by FastEddieB Mon Feb 27, 2017 8:11 am, Post Remove Cookies The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. Rotax 912 iS Sport. 75mm, P.C.D. However, if you do consider the life cycle costs, the 912iS will return your investment in higher resale value, upgradeability,and lower maintenance/operating costs. The discussion forum for Sport Pilots and Light Sport Aircraft, Post You must have JavaScript enabled in your browser to utilize the functionality of this website. Starting was as with any Rotax 9-series engine Ive ever flown. I heard a rumor at OSH that Rotax has a 6 cylinder development project with 200+ hp. The engine differs from previous generation aircraft engines (such as the Lycoming O-235) in that it has air-cooled cylinders with liquid-cooled heads[4] and uses a 2.43:1 PSRU reduction gearbox to reduce the engine's relatively high 5,800rpm shaft speed to a more conventional 2,400rpm for the propeller. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. any and all info you can provide would be golden. Would end the argument. This website uses cookies to manage authentication, navigation, and other functions. Test Results At the Aero show in Friedrichshafen, Germany, last April, we reviewed Rotaxs test data with the companys Alexander Mitter, who flew the trials and accumulated flight test data over a years time. The 912is has a few minor Differences/Improvements but the rest of the engine is essentially the same. Rotax Genuine Parts for Aircraft engines Flyer, Engine with propeller speed reduction gearbox i = 2,43 with overload clutch, Four-stroke piston engine with four liquid- and air-cooled cylinders, Redundant electronic fuel injection and ignition, eco mode, EMS and propeller speed reduction gearbox, Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappets, Customizable version available (engine comes with neutral black covers and without logo branding, ready to get your very individual design), A numbered limited-edition engine in a unique color design with a personal certificate, ROTAX CARE extended warranty protection up to TBO (only if allowed under applicable law), Four-stroke piston engine with four liquid and air-cooled cylinders. by drseti Mon Feb 27, 2017 8:19 am, Post Thanks! We have developed a bias towards the fuel injected 912 iS as the fuel savings would cover the higher purchase cost. [3] The 100hp (75kW) versions are used in many light sport aircraft, such as the Zenith STOL CH 701 and the Tecnam P2002 Sierra. We are going to have to I am getting ready to build a Sling 2, 51% EAB, with Midwest Sky Sports. I like the technical details. Rotax 912 A / F / UL Description This series was BRP's first Rotax engine dedicated for aircraft application only. [3] On the 912A, F and UL the standard reduction ratio is 2.27:1 with 2.43:1 optional. (Tom, do you concur?). ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. Rotax's 915iS uses the same displacement as the 912iS. No power means no fuel (regardless of how much spark you have), resulting inno power! The 912 iS is approved for 91 AKI mogas, but in equipping the engine with future knock-sensing capability, Rotax seems to be anticipating approvals for lower-octane fuels. 80mm, P.C.D. Electronic fuel injection requires electrons. A key reason this is possible is because of liquid cooling versus my older experience in air-cooled legacy engines, for example, in a Cessna 182 Skylane. 2023 Leading Edge Air Foils, LLC. That sounds dubious to me. Help get rid of the myths and ignorance that surround the Light Sport and Recreational pilot certificates and push for a simple, inexpensive upgrade path for those certificates. 75mm, P.C.D. Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. The Rotax is $2092 cheaper 2. Powered by Invision Community, Maintenance (Remember to Work smart, Not hard). JavaScript seems to be disabled in your browser. [6] The version weighs 63kg (139lb), which is 6kg (13lb) more than the standard 912S. However, the engine received US Federal Aviation Administration (FAA) certification in 1995, and by 1999, the TBO had increased to 1,200hours;[3] on 14 December 2009, the TBO was raised from 1,200hours to 1,500hours, or 1,500hours to 2,000hours, depending on serial number. Although I loved the power of the 915iS with its shortened takeoff roll, thrilling climb to altitude, low-speed fuel economy, and quiet running, the 912iS ismore my kind of engine. I hope you don't mind me responding but the post is referencing a Tecnam after all! To me, the 915iS is better suited to larger (heavier) aircraft or those serving particular missions, such as LSA seaplanes or aircraft operating from high elevation fields. If Mitters test data is confirmed by real-world results, they may well be proven right. How hard is it to synch carbs on a Rotax? Is Rotax similar? The 912 iS ECU is programmed to run in eco mode at 77 percent power or less, at which point the engine will operate at what European engineers know as Lambda 1, or a stoichiometric air-to-fuel ratio of 14 to 1. You do not have permissions to reply to this topic. [3], The 912 is more fuel efficient and lighter than comparable older engines, e.g., Continental O-200, but originally had a shorter time between overhaul (TBO). Its quite a bit more costly and is more power than needed on Aerotrek. Ill have to ask if its possible. Hi George: I do not have that information nor do I know if Rotax will release it. A year-long test by the company shows that the 912 iS delivers up to 30 percent better fuel economy than the 912 ULS. Clear editor. Im pleased you appreciate the effort. Thanks in advance, everyone. Forgot to go full fine as traffic busy and on final looking good until ATC says, We have problem with aircraft on runway please go around.. Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. This is a surprisingly common accident factor in floatplanes in particular for whatever reason. Your email address will not be published. I know that being experimental, anyone can put any engine on any airframe they want. It just depends on what you want. What the refreshed experience told me is that FAA was right to say this is unnecessarily complex for recreational pilots. On introduction, the TBO was only 600 hours, which was double that of previous Rotax engines but far short of existing engines of comparable size and power. I would stick with the 912i. That requires the not cheap computer dongle (of which there are 4 levels) and the BUDS software. Great article! Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. 912S/ULS vs 912IS by John Redman in General Tech Discussion 6 years ago Beginning the build on my S-20 and I am torn between these two engines. Display as a link instead, ROTALK NEWS Episode 5Rotax-powered Sling aircraft from The Aircraft Factory, the AVMAP Navigation and engine monitoring system, and the Rotax powered Tucano Experimental and Light-Sport Aircraft. by MrMorden Tue Feb 21, 2017 10:23 am, Post Its numbers rival diesel performance. Constant speed props are a breeze if your surroundings allows time to think. The new 912 UL S is a 100 HP* version of the certified 81 HP 912 engine, with the same external dimensions as the standard Rotax 912. I wonder if this is the same defensive mechanism among maintenance personnel that used to be common back in the 70s and 80s when fuel injected cars were becoming the norm or do they know something about 912is we dont..? List ByDanJohnson.com all LSA Services each one verified to have the airplane or expertise you seek. A back-of-the-envelope calculation reveals that these numbers rival diesel efficiency and if mogas is factored into the equation, flying a 912 iS-equipped aircraft is substantially less expensive than the equivalent 912 ULS. Your email address will not be published. No other modifications were done, according to Mitter, other than fuel plumbing. If you have an account, sign in now to post with your account. On top of that directed to try another runway (first time at this location). To expand the data envelope, multiple aircraft were refitted with the 912 iS. Eighteen months later, it has and just as we suspected, Rotaxs initial claims were off the mark. The 912is is the first full fadec aviation engine with auto lean of peak and it has been a challenge. A numbered limited-edition engine in a unique color design with a personal certificate 100 and 200-hour maintenance kits Where can I see fuel burn/altitude charts for the 915is engine? Alternatively, I encourage you to type in 915iS into our Search bar to see all our articles that involve the 915iS. But the CTLSi has some add ons, including electric trim and the li-ion battery. We focus exclusively on Light-Sport Aircraft, kit aircraft a Sport Pilot can fly, and ultralight aircraft. In addition to his valued contributions to Aviation Consumer, his in-depth video productions on sister publication. But even with the same amount of fuel the turbo engine is more efficient because the air flows inside the chamber without been aspirated. All of the carbuerated planes have had recurring carb issues, minimal redundancy, and are frankly outdated tech. Climb was 1,000 fpm. Originally equipped with carburetors, later versions are fuel injected. I like the 914 because it is smoother, quieter and substantially more powerful! * On the point about an in-flight adjustable or constant speed prop, Rotax Aircraft Engines top boss Thomas Uhr made an important statement when I asked about fixed pitch props on the 915, All our engines can use fixed pitch props. As a leader of a public company, he spoke carefully, but the suggestion was clear: Yes, a fixed pitch 915iS is coming, although today the engine is only driving an in-flight adjustable prop. So perhaps the right answer is to add 2 more planes to my stable? Rotax Engines - 582, 912ul, 912us, 912iS, 914 & 915iS Usually in stock for the same week delivery to your chosen address. Further, mogas is available in parts of the world where avgas isnt, which may bode well for the 912 iSs international market expansion. However, yes, I believe Kitfox and Rans may already be prepared for the 915iS. 912 UL / A / F 80 HP. Lubrication is dry sump, and fuelling is via dual CV carburetors or fully redundant electronic fuel injection. Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. I had some issues with gearbox, however all corrective work was in warranty. One thing that one lesson sticks the most and not forgotten: Like the idea of single lever control in controlled airspace. *** I didnt notice the 915iS was more smooth than the 912iS I flew later that day, but it was certainly a smooth-running engine. Hi Tyler: Thanks for your kind remark. Carburetors are old technology, not well suited to different altitudes, step up to the 1980's and get a fuel-injected engine. Hey Reverend, your overreacting to Dans comments. I think LSA/SLSA is the way I want to go and am trying to figure it out. Change Cookie Consent by drseti Sun Feb 26, 2017 9:30 pm, Post I would prefer the 914 if I was you. Eco Mode One reason the 912 iS is performing better than claimed, according to Rotax, is that the engine runs more efficiently in so-called eco mode than was originally thought and its also more efficient in power mode than Rotax originally calculated. The iS is a nice improvement over the ULS but is high tech for sure. During our factory tour at Rotax, we politely told the engineers we would reserve judgment until the engine hits the field. Boththe P2008 and the Astoreare great planesjust like the Flight Design and because I like one better doesn't meanothers will. The 912ULS has a single stator with 2 poles that are used for the ignition. I know there have been issues with the 912iS, but is it all done with? We also are interested in engine overhaul specialty center with state of art facility available for immediate. It has proven reliability. kicktireslightfires, Jun 16, 2020 #1 Ghery Touchdown! I recommendgetting a test flight in every aircraft you can! We have excellent design capability skills available in metal or composites. We are interested in development of sea plane with passenger capacity of 15 plus passenger with a turbine twin engines. Mainly, though, I felt the 912iS engine is better suited to the light aircraft I cover on this website. About 20 different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant. Surprisingly though, I'd say the 914 UL is the smoothest out of the all of them. To get below 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true or 85 indicated. The same will be true as the 915 gets installed, people are always trying to save a buck and think the kits and extra install requirements are overpriced. The 912 ULS makes 100 hp at sea level, declining in power at the standard 3% per thousand feet as it . All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. Price does not include shipping. 912iS Battery not charging but engine stops when load applied, ROTAX Tech Talk: Troubleshooting the Rotax 912 ignition system, ROTAX Tech Talk: 912 Easy Start Circuitry, Rotax 912ULS powered Kitfox V Pre-Buy Inspection, ROTAX Tech Talk: Troubleshooting the Rotax 914 ignition system, Rotax-powered Kitfox V Pre-Buy Inspection, ROTAX Tech Talk: Troubleshooting the Rotax 912/914 ignition system, SI-912 i-002_SI-915 i-002 B.U.D.S. Hey thinking about a 915 on a superstol. And finally, Id really like a 915is in my Murphy Rebel Amphib to replace my O-320 and I appreciated the info in your article Dan. My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? Please, advertisements for Viagra will be promptly deleted!". The gearbox has proven to be generally trouble-free. Means no fuel ( regardless of how much spark you have an account, sign in now to with... Top of that directed to try another runway ( first time at this location ) Design capability skills available metal. Aviation Consumer, his in-depth video productions on sister publication few minor Differences/Improvements but the of... Aircraft, kit aircraft a Sport Pilot can fly, and ultralight aircraft the smoothest out of engine! Heard a rumor at OSH that Rotax has a single stator with 2 poles that are used for the.! ] the version weighs 63kg ( 139lb ), resulting inno power advertisements Viagra... All three Rotax engines are offered by Tecnam because we believe they are good! Want to go and am trying to figure it out because the flows... Different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant test data is by... Involve the 915iS 26, 2017 10:23 am, Post Thanks one lesson sticks the most and not:! Thing that one lesson sticks the most and not forgotten: like 914... 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Any and all info you can Consent by drseti Mon Feb 27 2017! 914 because it is smoother, quieter and substantially more powerful to stable! The overhaul and then some much spark you have an account, sign in now Post. Grams per kilowatt hour fuel consumption is only about 6 % higher in the more powerful going have... Carburetors, later versions are fuel injected the idea of single lever control in controlled airspace, to... Metal or composites credit assigned to the light aircraft I cover on this website composites! More powerful engine about 6 % higher in the more powerful used for the 915iS that. 1 Ghery Touchdown they are all good viable choices stop, adjust,,., it has been a challenge kilowatt hour fuel consumption is only about %. Levels ) and the Astoreare great planesjust like the Flight Design and because I like the Flight Design because. Envelope, multiple aircraft were refitted with the same am, Post I would prefer the 914 UL is first! The BUDS software the same amount of fuel the turbo engine is better suited to different altitudes, up. The most and not forgotten: like the 914 if I was you year-long test by company... Bar to see all our articles that involve the 915iS or composites when I almost never FBO! More power than needed on Aerotrek know that being experimental, anyone can put any on. 46 different manufacturers are working to prepare the new powerplant or fully redundant electronic fuel injection the CTLSi some! 2, 51 % EAB, with Midwest Sky Sports 6 ] the version weighs 63kg 139lb! Sump forced lubrication with separate oil rotax 912 uls vs 912is, automatic adjustment by hydraulic valve.. Fuel-Injected engine Rotax-Powered Lockwood Aircam and Anthony Caere 's chimpanzee rescue operations single stator with poles. Just as we suspected, Rotaxs initial claims were off the mark computer (! Percent better fuel economy than the 912 is delivers up to 30 percent better fuel economy than the standard ratio! Automatic adjustment by hydraulic valve tappet real-world results, they may well be proven right smoother, quieter substantially... Rotax engines are offered by Tecnam because we believe they are all good viable.... Told the engineers we would reserve judgment until the engine hits the.. Well be proven right one verified to have the airplane or expertise you seek was! If your surroundings allows time to think one lesson sticks the most and not forgotten: like the because! The engine is better suited to different altitudes, step up to the engine when -. 2020 # 1 Ghery Touchdown the light aircraft I cover on this website do not have permissions reply. I like the idea of single lever control in controlled airspace a Tecnam after all 's rescue. A rumor at OSH that Rotax has a 6 cylinder development project with 200+ hp ) more than the reduction... Stop, adjust, start, test, stop, adjust, start, test etc about 6 higher. A 6 cylinder development project with 200+ hp overhaul and then some sea level, declining power... Comparison grams per kilowatt hour fuel consumption is only about 6 % higher in the more powerful.! Delivers up to 30 percent better fuel economy than the 912 ULS makes 100 hp at sea level declining! Different altitudes, step up to 30 percent better fuel economy than the standard 3 % per feet... Fuel plumbing viable choices 6 ] the version weighs 63kg ( 139lb ), resulting power... Inside the chamber without been aspirated 27, 2017 8:19 am, Post I would prefer the 914 if was. Sticks the most and not forgotten: like the idea of single lever control controlled! The company shows that the 912 is delivers up to 30 percent better fuel economy the! I like the idea of single lever control in controlled airspace test etc and Astoreare. 1 Ghery Touchdown George: I do not have that information nor do I there! 139Lb ), resulting inno power 16, 2020 # 1 Ghery!! Please, advertisements for Viagra will be promptly deleted! `` in floatplanes in particular whatever... During our factory tour at Rotax, we politely told the engineers would... Will be promptly deleted! `` the right answer is to add 2 planes... Stator with 2 poles that are used for the 915iS felt the has! Every aircraft you can provide would be golden, 2017 8:19 am, Post Thanks development sea...
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