---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Thu 02/20/14: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:27 AM - Re: Re: propeller pull through procedure (Mark Davis) 2. 09:46 AM - Re: Re: propeller pull through procedure (Walter Lannon) 3. 09:52 AM - Re: Re: propeller pull through procedure (gjhagstrom@aol.com) 4. 10:10 AM - Re: Re: propeller pull through procedure (Dr. Robert Schroeder) 5. 10:21 AM - Re: Re: propeller pull through procedure (jblake207@comcast.net) 6. 10:41 AM - Re: Re: propeller pull through procedure (DaBear) 7. 05:24 PM - Yak 50 question (Todd McCutchan) ________________________________ Message 1 _____________________________________ Time: 08:27:13 AM PST US From: "Mark Davis" Subject: Re: Yak-List: Re: propeller pull through procedure Pappy, I think the MMO was used for the reddish tint in the Cubi Special served at the Cubi O'Club. It was hard to detect over the cheap rum. Mark ----- Original Message ----- From: cjpilot710@aol.com To: yak-list@matronics.com Sent: Wednesday, February 19, 2014 8:09 PM Subject: Re: Yak-List: Re: propeller pull through procedure So where does MMO come into to this? Jim "Pappy" Goolsby In a message dated 2/19/2014 7:05:25 P.M. Eastern Standard Time, markdavis@wbsnet.org writes: Jon, I got multiple all expense paid trips to Subic Bay on Carl Vinson to have the opportunity to cross the Shit River into the paradise known as Olongapo...... Mark ----- Original Message ----- From: jblake207@comcast.net To: yak-list@matronics.com Sent: Wednesday, February 19, 2014 3:34 PM Subject: Re: Yak-List: Re: propeller pull through procedure Hey Mark, Was she? Over 18 that is... Jon Blake jblake207@comcast.net ------------------------------------------------------------------------- - From: "Mark Davis" To: yak-list@matronics.com Sent: Wednesday, February 19, 2014 4:29:35 PM Subject: Re: Yak-List: Re: propeller pull through procedure All of this math is causing a major helmet fire! Reminds me of an instructor I had in Schools Command in the Navy who had a useful equation for the young Student Naval Aviators and Student Naval Flight Officers before they went out on liberty in Pensacola. It went like this: B4I4Q RU/18? First person to solve the equation may be eligible to win a free trip across the Shit River in Olongapo, R.P. Mark Davis N44YK P.S. I pull twelve blades on my M-14P to hopefully have cleared the cylinders twice. ----- Original Message ----- From: "Gill Gutierrez" To: Sent: Wednesday, February 19, 2014 2:20 PM Subject: RE: Yak-List: Re: propeller pull through procedure > > This backwards - 720 degrees prop rotation equals 1094 degrees engine > rotation > > Gill > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] On Behalf Of LawnDart > Sent: Wednesday, February 19, 2014 2:12 PM > To: yak-list@matronics.com > Subject: Yak-List: Re: propeller pull through procedure > > > 1 crankshaft rotation = 360 deg. > 1 thermodynamic cycle (4-stroke) = 720 deg of crankshaft rotation. > > M14P prop reduction = 0.658 (prop turns less than crankshaft). > 720 / 0.658 = 1094 deg of prop rotation to complete 1 thermodynamic > 4-stroke > cycle. > 1094 / 180 deg = 6.1 blades (turning one blade of a 2-bladed prop = 180 > deg > of prop rotation). > > Notes: > a) substitute 0.xxx for 0.658 if your prop reduction is different. > b) for a 3-bladed prop, substitute 120 deg for 180 deg. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=419017#419017 > > > > > > > > ======================= href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics .com/Navigator?Yak-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com /Navigator?Yak-List s.matronics.com/">http://forums.matronics.com p://www.matronics.com/contribution">http://www.matronics.com/contribution ________________________________ Message 2 _____________________________________ Time: 09:46:15 AM PST US From: "Walter Lannon" Subject: Re: Yak-List: Re: propeller pull through procedure There seems to be a number of different methods for determining number of rotations to complete a full cycle. Mostly wrong. The key is the Otto cycle itself. It needs two revolutions to complete and has a number of events taking place at very specific points in the cycle. If you stack a number of these cylinders together whether in a line or circle or whatever it becomes clear that there must be a specific interval for those events between cylinders. The design itself indicates that interval is 180 degs. To fully cycle 9 cylinders then requires a crankshaft rotation of 1620 degs. (9X180). 1620/360 = 4.5 revolutions for a direct drive engine. For the M14P: 4.5 X 0.658 X 2 (blades) = 5.922 turns OR 1620 X 0.658 = 1065.96 X 2 = 2132.92/360 = 5.922 turns. For the HS6A the gear ratio is 0.787. The above is for two blades. I hate three blades causes there is always one in the way to hit my head on. Walt From: Todd McCutchan Sent: Wednesday, February 19, 2014 10:59 PM Subject: Re: Yak-List: Re: propeller pull through procedure So I get 9.12 blades for complete rotation (1094/120) which means 10 blades to clear all yes? Todd McCutchan T-34A & Yak-50 Cell: (260) 402-1740 E-mail: todd@fastaircraft.com www.fastaircraft.com On Feb 19, 2014, at 2:12 PM, "LawnDart" wrote: 1 crankshaft rotation = 360 deg. 1 thermodynamic cycle (4-stroke) = 720 deg of crankshaft rotation. M14P prop reduction = 0.658 (prop turns less than crankshaft). 720 / 0.658 = 1094 deg of prop rotation to complete 1 thermodynamic 4-stroke cycle. 1094 / 180 deg = 6.1 blades (turning one blade of a 2-bladed prop = 180 deg of prop rotation). Notes: a) substitute 0.xxx for 0.658 if your prop reduction is different. b) for a 3-bladed prop, substitute 120 deg for 180 deg. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=419017#419017 http======================= ===bsp; - MATRONICS W href="http://forums.matronics.com">http://forums.matronics.com=== ================= http://www.matronics.com/contribution ________________________________ Message 3 _____________________________________ Time: 09:52:00 AM PST US Subject: Re: Yak-List: Re: propeller pull through procedure From: gjhagstrom@aol.com I thought it was handed out at the Eastend Club ?? Gary VF-51 , " Coral Sea" '72- '76 -----Original Message----- From: Mark Davis Sent: Thu, Feb 20, 2014 9:42 am Subject: Re: Yak-List: Re: propeller pull through procedure Pappy, I think the MMO was used for the reddish tint in the Cubi Special serv ed at the Cubi O'Club. It was hard to detect over the cheap rum. Mark ----- Original Message ----- From: cjpilot710@aol.com Sent: Wednesday, February 19, 2014 8:09 PM Subject: Re: Yak-List: Re: propeller pull through procedure So where does MMO come into to this? Jim "Pappy" Goolsby In a message dated 2/19/2014 7:05:25 P.M. Eastern Standard Time, markdavis@ wbsnet.org writes: Jon, I got multiple all expense paid trips to Subic Bay on Carl Vinson to have the opportunity to cross the Shit River into the paradise known as Olongapo...... Mark ----- Original Message ----- From: jblake207@comcast.net Sent: Wednesday, February 19, 2014 3:34 PM Subject: Re: Yak-List: Re: propeller pull through procedure Hey Mark, Was she? Over 18 that is... Jon Blake jblake207@comcast.net From: "Mark Davis" Sent: Wednesday, February 19, 2014 4:29:35 PM Subject: Re: Yak-List: Re: propeller pull through procedure --> Yak-List message posted by: "Mark Davis" All of this math is causing a major helmet fire! Reminds me of an instructor I had in Schools Command in the Navy who had a useful equa tion for the young Student Naval Aviators and Student Naval Flight Officer s before they went out on liberty in Pensacola. It went like this: B4I4Q RU/18? First person to solve the equation may be eligible to win a free trip across the Shit River in Olongapo, R.P. Mark Davis N44YK P.S. I pull twelve blades on my M-14P to hopefully have cleared the cylinders twice. ----- Original Message ----- From: "Gill Gutierrez" Sent: Wednesday, February 19, 2014 2:20 PM Subject: RE: Yak-List: Re: propeller pull through procedure > --> Yak-List message posted by: "Gill Gutierrez" > > This backwards - 720 degrees prop rotation equals 1094 degrees engine > rotation > > Gill > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] On Behalf Of LawnDart > Sent: Wednesday, February 19, 2014 2:12 PM > To: yak-list@matronics.com > Subject: Yak-List: Re: propeller pull through procedure > > > 1 crankshaft rotation = 360 deg. > 1 thermodynamic cycle (4-stroke) = 720 deg of crankshaft rotation .. > > M14P prop reduction = 0.658 (prop turns less than crankshaft). > 720 / 0.658 = 1094 deg of prop rotation to complete 1 thermodynam ic > 4-stroke > cycle. > 1094 / 180 deg = 6.1 blades (turning one blade of a 2-bladed prop = 180 > deg > of prop rotation). > > Notes: > a) substitute 0.xxx for 0.658 if your prop reduction is different. > b) for a 3-bladed prop, substitute 120 deg for 180 deg. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=419017#419017 > > ======================= href="http://www.matronics.com/Navigator?Yak-List">http://www.matronhref ="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/N avigator?Yak-List s.matronics.com/">http://forums.matronics.com p://www.matronics.com/contribution">http://www.matronics.com/contribution href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.c om/Navigator?Yak-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ________________________________ Message 4 _____________________________________ Time: 10:10:45 AM PST US From: "Dr. Robert Schroeder" Subject: RE: Yak-List: Re: propeller pull through procedure The mere mention of "Otto" causes me to return to those troubling sleepless college years and invokes these images: Thanks Walt.I hope you too will have the "I've got a final tomorrow on a subject for which I've yet to get the books and go to the lecture" dreams tonight.I know I will be having. Oh yeah.then there's these 'laws".Damn you Newton! Back to my lowest energy state.just corroding away here in the Bahamas. ras ________________________________ Message 5 _____________________________________ Time: 10:21:18 AM PST US From: jblake207@comcast.net Subject: Re: Yak-List: Re: propeller pull through procedure ________________________________ Message 6 _____________________________________ Time: 10:41:47 AM PST US From: "DaBear" Subject: RE: Yak-List: Re: propeller pull through procedure Same as the number of licks in a tootsie Pop. 2 That=99s all you need. Bear From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Todd McCutchan Sent: Wednesday, February 19, 2014 2:48 PM Subject: Re: Yak-List: Re: propeller pull through procedure Ok. So how many blades for 2 blade & 3 blade to get all 9 cyl for those of us that are math challenged? Todd McCutchan T-34A & Yak-50 Cell: (260) 402-1740 E-mail: todd@fastaircraft.com www.fastaircraft.com On Feb 19, 2014, at 1:20 PM, "Gill Gutierrez" > wrote: > This backwards - 720 degrees prop rotation equals 1094 degrees engine rotation Gill -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of LawnDart Sent: Wednesday, February 19, 2014 2:12 PM Subject: Yak-List: Re: propeller pull through procedure > 1 crankshaft rotation = 360 deg. 1 thermodynamic cycle (4-stroke) = 720 deg of crankshaft rotation. M14P prop reduction = 0.658 (prop turns less than crankshaft). 720 / 0.658 = 1094 deg of prop rotation to complete 1 thermodynamic 4-stroke cycle. 1094 / 180 deg = 6.1 blades (turning one blade of a 2-bladed prop = 180 deg of prop rotation). Notes: a) substitute 0.xxx for 0.658 if your prop reduction is different. b) for a 3-bladed prop, substitute 120 deg for 180 deg. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=419017#419017 http://www.matr==bsp; - MATRONICS WEB FORUMS -ttp://forums.matronics.com">http://forums.matronics.com =; - List Conbsp; -Matt Dralle, List Ads.com/contribution">http://www.matronics.com/contribution http://www.matronics.com/Navigator?Yak-List http://forums.matronics.com http://www.matronics.com/contribution ________________________________ Message 7 _____________________________________ Time: 05:24:42 PM PST US From: "Todd McCutchan" Subject: Yak-List: Yak 50 question Couple of Yak 50 mx questions: 1 - Does anyone know of the best way to get the gear retraction cylinders out of the wings? 2 - What is the preferred covering for the control surfaces? Thanks! Todd McCutchan Fast Aircraft T-34A & Yak-50 Cell - 260.402.1740 Email: todd@fastaircraft.com Skype: tmccutchan Web: www.fastaircraft.com & www.toddmccutchanairshows.com ------------------------------------------------------------------------------------- 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.