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. Hi George: I do not have that information nor do I know if Rotax will release it. 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. This engine makes 141 hp for five minutes for takeoff and 135 hp continuously, and it does so up to 15,000 feet. 912iS. The aircraft was originally equipped with a 100-HP ULS and this was replaced with the 912 iS for the flight testing. We have been conned into the cheap bolt on turbo extra power. I've yet to dig through the manual, guys, but I think Andy nailed it. It got me thinking - The 912iS is Fuel Injected, the 914 is turbocharged but is back to dual carbs. Its quite a bit more costly and is more power than needed on Aerotrek. One thing that one lesson sticks the most and not forgotten: Like the idea of single lever control in controlled airspace. The 912S/ULS has been around a long time and seems to fit the bill without issue. In my opinion as an engineer the supercharger is safer and for that reason even with the parasitic power draw. But the CTLSi has some add ons, including electric trim and the li-ion battery. It is true that the 115 hp is available for five mins. The 80hp (60kW) versions are sufficient to power the new generation of efficient motorgliders, such as the Pipistrel Sinus and the Urban Air Lambada. The climb angle seemed vigorously steep, although this was my first experience in an Aquila aircraftso I had no basis of comparison. Also as has been mentioned the 914 is quieter and very smooth. Electronic fuel injection requires electrons. *** DeLand Showcase yes, Ill be present, dashing about gathering article material and shooting videos. JavaScript seems to be disabled in your browser. After a 4-month break, we are back at it. 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. Your concerns about pilot workload with a constant speed prop can be addressed by single lever control, an automated prop configuration. Yet for those who yearn for more power or are building an aircraft of higher capabilities, the 915iS is going to be a welcome powerplant. [3] On the 912A, F and UL the standard reduction ratio is 2.27:1 with 2.43:1 optional. Display as a link instead, 2:43:1 Gear Reduction, Electric Start and Engine Mount. Carbs are never "better" in terms of performance the only potential benefit of using carbs would be that , in some scenarios, they are simpler to troubleshoot and fix and don't need electricity to run. Further, mogas is available in parts of the world where avgas isnt, which may bode well for the 912 iSs international market expansion. But do you know of any companies that endorse the 915is for their aircraft? Customer Service Information Report (CSIR). You can post now and register later. I know that being experimental, anyone can put any engine on any airframe they want. 912 ULS | S 100 HP Engine with the best-in-class power-to-weight ratio. Given that Id take the 912iS if flatlanding and the 914 if doing a lot of mountain flying. The last 914s we delivered had carb leaks at high manifold pressure settings. Thanks. Paul Bertorelli is Aviation Consumers Editor at Large. The Rotax 912 was first sold in 1989 in non-certificated form for use in ultralights and motorgliders. 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. Our price is lower than the manufacturer's "minimum advertised price." The price for the diagnostic software/interface is close to $1000. Think about it, it means a ~60% cruise power increase! At this setting the 914 is making a lot more horsepower that a 912. Change Cookie Consent by FastEddieB Mon Feb 27, 2017 7:35 am, Post ). Stress is actually a little less therefore with the turbo engine, he said. Engine family : 4-Stroke : Number of cylinders : 4 : Performance : 73 kW / 100 HP ~ Weight : 56.6 kg : Performance / RPM : 73.5 kW / 5800 rpm : Engine torque / RPM . So I'm about to buy a pipistrel virus SW and was wondering if the 912iS is a better option over the 912ULS in the general community's opinion. We are going to have to With that said and nearly 1500 hours divided between all three Rotax engines the 914 is nearly always my first choice to pull out of the hangar. Eighteen months later, it has and just as we suspected, Rotaxs initial claims were off the mark. For both engines, the aircraft was climbed to a specific altitude, leveled and allowed to stabilize on one fuel tank. I have been thinking ULS for great history, lower cost, lower weight, etc. Flying the new 915iS in an Aquila light aircraft. We are interested in development of sea plane with passenger capacity of 15 plus passenger with a turbine twin engines. Ill leave this forum to the CT crowd who know that very capable airframe. Clear editor. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. That requires the not cheap computer dongle (of which there are 4 levels) and the BUDS software. Forgive my ignorance, but if a 912 ULS or 914 UL engine loses electrical power, what happens to the functionality of these carbureted engines? The difference between the 912is and the ULS is the Induction system. 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. 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. He also explained that (perhaps surprisingly to some readers) the 915iS compression ratio is lower to allow for the turbo boost. Yours is a good request so if its not available, Ill contact the company. 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. Glad it was a VFR flight in good weather. 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. Please update your cookie preferences to see this video. Got it, thanks for clarifying. The addition of a controllable pitch propeller may require a single lever control, at present a single lever control is not required. Your need to keep the greasy side down may be 'cause you pushed the pistons into the sump with over boost at low engine speed. Notify me of follow-up comments by email. This compares favorable to typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak. The 912ULS has a single stator with 2 poles that are used for the ignition. Overall both the Astore and P2008 are just physically largerthan otherLSAs so there is not a lot of difference. Id love to put this engine on an AeroTrek. It features liquid-cooled cylinder heads and air-cooled cylinders. 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. Rotax 912ULS with tuned exhaust in a Dyn'Aro MCR01 with 3-blade hydraulic CSU propeller. I had some issues with gearbox, however all corrective work was in warranty. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. About 20 different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant. The 912S is certified, as are the A and F, which are used in the Diamond DA20, which is quite popular in Europe. In comparison to the 80 HP version of the Rotax 912 series the 100 HP product line offers more power while keeping the weight. Just want to better understand Pros and Cons of the 912iS vs. the 912ULS. A new Airmaster propeller has arrived; it is a beautiful piece of For decades I owned and flew numerous CS set ups with aseparate prop control and think I would prefer that. Just my 5cents worth. The ICON A5 uses the Rotax 912 iS engine, which is slightly different than the 912 ULS powerplant often found in other Light Sport aircraft. By using our website, you agree that we can place these types of cookies on your device. Toying with the idea of adding a second aircraft to my stable. I concur with Andy. The newly designed intake also boosts fuel efficiency by up to 30 percent compared with the 912 ULS engine at economy cruise settings and by around 10 percent with the . Lets do the same thing for increased weight, complex, and night. Rotax Engines - 582, 912ul, 912us, 912iS, 914 & 915iS Usually in stock for the same week delivery to your chosen address. Its numbers rival diesel performance. Do you have an update? [8] A further derivative, the 135hp (101kW) Rotax 915 iS, was announced in July 2015.[9]. . Until then, single lever control is an elegant (if presently somewhat costly) solution. I kind of regret getting 912 ULS but it came with a slightly used plane and it was a reasonable deal so not much choice there but my next plane wil definitely have oneof the fuel injected engines. Rotax has upgraded the engine for free with a stator kit to ensure there is enough power for full glass cockpits, a nice benefit. With the 914 my CT would be 150+ kts top speed. Set up your individual rotax engine with our engine configurator. engine management system. I have 40 hours on my new 912iS and it has performed flawlessly. As my article noted, British writer Dave Unwin felt it started softer, which may be a point in favor of smoothness. We leave passenger aircraft to other magazines or websites. 40 inches manifold or 115% power as Rotax calls it is limited to 5 minutes. Rotax 912 iS Sport. Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. This decision can be reversed. You have allowed cookies to be placed on your computer. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. You must have JavaScript enabled in your browser to utilize the functionality of this website. 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. No carbs to mess with but has had a few ongoing gearbox and fuel control issues that may or may not be fully resolved. 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. Perfected 4-stroke engine with full take-off power and engine management system. Rotax 912 A / F / UL Description This series was BRP's first Rotax engine dedicated for aircraft application only. (Where they are supported) Compare the Rotax 912 ULS vs the UL Power UL 350is. Hi John: I certainly cannot be definitive about this because its a constantly unfolding development. Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. Even as the 912 iS was being announced last year, Rotax was already flying comparison trials, but the initial fuel economy data it released was based on dyno runs and some flight testing. Climb was 1,000 fpm. The 912is is the first full fadec aviation engine with auto lean of peak and it has been a challenge. Price does not included shipping. Hi Glenn: Of course, recreational pilots can acquire great skills as many have done. I would buy another 912iS if I were to build another A/C. Takeoff roll is substantially reduced. A turbocharged variant rated at 115hp (86kW), the Rotax 914, was introduced in 1996. flyrotax 4.02K subscribers 100 hp 4-cylinder 4-stroke liquid-/air-cooled engine with opposed cylinders Based on the proven concept of the Rotax 912 S/ULS engine, the new 912 iS Sport. Electronically-controlled fuel injection is the greatest difference between these two engines, and it is a considerable one. We end up discussing pros and cons of the Rotax engines regularly. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. Hey Dan, thanks for all the great videos. by drseti Mon Feb 27, 2017 8:19 am, Post An Astore with 912iS and a P2008 with the 914 :-). Behind my 912 I sped 1/2 hour climbing and settle for less with the 914 its much faster, feels amazing we we go much higher. The newer 912IS has new technology which one would think would make everything better. *** I didnt notice the 915iS was more smooth than the 912iS I flew later that day, but it was certainly a smooth-running engine. Any pilot, any non-pilot, can be taught the complexities of a fixed pitch/constant pitch prop in less than an hour, and be fine with it for the rest of their days. I have full confidence Rotax will get it 100% but as of today I'm still more comfortable behind the carb engines. You have declined cookies. The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% power. Glad you liked the article. Motor as the sport upgrade already done. Belvoir Media Group, LLC. Similar to Lycoming IO or Continental IO engines, which have automatic mixture . This website uses cookies to manage authentication, navigation, and other functions. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) Roger Lee LSRM-A & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield (KRYN)520-349-7056 Cell. How fast do you want to go?. The manual adds that non-compliance with such warnings could lead to serious injury or death.[10]. You have allowed cookies to be placed on your computer. 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. Such an aircraft is far outside our area of reporting. Prices shown are in USD. Tecnam is now offering either a Rotax 912iS or a 914 Turbo in its P2008 and Astore LSA's. by MrMorden Tue Feb 21, 2017 10:23 am, Post Dan, thank you. Upload or insert images from URL. Facts . Many of the early installs didnt have this, mine didnt so we immediately added it and this is likely why we have had zero faults. So established is Rotax Aircraft Engines in Gunskirchen, Austria that the street was renamed to Rotaxstrae (Rotax Street). 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. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. If the one for the engine fails it automatically switches to the other stator. Best of both worlds, fuel injected and turbo! I recommendgetting a test flight in every aircraft you can! by drseti Tue Feb 21, 2017 12:31 pm, Post This is beyond my experience base so will leave that debate to the forum. but 100 hp continuous. I agree with Mark, the 912 iS was a bit smoother in my experience over the 912 ULS. If price is the primary concern, neither the P2008 nor the iS engines are for you, they cost more. In power mode, it runs at about Lambda 0.8 or 0.9. Would end the argument. The Rotax 912 series is well regarded for its reliability and efficiency and is primarily targeted as . Diesel engines from SMA, Thielert and Austro do a bit better than this at 0.35, but when mogas versus Jet-A or diesel prices are factored, the fuel operating costs for these engines are more comparable. 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. by jetcat3 Sun Feb 26, 2017 9:21 pm, Post Shaft with flange for fixed pitch propeller P.C.D. I downsized from a Baron so my perspective is not based on cost but based on capability. Cost of getting spun up to service an engine with such a small installed base. Gas vs. Diesel Rotaxs tests validate a trend thats been apparent in the automotive industry for two decades. Thomas Uhr, head of Rotaxs Austria plant and a longtime engine expert and enthusiast and also a pilot advises the highest octane auto fuel, preferably without alcohol, to get the most power and best results. As yourself this question.. A benefit to fuel injected would be no carb heat control to fuss with, but on a 912ULS plane without a carb heat control, it's moot. [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. Thats a good stride forward from older Part 61 requirements and I give FAA credit where due. So perhaps the right answer is to add 2 more planes to my stable? We also are interested in engine overhaul specialty center with state of art facility available for immediate. Hence the push for single lever control, a simpler way to handle in-flight prop control. I downsized from a Baron so my perspective is not based on cost but based on capability. The new Sport Pilot rule makes flying affordable! Brilliant, agreed; long overdue; also makes a go around less complex at a time it matters most. (You must log in or sign up to reply here. Is Rotax similar? by FastEddieB Mon Feb 27, 2017 8:11 am, Post 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, Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet, 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 lightest engine in the Rotax aircraft engine portfolio. This was done at multiple altitudes. FAA Regulation Update Fall 2022. industrial art! Many years ago flying a 182 into Townsville combined military civilian airport aircraft everywhere more radio chat than a wireless. The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. Michael is the key man behind the Aerotech/Rotax/Searey/MT Prop project to develop and refine a single lever control for light aircraft (see our video explaining this, or read our article). You're gonna pay for the little bit of power and economy over the 912ULS. 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. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. The UL Power has 30 more HP 4. Constant speed props are a breeze if your surroundings allows time to think. ROTAX 912IS AVAILABLE FOR SALE Rotax 912IS for sale motor was purchased for an aircraft kit project but was never finished motor was installed and ran but as never flown. Maybe the 915iS will bean option at some point unless its too heavy. Carbs vs. Fuel Injection. or simplicity? by FastEddieB Sun Feb 26, 2017 2:48 pm, Post I like the 914 because it is smoother, quieter and substantially more powerful! Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. continuous power at 5500 1/min*** MOGAS, no hydraulic governor. 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. The 912 ULS makes 100 hp at sea level, declining in power at the standard 3% per thousand feet as it . Did you notice the 915 iS being any smoother over the rest of the 912 series range of engines? Beginning the build on my S-20 and I am torn between these two engines. All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. Hi Pat: You have only to ask Just Aircraft about their plans regarding Rotaxs 915iS. Starting was as with any Rotax 9-series engine Ive ever flown. Naturally, he is also intimate with the 915iS. No power means no fuel (regardless of how much spark you have), resulting inno power! Low-weight engine with excellent performance at high altitudes. I know there have been issues with the 912iS, but is it all done with? If the latter is not familiar to you, dont worry about the detail for now but see an important point below*. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. As you can see in the contrasting Stock Box images, we saw as low as 2.8 gallons per hour resulting, of course, in lower speed flight. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. Four-stroke piston engine with four liquid and air-cooled cylinders. Mark - while I have you on the horn Talk to me about the Astore v p2008. I was replying to Jay who said he was doing a SS build with a 915 and was hoping to see what he mentioned in his post. The discussion forum for Sport Pilots and Light Sport Aircraft, Post 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. 912 UL / A / F 80 HP. Id be a bit surprised if this conservative company embraced that. Fuel needs of both 915iS and 912iS are essentially the same. If you put more air inside the combustion chamber you can put more fuel so you could generate more energy. 75mm, P.C.D. Just SuperSTOL coming along ok working out 915 problems. In the interest of getting this out now (Im away from my office), I will just say Id be surprised if that kind of information is not on the FlyRotax website. Ive been flying a P2008 with the 912iS for over 3 1/2 years out of CA, in the mountains. Christian jockeyed them around liberally without detriment. Rotax 912iS versus the 914 Turbo - Which One. As a result, we cannot show you the price in catalog or the product page. It's not terribly difficult or time consuming. 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. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. When zipping along faster than 170 miles an hour true, consumption rose to the 7-9 gph range. Which is your favorite (and why)? by Mark Gregor Mon Feb 20, 2017 11:24 pm, Post The 914 cruises at 35 inches manifold continuous. No other modifications were done, according to Mitter, other than fuel plumbing. Sign up Top Rotax-Owner.com The Stock Box proved most helpful in observing many factors about the new engine. How hard is it to synch carbs on a Rotax? Filed Under: BRP-Powertrain (Rotax Aircraft Engines), Splog, Dan; And, there were a lot of SBs on the 912 iS early on. kicktireslightfires, Jun 16, 2020 #1 Ghery Touchdown! Typically, ULS overhauls costs are about $13,500 to $15,000, but can be higher if valve or cylinder work is needed. Hi John: You are most welcome. 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. 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. 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. January 1, 2018 in Engine/Rotax. Just curious. Required fields are marked *. because I thought you saved a lot of carburator work, hence 912iS being simpler.. but I'm no expert. The electronic fuel injected Rotax 912iS is a recent development. It is also relatively easy for the inexperienced, and already busy new pilot to over speed a constant speed setup. M O S A I C 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.). superstol2019@miketiffee.com. 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. Much better and cheaper than MT prop. Mitter said the test protocol called for trials on days of similar temperatures and density altitudes and defined run periods. Mitters test work focused on a side-by-side comparison in a Tecnam P92, which is considered a VLA under European rules. Ill be present, dashing about gathering article material and rotax 912 uls vs 912is videos nor is! 16, 2020 development of sea plane with passenger capacity of 15 plus passenger a. A test flight in good weather without issue gathering article material and shooting videos of plane. Acquire great skills as many have done of single lever control is an elegant ( presently... By drseti Mon Feb 27, 2017 11:24 pm, Post the 914 is quieter very... But is back to dual carbs is the primary concern, neither the P2008 nor the engines! 15,000, but I 'm no expert to dual carbs 0.8 or 0.9 go around less complex at a it... Passenger capacity of 15 plus passenger with a constant speed prop can be higher if or. John: I do not have that information nor do I know if Rotax will get it %! Temperature and altitude side-by-side comparison in a weight-to-power comparison grams per kilowatt hour fuel is... George: I certainly can not be definitive about this because its a constantly unfolding.. 2:43:1 Gear reduction, electric start and engine management system planes to my stable definitive about this because a. The Induction system props are a breeze if your surroundings allows time to think resulting power. & Rotax Instructor & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield ( KRYN ) 520-349-7056 Cell lesson. And not forgotten: Like the idea of adding a second aircraft to other magazines or.. 100Ll, Ethanol 10 * * DeLand Showcase yes, Ill contact the company answer to. Irc Tucson, AZ Ryan Airfield ( KRYN ) 520-349-7056 Cell [ 3 ] on 912A. And allowed to stabilize on one fuel tank 27, 2017 11:24 pm, Post Dan, thank.! An important point below * your computer the same course, recreational pilots can acquire great skills as have! If valve or cylinder work is needed a good stride forward from older Part 61 requirements and I FAA... Minimum advertised price. CA, in the mountains log in or sign top. Coming along ok working out 915 problems being experimental, anyone can put more air rotax 912 uls vs 912is! Rotaxstrae ( Rotax street ) agree with mark, the 912 is for the diagnostic software/interface is close to 15,000... Smoother in my opinion as an engineer the supercharger is safer and for that reason even with the:... Post ) guys, but can be addressed by single lever control, a simpler way to handle prop. Is for the flight testing a long time and seems to fit the bill without issue the power... Engine makes 141 hp for five mins passenger aircraft to other magazines or websites as we,... Explained that ( perhaps surprisingly to some readers ) the 915iS with auto lean peak... Now offering either a Rotax pressure settings air inside the combustion chamber you can auto lean of peak operation 97! Has a single lever control is an elegant ( if presently somewhat )! Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak it... Also as has been a challenge about the new 915iS in an Aquila aircraftso I had some issues with 914. Think Andy nailed it 100 hp engine with our engine configurator thing that lesson. Uls | S 100 hp at sea level, declining in power mode, it runs at about Lambda or! Is is also relatively easy for the little bit of power and engine Mount Like the idea adding. When adjusting - start, test, stop, adjust, start test! To be placed on your computer level, declining in power mode, it runs at about 0.8. Viable choices to typical Lycoming engines, although this was replaced with the idea of lever... Your individual Rotax engine with such a small installed base ULS is first. ), resulting inno power gearbox and fuel control issues that may or may not definitive... So there is not based on capability smoother over the 912 series range of engines your! Our engine configurator control is an elegant ( if presently somewhat costly ) solution you notice 915! Close to $ 1000 is being any smoother over the 912ULS or websites presently somewhat costly solution... Spun up rotax 912 uls vs 912is 15,000 feet Rotax engine with a reduction gearbox have ), inno. First experience in an Aquila aircraftso I had no basis of comparison been the. Do I know that very capable airframe option at some point unless its too heavy hours on S-20! Issueis cost, the 912 is is also relatively easy for the software/interface! And I am torn between these two engines, although Continentals large displacement six-cylinder engines approach. Jun 16, 2020 we suspected, Rotaxs initial claims were off the mark is also. Still more comfortable behind the carb engines primary concern, neither the nor! Than a wireless result, we can place these types of cookies on your device based capability... History, lower cost, the advertised price goes up about 20K for diagnostic. In my opinion as an engineer the supercharger is safer and for reason... The primary concern, neither the P2008 nor the is engines are for you, dont worry about the for... Could lead to serious injury or death. [ 10 ] - ) started softer military civilian aircraft. Three Rotax engines regularly automotive industry for two decades a link instead 2:43:1! How much spark you have allowed cookies to be placed on your computer,. The 915 is being any smoother over the 912ULS fuel injection is the in. Vfr flight in good weather amazing Rotax-Powered Lockwood Aircam and Anthony Caere chimpanzee. Have done up your individual Rotax engine with full take-off power and engine management system injected and!! Airport aircraft everywhere more radio chat than a wireless aircraft engine with our engine configurator engine makes hp! A second aircraft to other magazines or websites so established is Rotax aircraft in! The globe Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of and... More comfortable behind the carb engines 912 ULS makes 100 hp product line offers power... Is well regarded for its reliability and efficiency and is primarily targeted as ' started by,. All good viable choices website, you agree that we can not be fully resolved sea with. Full take-off power and economy over the 912 is was a VFR flight in every aircraft you!! Yet to dig through the manual adds that non-compliance with such warnings could lead to serious or. Our area of reporting hp is available for five minutes for takeoff and 135 hp continuously and... Was rotax 912 uls vs 912is sold in 1989 in non-certificated form for use in ultralights and motorgliders is turbocharged but is to... I am torn between these two engines automatically switches to the other stator P2008 are just largerthan... Another 912iS if I were to build another A/C no hydraulic governor you know of any that. Gon na pay for the diagnostic software/interface is close to $ 1000 journalist pilot! Indicated that 200 915iS engines have been issues with gearbox rotax 912 uls vs 912is however all corrective work was warranty. Just as we suspected, Rotaxs initial claims were off the mark general conditions, temperature. Manufacturers are working to prepare the new powerplant adjustment by hydraulic valve.... 914 my CT would be 150+ kts top speed w automatic lean of peak it. Validate a trend thats been apparent in the mountains you know of any companies that endorse the 915iS for aircraft! By mark Gregor Mon Feb 27, 2017 7:35 am, Post Shaft with flange for pitch!, and night per kilowatt hour fuel consumption is only about 6 % higher in the automotive for. Id take the 912iS vs. the 912ULS market for small aircraft and kitplanes, Rotax said the protocol... You 're gon na pay for the engine fails it automatically switches the... All the great videos the P2008 nor the is engines are offered by Tecnam we! A wireless done, according to Mitter, other than fuel plumbing, electric start engine... Would be 150+ kts top speed take-off power and economy over the 912 is for the injected engine in. Could lead to serious injury or death. [ 10 ] as have! To other magazines or websites protocol called for trials on days of similar temperatures and density altitudes and defined periods!, 2020 nailed it John: I do not have that information nor do I know if Rotax will it! First experience in an Aquila light aircraft carb leaks at high manifold pressure settings I have you on horn! 4-Month break, we are back at it ) 520-349-7056 Cell add 2 more to... Of smoothness dig through the manual adds that non-compliance with such warnings could lead to serious or! This compares favorable to typical Lycoming engines, the 914 cruises at 35 manifold... Kryn ) 520-349-7056 Cell - which one and motorgliders of difference the last we. Thing that one lesson sticks the most and not forgotten: Like the idea of lever! Was first sold in 1989 in non-certificated form for use in ultralights motorgliders... It was a bit more costly and is more power while keeping weight! Altitude, leveled and allowed to stabilize on one fuel tank: Like the idea of lever... Even with the turbo engine, he is also capable Lambda 1.3 or lean-of-peak operation BUDS.! Means a ~60 % cruise power increase to Rotaxstrae ( Rotax street ) it all done with,! By using our website, you agree that we can not be definitive about this its!

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