---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 03/25/06: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:29 AM - Re: Hand held GPS/NAV. (Sam Marlow) 2. 06:33 AM - Re: Hand held GPS/NAV. (bob noffs) 3. 08:10 AM - Re: Hand held GPS/NAV. (Sam Marlow) 4. 11:41 AM - Battery Cranking Power (DAVID REEL) 5. 02:29 PM - Re: Battery Cranking Power (Brian Lloyd) ________________________________ Message 1 _____________________________________ Time: 05:29:33 AM PST US From: Sam Marlow Subject: Re: AeroElectric-List: Hand held GPS/NAV. --> AeroElectric-List message posted by: Sam Marlow I have a Garmin GPS 89, I would sell, don't use it much anymore. Sam WRBYARS@aol.com wrote: >--> AeroElectric-List message posted by: WRBYARS@aol.com > >Are any of you using, or have had, either of these units that would share >your opinions with me about them? > >Does anyone want to sell their unit? > >Lowrance AIRMAP 2000C > >AvMap EKP 111C > >AvMap EKP 1V > >I would appreciate an immediate response, as we're going to replace the >"Texaco GPS" that we've been using in a few days. > >Thanks >Bill > > > > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 06:33:55 AM PST US From: "bob noffs" Subject: Re: AeroElectric-List: Hand held GPS/NAV. --> AeroElectric-List message posted by: "bob noffs" sam, isnt the lowrance 2000 the one with the biggest screen? a friend mounted one this year in a vfr plane and it is very easy to work and easy to see. it may not be state of the art but has a lot more than i need. its screen is so BIG! at $700 or so it will be my choice in a year when my project is done. bob noffs ----- Original Message ----- From: "Sam Marlow" Sent: Saturday, March 25, 2006 7:22 AM Subject: Re: AeroElectric-List: Hand held GPS/NAV. > --> AeroElectric-List message posted by: Sam Marlow > > > I have a Garmin GPS 89, I would sell, don't use it much anymore. > Sam > > WRBYARS@aol.com wrote: > >>--> AeroElectric-List message posted by: WRBYARS@aol.com >> >>Are any of you using, or have had, either of these units that would share >>your opinions with me about them? >> >>Does anyone want to sell their unit? >> >>Lowrance AIRMAP 2000C >> >>AvMap EKP 111C >> >>AvMap EKP 1V >> >>I would appreciate an immediate response, as we're going to replace the >>"Texaco GPS" that we've been using in a few days. >> >>Thanks >>Bill >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> > > > ________________________________ Message 3 _____________________________________ Time: 08:10:53 AM PST US From: Sam Marlow Subject: Re: AeroElectric-List: Hand held GPS/NAV. --> AeroElectric-List message posted by: Sam Marlow I think your right, but Garmin has some new products worth looking into! bob noffs wrote: >--> AeroElectric-List message posted by: "bob noffs" > >sam, > isnt the lowrance 2000 the one with the biggest screen? a friend mounted >one this year in a vfr plane and it is very easy to work and easy to see. it >may not be state of the art but has a lot more than i need. its screen is so >BIG! at $700 or so it will be my choice in a year when my project is done. > bob noffs >----- Original Message ----- >From: "Sam Marlow" >To: >Sent: Saturday, March 25, 2006 7:22 AM >Subject: Re: AeroElectric-List: Hand held GPS/NAV. > > > > >>--> AeroElectric-List message posted by: Sam Marlow >> >> >>I have a Garmin GPS 89, I would sell, don't use it much anymore. >>Sam >> >>WRBYARS@aol.com wrote: >> >> >> >>>--> AeroElectric-List message posted by: WRBYARS@aol.com >>> >>>Are any of you using, or have had, either of these units that would share >>>your opinions with me about them? >>> >>>Does anyone want to sell their unit? >>> >>>Lowrance AIRMAP 2000C >>> >>>AvMap EKP 111C >>> >>>AvMap EKP 1V >>> >>>I would appreciate an immediate response, as we're going to replace the >>>"Texaco GPS" that we've been using in a few days. >>> >>>Thanks >>>Bill >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> > > > > > > > > > ________________________________ Message 4 _____________________________________ Time: 11:41:10 AM PST US From: "DAVID REEL" Subject: AeroElectric-List: Battery Cranking Power --> AeroElectric-List message posted by: "DAVID REEL" I took some measurements today because my Panasonic LCRD1217P battery cranking power seems marginal on cold, 45 degree, days with my O360A1A and SkyTek permanent magnet starter. I saw 5.5 to 6.5v from the starter side of the starter relay to a stud on the vaccum pad of the engine accessory case. I also saw 5.5 to 6.5 v from the battery + terminal to airframe ground. The battery was fully charged and measured 12.8v and was new. Assuming the battery - terminal to airframe ground connection is good, it's new, and that about 200a is being drawn by the starter, this gives a 25 milliohm internal battery resistance to explain the 6 volt drop on starting. The specs claim the battery has 12 milliohm resistance at 77 degrees. Would the 30 degree temperature drop be enough to reasonably explain this big increase in internal resistance? Could the starter be taking 400a? When the starter would stall, the battery voltage dropped to about 4.5v. Dave Reel - RV8A ________________________________ Message 5 _____________________________________ Time: 02:29:39 PM PST US From: Brian Lloyd Subject: Re: AeroElectric-List: Battery Cranking Power --> AeroElectric-List message posted by: Brian Lloyd DAVID REEL wrote: > --> AeroElectric-List message posted by: "DAVID REEL" > > I took some measurements today because my Panasonic LCRD1217P battery cranking power seems marginal If you want to see if your battery is holding up under cranking current, you need to measure the voltage on the battery terminals. If you are looking for losses, you need to measure the voltage on the starter itself. You need BOTH measurements to figure voltage drop. There are inexpensive meters that you just hold against the hot lead from battery to starter that will show starter current draw. You should be able to get one at a well-stocked auto parts store. With those three measurements in hand you can get a really good feel for now your battery and starting system are performing. -- Brian Lloyd 361 Catterline Way brian-yak at lloyd dot com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . - Antoine de Saint-Exupery