---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Tue 08/25/09: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:22 AM - Re: A Series Continentals (kmccune) 2. 06:17 AM - Re: Weight and balance 701 (Bryan Martin) 3. 09:41 AM - Re: Weight and balance 701 (Gary Ray) ________________________________ Message 1 _____________________________________ Time: 04:22:58 AM PST US Subject: Zenith-List: Re: A Series Continentals From: "kmccune" Any updates ? Kevin dpfisher(at)scottsbluff.n wrote: > What is an A-80-8? Is it an A65 converted to 80hp? > > > Hi Steve, > > Yes. An A-80-8 is an 80 HP brother of the A-65. They share most of the > same parts. The key differences are: high compression pistons and extra > oil holes in the rod caps, and the 80 HP engine develops its rated > horsepower at a higher RPM than the A-65. In addition you may also need a > larger carb venturi and a larger load jet. In my case, my field elevation > is 4000 ft. and engine performance degrades about 4% per 1000 ft. so all > my horses are Shetland Ponies and my 80 HP engine will only develop 67 HP > at 4000 ft. With this in mind , I made the venturi larger, ( 1 5/16 in. > ), but used the standard A-65 load jet. > > The conversion is not difficult. Just get a copy of the old original > Continental Parts/Repair manual. It calls out the differences between the > engines. I also balanced, ported, polished and blueprinted my > engine. Balancing is a good thing to do as you'll be running at a higher > RPM, but smoothing out the intake system may have been > counterproductive. According to Archie on the engines list, the 0-200 has > intake passages that are so large that they lose beneficial turbulance. I > assume the same may be true of the A-65 and A-80. Anything you can do to > clean up the exhaust system would of course be beneficial. > > You may also need a different prop to get the most from the 80 HP engine. > > > > Have fun! > > Dave, 701 with A-80-8 Continental, 90% and holding! -------- History is a great teacher if you take time to study it. Steve Bennett Read this topic online here: http://forums.matronics.com/viewtopic.php?p=259443#259443 ________________________________ Message 2 _____________________________________ Time: 06:17:22 AM PST US From: Bryan Martin Subject: Re: Zenith-List: Weight and balance 701 That measurement is probably to the center of mass of the baggage space. You could use two measurements for your two baggage areas if you want to. It could be useful in some situations. On Aug 24, 2009, at 9:06 PM, RURUNY@aol.com wrote: > A friend and I are working on a spreadsheet for W&B for my 701. It > is attached for your enjoyment > > Zenith, on their weight and balance form says the baggage area arm > is 1050mm and the weight is 40 lbs. > Does this include the extended baggage area? My baggage area is > separated by a cargo net. > Do I measure to the center of each area? > > Just finished my oil access panel on the cowl completing construction. > -- Bryan Martin N61BM, CH 601 XL, RAM Subaru, Stratus redrive. do not archive. ________________________________ Message 3 _____________________________________ Time: 09:41:40 AM PST US From: "Gary Ray" Subject: Re: Zenith-List: Weight and balance 701 This spreadsheet is easy to modify for any aircraft. Go to page two to change the flight envelope data points, the datum, arm distances, weights, max fuel, Aircraft Title/Ser# and you are good to go. One big advantage to this one is the W&B is recalculated and graphed several times to show the entire flight. After it is set up you can run several senarios to provoke any extreme loading situations that might be possible or play what if should you change a battery location etc. Gary Ray davgray@sbcglobal.net ----- Original Message ----- From: ruruny@aol.com To: Zenith701801-list@matronics.com ; zenith-list@matronics.com Sent: Monday, August 24, 2009 10:06 PM Subject: Zenith-List: Weight and balance 701 A friend and I are working on a spreadsheet for W&B for my 701. It is attached for your enjoyment Zenith, on their weight and balance form says the baggage area arm is 1050mm and the weight is 40 lbs. Does this include the extended baggage area? My baggage area is separated by a cargo net. Do I measure to the center of each area? Just finished my oil access panel on the cowl completing construction. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith-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/zenith-list Browse Digests http://www.matronics.com/digest/zenith-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.