help with his TW sign off and to help him fly off his Phase I hours. I apologize to him as I have looked relentlessly for his contact information and simply cannot find it any where :( I you are reading the posts please give me a call or shoot me an email so I can get in touch with you again. Thanks Seth A. Miller Seville, Ohio Fly Safe and have fun! -------- Low and Slow FireStar II Read this topic online here: http://forums.matronics.com/viewtopic.php?p=364831#364831 ________________________________ Message 3 _____________________________________ Time: 02:54:14 PM PST US From: "George Bearden" Subject: Kolb-List: RE: Kolb-List Digest: 17 Msgs - 01/24/12 > Ground is ground is ground, to paraphrase Gertrude Stein. Welll.. Gertrude Stein is not always right. This concept may have aircraft application but I run into it with ground vehicles mostly... At high frequencies, radio frequencies, electrical current begins to flow along the surfaces of conductors more and more, and less in the interior. When using a ground strap or cable to connect surfaces which are part of a ground-plane for a radio antenna one should consider using a braided copper strap. This has a greatly increased surface area over a solid conductor. When I install a CB on a 4x4 the antenna is typically a ground-plane type. The hood, tailgate and top of the vehicle or the entire vehicle is effectively part of the antenna. If done properly the hood needs to be grounded by a braided strap to the rest of the vehicle. In cases where the antenna is mounted on the tailgate EXTRA care must be made to insure that it has a quality ground to the vehicle body. I think our aircraft frequencies are high enough that our wave length is short enough that our ground planes are small enough that the entire vehicle is not involved... just maybe a metallic disk under the antenna (or an array of copper radials). In those cases no braided strap is necessary. ________________________________ Message 4 _____________________________________ Time: 07:40:28 PM PST US Subject: Re: Kolb-List: RE: Kolb-List Digest: 17 Msgs - 01/24/12 From: Richard Girard Reading and comprehension, George, reading and comprehension. The discussion was about the brown ground wire in the wiring harness, or as Rotax calls it (at least by translation) the mass cable, brown, and to what it can be connected. There was no mention of radios, it was about connecting the Key West regulator. Rick On Wed, Jan 25, 2012 at 4:51 PM, George Bearden wrote: > > > Ground is ground is ground, to paraphrase Gertrude Stein. > > Welll.. Gertrude Stein is not always right. > > This concept may have aircraft application but I run into it with ground > vehicles mostly... > > At high frequencies, radio frequencies, electrical current begins to flow > along the surfaces of conductors more and more, and less in the interior. > When using a ground strap or cable to connect surfaces which are part of a > ground-plane for a radio antenna one should consider using a braided copper > strap. This has a greatly increased surface area over a solid conductor. > > When I install a CB on a 4x4 the antenna is typically a ground-plane type. > The hood, tailgate and top of the vehicle or the entire vehicle is > effectively part of the antenna. If done properly the hood needs to be > grounded by a braided strap to the rest of the vehicle. In cases where the > antenna is mounted on the tailgate EXTRA care must be made to insure that > it > has a quality ground to the vehicle body. > > I think our aircraft frequencies are high enough that our wave length is > short enough that our ground planes are small enough that the entire > vehicle > is not involved... just maybe a metallic disk under the antenna (or an > array > of copper radials). In those cases no braided strap is necessary. > > -- Zulu Delta Mk IIIC Thanks, Homer GBYM It isn't necessary to have relatives in Kansas City in order to be unhappy. - Groucho Marx ________________________________ Message 5 _____________________________________ Time: 11:01:43 PM PST US Subject: Kolb-List: Re: Key West Regulator From: "henry.voris" Ed, You said... " I am planning to attach one end of the brown wire to the engine and the other end to a connector that allows the same brown wire to continue and attach to a screw on the airframe which seems to me like it will work the same as a ground strap." Yup, sounds like that is a dandy groundstrap, it ties the engine to the airframe just fine... And as our pal Rick so rightly pointed out that "a ground is a ground" and connecting the brown wire to the NEG DC terminal of your regulator would do the same (as long as the NEG DC circuit of the regulator grounds to the airframe somewhere...). My brown wire is not a groundstrap... My brown wire carries current from the killswitch to the point where it grounds to the case of the engine. My brown wire connects to the case at the right hand bolt that attaches the coil to the case. If your brown wire connects to the case at that same point... it might be a good idea to check out your killswitch circuit. Make sure your wires aren't crossed. Killswitch is a good thing to have... flight critical. Good Luck, -------- Henry Firefly Five-Charlie-Bravo Do Not Archive Read this topic online here: http://forums.matronics.com/viewtopic.php?p=364862#364862 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-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/kolb-list Browse Digests http://www.matronics.com/digest/kolb-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.