---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Mon 08/06/12: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:53 PM - Engine RPM and propeller speed (N642K) 2. 07:41 PM - Re: Engine RPM and propeller speed (Randy) 3. 08:25 PM - Re: Engine RPM and propeller speed (Walter Lannon) 4. 08:25 PM - Re: Engine RPM and propeller speed (N642K) 5. 08:44 PM - Re: Engine RPM and propeller speed (Roger Kemp M.D.) ________________________________ Message 1 _____________________________________ Time: 06:53:42 PM PST US Subject: Yak-List: Engine RPM and propeller speed From: "N642K" I have a digital tach on my M-14B powered CJ. So am I reading engine crank RPM or prop rpm? Are the RPM limits are corrected for the difference between crank and prop speed? Thanks in advance. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=380240#380240 ________________________________ Message 2 _____________________________________ Time: 07:41:11 PM PST US From: "Randy" Subject: RE: Yak-List: Engine RPM and propeller speed What is the tach and what are reading off of? Bear -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of N642K Sent: Monday, August 06, 2012 9:51 PM Subject: Yak-List: Engine RPM and propeller speed I have a digital tach on my M-14B powered CJ. So am I reading engine crank RPM or prop rpm? Are the RPM limits are corrected for the difference between crank and prop speed? Thanks in advance. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=380240#380240 ________________________________ Message 3 _____________________________________ Time: 08:25:06 PM PST US From: "Walter Lannon" Subject: Re: Yak-List: Engine RPM and propeller speed You are reading crankshaft RPM. Walt -----Original Message----- From: N642K Sent: Monday, August 06, 2012 6:51 PM Subject: Yak-List: Engine RPM and propeller speed I have a digital tach on my M-14B powered CJ. So am I reading engine crank RPM or prop rpm? Are the RPM limits are corrected for the difference between crank and prop speed? Thanks in advance. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=380240#380240 ________________________________ Message 4 _____________________________________ Time: 08:25:06 PM PST US Subject: Yak-List: Re: Engine RPM and propeller speed From: "N642K" This is a Horizon Tachometer. This from their website: The P-1000 functions as two fully independent digital tachometers that monitor the signals received from the primary circuits of the aircrafts magnetos. The internal right and left tachometers independently determine engine RPM, which is then average and displayed for the pilot. The superior reliability of the tachometer design is due to the use of two separate magneto signals to generate two identical RPM readings. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=380252#380252 ________________________________ Message 5 _____________________________________ Time: 08:44:23 PM PST US Subject: Re: Yak-List: Engine RPM and propeller speed From: "Roger Kemp M.D." Suspect you are reading the pulses off your P lead but don't know the type of tach and how it is wired Bear. So you should be reading the crank revolutions. Doc Sent from my iPad On Aug 6, 2012, at 9:38 PM, "Randy" wrote: > > What is the tach and what are reading off of? > > Bear > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] On Behalf Of N642K > Sent: Monday, August 06, 2012 9:51 PM > To: yak-list@matronics.com > Subject: Yak-List: Engine RPM and propeller speed > > > I have a digital tach on my M-14B powered CJ. So am I reading engine crank > RPM or prop rpm? Are the RPM limits are corrected for the difference > between crank and prop speed? > > Thanks in advance. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=380240#380240 > > > > > > > > > > > > > > ------------------------------------------------------------------------------------- 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.