The 912is is the first full fadec aviation engine with auto lean of peak and it has been a challenge. No carbs to mess with but has had a few ongoing gearbox and fuel control issues that may or may not be fully resolved. Hi Drew: Thanks for your kind words. Low-weight engine with excellent performance at high altitudes. So established is Rotax Aircraft Engines in Gunskirchen, Austria that the street was renamed to Rotaxstrae (Rotax Street). Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. 2 cents worth from an owner, Id say buy the 912iS or wait until the 915 is available, avoid the old tech dual carbd engines regardless of cost. Soon after advancing the throttle, I noticed greater acceleration but two other parameters were more obvious. You can have separate throttle and mixture controls. 75mm, P.C.D. (Tom, do you concur?). No power means no fuel (regardless of how much spark you have), resulting inno power! Belvoir Media Group, LLC. For that question Im a firm advocate of the injected engine. So perhaps the right answer is to add 2 more planes to my stable? 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 . 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. The iS is a nice improvement over the ULS but is high tech for sure. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. In my opinion, this is not a simple decision. Im sure other companies do as well but it would require some investigation to learn all of them. It is also relatively easy for the inexperienced, and already busy new pilot to over speed a constant speed setup. They tried to keep all other factors constant: The same airframe, similar speed, the same atmospheric conditions and temperature, the same fuel volume, and even the same pilot. One difference from prior experience was the Stock Box instrument (more formally, Stock Flight Systems Engine Monitoring Unit or EMU) developed by Michael Stock incollaboration with Rotax. I have two Aircraft one with a ULS (100 hr) one with an IS 420 hr. I think LSA/SLSA is the way I want to go and am trying to figure it out. by drseti Sun Feb 26, 2017 9:30 pm, Post There has been much made of early issues with the 912iS. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. However, syncing them won't fix the fact that they tend to run rich as hell no matter what you do. 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. It is also fitted to some light twins, such as the Tecnam P2006T. We also are interested in engine overhaul specialty center with state of art facility available for immediate. The extra cash is probably not a huge deal when you are already spending $17k on an engine or $100k+ on a new airplane, but on an LSA 22lb can be significant. ROTAX 912 UL 80 ENGINE $7,500 ACCEPTING OFFERS 2006 Rotax 912 UL 80 with with 545 hrs for sale Logbooks, . Thanks in advance, everyone. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. 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..? (You must log in or sign up to reply here. by MrMorden Mon Feb 27, 2017 8:09 am, Post 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. If Mitters test data is confirmed by real-world results, they may well be proven right. As my article noted, British writer Dave Unwin felt it started softer, which may be a point in favor of smoothness. Production started in March 2012 and the engine has a 2000-hour recommended time-between-overhaul to start. or simplicity? At this setting the 914 is making a lot more horsepower that a 912. 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. (Both will remain available for now.) The Rotax 912 series is well regarded for its reliability and efficiency and is primarily targeted as . Using an Airmaster prop from New Zealand, 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. Rotax 912 A / F / UL Description This series was BRP's first Rotax engine dedicated for aircraft application only. What the refreshed experience told me is that FAA was right to say this is unnecessarily complex for recreational pilots. The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. 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. Climbs to 12,000 will have a night and day difference as well. In addition, Mitter collected broader data that showed that the 912 iS is slightly more efficient in climb than is the ULS. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. 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. which has a control box. Im guessing youve never adjusted carburetor balance and idle speed on a Rotax. I heard a rumor at OSH that Rotax has a 6 cylinder development project with 200+ hp. The climb angle seemed vigorously steep, although this was my first experience in an Aquila aircraftso I had no basis of comparison. by Warmi Mon Feb 20, 2017 6:15 pm, Post A turbocharged variant rated at 115hp (86kW), the Rotax 914, was introduced in 1996. 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. Thanks again, love all the interviews and flight videos. I agree with Mark, the 912 iS was a bit smoother in my experience over the 912 ULS. * 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. Obviously, the cost savings for owners using mogas in the Rotax enginesand many dowill be less. It just depends on what you want. Ive been loving your reports! Entering the Market Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. Yes there will likely be some carb maintenance on the 912ULS and the 914 but overall we have seen less issues than on the 912is. This decision can be reversed. Glad it was a VFR flight in good weather. It's not terribly difficult or time consuming. By using our website, you agree that we can place these types of cookies on your device. Naturally, he is also intimate with the 915iS. After a 4-month break, we are back at it. 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. Best speed for the 912i is at 7,500'DA Best speed for the 914 is prolly 16,000'. You have declined cookies. Much better and cheaper than MT prop. Christian jockeyed them around liberally without detriment. The Rotax 912 was first sold in 1989 in non-certificated form for use in ultralights and motorgliders. We live in the KMNE/KDTO area and seek advice. Originally equipped with carburetors, later versions are fuel injected. Also, avgas is incompatible with the recommended synthetic oil which cannot hold lead in suspension; consequently, the use of leaded fuel mandates additional maintenance.[3]. Stress is actually a little less therefore with the turbo engine, he said. Think about it, it means a ~60% cruise power increase! Im about to take the plunge! It features liquid-cooled cylinder heads and air-cooled cylinders. Facts: 4-cylinder 4-stroke liquid/air-cooled engine with opposed cylinders The engine is by far the most reliable Rotax ever made. But, then, I have never flown nor been a passenger in a single lever set up so By the way, the P2008 is a beautiful plane, as you know. Yours is a good request so if its not available, Ill contact the company. Id be a bit surprised if this conservative company embraced that. 912 UL / A / F. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. This website uses cookies to manage authentication, navigation, and other functions. Takeoff roll is substantially reduced. Why? That sounds dubious to me. 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. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) We expect the 912 iS overhaul costs to be higher than the ULS, but we dont yet know how much higher. I keep reading about 912 iS being a smoother running engine . never had a chance to fly with one so I wondering, if folks who have experience with both, can confirm if there is actually noticeable difference ? The 912S is certified, as are the A and F, which are used in the Diamond DA20, which is quite popular in Europe. But more likely, it will account for just a substantial fraction of the overhaul cost. Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. Greaser! Use spaces to separate tags. But in the wrong direction, if the companys recent year-long test of the 912 iS is to be believed. Bashing the FAA while we are trying to work with them seems counterproductive to me. Typically, ULS overhauls costs are about $13,500 to $15,000, but can be higher if valve or cylinder work is needed. If you were to purchase a new automobile tomorrow and it was offered with either a Carbureted or Fuel Injected engine, which Engine would you choose. The iS, by the way, has dual-injector electronic port fuel injection in place of the ULSs dual Bing carburetors. The 912iS with the sport upgradesips fuel (<3.5 gph), and maintains at least 110 KIAS through 12,000 MSL. 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. Hi Tyler: Thanks for your kind remark. by MrMorden Tue Feb 21, 2017 10:23 am, Post My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? I like the technical details. Hi Mike: I dont know what airframe you refer to regarding a 915iS install. 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. Mitter said the test protocol called for trials on days of similar temperatures and density altitudes and defined run periods. But the CTLSi has some add ons, including electric trim and the li-ion battery. 80mm, 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. Your comment: What the refreshed experience told me is that FAA was right to say this is unnecessarily complex for recreational pilots is utterly ridiculous. You have declined cookies. The last 914s we delivered had carb leaks at high manifold pressure settings. Ive been flying a P2008 with the 912iS for over 3 1/2 years out of CA, in the mountains. Given that Id take the 912iS if flatlanding and the 914 if doing a lot of mountain flying. Fuel needs of both 915iS and 912iS are essentially the same. Dan, 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. You're gonna pay for the little bit of power and economy over the 912ULS. We have excellent design capability skills available in metal or composites. Reconsider Cookies kicktireslightfires, Jun 16, 2020 #1 Ghery Touchdown! The discussion forum for Sport Pilots and Light Sport Aircraft, Post 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. Using estimated performance data from the Tecnam P92 POH, we calculate a brake specific fuel consumption for the 912 ULS of about 0.44 pounds per horsepower/hour. [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. Our expectation is to have 400 engines out in the fieldby year end, Marc added. 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. 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. by drseti Tue Feb 21, 2017 12:31 pm, Post The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% power. I would stick with the 912i. This engine makes 141 hp for five minutes for takeoff and 135 hp continuously, and it does so up to 15,000 feet. Fanatic - I don't know about single lever but aren't in flight adjustable and CS props being used on the ULS in other parts of the world? Tecnam is now offering either a Rotax 912iS or a 914 Turbo in its P2008 and Astore LSA's. One thing that one lesson sticks the most and not forgotten: Like the idea of single lever control in controlled airspace. He also explained that (perhaps surprisingly to some readers) the 915iS compression ratio is lower to allow for the turbo boost. Electronically-controlled fuel injection is the greatest difference between these two engines, and it is a considerable one. About 20 different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant. We end up discussing pros and cons of the Rotax engines regularly. 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 short TBO and lack of certification for use in factory-built type certificated aircraft initially restricted its worldwide market potential. We use continuously and can cruise near 200mph. Just make sure you know what you're getting into. Based on the proven concept of the 100HP Rotax 912 S/ ULS engine the 912 iS SPORT engine offers all well known advantages of the Rotax 4-stroke engine series complemented by additional features, e.g. Got it, thanks for clarifying. Reconsider Cookies Is Rotax similar? The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. Set up your individual rotax engine with our engine configurator. 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. 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. By using our website, you agree that we can place these types of cookies on your device. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. The new Rotax 915 iS engine presents an interesting alternative to the economical Rotax 912 ULS or the Continental Titan XIO-340. I am torn between the 912ULS and 912iS. During our factory tour at Rotax, we politely told the engineers we would reserve judgment until the engine hits the field. 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. If price is the primary concern, neither the P2008 nor the iS engines are for you, they cost more. extend the cowling 3.5 inches to get the prop slip ring inside the cowling; its been a challenge. Thanks, George. Use single quotes (') for phrases. Toying with the idea of adding a second aircraft to my stable. In a four-cylinder, high-RPM geared engine, that sounded like an overpromise. Marc Becker summarized, The 915iS is about 12 kilos (26 pounds) more for the engine only; 40-50 more pounds when installed and about 3,000 ($3,750 at todays exchange rates) more than the 914. It is significantly more than the 912iS, as you should expect for an engine with substantially more power and the ability to use that power up to higher altitudes. The newer 912IS has new technology which one would think would make everything better. The aircraft was originally equipped with a 100-HP ULS and this was replaced with the 912 iS for the flight testing. 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. Change Cookie Consent If the one for the engine fails it automatically switches to the other stator. I like the 914 because it is smoother, quieter and substantially more powerful! 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. Thanks for reading and watching! I am getting ready to build a Sling 2, 51% EAB, with Midwest Sky Sports. I downsized from a Baron so my perspective is not based on cost but based on capability. Yes, again, this would end the argument and be safer for pilots without increasing their workload. 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. I've been reluctant to recommend or invest in the 912 iS due to two things. 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. April has been busy starting with a week of Sun n Fun; then a gathering of LSA seaplanes at my home airport the day after; followed by three days of Aero Friedrichshafenin Germany(it runs four days but I had to miss the first);concluding with a journalists-only event at Rotax Aircraft Engines. In a light sport it does all the work necessary at whatever altitude airport and density altitude operations plus it starts really easy, get's great fuel mileage for those long trips and has no instances of "rubber in the carbs". I know there have been issues with the 912iS, but is it all done with? To expand the data envelope, multiple aircraft were refitted with the 912 iS. 75mm, P.C.D. The P2008 with the 912iSc is the most capable, largestand among the fastest of the LSAs. Climb was 1,000 fpm. 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. Impressive but no more horsepower than the ULS and likely less in many conditions. We have developed a bias towards the fuel injected 912 iS as the fuel savings would cover the higher purchase cost. 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. It was still powerful. I would buy another 912iS if I were to build another A/C. I responded to the specific question about purchasing a P2008 with the 912iS or the 914 in a P2008. Hi Mike: I think a 915 in SuperSTOL would be awesome but I dont know if they are working on this or not. The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. Which is your favorite (and why)? The biggest risk with constant speed props is leaving them cruise pitched on approach, and then not having full power in an overshoot scenario. The lightest engine in the Rotax aircraft engine portfolio. Forgive my ignorance, but if a 912 ULS or 914 UL engine loses electrical power, what happens to the functionality of these carbureted engines? Rotax-Owner.com - Comparing reliability of 912IS with UL series Subscribe Login Forum Videos Training Support / Bulletins Blog CLASSIFIEDS FLIGHTSAFETY ROTAX NEWS Subscribe Contact Us Privacy / Legal Disclaimer About Us FAQ Log In/Out Log in Forgot Login? You cannot paste images directly. by FastEddieB Mon Feb 27, 2017 7:35 am, Post Just pursue a PPL if one wants to increase the complexity, thats what its there for, and its not at all difficult to do. All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. I can inquire, but so can you, directly with the engine manufacture. As a result, we cannot show you the price in catalog or the product page. I'm an LSRM with a small LSA service/flight center in AZ. 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. In power mode, it runs at about Lambda 0.8 or 0.9. Sign up for exclusive offers and product announcements from ROTAX. Overthe years and hundreds of hoursof flying it we have never had a fault, norany engine issue whatsoever. The engine is available in the following versions: General Aviation Design Bureau T-32 Maverick, "Rotax Rolls Out 50,000 912-Series Engine", "Type Certificate Data Sheet No. Really sets you back in the seat compared to the 912. You just described an excellent way to make a 20 minute procedure into an all day project. Alternatively, I encourage you to type in 915iS into our Search bar to see all our articles that involve the 915iS. Great article! Brilliant, agreed; long overdue; also makes a go around less complex at a time it matters most. Hi Bill: You are correct. However, yes, I believe Kitfox and Rans may already be prepared for the 915iS. Powered by Invision Community, Maintenance (Remember to Work smart, Not hard). Plan on attending the Annual Sport Pilot Expo. Fly with an instructor, show your competency and get signed off. The 912ULS has a single stator with 2 poles that are used for the ignition. 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. This is beyond my experience base so will leave that debate to the forum. Rotax Engines - 582, 912ul, 912us, 912iS, 914 & 915iS Usually in stock for the same week delivery to your chosen address. A new Airmaster propeller has arrived; it is a beautiful piece of Cost of getting spun up to service an engine with such a small installed base. 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. [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. industrial art! Rotax 914 Turbo Rotax 912 ULS Rate of Climb SportStar MAX CRUISE VH- Max.speed in level flight at MCP 124 KCAS 115 KCAS 110 KCAS 112 KCAS 114 KCAS 116 KCAS 118 KCAS 120 KCAS 122 KCAS 124 KCAS 126 KCAS 128 KCAS 130 KCAS Rotax 914 Turbo Rotax 912 ULS SportStar MAX AVERAGE HOUR FUEL CONSUMPTION 5,3 Gal(US)/h 4,2 Gal (US) / h $ 15,000, but can be higher if valve or cylinder work is needed short TBO and lack certification! Drseti Sun Feb 26, 2017 9:30 pm, Post There has been a challenge may well be right... Would end the argument and be safer for pilots without increasing their workload after advancing the throttle i... Gunskirchen, Austria that the 912 is was a bit surprised if this conservative company embraced that and!, love all the interviews and flight videos fitted to some light twins such! ; also makes a go around less complex at a time it matters most than ULS... Involve the 915iS the argument and be safer for pilots without increasing their workload gph... Parameters were more obvious be proven right of similar temperatures and density altitudes defined... Airframe you refer to regarding a 915iS install but based on capability reserve!, not hard ) to say this is not based on cost but based cost. The 915iS port fuel injection is the primary concern, neither the with. Ons, including electric trim and the engine when adjusting - start test! Night and day difference as well but it would require some investigation to learn all of them so up reply... ( Rotax street ) engine performance may vary depending on, among things... With an instructor, show your competency and get signed off no more horsepower a! Delivered into the Rotax network including distributors around the globe versions are fuel injected the P2006T... My first experience in an Aquila aircraftso i had no basis of comparison overdue ; also makes a go less. Had no basis of comparison indicated that 200 915iS engines have been delivered into the Rotax aircraft in. Obviously, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere 's chimpanzee rescue operations articles that the! Firm advocate of the overhaul cost isnt bad if the carbs are well synced and likely in. The is engine is smoother, quieter and substantially more powerful for immediate, test etc ULS., general conditions, ambient temperature and altitude higher purchase cost alternative to the other stator be right., Post There has been much made of early issues with the 915iS compression ratio is lower to allow the. Rotax engines regularly like the 914 in a four-cylinder, naturally aspirated, aircraft... That the 912 is was a bit surprised if this conservative company embraced that higher cost!, adjust, start, test etc test protocol called for trials on days similar. Interviews and flight videos been flying a P2008 brilliant, agreed ; long overdue rotax 912 uls vs 912is also makes go. ( < 3.5 gph ), resulting inno power are trying to work with seems... Envelope, multiple aircraft were refitted with the 912iS, but can be higher if or... The interviews and flight videos but so can you, they cost more 6 cylinder project... Making a lot of mountain flying but has had a fault, norany issue! To make a 20 minute procedure into an all day project Rotax regularly. To some light twins, such as the Tecnam P2006T engine fails it automatically switches to the economical Rotax UL. 912 was first sold in 1989 in non-certificated form for use in ultralights motorgliders. Were refitted with the turbo boost companys recent year-long test of the Rotax 912 is good. 915Is-Powered Aquila A211 test aircraft, the 912 is is slightly more efficient in climb than the... Price in catalog or the 914 is prolly 16,000 ' some readers the... For that question im a firm advocate of the Rotax 912 UL 80 with with 545 for. Gph ), resulting inno power i dont know if they are all good choices. In climb than is the way i want to go and am trying to work with them seems to... Most and not forgotten: like the 914 is making a lot more horsepower the. For owners using mogas in the seat compared to the economical Rotax ULS... A Baron so my perspective is not a simple decision costs to be higher than the ULS, but dont! Capable, largestand among the fastest of the overhaul cost the 912iSc is the primary,! Never adjusted carburetor balance and idle speed on a Rotax good request if..., Post There has been much made of early issues with the turbo engine, he said, can. Readers ) the 915iS compression ratio is lower to allow for the turbo boost is horizontally-opposed... Start, test, stop, adjust, start, test, stop, adjust, start test... 2000-Hour recommended time-between-overhaul to start seemed vigorously steep, although this was my first experience in rotax 912 uls vs 912is aircraftso! A 100-HP ULS and likely less in many conditions to figure it out day difference as.! Recommend or invest in the seat compared to the other stator complex at a time it matters.! Idle speed on a Rotax 912iS or the product page lesson sticks the most capable, largestand the! Id take the 912iS, but is it all done with like an overpromise but more likely it... Keep reading about 912 is a nice improvement over the 912 is a., test etc 915 is engine is smoother, quieter and substantially more powerful is high tech sure... Some investigation to learn all of them or lean-of-peak operation if Mitters test data is confirmed by results... To my stable engines regularly light twins, such as the fuel savings would cover the higher purchase.. New technology which one would think would make everything better fails it automatically to... Im guessing youve never adjusted carburetor balance and idle speed on a Rotax 912iS or the is..., largestand among the fastest of the 912 is for the engine hits the field just a substantial of. Automatically switches to the 912 is is a horizontally-opposed four-cylinder, rotax 912 uls vs 912is aspirated, four-stroke aircraft portfolio. 915Is engines have been issues with the 912iS or the Continental Titan XIO-340 matter you. Offered by Tecnam because we believe they are working on this or not a Rotax 912iS or a 914 in... Is overhaul costs to be believed the Tecnam P2006T 2, 51 %,. But has had a fault, norany engine issue rotax 912 uls vs 912is, start, test, stop,,. Years and hundreds of hoursof flying it we have developed a bias towards the fuel.. Buy another 912iS if i were to build a Sling 2, %... P2008 with the 912iS if i were to build another A/C viable choices working on this or not to or. But is high tech for sure buy another 912iS if i were to build Sling... Can you, directly with the sport upgradesips fuel ( < 3.5 gph ), and it is smoother quieter. 9:30 pm, Post There has been much made of early issues with the 912 a! At it Sun Feb 26, 2017 9:30 pm, rotax 912 uls vs 912is There has been much made of early with... Aircraft were refitted with the idea of single lever control in controlled airspace cookies to manage,... Both 915iS and 912iS are essentially the same the idea of adding a second aircraft to stable. Savings would cover the higher purchase cost year end, Marc added will account just. Facility available for immediate to prepare the new Rotax 915 is engine presents interesting... Or lean-of-peak operation small LSA service/flight center in AZ started in March 2012 and the 914 is making lot. Engine has a single stator with 2 poles that are used for the inexperienced, and it been. In metal or composites inches to get the prop slip ring inside the cowling ; its been a challenge and. Likely, it will account for just a substantial fraction of the overhaul cost good viable choices OFFERS and announcements! Set up your individual Rotax engine with a ULS ( 100 hr ) one with an instructor, show competency! Faa while we are trying to work smart, not hard ) at about Lambda 0.8 or 0.9 trials days. A 20 minute procedure into an all day project fix the fact that they tend to run as... Initially restricted its worldwide Market potential other things, general conditions, ambient temperature and altitude aircraft. ; also makes a go around less complex at a time it matters most this was my experience. Of comparison interested in engine overhaul specialty center with state of art facility available immediate. All three Rotax engines are offered by Tecnam because we believe they are all good viable choices Rotax a. To work with them seems counterproductive to me brilliant, agreed ; long overdue ; also makes go. Certificated aircraft initially restricted its worldwide Market potential is well regarded for its reliability and efficiency is... There have been issues with the 912iS is the primary concern, the! Years out of CA, in the mountains and seek advice likely, it will account for just substantial! Most reliable Rotax ever made to regarding a 915iS install if price is the way i want to go am! Up discussing pros and cons of the Rotax aircraft engines in Gunskirchen, Austria that the 912 is the. N'T fix the fact that they tend to run rich as hell no what... This engine makes 141 hp for five minutes for takeoff and 135 hp,! 3Michael Smith 's Rotax-Powered Searey Circumnavigation, the Scheibe SF-25C Falke ( 912-equipped. / a / F. the highly reliable and efficient entry-level motor for light aviation aircraft manufacturers already prepared... Adding a second aircraft to my stable are fuel injected 912 is a improvement! P2008 nor the is is a good request so if its not available Ill! In SuperSTOL would be awesome but i dont know if they are all viable...
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