---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Wed 10/10/07: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:15 AM - Yak 52 engine at cruise (John Graham) 2. 06:52 AM - Re: Yak 52 engine at cruise (A. Dennis Savarese) 3. 06:59 AM - Re: Yak 52 engine at cruise (viperdoc) 4. 04:23 PM - Re: Yak 52 engine at cruise (Craig Payne) 5. 05:54 PM - Re: Re: Yak 50 at cruise (Roger Kemp) ________________________________ Message 1 _____________________________________ Time: 06:15:42 AM PST US From: John Graham Subject: Yak-List: Yak 52 engine at cruise Is there any danger or harm to the engine if I leave the throttle and prop at "7 squared" for extended periods of time while just cruising along? I don't want to foul any plugs, but I have been flying at this setting as it seems to be fairly economical with respect to gph. Thanks, John P. Graham CubFlyer1940@Yahoo.com Cell phone (847) 641-1330 Tonight's top picks. What will you watch tonight? Preview the hottest shows on Yahoo! TV. ________________________________ Message 2 _____________________________________ Time: 06:52:27 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: Yak 52 engine at cruise There is nothing wrong with running the engine at those settings. Take a look at the Russian M14 power setting chart. These settings will give you the most efficient settings. As you will/can see, running the engine "oversquare" is the most efficient power setting in cruise. Dennis ----- Original Message ----- From: "John Graham" Sent: Wednesday, October 10, 2007 8:13 AM Subject: Yak-List: Yak 52 engine at cruise > > Is there any danger or harm to the engine if I leave > the throttle and prop at "7 squared" for extended > periods of time while just cruising along? I don't > want to foul any plugs, but I have been flying at this > setting as it seems to be fairly economical with > respect to gph. > > Thanks, > > John P. Graham > CubFlyer1940@Yahoo.com > Cell phone (847) 641-1330 > > > Tonight's top picks. What will you watch tonight? Preview the hottest > shows on Yahoo! TV. > > > ________________________________ Message 3 _____________________________________ Time: 06:59:41 AM PST US From: "viperdoc" Subject: RE: Yak-List: Yak 52 engine at cruise No, not at all. The harm comes in not watching the cylinder head temps and oil temps. The temps are seldom a problem at 70/700 as long as your gills (shutters/cowl flaps) are appropriately positioned. That engine like 70%, 80%, 60% ect as long as it is not to hot. She almost bullet proof as long as you don't get her to hot and especially if you keep her there. Doc -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of John Graham Sent: Wednesday, October 10, 2007 8:13 AM Subject: Yak-List: Yak 52 engine at cruise Is there any danger or harm to the engine if I leave the throttle and prop at "7 squared" for extended periods of time while just cruising along? I don't want to foul any plugs, but I have been flying at this setting as it seems to be fairly economical with respect to gph. Thanks, John P. Graham CubFlyer1940@Yahoo.com Cell phone (847) 641-1330 Tonight's top picks. What will you watch tonight? Preview the hottest shows on Yahoo! TV. ________________________________ Message 4 _____________________________________ Time: 04:23:32 PM PST US From: "Craig Payne" Subject: Yak-List: Re: Yak 52 engine at cruise And what IAS might you see at a given altitude, using that 70 squared setting? Craig Payne cpayne@joimail.com ________________________________ Message 5 _____________________________________ Time: 05:54:11 PM PST US From: "Roger Kemp" Subject: RE: Yak-List: Re: Yak 50 at cruise 260 kph Doc From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Craig Payne Sent: Wednesday, October 10, 2007 6:23 PM Subject: Yak-List: Re: Yak 52 engine at cruise And what IAS might you see at a given altitude, using that 70 squared setting? Craig Payne cpayne@joimail.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.