---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Thu 06/13/13: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:37 PM - Race Strategy (Cpayne) 2. 01:42 PM - Re: Race Strategy (Richard Hess) 3. 02:44 PM - Re: Race Strategy (Robin Hou) 4. 04:14 PM - Re:Re: Race Strategy (Cpayne) ________________________________ Message 1 _____________________________________ Time: 01:37:40 PM PST US From: Cpayne Subject: Yak-List: Race Strategy I don't know if anyone on the 'list has done any long distance racing but I am going to give the AirVenture Cup a try this year. All of my race experience has been in short sprints, which fits the CJ's capability better than a 400NM event. I have a small aux of 14 gallons, which usually is good for an hour at lower cruise settings. The other tanks are stock (41 gallons). New this year is a "Heavy Metal" class for warbirds. The CJ and Yaks are listed as sub-classes. The good news is that new rules allow a "no penalty" gas stop at designated turn points for limited range aircraft like mine. The bad news is that I still have to do a 212.5 NM leg to get to that gas stop. My strategy is to set prop (M-14P/paddle blade) at 2400rpm, watch the temp gauges and set the throttle to a 24GPH flow. That should yield 160+ knots with my stock 360. That's a lot slower that I used to fly with the old engine, but that one sits in back of the hanger now. Sooo, is there any benefit to climbing over 3000 AGL over 212 NM while sedately motoring along?? Craig Payne ________________________________ Message 2 _____________________________________ Time: 01:42:52 PM PST US Subject: Re: Yak-List: Race Strategy From: Richard Hess true airspeed but need to balance that with wind forecast. Richard Hess President International Jets, Inc. Cell 404-964-4885 -----Original Message----- From: Cpayne Sent: Thu, Jun 13, 2013 4:38 pm Subject: Yak-List: Race Strategy I don't know if anyone on the 'list has done any long distance racing but I am oing to give the AirVenture Cup a try this year. All of my race experience has een in short sprints, which fits the CJ's capability better than a 400NM ev ent. I have a small aux of 14 gallons, which usually is good for an hour at lowe r ruise settings. The other tanks are stock (41 gallons). New this year is a Heavy Metal" class for warbirds. The CJ and Yaks are listed as sub-classes. The ood news is that new rules allow a "no penalty" gas stop at designated turn oints for limited range aircraft like mine. The bad news is that I still ha ve o do a 212.5 NM leg to get to that gas stop. My strategy is to set prop (M-14P/paddle blade) at 2400rpm, watch the temp auges and set the throttle to a 24GPH flow. That should yield 160+ knots wi th y stock 360. That's a lot slower that I used to fly with the old engine, bu t hat one sits in back of the hanger now. Sooo, is there any benefit to climbing over 3000 AGL over 212 NM while seda tely otoring along?? Craig Payne -= - The Yak-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?Yak-List - -======================== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -======================== ________________________________ Message 3 _____________________________________ Time: 02:44:15 PM PST US From: Robin Hou Subject: Re: Yak-List: Race Strategy Hi Craig,What kind of engine is that "old engine" sitting in the back of yo ur hangar?Robin P.S. a friend used to own a CJ with M14B (320hp?) running Chinese prop. He was always faster than other CJ's with 360hp M14P running paddle prop. --- On Thu, 6/13/13, Cpayne wrote: From: Cpayne Subject: Yak-List: Race Strategy I don't know if anyone on the 'list has done any long distance racing but I am going to give the AirVenture Cup a try this year. All of my race experi ence has been in short sprints, which fits the CJ's capability better than a 400NM event. I have a small aux of 14 gallons, which usually is good for an hour at lowe r cruise settings. The other tanks are stock (41 gallons). New this year is a "Heavy Metal" class for warbirds. The CJ and Yaks are listed as sub-clas ses. The good news is that new rules allow a "no penalty" gas stop at desig nated turn points for limited range aircraft like mine. The bad news is tha t I still have to do a 212.5 NM leg to get to that gas stop. My strategy is to set prop (M-14P/paddle blade) at 2400rpm, watch the temp gauges and set the throttle to a 24GPH flow. That should yield 160+ knots w ith my stock 360. That's a lot slower that I used to fly with the old engin e, but that one sits in back of the hanger now. Sooo, is there any benefit to climbing over 3000 AGL over 212 NM while seda tely motoring along?? Craig Payne le, List Admin. ________________________________ Message 4 _____________________________________ Time: 04:14:01 PM PST US From: Cpayne Subject: Yak-List: Re:Re: Race Strategy My "old" (800 hr) engine was leaking oil through the guides. I pulled it off for custom OH when I got the chance last year. It was rebuilt in a Siberian OH facility from a Yak-50 (that's what the Russian logs say). It has polishing and mild porting on the intake and exhaust. Came off the dyno at 372HP. That was before I installed Chinese mags which have centrifugal advance. Throw in auto wiring, electronic ignition on one side, polish the carb and intake plenum, etc, and it turned out to be a powerful runner. With after-market pistons, rings, valves and the like, it should be solid. Craig Payne ------------------------------------------------------------------------------------- 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.