---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Tue 04/28/09: 13 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:22 AM - RPM Unit (shinden33) 2. 10:36 AM - Re: RPM Unit (doug sapp) 3. 10:53 AM - Re: RPM Unit (shinden33) 4. 11:14 AM - Re: Re: RPM Unit (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E) 5. 11:19 AM - Re: RPM Unit (Gill Gutierrez) 6. 11:35 AM - Re: RPM Unit (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E) 7. 12:33 PM - Re: RPM Unit (shinden33) 8. 01:22 PM - Re: Re: RPM Unit (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E) 9. 05:06 PM - Re: RPM Unit (shinden33) 10. 06:32 PM - Baklan Radio Issue (TXYak) 11. 08:40 PM - Re: Baklan Radio Issue (keithmckinley) 12. 10:55 PM - Re: RPM Unit (Mike Beresford) 13. 11:29 PM - Re: Baklan Radio Issue (Nigel Willson) ________________________________ Message 1 _____________________________________ Time: 10:22:02 AM PST US Subject: Yak-List: RPM Unit From: "shinden33" All, Lost my RPM indication on my '52 last weekend. Pulled the cannon plug on the back of the RPM sender apart and did not find any bad connections. Continuity checked the wires to the back of the gauge and they all checked as well. Question 1. There are three pins coming out of the sender and four going into the back of the instrument. Where does the fourth one go? Question 2. Anyone have and RPM sender and how hard is it to replace? N8252 Scott Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241687#241687 ________________________________ Message 2 _____________________________________ Time: 10:36:56 AM PST US Subject: Re: Yak-List: RPM Unit From: doug sapp Did you loose indication in BOTH pits? Doug On Tue, Apr 28, 2009 at 10:21 AM, shinden33 wrote: > > All, > > Lost my RPM indication on my '52 last weekend. Pulled the cannon plug on > the back of the RPM sender apart and did not find any bad connections. > Continuity checked the wires to the back of the gauge and they all checked > as well. > > Question 1. There are three pins coming out of the sender and four going > into the back of the instrument. Where does the fourth one go? > > Question 2. Anyone have and RPM sender and how hard is it to replace? > > N8252 > Scott > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=241687#241687 > > -- Always Yakin, Doug Sapp Phone 509-826-4610 Fax 509-826-3644 ________________________________ Message 3 _____________________________________ Time: 10:53:30 AM PST US Subject: Yak-List: Re: RPM Unit From: "shinden33" Yes. I verified that it was not a single instrument failure. -------- The Defiant Company www.thedefiantcompany.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241694#241694 ________________________________ Message 4 _____________________________________ Time: 11:14:38 AM PST US Subject: RE: Yak-List: Re: RPM Unit From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" The Tach Gen is very easy to replace. Assuming the M-14. Not sure of the Housai, but it probably is close to the same. The Tach Gen on the M-14 has a big bright silver colored ring with little finger type indentations that allows it to be spun right off. You un-spin (new word!) the ring, and pull straight out on the tach gen and out it comes. Take the tach gen shaft and clamp it into an electric drill. Spin the crap out of it and measure the AC voltage coming out. Should be the same voltage on each pin at the same RPM. If not, it is bad. Mark Bitterlich -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of shinden33 Sent: Tuesday, April 28, 2009 1:53 PM Subject: Yak-List: Re: RPM Unit Yes. I verified that it was not a single instrument failure. -------- The Defiant Company www.thedefiantcompany.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241694#241694 ________________________________ Message 5 _____________________________________ Time: 11:19:32 AM PST US From: "Gill Gutierrez" Subject: RE: Yak-List: RPM Unit I had a similar problem with my CJ. Continuity checked ok but problem persisted. I resoldered the connections in the cannon plug and made sure female ends were tight, problem went away. Gill -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of shinden33 Sent: Tuesday, April 28, 2009 10:21 AM Subject: Yak-List: RPM Unit All, Lost my RPM indication on my '52 last weekend. Pulled the cannon plug on the back of the RPM sender apart and did not find any bad connections. Continuity checked the wires to the back of the gauge and they all checked as well. Question 1. There are three pins coming out of the sender and four going into the back of the instrument. Where does the fourth one go? Question 2. Anyone have and RPM sender and how hard is it to replace? N8252 Scott Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241687#241687 ________________________________ Message 6 _____________________________________ Time: 11:35:21 AM PST US Subject: RE: Yak-List: RPM Unit From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" Gill is absolutely correct. More on that: The solder used in those cannon plugs is extremely poor quality and it develops cold fractures very easily. It is the FIRST PLACE TO GO when RPM indications go bad. The wire itself is also very questionable. I resoldered mine.. More than once. Then I said screw it and soldered in high quality Teflon insulated aircraft quality wire to the plug, went back about a foot and used environmental splices to splice back into the Russian wire. Problem gone forever. Then the Tach Gen itself went bad. Came up with the drill method to verify it. This also works with the cannon plug hooked up and driving the actual instruments in the cockpits. Mark Bitterlich -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Gill Gutierrez Sent: Tuesday, April 28, 2009 2:21 PM Subject: RE: Yak-List: RPM Unit I had a similar problem with my CJ. Continuity checked ok but problem persisted. I resoldered the connections in the cannon plug and made sure female ends were tight, problem went away. Gill -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of shinden33 Sent: Tuesday, April 28, 2009 10:21 AM Subject: Yak-List: RPM Unit All, Lost my RPM indication on my '52 last weekend. Pulled the cannon plug on the back of the RPM sender apart and did not find any bad connections. Continuity checked the wires to the back of the gauge and they all checked as well. Question 1. There are three pins coming out of the sender and four going into the back of the instrument. Where does the fourth one go? Question 2. Anyone have and RPM sender and how hard is it to replace? N8252 Scott Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241687#241687 ________________________________ Message 7 _____________________________________ Time: 12:33:22 PM PST US Subject: Yak-List: Re: RPM Unit From: "shinden33" What is voltage output range roughly? -------- The Defiant Company www.thedefiantcompany.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241714#241714 ________________________________ Message 8 _____________________________________ Time: 01:22:21 PM PST US Subject: RE: Yak-List: Re: RPM Unit From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" I really do not remember. More than a few, less than a lot. I'll try to remember to go spin one and see. However, very simply the faster you turn it, the more it will put out, and not by millivolts, but by 10's of volts. Mark -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of shinden33 Sent: Tuesday, April 28, 2009 15:32 Subject: Yak-List: Re: RPM Unit What is voltage output range roughly? -------- The Defiant Company www.thedefiantcompany.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241714#241714 ________________________________ Message 9 _____________________________________ Time: 05:06:57 PM PST US Subject: Yak-List: Re: RPM Unit From: "shinden33" Good enough. I'll give it a shot and see how it goes. Thanks for the gouge all! S -------- The Defiant Company www.thedefiantcompany.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241777#241777 ________________________________ Message 10 ____________________________________ Time: 06:32:37 PM PST US Subject: Yak-List: Baklan Radio Issue From: "TXYak" I have the Baklan Radio in my 52. I just recently got the plane flying and have never had the radio working properly. It transmits great but doesn't receive anything. I have tried a different radio(that does work) and got the same result. I tried a different antenna with the same result. I tried a different amplifier with the same result. The intercom works perfectly and like I said the radio transmissions were reported clear by a friend about 30 miles away. Any suggestions? Chris Keating Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241804#241804 ________________________________ Message 11 ____________________________________ Time: 08:40:11 PM PST US Subject: Yak-List: Re: Baklan Radio Issue From: "keithmckinley" Hey Chris...Keith here.. drop me a line. -------- Keith McKinley 700 HS KFIT Read this topic online here: http://forums.matronics.com/viewtopic.php?p=241840#241840 ________________________________ Message 12 ____________________________________ Time: 10:55:31 PM PST US From: Mike Beresford Subject: Yak-List: Re: RPM Unit Hi all I recently had trouble with my RPM indicators. Also checked wiring continuity, all seemed fine. Turned out that the problem was in the generator itself, it had "lost" a phase. Initial test done by checking the voltage in turn between each pin and the earth. Replaced the generator, problem went away. Thanks to Mark B for his sound advice on that one. A few points, which some of the experts may wish to confirm: - As far as I can make out,the fourth pin on the connector in the cockpit is not used. - Check your wiring layout before disconnecting anything. When I first checked my wiring, I found pin 2 in the engine bay was connected to pin 3 in the cockpit, and pin 3 in the engine bay to pin 2 in the cockpit. I assumed that this was an error, so I connected pin 1 to 1,pin 2 to 2, pin 3 to 3. RPM indicator then proceeded to work backwards! Swapped wires 2 and 3 around, indicators work properly again. - I have been advised by a few people to ensure that the wires are properly screened. You may also want to check the connector plug in the engine bay. Some time back I had erratic indications, sometimes it worked, sometimes it didn't. I found that the insert (bakelite) was loose within the cannon plug, and the pins themselves were loose within the insert. Ss I tightened the plug onto the tacho generator it simply pushed the pins backwards resulting in a very poor contact. Bit of epoxy sorted the problem out. Blue skies Mike --- On Tue, 28/4/09, Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E wrote: > From: Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E > Subject: RE: Yak-List: Re: RPM Unit > To: yak-list@matronics.com > Date: Tuesday, 28 April, 2009, 11:21 PM > I really do not remember. > > More than a few, less than a lot. > > I'll try to remember to go spin one and see. However, > very simply the > faster you turn it, the more it will put out, and not by > millivolts, but by > 10's of volts. > > Mark > > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] > On Behalf Of shinden33 > Sent: Tuesday, April 28, 2009 15:32 > To: yak-list@matronics.com > Subject: Yak-List: Re: RPM Unit > > > What is voltage output range roughly? > > -------- > The Defiant Company > www.thedefiantcompany.com > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=241714#241714 > > > > > > > > > > > ________________________________ Message 13 ____________________________________ Time: 11:29:30 PM PST US From: Nigel Willson Subject: Re: Yak-List: Baklan Radio Issue I had similar problems. Spent a furtune fault finding. In end had to give up due cost, and installed a garmin sl40. Nigel On 29 Apr 2009, at 02:31, "TXYak" wrote: > > I have the Baklan Radio in my 52. I just recently got the plane > flying and have never had the radio working properly. It transmits > great but doesn't receive anything. I have tried a different > radio(that does work) and got the same result. I tried a different > antenna with the same result. I tried a different amplifier with > the same result. The intercom works perfectly and like I said the > radio transmissions were reported clear by a friend about 30 miles > away. Any suggestions? > > Chris Keating > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=241804#241804 > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-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/yak-list Browse Digests http://www.matronics.com/digest/yak-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.