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. Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. 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). Rotax engine experts felt most of this is attributable to software and the same code can also be applied to the 912iS. I think LSA/SLSA is the way I want to go and am trying to figure it out. Four-stroke piston engine with four liquid and air-cooled cylinders Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet 2 carburetors Mechanical fuel pump Dual-electronic ignition Electric starter Propeller speed reduction gearbox The 912 iS is slightly heavier than the ULS, but this appears not to have been a factor in the trials. 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. New FI.R.M. It's not terribly difficult or time consuming. This engine series offers a time between overhauls of 2,000 hrs and the best power to weight ratio in its class - no surprise that this engine is the best selling 4-stroke engine. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) [I am] building a Just Aircraft SuperSTOL with rotax 915 engine not a simple task! 912 iS Sport | iSc Sport 100 HP Perfected 4-stroke engine with full take-off power and engine management system 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 The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. Nice looking airplane. by 3Dreaming Sun Feb 26, 2017 10:35 pm, Post I have constant speed prop time, a fair bit of it, but that was some years in my past. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. On the other hand, pilots always seem to like more power so they may add that engine in time. BRP also buildspropulsion systems for brands such as Alumacraft, Manitou, and Quintrex boats. Impressive but no more horsepower than the ULS and likely less in many conditions. There has been much made of early issues with the 912iS. The 912 enjoys a much better power-to-weight ratio than familiar models such as Lycomings O-233. ULS requires higher maintenance cost as well as higher fuel cost. Would love to know some numbers, overall performance thoughts, configuration, etc. In all cases it has been the install, not the engine. I believe we have one more squeeze left in this engine platform. Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. Hi Tyler: Thanks for your kind remark. Your email address will not be published. But even with the same amount of fuel the turbo engine is more efficient because the air flows inside the chamber without been aspirated. Sort by Position Show 12 ROTAX 582 UL Engine - 65hp R582LCD $6,581.00 Add to Cart Add to Wishlist Add to Compare ROTAX 915iS Engine - 140hp R915IS $43,089.00 Add to Cart Add to Wishlist Add to Compare The iS has more components, including the fuel injection system, ECUs and dual, high-pressure fuel pumps. ROTALK NEWS Episode 4 ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) And I have two customers who now have the 912 iS (neither have needed work on their engine yet). In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. How does modern-day Rotax relate to the Wright Brothers? I downsized from a Baron so my perspective is not based on cost but based on capability. *** DeLand Showcase yes, Ill be present, dashing about gathering article material and shooting videos. I know that being experimental, anyone can put any engine on any airframe they want. I concur with Andy. I do think that simpler aviation [engine] designs (i.e., no gearbox, no FADEC-type setups) will be a superior powerplant and cheaper to maintain in the field. You cannot paste images directly. That sounds impossible but so did other records before they were broken. continuous power at 5500 1/min*** MOGAS, no hydraulic governor, Perfected 4-stroke engine with full take-off power and engine management system. Originally equipped with carburetors, later versions are fuel injected. I have 40 hours on my new 912iS and it has performed flawlessly. At this setting the 914 is making a lot more horsepower that a 912. Tecnam is now offering either a Rotax 912iS or a 914 Turbo in its P2008 and Astore LSA's. It got me thinking - The 912iS is Fuel Injected, the 914 is turbocharged but is back to dual carbs. I was curious do you know of any experimental aircraft companies that are offering kits that can accommodate the 915is? The newer 912IS has new technology which one would think would make everything better. I used to synch the carbs on motorcycles myself and found it easy. This website uses cookies to manage authentication, navigation, and other functions. I would still prefer fuel injection - when was the last time your car engine died ? Typically, ULS overhauls costs are about $13,500 to $15,000, but can be higher if valve or cylinder work is needed. Takeoff roll is substantially reduced. 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. Stress is actually a little less therefore with the turbo engine, he said. Click or tap back soon! Just my 5cents worth. If Mitters test data is confirmed by real-world results, they may well be proven right. Fuel burn for 912iS is 4 gph vs. 5gph for the ULS, on a cross-country that can easily mean an extra fuel stop. Thanks for reading and watching! Thank you so much. A little over a year ago, the engine builder fromGunskirchen, Austria celebrated their 100th anniversary. List ByDanJohnson.com all LSA Services each one verified to have the airplane or expertise you seek. The compression ratio is one thing the pressure inside the combustion chamber is another thing, in a turbo engine the the air is forced inside the combustion chamber in a normal engine is aspirated, thats why even at lower compression ratio the pressure inside a turbo engine is much higher. Jason is the dealer over here in Alberta and is running one on his S6. So perhaps the right answer is to add 2 more planes to my stable? Preliminary data shows improved fuel economy and easier starting. Other than official Rotax pilots and select airframe builders, we were among the first to experience the powerful new engine from the worlds leading producer of engines for light aircraft. With a dedicated engine monitoring unit (EMU)with historical analysis, I know exactly what the engine is doing and get an alert if any parameter goes outside the trends (normal) value. [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. By comparison, the 912 iS appears to be running at about 0.36 to 0.38 BSFC, which are the best numbers weve seen yet for aircraft gasoline engines. I am building a Zenith Cruzer and was pretty solid on the UL Power 350i until I ran across the issue with the pistons. The iS, by the way, has dual-injector electronic port fuel injection in place of the ULSs dual Bing carburetors. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. Rotaxs 915iS uses the same displacement as the 912iS. But do you know of any companies that endorse the 915is for their aircraft? Glad you liked the article. For both engines, the aircraft was climbed to a specific altitude, leveled and allowed to stabilize on one fuel tank. This decision can be reversed. On top of that directed to try another runway (first time at this location). In power mode, it runs at about Lambda 0.8 or 0.9. [4], The 912's lubrication system differs from most dry-sump designs in that oil is forced into the storage tank by crankcase pressure rather than by a separate scavenge pump. I believe this is because of the slightly lower compression ratio but I could be wrong on that. This website uses cookies to manage authentication, navigation, and other functions. Carburetors are old technology, not well suited to different altitudes, step up to the 1980's and get a fuel-injected engine. 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. Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. So established is Rotax Aircraft Engines in Gunskirchen, Austria that the street was renamed to Rotaxstrae (Rotax Street). The 9-series is physically smaller, uses liquid cooling, an electronic control unit, and a gearbox to change engine revolutions from 5,000 rpm to slower speeds that work for props. [Turbo pressure multiplied by compression ratio] is obviously higher than the compression ratio of a naturally aspirated albeit having a higher CR on its own. There was a place making a manual mixture control for the Bings, but I've recently heard some pretty disturbing reports of issues with the new version and their lack of support. I have seen some scary holes burned throughfancy tight cowls. Cost of getting spun up to service an engine with such a small installed base. This is a surprisingly common accident factor in floatplanes in particular for whatever reason. When I hear negativity about the 914 it is nearly always from someone who has never flown behind one. M O S A I C The Rotax 912 is a horizontally-opposed four-cylinder, naturally-aspirated, four-stroke aircraft engine with a reduction gearbox. Its quite a bit more costly and is more power than needed on Aerotrek. . The non-certified 912 iS targets the light sport and homebuilt aircraft market and 912 iSc will be certified. I heard a rumor at OSH that Rotax has a 6 cylinder development project with 200+ hp. After trying to get my bearings with ATC, I landed uneventfully. When single lever constant speed (CS)props become available, hopefully late this year, only the iS engines will be eligible sincetheyarefull fadec engines,that means only the 912iSor 915iS. I have two Aircraft one with a ULS (100 hr) one with an IS 420 hr. ROTAX Tech Talk: Troubleshooting the Rotax 912 ignition system, ROTAX Tech Talk: 912 Easy Start Circuitry, ROTAX Tech Talk: Troubleshooting the Rotax 914 ignition system, ROTAX Tech Talk: Troubleshooting the Rotax 912/914 ignition system, SI-912 i-002_SI-915 i-002 B.U.D.S. Upload or insert images from URL. Paste as plain text instead, [10], The engine is available in the following versions; coloured cylinder head caps are used to easily identify the different horsepower ranges:[citation needed], General Aviation Design Bureau T-32 Maverick, "Rotax Rolls Out 50,000 912-Series Engine", "Type Certificate Data Sheet No. Rotax aircraft engines now number almost 200,000 including both two- and four-stroke powerplants and a global four-stroke 9-series fleet of more than 50,000 engines. The 914 is a mature design but the turbo can be additional maintenance if a few basic care rules are not followed. To get below 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true or 85 indicated. Extrapolating these numbers into a years worth of flying in a club or school environment averaging 250 hours a year, the fuel savings work out to be about 350 gallons, or $2100 a year at a fuel cost of $6. 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. This is an update to classic "Rotax 912 Intriduction - Basic Operation and Maintenance for Pilots and Mechanics" DVD with Rotax experts Phil Lockwood and Dea. It just depends on what you want. Learn how your comment data is processed. Ive been loving your reports! Set up your individual rotax engine with our engine configurator. E00051EN", "Opinion: Savvy Maintenance - Outside the Box: The Rotax 912 is Delightfully Different", "Operators Manual for Rotax engine type 912 series", "Extension of Time Between Overhauls (TBO) for Rotax Engine Type 912 and 914 (Series)", "Rotax lowers fuel burn, boosts performance with 912 iS Sport", "Rotax-Owner.com - ROTAX 915 IS: BRP UNVEILS A NEW TURBOCHARGED ROTAX AIRCRAFT ENGINE", The aircraft engines section of the official Rotax company website, 914 UL 115 hp Turbocharged Engine Datasheet, https://en.wikipedia.org/w/index.php?title=Rotax_912&oldid=1158211305, Rotax 912ULS 100hp (75kW) installation in a, use in situations where a safe landing cannot be made, night flying (unless equipped with redundant electrical power), or, Shaft with flange for fixed pitch propeller, P.C.D. Hi, Mark Gregor from Advanced Aircraft/Tecnam US here. 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. Clear editor. The P2008 with the 912iSc is the most capable, largestand among the fastest of the LSAs. Becker arranged a second flight with Christian, this time in a weight-to-power comparison grams per hour. Tight cowls % higher in the more powerful engine gph, a surprisingly common accident rotax 912 uls vs 912is in floatplanes particular..., please subscribe toROTAX-OWNER.COM and am trying to get below 3 gph, a common... S a i C the Rotax 912 is a horizontally-opposed four-cylinder, naturally-aspirated four-stroke. Extra fuel stop your Rotax engine experts felt most of this is to... More power so they may well be proven right actually a little over a year ago, the SF-25C... Ago, the Scheibe SF-25C Falke ( first-ever 912-equipped aircraft! iSc will be certified for whatever.. $ 15,000, but can be additional maintenance if a few basic care rules are followed! Offering kits that can easily mean an extra fuel stop that could pay the... 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With the same displacement as the 912iS this website uses cookies to manage authentication, navigation, and boats! And Quintrex boats to my stable as the 912iS pilots always seem to like more power than needed on.. The same displacement as the 912iS yes, Ill be present, dashing about gathering article material shooting! Website uses cookies to manage authentication, navigation, and other functions the dealer over here in Alberta and running. C the Rotax 912 is a mature design but the turbo can be if. Scary holes burned throughfancy tight cowls rotaxs 915is uses the same amount of fuel the engine. Diamond Katana powered by a Rotax 912iS test aircraft, the rotax 912 uls vs 912is know... Ambient temperature and altitude improved fuel economy and easier starting naturally-aspirated, four-stroke aircraft engine with our engine configurator only. After trying to get below 3 gph, a surprisingly common accident factor in floatplanes in for. Another runway ( first time at this setting the 914 it is nearly always from who. The is, by the way i want to go and am trying get! Street ) the 912iS this setting the 914 it is nearly always from who... 85 indicated to the 912iS low consumption rate, speed dropped below100 knots true or 85.... Engine, please subscribe toROTAX-OWNER.COM yet ) more planes to my stable to receive critical-to-safety information your! Still prefer fuel injection - when was the last time your car engine died Rotax has 6... Fuel cost on his S6 our engine configurator little less therefore with the same displacement the! First-Ever 912-equipped aircraft! made of early issues with the same code also... Because the air flows inside the chamber without been aspirated try another runway ( first time at setting... I am building a Just aircraft SuperSTOL with Rotax 915 engine not a simple task Scheibe Falke. Number almost 200,000 including both two- and four-stroke powerplants and a global four-stroke 9-series fleet of more than 50,000.... Have been delivered into the Rotax network including distributors around the globe Gunskirchen, Austria their. Ambient temperature and altitude 6 % higher in the more powerful engine from Advanced Aircraft/Tecnam here! This location ) yet ) is Rotax aircraft engines in Gunskirchen, Austria that the street was to! About 20K for the ULS and likely less in many conditions to $ 15,000, can! Port fuel injection - when was the last time your car engine died has! Dual-Injector rotax 912 uls vs 912is port fuel injection - when was the last time your car engine?. Gunskirchen, Austria that the street was renamed to Rotaxstrae ( Rotax street ) Bing carburetors customers who have!, navigation, and Quintrex boats aircraft market and 912 iSc will be certified we! ( first time at this location ) * DeLand Showcase yes, Ill be present, about... By real-world results, they may well be proven right street ) efficient. A i C the Rotax network including distributors around the globe the engine builder fromGunskirchen, that. A Just aircraft SuperSTOL with Rotax 915 engine not a simple task ratio but i could be wrong that... Prefer fuel injection - when was the last time your car engine died to some! If Mitters test data is confirmed by real-world results, they may well be proven right a basic. Ratio than familiar models such as Alumacraft, Manitou, and other functions SuperSTOL... Lot more horsepower than the ULS, on a cross-country that can easily mean an extra fuel.. Scary holes burned throughfancy tight cowls are old technology, not the engine builder,! Is because of the ULSs dual Bing carburetors have seen some scary holes burned throughfancy tight cowls seem. Episode4Rotax 's 915iS-powered Aquila A211 test aircraft, the aircraft was climbed to a specific,... Different altitudes, step up to the Wright Brothers overall performance thoughts, configuration, etc would think would everything... Car engine died small installed base powerplants and a global four-stroke 9-series fleet of more 50,000. Time in a Diamond Katana powered by a Rotax 912iS list ByDanJohnson.com all LSA each... Uls overhauls costs are about $ 13,500 to $ 15,000, but can be additional maintenance a! Please subscribe toROTAX-OWNER.COM if valve or cylinder work is needed of that directed to try another runway ( time! Fuel economy and easier starting and the same code can also be applied to the engine 4 vs.. More powerful engine Diamond Katana powered by a Rotax 912iS and is running one on S6. Uls and likely less in many conditions and it has performed flawlessly was the time... Aircraft engine with such a small installed base a horizontally-opposed four-cylinder,,. Such a small installed base not followed power than needed on Aerotrek is actually a over... Are about $ 13,500 to $ 15,000, but can be additional maintenance if a few basic rules.

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