---------------------------------------------------------- Avionics-List Digest Archive --- Total Messages Posted Sun 07/25/04: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:17 AM - Transponder testing redux (Ralph E. Capen) 2. 07:40 AM - Re: fouling plugs (Tom Brusehaver) 3. 08:30 AM - Re: Transponder testing redux (Leo J. Corbalis) ________________________________ Message 1 _____________________________________ Time: 07:17:12 AM PST US From: "Ralph E. Capen" Subject: Avionics-List: Transponder testing redux --> Avionics-List message posted by: "Ralph E. Capen" Thanks to all that responded to the initial post - I think that I understand the part of the original posting regarding ATC, standby, and their ability to 'see' me on the ground. This still leaves me with a lack of knowledge of how to ensure that my transponder is responding to interrogations correctly. My airport is within the mode C veil so I'll technically need it even for first flight (that's a ways off too but if I gotta get something fixed - now's the time). Do I need to contact an avionics shop with portable test gear? Removing the radio seems silly since I need to test my system not just the radio. Any takers...... ________________________________ Message 2 _____________________________________ Time: 07:40:53 AM PST US Subject: Re: Avionics-List: fouling plugs From: Tom Brusehaver --> Avionics-List message posted by: Tom Brusehaver I've been told that there is too much lead in 100LL for the O-360's. A couple people have recomended running as much as half lead free gas. Trouble is, where to get it. On Sun, 25 Jul 2004 00:10:23 -0500, Dave Ford wrote: > --> Avionics-List message posted by: "Dave Ford" > > I have an O360A1A that I am intermittently fouling the bottom plugs. I > can rotate the top to bottom, bottom to top and it will work for a > while. The question I have is regarding which plug to use, I mean my > ignition system calls for either RHM38 or RHM40, is there an advantage > to using a hotter plug, which I believe is the RHM40? I recently flew > to a location with engine running fine, landed, restarted after 1/2 hour > and noticed the engine running a little rough. In flight I had a high > EGT on no. 2 cylinder and had to fly at a lower rpm setting to keep > things in the green. When I landed I checked both plugs on no. 2 and > sure enough the bottom plug was wet. Changed to a new plug on the > bottom and went flying, all was well. So will a hotter plug resolve > this issue? > > Dave Ford > RV6 w/FADEC > > ________________________________ Message 3 _____________________________________ Time: 08:30:33 AM PST US From: "Leo J. Corbalis" Subject: Re: Avionics-List: Transponder testing redux --> Avionics-List message posted by: "Leo J. Corbalis" You have to get your transponder checked every 2 years by a certified tech or shop. Put it off until you are almost ready to fly. No point in buying dead time. Worst case repairs could delay you a week or 2. Buy just the manual, antenna ,coax and tray. Do all the wiring now and buy the unit when you are ready to go to the airport. Same for the transceiver. If the vendor balks, there are plenty of others who will gladly sell just the stuff you need and keep your warranty time intact. Most unit failures are in the first few months of operation. Leo Corbalis ----- Original Message ----- From: "Ralph E. Capen" Subject: Avionics-List: Transponder testing redux > --> Avionics-List message posted by: "Ralph E. Capen" > > Thanks to all that responded to the initial post - I think that I understand the part of the original posting regarding ATC, standby, and their ability to 'see' me on the ground. > > This still leaves me with a lack of knowledge of how to ensure that my transponder is responding to interrogations correctly. > My airport is within the mode C veil so I'll technically need it even for first flight (that's a ways off too but if I gotta get something fixed - now's the time). Do I need to contact an avionics shop with portable test gear? Removing the radio seems silly since I need to test my system not just the radio. > > Any takers...... >