---------------------------------------------------------- Lightning-List Digest Archive --- Total Messages Posted Sun 08/10/08: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:07 AM - Esqual-Lightning real cruise for best MPG (James, Clive R) 2. 05:45 PM - Re: Esqual-Lightning real cruise for best MPG (Charles Gallagher) 3. 07:07 PM - Re: Esqual-Lightning real cruise for best MPG (Jim Langley) 4. 08:41 PM - Lightning newsletter is online (Jim Langley) ________________________________ Message 1 _____________________________________ Time: 05:07:56 AM PST US Subject: Lightning-List: Esqual-Lightning real cruise for best MPG From: "James, Clive R" As I get nearer to flying my Esqual about I was wondering about the experience of those who cruise around looking for the best MPG?. Buz has explained his approaches either setting a fuel flow or a target cruise speed but generally he's always moving fairly swiftly cause he travels long distances. Has anyone tried testing the speed/fuel flow for optimum MPG? If so what RPM is turning in good figures with a reasonable cruise? Over here in the UK fuel is silly prices, even the unleaded Mogas I run my planes on. Also we can't go for too long before we get to the edge...... If I'm going somewhere but am just enjoying the view and not in any hurry I'll be looking for a speed/fuel burn that is optimum. My Jabiru (SP, short wing long tail) cruises at 95 knots for 14 litres, slowing up drops consumption but she quickly gets nose up and the dragging along means I don't get much improvement on the mpg, certainly not enough to warrant flopping along with the nose in the air. Long winged Jabirus fly at 2100 and get 10 litres an hour. My Esqual doesn't have the spats or leg fairings on yet and has the old Esqual cowlings and runs against a drag 'wall' at full throttle (I can only do this for a moment as it overheats on oil temp). Naturally the top speed will improve when I've done what I can as will the fuel consumption but what would be a target cruise revs?. All the numbers on the tests and other reports are all at fairly high revs, all about showing how fast the planes are. What about 100knots? Rev's? Fuel burn? 110? 95? My Esqual seems to sit in the air nicely even quite slowly courtesy of the wings being a little too long. What do folk get with the Lightning at economy cruise? I do realise that the Jab engine is built to rev more than a conventional aero engine so maybe there's not much to be had for slowing down.... Ta, Clive ________________________________ Message 2 _____________________________________ Time: 05:45:02 PM PST US From: Charles Gallagher Subject: Re: Lightning-List: Esqual-Lightning real cruise for best MPG Clive, this article should answer your question,the address is: http://www. sonexaircraft.com/engines/35_dollar_burger.html . Jab3300 in Sonex with- Aero Carb. The cross county speeds gave 34 us/mpg and 36 out for a Sunday f ly. Keep us posted on your results. Rgs. CRG -- On Sun, 8/10/08, James, Clive R wrote: From: James, Clive R Subject: Lightning-List: Esqual-Lightning real cruise for best MPG Esqual-Lightning real cruise for best MPG As I get nearer to flying my Esqual about I was wondering about the experie nce of those who cruise around looking for the best MPG?. Buz has explained his approaches either setting a fuel flow or a target cru ise speed but generally he's always moving fairly swiftly cause he travels long distances. - Has anyone tried testing the speed/fuel flow for optimum MPG? If so what RP M is turning in good figures with a reasonable cruise? Over here in the UK fuel is silly prices, even the unleaded Mogas I run my planes on. Also we can't go for too long before we get to the edge=85... If I'm going somewhere but am just enjoying the view and not in any hurry I 'll be looking for a speed/fuel burn that is optimum. My Jabiru (SP, short wing long tail) cruises at 95 knots for 14 litres, slo wing up drops consumption but she quickly gets nose up and the dragging alo ng means I don't get much improvement on the mpg, certainly not enough to w arrant flopping along with the nose in the air. Long winged Jabirus fly at 2100 and get 10 litres an hour. My Esqual doesn't have the spats or leg fairings on yet and has the old Esq ual cowlings and runs against a drag 'wall' at full throttle (I can only do this for a moment as it overheats on oil temp). Naturally the top speed wi ll improve when I've done what I can as will the fuel consumption but what would be a target cruise revs?. - All the numbers on the tests and other reports are all at fairly high revs, all about showing how fast the planes are. What about 100knots? Rev's? Fuel burn? 110? 95? My Esqual seems to sit in t he air nicely even quite slowly courtesy of the wings being a little too lo ng. What do folk get with the Lightning at economy cruise? I do realise that the Jab engine is built to rev more than a conventional a ero engine so maybe there's not much to be had for slowing down=85. Ta, Clive =0A=0A=0A ________________________________ Message 3 _____________________________________ Time: 07:07:48 PM PST US From: "Jim Langley" Subject: RE: Lightning-List: Esqual-Lightning real cruise for best MPG Charles. What are the specific advantages of the aero carb besides more economy? Also, from reading the article, it sounds like the guy was adjusting the mixture? Do you do this with the aero carb? Thanks Jim! From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com] On Behalf Of Charles Gallagher Sent: Sunday, August 10, 2008 8:44 PM Subject: Re: Lightning-List: Esqual-Lightning real cruise for best MPG Clive, this article should answer your question,the address is: http://www.sonexaircraft.com/engines/35_dollar_burger.html . Jab3300 in Sonex with Aero Carb. The cross county speeds gave 34 us/mpg and 36 out for a Sunday fly. Keep us posted on your results. Rgs. CRG -- On Sun, 8/10/08, James, Clive R wrote: From: James, Clive R Subject: Lightning-List: Esqual-Lightning real cruise for best MPG As I get nearer to flying my Esqual about I was wondering about the experience of those who cruise around looking for the best MPG?. Buz has explained his approaches either setting a fuel flow or a target cruise speed but generally he's always moving fairly swiftly cause he travels long distances. Has anyone tried testing the speed/fuel flow for optimum MPG? If so what RPM is turning in good figures with a reasonable cruise? Over here in the UK fuel is silly prices, even the unleaded Mogas I run my planes on. Also we can't go for too long before we get to the edge.... If I'm going somewhere but am just enjoying the view and not in any hurry I'll be looking for a speed/fuel burn that is optimum. My Jabiru (SP, short wing long tail) cruises at 95 knots for 14 litres, slowing up drops consumption but she quickly gets nose up and the dragging along means I don't get much improvement on the mpg, certainly not enough to warrant flopping along with the nose in the air. Long winged Jabirus fly at 2100 and get 10 litres an hour. My Esqual doesn't have the spats or leg fairings on yet and has the old Esqual cowlings and runs against a drag 'wall' at full throttle (I can only do this for a moment as it overheats on oil temp). Naturally the top speed will improve when I've done what I can as will the fuel consumption but what would be a target cruise revs?. All the numbers on the tests and other reports are all at fairly high revs, all about showing how fast the planes are. What about 100knots? Rev's? Fuel burn? 110? 95? My Esqual seems to sit in the air nicely even quite slowly courtesy of the wings being a little too long. What do folk get with the Lightning at economy cruise? I do realise that the Jab engine is built to rev more than a conventional aero engine so maybe there's not much to be had for slowing down.. Ta, Clive http://www.mw" target="_blank" href="http://forums.matronics.com">http://forums.matList Contribution "nofollow" target="_blank" href="http://www.matronics.com/contribution" ________________________________ Message 4 _____________________________________ Time: 08:41:02 PM PST US From: "Jim Langley" Subject: Lightning-List: Lightning newsletter is online Well, I am back from Alaska and put the latest newsletter up on the web site with all the rest. Once again, great job Buz and Linda putting things together and thanks to all who contributed. The newsletter can be found at www.jimslightning.com and click on the newsletter link. I also added a page that will log my flight test activities. It is just a table for now, but I will add more information as a progress with the flight testing. As always, any suggestions are welcome. Jim! ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message lightning-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Lightning-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/lightning-list Browse Digests http://www.matronics.com/digest/lightning-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.