I've been reluctant to recommend or invest in the 912 iS due to two things. 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. Christian jockeyed them around liberally without detriment. Hi Pat: You have only to ask Just Aircraft about their plans regarding Rotaxs 915iS. Roger Lee LSRM-A & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield (KRYN)520-349-7056 Cell. 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. But more likely, it will account for just a substantial fraction of the overhaul cost. I would prefer the 914 if I was you. Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. 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.. by drseti Tue Feb 21, 2017 12:31 pm, Post This page was last edited on 3 December 2022, at 14:57. Rotax 912 S/ULS. Its quite a bit more costly and is more power than needed on Aerotrek. 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. but 100 hp continuous. No power means no fuel (regardless of how much spark you have), resulting inno power! Electronically-controlled fuel injection is the greatest difference between these two engines, and it is a considerable one. 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 short TBO and lack of certification for use in factory-built type certificated aircraft initially restricted its worldwide market potential. Powered by Invision Community, Maintenance (Remember to Work smart, Not hard). Heres our video on a system called Single Lever Control, which LAMA has promoted with some success to FAA for consideration in their ongoing Rulemaking update to LSA and Sport Pilot. We have been conned into the cheap bolt on turbo extra power. 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 . by MrMorden Tue Feb 21, 2017 10:21 am, Post Rotax 912 iS Sport. 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. With the 912i my CT would be 127+ kts top speed. You just described an excellent way to make a 20 minute procedure into an all day project. which has a control box. When you get up a bit higher your 100 hp non turbo will be making probably about 60 hp but the turbo is still making sea level hp up to about 16000, after that it drops off a little. Your link has been automatically embedded. It's 3.5 gallons (45min) of fuel, or an extra overnight bag. The iS has more components, including the fuel injection system, ECUs and dual, high-pressure fuel pumps. Best of both worlds, fuel injected and turbo! 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. Mitter said the test protocol called for trials on days of similar temperatures and density altitudes and defined run periods. I have full confidence Rotax will get it 100% but as of today I'm still more comfortable behind the carb engines. Glad you liked the article. Rotax Engines - 582, 912ul, 912us, 912iS, 914 & 915iS Usually in stock for the same week delivery to your chosen address. Thank you so much. 912 UL / A / F. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. By using our website, you agree that we can place these types of cookies on your device. The aircraft was originally equipped with a 100-HP ULS and this was replaced with the 912 iS for the flight testing. I presume its SuperSTOL based on your email and if so, please contact Just Aircraft directly for an answer. Set up your individual rotax engine with our engine configurator. Must be due to the turbocharger and lower compression ratio. In power mode, it runs at about Lambda 0.8 or 0.9. List ByDanJohnson.com all LSA Services each one verified to have the airplane or expertise you seek. ). I think LSA/SLSA is the way I want to go and am trying to figure it out. Hi, Mark Gregor from Advanced Aircraft/Tecnam US here. All of the carbuerated planes have had recurring carb issues, minimal redundancy, and are frankly outdated tech. You cannot paste images directly. We already do it for Light Sport and to Light Sport Sea. . Shaft with flange for fixed pitch propeller P.C.D. After a 4-month break, we are back at it. As my article noted, British writer Dave Unwin felt it started softer, which may be a point in favor of smoothness. I have a 912iS with 230 hrs. engine management system. For that question Im a firm advocate of the injected engine. The complete package presents the latest technology in the aircraft engine industry and will enhance the flying and ownership experience of pilots. 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. 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. Hey Dan, thanks for all the great videos. and ROTAX factory in Gunskirchen, Austria. 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. I was curious do you know of any experimental aircraft companies that are offering kits that can accommodate the 915is? 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. You can post now and register later. Engine with the best-in-class power-to-weight ratio. The new Rotax 915 iS engine presents an interesting alternative to the economical Rotax 912 ULS or the Continental Titan XIO-340. by jetcat3 Sun Feb 26, 2017 2:01 pm, Post 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. Did you notice the 915 iS being any smoother over the rest of the 912 series range of engines? 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. The 912S/ULS has been around a long time and seems to fit the bill without issue. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. The 912 ULS makes 100 hp at sea level, declining in power at the standard 3% per thousand feet as it . 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. Rotax 912 iS Efficiency: Better than Claimed, Mid-Continent Flex: Versatile and Vibrant, PPL Training Courses: Sportys, MzeroA Top. Hey thinking about a 915 on a superstol. The 912iS requires a more robust installation, as mentioned, things like metal fuel lines which require exact fits, unlike rubber hose, butit also requires the sensor tiedownkit, which is a few hundred dollar kit,with sensor specific tie downs to eliminate false alarms due to sensor vibration. The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. Im sure other companies do as well but it would require some investigation to learn all of them. Would end the argument. The 914 cruises at 35 inches manifold continuous. Paste as plain text instead, *** I didnt notice the 915iS was more smooth than the 912iS I flew later that day, but it was certainly a smooth-running engine. The Rotax is $2092 cheaper 2. Ill leave this forum to the CT crowd who know that very capable airframe. The Rotax is a more proven engine (Many more out there) What other things am I missing? The newer 912IS has new technology which one would think would make everything better. Prices shown are in USD. Rotax engine experts felt most of this is attributable to software and the same code can also be applied to the 912iS. This website uses cookies to manage authentication, navigation, and other functions. Rotax 912iS versus the 914 Turbo - Which One. Im happy to talk more at our e-mail or even here. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. This is a surprisingly common accident factor in floatplanes in particular for whatever reason. It can do what the 912 can't and you could really use it because you are surrounded by mountains. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. The new Sport Pilot rule makes flying affordable! Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. Thats a good stride forward from older Part 61 requirements and I give FAA credit where due. The electronic fuel injected Rotax 912iS is a recent development. Christian demonstrated that you can move the throttle and prop control without my experience of adjusting each very cautiously and slowly. Ive been flying a P2008 with the 912iS for over 3 1/2 years out of CA, in the mountains. We are interested in development of sea plane with passenger capacity of 15 plus passenger with a turbine twin engines. Beginning the build on my S-20 and I am torn between these two engines. Reconsider Cookies Do you have an update? All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. - All Rights Reserved. The manual adds that non-compliance with such warnings could lead to serious injury or death.[10]. While from different manufacturers the two airframes I tested were more alike than different. Electronic fuel injection requires electrons. I am torn between the 912ULS and 912iS. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. I like the technical details. Clear editor. To get below 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true or 85 indicated. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. because I thought you saved a lot of carburator work, hence 912iS being simpler.. but I'm no expert. Your email address will not be published. My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? Mainly, though, I felt the 912iS engine is better suited to the light aircraft I cover on this website. (Both will remain available for now.) by drseti Sun Feb 26, 2017 9:30 pm, Post Thanks in advance, everyone. Four-stroke piston engine with four liquid 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. Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. It has proven reliability. 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. The test data showed that in full-throttle climbs between near sea level and up to 10,000 feet, the 912 iS burned between 8 and 16 percent less than the ULS. Im about to take the plunge! Hence the push for single lever control, a simpler way to handle in-flight prop control. We have been having to do 75mm, P.C.D. As the fast car guys say, Speed costs money. Of these, 120 are now with end customers, he noted. Turbo exhaust failure makes for a great blow torch. a lot of modifications to accomodate the 915 and Airmaster prop. For everyone else simplicity is probably best. 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. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. 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. Please contact Just Aircraft. Flying Sting S4 ( N184WA ) out of Illinois. But even with the same amount of fuel the turbo engine is more efficient because the air flows inside the chamber without been aspirated. 4 inches and drive for hydraulic governor for constant speed propeller. Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. Why? Notify me of follow-up comments by email. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) A key reason this is possible is because of liquid cooling versus my older experience in air-cooled legacy engines, for example, in a Cessna 182 Skylane. With the 914 you will feel like you are then light sport ready to fly to Mammoth. You do not have permissions to reply to this topic. Plan on attending the Annual Sport Pilot Expo. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. This decision can be reversed. I hope you enjoy! Copyright @2018 CTFlier.com I've yet to dig through the manual, guys, but I think Andy nailed it. New FI.R.M. Low-weight engine with excellent performance at high altitudes. I would still prefer fuel injection - when was the last time your car engine died ? By using our website, you agree that we can place these types of cookies on your device. The Rotax 912 series is well regarded for its reliability and efficiency and is primarily targeted as . After trying to get my bearings with ATC, I landed uneventfully. As a result, we cannot show you the price in catalog or the product page. Yes, only Aerotrek can advise about the 915 availability. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. Think about it, it means a ~60% cruise power increase! 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.

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