---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Mon 12/22/03: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:53 PM - Re: FW: Horizon P-1000 (TeamGrumman@aol.com) 2. 10:11 PM - Re: Bitchin' (TeamGrumman@aol.com) 3. 10:16 PM - Fw: Ultra Vision lights quit (TeamGrumman@aol.com) 4. 10:19 PM - Re: Simultaneous GG/TG Email Listing (FlyinFever@aol.com) 5. 10:46 PM - Re: Simultaneous GG/TG Email Listing (Geoffrey Hickey) ________________________________ Message 1 _____________________________________ Time: 09:53:14 PM PST US From: TeamGrumman@aol.com Subject: TeamGrumman-List: Re: FW: Horizon P-1000 --> TeamGrumman-List message posted by: TeamGrumman@aol.com In a message dated 12/19/03 05:26:47 PM, pecantiger@ispwest.com writes: > Gangsters, > > I'm chasing a problem with the Horizon P-1000 tachometer. It has started > showing a left mag alert light "on" meaning the P-1000 is not getting a > signal from the left mag. To troubleshoot this, I first checked the > P-1000 connections at the ignition switch... no problem. Then I removed > the P-lead from the left mag and verified continuity from the mag > terminal to the connector pin on the P-1000. I also did the same on the > right mag and get continuity (0 ohms) on both leads to their respective > pins on the connector to the P-1000. In addition, while flying, I see no > indication of mag failure.. All CHT's and EGT's are normal. If I switch > from "both" to either "Left" or "Right" ignition switch position, I see > an increase in all EGT's on my EI UBG-16 engine analyzer. All very > normal. My conclusion was a bad left tachometer within the P-1000 unit > and so I sent it back to Horizon for confirmation/repair. Horizon was > very responsive and called me to say they had it running on their test > bench for 2 hours and it passes all tests. The technician at Horizon, > Mark, suggested I try switching the left and right P-leads at the mags > and see if the problem stays with the left mag alert or if it moves to > show a right mag alert light "on". Went flying and the problem stayed > with the left mag alert light "on". From this, I conclude one of two > possibilities: > 1.=A0 The P-1000 is defective and the bench testing is inadequate > 2.=A0 The loss of signal to the left tachometer within the P-1000 is > caused by an open in the left mag wire or an open in the left tachometer > wire that connects to the left P-lead at the ignition switch terminal. > The condition has to be an open and not a short because a short in the > left P-lead would cause that mag to be off line and I would see a drop > in RPM and increased EGT's on the engine analyzer. > > One thing I forgot to mention.. On startup the tach is working fine with > both left and right mag signals being input to the P-1000. Runup is ok, > too. It takes about 10-15 minutes of flying to get the left mag alert > light "on". So if it is a P lead open condition, it doesn't happen until > some heat soaking is added. > > Does anyone have another direction to go at this or has anyone with a > P-1000 had a similar problem? I don't want to go replacing P-leads or > anything else without a definitive confirmation of what the problem is. > Also, I don't think Horizon would believe the unit is defective and they > can't duplicate the problem, though after 35 years working in cellular > and land-mobile product design and manufacturing areas, I've seen a > number of escaping defects that "just couldn't be"! > > Bob Benenati > Tiger N28839 > > Call Jake (Ron Jacobs) at Horizon and talk to him. Odds are pretty good that he'll be of more help than you can imagine. Gary ________________________________ Message 2 _____________________________________ Time: 10:11:49 PM PST US From: TeamGrumman@aol.com Subject: Re: TeamGrumman-List: Bitchin' --> TeamGrumman-List message posted by: TeamGrumman@aol.com In a message dated 12/20/03 09:50:52 AM, flyv35b@juno.com writes: > I still think they should allow 2700 rpm for takeoff. > > Cliff=A0 A&P/IA > You can select 2700 for takeoff. ________________________________ Message 3 _____________________________________ Time: 10:16:39 PM PST US From: TeamGrumman@aol.com Subject: TeamGrumman-List: Fwd: Ultra Vision lights quit --> TeamGrumman-List message posted by: TeamGrumman@aol.com In a message dated 12/20/03 09:10:01 AM, TeamGrumman writes: > > Sometimes there is a good reason that certain parts are not approved for use > in our planes. > I have the same Ultravision lights under my eyebrow but backed them up with > approved lights, (bulbs).=A0 I didn't like the Ultravision due to inadequate > illumination and complexity of the system (AC transformer, three way switch, > dimmer, back up system, etc.) > > > Rick has a BLACK instrument panel and it absorbs the light from the > UltraVision lights.=A0 I've installed about 20 sets of UltraVision lights=20and his is > the only one with a black panel.=A0 He is also the only one who ever complained > they didn't work. > > Gary > > I guess TeamGrumman@aol.com has been blocked from sending to the Grumman Gang So I'll post this here. From: TeamGrumman@aol.com Subject: Re: Ultra Vision lights quit In a message dated 12/19/03 09:30:16 PM, rpa123@cine.net writes: > Sometimes there is a good reason that certain parts are not approved for > use > in our planes. > I have the same Ultravision lights under my eyebrow but backed them up with > approved lights, (bulbs).=A0 I didn't like the Ultravision due to inadequate > illumination and complexity of the system (AC transformer, three way switch, > dimmer, back up system, etc.) > Rick has a BLACK instrument panel and it absorbs the light from the UltraVision lights. I've installed about 20 sets of UltraVision lights and his is the only one with a black panel. He is also the only one who ever complained they didn't work. Gary In a message dated 12/19/03 09:30:16 PM, rpa123@cine.net writes: Sometimes there is a good reason that certain parts are not approved for use in our planes. I have the same Ultravision lights under my eyebrow but backed them up with approved lights, (bulbs).=A0 I didn't like the Ultravision due to inadequate illumination and complexity of the system (AC transformer, three way switch, dimmer, back up system, etc.) Rick has a BLACK instrument panel and it absorbs the light from the UltraVision lights. I've installed about 20 sets of UltraVision lights and his is the only one with a black panel. He is also the only one who ever complained they didn't work. Gary ________________________________ Message 4 _____________________________________ Time: 10:19:31 PM PST US From: FlyinFever@aol.com Subject: Re: TeamGrumman-List: Simultaneous GG/TG Email Listing --> TeamGrumman-List message posted by: FlyinFever@aol.com In a message dated 12/20/03 08:28:55 AM, TeamGrumman@aol.com writes: > > Don't know if I'm the last one to figure this out or not, but if you send > > an > > email to the Grumman Gang, and Bcc Team Grumman (so that the GG doesn't > see > > whom else you sent the message to) you can send the same email to both > > lists.A0 I've got MS Outlook so I can Bcc.A0 I don't know if you can > do20it > > with yahoo, aol, etc... > > > > Thanks, I think I tried something like that a while ago and it wouldn't > work. > Maybe i did it wrong. > > Gary > > No, I didn't send it wrong, I just tried it again. Mark "Gestapo" Mathews has blocked me from posting to Grumman gang under the screen name of TeamGrumman@aol.com. ________________________________ Message 5 _____________________________________ Time: 10:46:49 PM PST US From: Geoffrey Hickey Subject: Re: TeamGrumman-List: Simultaneous GG/TG Email Listing --> TeamGrumman-List message posted by: Geoffrey Hickey FlyinFever@aol.com wrote: >No, I didn't send it wrong, I just tried it again. Mark "Gestapo" Mathews >has blocked me from posting to Grumman gang under the screen name of >TeamGrumman@aol.com. > > I think he blocks any message with "TeamGrumman" anywhere in the headers, in order to disable cross-posting, and that filter is probably catching your username. - Geoff