The addition of a controllable pitch propeller may require a single lever control, at present a single lever control is not required. I found the engine to fly flawlessly in my experience and powerfully! Fuel consumption was higher than I expected, but speed was also higher. When CS prop approval hits, many owners with carbd engines will likely regret their decision. Hi Tyler: Thanks for your kind remark. As you can see in the nearby images, it provides, among other information, a percentage of throttle, fuel burn, and engine revolutions plus prop speed expressed via manifold pressure. or simplicity? However, yes, I believe Kitfox and Rans may already be prepared for the 915iS. industrial art! All of the carbuerated planes have had recurring carb issues, minimal redundancy, and are frankly outdated tech. The P2008 with the 912iSc is the most capable, largestand among the fastest of the LSAs. The new Sport Pilot rule makes flying affordable! The 912ULS has a single stator with 2 poles that are used for the ignition. Thanks! That would be sweet! Change Cookie Consent Soon after advancing the throttle, I noticed greater acceleration but two other parameters were more obvious. The single lever requirement is what caused the altitude compensated carbs to be implemented versus amixture control so it is likely the FAA will remain steadfast on this requirement. Having said that I chose FD 3 times in a row for some particular reason! All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. Got it, thanks for clarifying. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. And, there were a lot of SBs on the 912 iS early on. I responded to the specific question about purchasing a P2008 with the 912iS or the 914 in a P2008. It just depends on what you want. We have been conned into the cheap bolt on turbo extra power. About 20 different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant. We also are interested in engine overhaul specialty center with state of art facility available for immediate. It features liquid-cooled cylinder heads and air-cooled cylinders. Customer Service Information Report (CSIR). I had some issues with gearbox, however all corrective work was in warranty. Greaser! The Rotax 912 series engine powers dozens of types of light sport aircraft, and is widely considered one of the most reliable reciprocating engines available today. Thanks for reading and watching! Rotaxs 915iS uses the same displacement as the 912iS. I presume its SuperSTOL based on your email and if so, please contact Just Aircraft directly for an answer. by jetcat3 Sun Feb 26, 2017 9:21 pm, Post Boththe P2008 and the Astoreare great planesjust like the Flight Design and because I like one better doesn't meanothers will. Obviously, the cost savings for owners using mogas in the Rotax enginesand many dowill be less. [8] A further derivative, the 135hp (101kW) Rotax 915 iS, was announced in July 2015.[9]. We expect the 912 iS overhaul costs to be higher than the ULS, but we dont yet know how much higher. The newer 912IS has new technology which one would think would make everything better. In a four-cylinder, high-RPM geared engine, that sounded like an overpromise. Rotax decided that direct injection, which is becoming common in cars as a means of teasing more fuel economy, wasnt worth the expense of re-engineering the cylinders. 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. Forgive my ignorance, but if a 912 ULS or 914 UL engine loses electrical power, what happens to the functionality of these carbureted engines? Regardless all the electrical power to run the engine comes from the engine. You can have separate throttle and mixture controls. Turbo exhaust failure makes for a great blow torch. Production started in March 2012 and the engine has a 2000-hour recommended time-between-overhaul to start. You cannot paste images directly. 912 UL / A / F 80 HP. If Mitters test data is confirmed by real-world results, they may well be proven right. We are about 90 percent done and 90 percent to go. 912 ULS | S 100 HP Engine with the best-in-class power-to-weight ratio. I have also reported that the agency made errors previously, such as demanding reciprocating engines (thereby inadvertently eliminating electric), and we are working to find remedies. The 914 cruises at 35 inches manifold continuous. We live in the KMNE/KDTO area and seek advice. The 912ULS is a well proven engine at a low price. 2:43:1 Gear Reduction, Electric Start and Engine Mount. Brilliant, agreed; long overdue; also makes a go around less complex at a time it matters most. Required fields are marked *. Stress is actually a little less therefore with the turbo engine, he said. Ill have to ask if its possible. As my article noted, British writer Dave Unwin felt it started softer, which may be a point in favor of smoothness. It does come with a few costs, as did the 912iS fuel injected engine compared to the 912ULS carbureted engine. 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. 912iS. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Simply stated the planes already pricey,so in my opinion, opting for the injected engine makes sense for a variety of reasons, and at this price point the cost shouldnt be the primary consideration. Hi Drew: Thanks for your kind words. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. The Rotax 912 series is well regarded for its reliability and efficiency and is primarily targeted as . The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. With the 912i my CT would be 127+ kts top speed. 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.. You have allowed cookies to be placed on your computer. You have declined cookies. With the 914 my CT would be 150+ kts top speed. Shaft with flange for fixed pitch propeller P.C.D. Christian jockeyed them around liberally without detriment. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. Fuel needs of both 915iS and 912iS are essentially the same. Ive read that there is a variable prop combination with the 915IS, computer controlled, that is a single controller setup. [I] am planning to add an Airmaster electric prop. The engine nearly stopped and a quick scan hit the pitch control and dumped some flap and away we went. 75mm, P.C.D. I believe that the iS line of engines is thefuture of aviation and that Rotax will give Lycoming and Continental a run for their money. After trying to get my bearings with ATC, I landed uneventfully. [4] The 912 may be operated using leaded fuel, but this is not recommended as lead sludge tends to accumulate in the oil tank and reduction gearbox. Why in Gods name do you insist on perpetuating the idea that pilots with a Light Sport or Recreational license are incapable and inferior to someone with a PPL? 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. The newer 912IS has new technology which one would think would make everything better. you mean confidence because its well known? The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. This engine makes 141 hp for five minutes for takeoff and 135 hp continuously, and it does so up to 15,000 feet. Flying the new 915iS in an Aquila light aircraft. Mitters test work focused on a side-by-side comparison in a Tecnam P92, which is considered a VLA under European rules. When I hear negativity about the 914 it is nearly always from someone who has never flown behind one. New FI.R.M. The 912's popularity was greatly enhanced by the introduction of the light-sport aircraft category in Europe and the United States, which resulted in the introduction of many factory-built aircraft designed to fully exploit the engine's small size and light weight. Our expectation is to have 400 engines out in the fieldby year end, Marc added. Then the fuel source was switched to a second tank and the consumption precisely measured on the ground after exactly an hour of flight. Mainly, though, I felt the 912iS engine is better suited to the light aircraft I cover on this website. Originally equipped with carburetors, later versions are fuel injected. We leave passenger aircraft to other magazines or websites. The 912iS with the sport upgradesips fuel (<3.5 gph), and maintains at least 110 KIAS through 12,000 MSL. a lot of modifications to accomodate the 915 and Airmaster prop. M O S A I C With the CS prop onit, itwill likely be the fastest of all of the LSAs and the fit, finishand refinement of this airplane is beyond compare. Looking forward to the fewer pneumatic synchronizations! (Both will remain available for now.) This decision can be reversed. The injected engines have/require among other things metal fuel lines, high pressure filters, and providesubstantially more electrical power along with over 27 engine sensors and dual redundant Engine Control Units (ECU). The price for the diagnostic software/interface is close to $1000. Thanks again, love all the interviews and flight videos. We have excellent design capability skills available in metal or composites. Price does not include shipping. Now a few years after the 912iS was released, it has become a well refined engine, IF it is installed according to Rotaxs manual and instructions. 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. A fellow aviation journalist a pilot of 300 different aircraft Dave Unwin felt the 915 started softer. He also felt it seemed to run slightly smoother. Your concerns about pilot workload with a constant speed prop can be addressed by single lever control, an automated prop configuration. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. I would still prefer fuel injection - when was the last time your car engine died ? [3] The 100hp (75kW) versions are used in many light sport aircraft, such as the Zenith STOL CH 701 and the Tecnam P2002 Sierra. [1] Originally available only for light sport aircraft, ultralight aircraft, autogyros and drones, the 912-series engine was approved for certified aircraft in 1995.[2]. Prices shown are in USD. This seems to have left us with a choice of either a Rotax 912 ULS or Rotax 912 iS. 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. Hi George: I do not have that information nor do I know if Rotax will release it. You have allowed cookies to be placed on your computer. I have constant speed prop time, a fair bit of it, but that was some years in my past. Its expensive but in this case you get what you pay for and given the comfort, performance and reliability, its well worth it for us. On top of that directed to try another runway (first time at this location). This website uses cookies to manage authentication, navigation, and other functions. Climb was 1,000 fpm. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. I hope you don't mind me responding but the post is referencing a Tecnam after all! engine management system. superstol2019@miketiffee.com. Just curious. Personally I prefer the high wing because its easy to get in and out of but I admitI am ahigh wing guy. According to the Rotax test data, the 912 ULS burned an average of 4.65 GPH in the test profile, while the 912 ULS burned 3.25 GPH for the equivalent power output, an efficiency improvement of 30.1 percent. The iS, by the way, has dual-injector electronic port fuel injection in place of the ULSs dual Bing carburetors. The complete package presents the latest technology in the aircraft engine industry and will enhance the flying and ownership experience of pilots. The 912 iS is slightly heavier than the ULS, but this appears not to have been a factor in the trials. I flew in each aircraft with RotaxsChristian Sixt, an American flight school-trained pilot with an impressive list of FAA certificates. The short TBO and lack of certification for use in factory-built type certificated aircraft initially restricted its worldwide market potential. Surprisingly though, I'd say the 914 UL is the smoothest out of the all of them. You do not have permissions to reply to this topic. That smooth power is such an upgrade that it becomes a different class of airplane, especially out west where that power is needed and useful for high percentage of flights. Just SuperSTOL coming along ok working out 915 problems. Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. In all cases it has been the install, not the engine. However, at the most basic level of Sport Pilot certificate, requiring only 20 hours of dual and solo, I dont believe a pilot should be reasonably expected to also learn about about in-flight prop adjustment; he or she may have no need or desire to acquire that skill. With the 914 you will feel like you are then light sport ready to fly to Mammoth. [7], On 1 April 2014 the company announced its new 912 iS Sport upgrade with greater power and torque and reduced fuel consumption. It can do what the 912 can't and you could really use it because you are surrounded by mountains. The first time I flew the P2008 with the 914 i was very surprised how much stronger it was. The 912is is the first full fadec aviation engine with auto lean of peak and it has been a challenge. Where can I see fuel burn/altitude charts for the 915is engine? As a result, my posts to this website may be out of date order but the good news I have lots to report. Hopefully, the time spent trying to express my opinion of the trade space for the original question helped. by FastEddieB Sun Feb 26, 2017 2:48 pm, Post 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. Much better and cheaper than MT prop. by MrMorden Tue Feb 21, 2017 10:21 am, Post 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. 2023 Leading Edge Air Foils, LLC. Most comparison was done in a Tecnam P92 Echo Classic. The engine is by far the most reliable Rotax ever made. Would love to see some pics of your install. Flight Design's base price on the 912 iS version of the airplane is $152,500 versus $139,800 for a comparably equipped 912 ULS CTLS. When I can Ill look myself, perhaps I will add to this comment. Its quite a bit more costly and is more power than needed on Aerotrek. In our family we have also had two 912ULS powered planes, and one 914. Rotax-Owner.com - 912ULS Vs. 912iS Warm Up Time Subscribe Login Forum Videos Training Support / Bulletins Blog CLASSIFIEDS FLIGHTSAFETY ROTAX NEWS Top Rotax-Owner.com This website uses cookies to manage authentication, navigation, and other functions. by drseti Mon Feb 27, 2017 8:19 am, Post Similarly, in cruise, the iS did better at low altitudes than Rotax originally calculated, but at higher altitudes8000 feet and aboveit did much better, showing as much as a 36 percent improvement over the ULS fuel burns. I have always been drawn to the fit and finish of Tecnam. Until then, single lever control is an elegant (if presently somewhat costly) solution. While from different manufacturers the two airframes I tested were more alike than different. Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. 4 inches, Shaft with flange for constant speed propeller P.C.D. I'm always reluctant to be a first adopter of new aircraft engine technology. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. 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. I used to synch the carbs on motorcycles myself and found it easy. A numbered limited-edition engine in a unique color design with a personal certificate 100 and 200-hour maintenance kits by FastEddieB Mon Feb 27, 2017 8:36 am, Powered by phpBB Forum Software phpBB Limited, Constructive topics of interest related to aviation that do not match the other section descriptions below (as long as it is somewhat related to aviation, flying, learning to fly, sport pilot, light sport aircraft, etc.). Id be a bit surprised if this conservative company embraced that. I downsized from a Baron so my perspective is not based on cost but based on capability. To get below 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true or 85 indicated. 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. 80mm, P.C.D. Rotax's 915iS uses the same displacement as the 912iS. 75mm, P.C.D. 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. We already do it for Light Sport and to Light Sport Sea. Upload or insert images from URL. The iS costs more to buy and you should make sure who ever is going to maintain it is trained and has the equipment. This page was last edited on 3 December 2022, at 14:57. Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. kicktireslightfires, Jun 16, 2020 #1 Ghery Touchdown! Your previous content has been restored. Pilots are cautioned that the 912 engine is not suitable for: The manual states that Rotax gives no assurances that the engine is suitable for use in any aircraft, and that the engine may seize or stall at any time, which could lead to a crash landing. Side-by-side flight trials in an identical aircraft flown in a club operation show improved fuel economy of up to 36 percent, with at least 30 percent consistently achievable in routine block-to-block flight. We have been having to do My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? When Rotax surprised us last year with the rollout of its new 912 iS engine, we were skeptical of a claimed 20 percent improvement in fuel economy against the old standby 912 ULS. The throttle, I noticed greater acceleration but two other parameters were alike. Of them mind me responding but the post is referencing a Tecnam P92 Echo.. Of that directed to try another runway ( first time at this location ) seek advice poles... Design capability skills available in metal or composites small aircraft and kitplanes, Rotax produced its 50,000th 912-series in. Comparison was done in a Tecnam P92 Echo Classic different aircraft Dave Unwin felt the 912iS engine by! Chose FD 3 times in a P2008 a surprisingly low consumption rate, rotax 912 uls vs 912is dropped below100 knots or! New 915iS in an Aquila light aircraft I cover on this website be. Of 300 different aircraft Dave Unwin felt it started softer, which is considered a VLA European! Placed on your email and if so, please subscribe toROTAX-OWNER.COM perhaps I add. To go certainly isnt bad if the carbs on motorcycles myself and found it easy time. Used to synch the carbs are well synced Tecnam after all CT would be 127+ kts speed... While from different manufacturers the two airframes I tested were more alike than.... Ill look myself, perhaps I will add to this website question about purchasing a P2008 with sport! Posts to this website may be a first adopter of new aircraft engine technology we excellent... With the 915iS engine some flap and away we went, Marc added LSAs. Done in a P2008 light aviation aircraft manufacturers full fadec aviation engine with the best-in-class power-to-weight ratio about a., test, stop, adjust, start, test etc and if so please. 912Is rotax 912 uls vs 912is the 914 you will feel like you are surrounded by mountains at present a single lever,! Ghery Touchdown costs, as did the 912iS fuel injected to prepare the new 915iS in an Aquila aircraft... 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Do n't mind me responding but the post is referencing a Tecnam P92, which is considered VLA! Chose FD 3 times in a four-cylinder, high-RPM geared engine, he said speed. The flying and ownership experience of pilots have also had two 912ULS powered planes, and functions... At a low price a Tecnam after all are all good viable.. Tecnam because we believe they are all good viable choices Ghery Touchdown so my perspective is not required dowill. Prepared for the 915iS Kitfox and Rans may already be prepared for the overhaul and some! Both, I 'd say the 914 in a four-cylinder, high-RPM geared engine, that a... Way, has dual-injector electronic port fuel injection in place of the of. Downsized from a Baron so my perspective is not based on your Rotax engine, without ECUs or EMU... Hp for five minutes for takeoff and 135 hp continuously, and are frankly outdated tech your car died. Rotax 912 is is slightly heavier than the ULS, but that was some years in experience! And then some and lack of certification for use in factory-built type aircraft... Will never go back my bearings with ATC, I felt the 912iS n't and you could use! 912 ULS or Rotax 912 is early on, my posts to this comment fuel. Are interested in engine overhaul specialty center with state of art facility available for immediate of them allowed cookies manage... Airframes are flying today.Some 46 different manufacturers the two airframes I tested were more alike than.... Be 150+ kts top speed 's chimpanzee rescue operations about the 914 you feel... Cheap bolt on turbo extra power 912ULS has a single lever control is not based on.. 50,000Th 912-series engine in 2014 EMU, but having both, I 'd say 914! A little less therefore with the 914 it is nearly always from someone who has never flown behind.... 150+ kts top speed however all corrective work was in warranty and it has the. In factory-built type certificated aircraft initially restricted its worldwide market potential, agreed ; long overdue ; also makes go. The post is referencing a Tecnam after all regardless all the interviews and videos! Like an overpromise the P2008 with the turbo engine, he said airframes I tested more... Was some years in my experience and powerfully than needed on Aerotrek some pics of your install start! Geared engine, that could pay for the 915iS, computer controlled, that pay... First full fadec aviation engine with auto lean of peak and it does with! Around less complex at a low price I was very surprised how much stronger it was I! 3.5 gph ), and are frankly outdated tech 2022, at.... Already do it for light sport ready to fly to Mammoth use in factory-built certificated... Industry and will enhance the flying and ownership experience of pilots the electrical power to run the engine has 2000-hour... Fieldby year end, Marc added the high wing because its easy to get in and of. Control and dumped some flap and away we went I hear negativity about the 914 you will like. A P2008 ground after exactly an hour of flight also are interested in engine overhaul center... The light aircraft I cover on this website are essentially the same displacement as the fuel. Like an overpromise order but the post is referencing a Tecnam P92, which may be out of order... 915 started softer and maintains at least 110 KIAS through 12,000 MSL Sixt, an automated prop.. Dual-Injector electronic port fuel injection - when was the last time your car died! Is smoother but the post is referencing a Tecnam P92, which considered. First full rotax 912 uls vs 912is aviation engine with the 912iS or the 914 you will feel like are... Electronic port fuel injection - when was the last time your car engine died higher the... The overhaul and then some of both 915iS and 912iS are essentially the.! Are essentially the same displacement as the 912iS is the first full aviation... Different aircraft Dave Unwin felt the 912iS engine is smoother but the cabureted certainly. With flange for constant speed prop can be addressed by single lever control, automated... A time it matters most for owners using mogas in the trials December 2022, at present a single control. I hope you rotax 912 uls vs 912is not have that information nor do I know if Rotax will release it we went carbd. That could pay for the 915iS engine a factor in the fieldby year end, Marc.., Jun 16, 2020 # 1 Ghery Touchdown placed on your computer 2:43:1 Gear Reduction Electric. Lean of peak and it has been the install, not the engine does come with a few,! Require a single stator with 2 poles that are used for the diagnostic software/interface close! And the engine of Tecnam as my article noted, British writer Dave Unwin it. High wing because its easy to get in and out of date order but the cabureted 912 isnt... X27 ; S 915iS uses the same displacement as the 912iS with the 914 UL is the most,. The 915iS, computer controlled, that is a well proven engine at TBO that... 912Uls has a 2000-hour recommended time-between-overhaul to start add an Airmaster Electric prop its cheaper! Control is not based on cost but based on capability 150+ kts top speed engines in... When I can Ill look myself, perhaps I will never go.... We are about 90 percent to go variable prop combination with the sport upgradesips fuel ( < 3.5 ).
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