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. by drseti Sun Feb 26, 2017 9:30 pm, Post 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. It features liquid-cooled cylinder heads and air-cooled cylinders. This compares favorable to typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak. Plan on attending the Annual Sport Pilot Expo. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. I used to synch the carbs on motorcycles myself and found it easy. The Astore is not hard to get in and out of but just not as easy as the 2008. But even with the same amount of fuel the turbo engine is more efficient because the air flows inside the chamber without been aspirated. Your concerns about pilot workload with a constant speed prop can be addressed by single lever control, an automated prop configuration. That's a $12,700 price premium or about 9 percent. Change Cookie Consent Such an aircraft is far outside our area of reporting. 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. Gas vs. Diesel Rotaxs tests validate a trend thats been apparent in the automotive industry for two decades. Price does not included shipping. We live in the KMNE/KDTO area and seek advice. 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. Carburetors are old technology, not well suited to different altitudes, step up to the 1980's and get a fuel-injected engine. and ROTAX factory in Gunskirchen, Austria. Please, advertisements for Viagra will be promptly deleted!". A highlight for private pilots and enthusiasts, this limited-edition design of our popular Rotax 912 iS Sport aircraft engine comes with a unique service and warranty package. The 915iS fuel injected, turbocharged, and intercooled engine can produce 141 horsepower for five minutes, then sustain 135 horsepower indefinitely. An Astore with 912iS and a P2008 with the 914 :-). Experienced pilots may prefer the control implied by working the levers just as some drivers prefer a stick shift car to an automatic transmission. 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 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. Hi Pat: You have only to ask Just Aircraft about their plans regarding Rotaxs 915iS. The iS has more components, including the fuel injection system, ECUs and dual, high-pressure fuel pumps. But more likely, it will account for just a substantial fraction of the overhaul cost. Disadvantages? I have full confidence Rotax will get it 100% but as of today I'm still more comfortable behind the carb engines. Your link has been automatically embedded. Greaser! 912 UL / A / F 80 HP. 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? Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. Sign up for exclusive offers and product announcements from ROTAX. This decision can be reversed. Much better and cheaper than MT prop. That requires the not cheap computer dongle (of which there are 4 levels) and the BUDS software. 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. Boththe P2008 and the Astoreare great planesjust like the Flight Design and because I like one better doesn't meanothers will. I have always been drawn to the fit and finish of Tecnam. 75mm, P.C.D. 2023 Leading Edge Air Foils, LLC. Electronically-controlled fuel injection is the greatest difference between these two engines, and it is a considerable one. I have constant speed prop time, a fair bit of it, but that was some years in my past. FAA Regulation Update Fall 2022. I have been thinking ULS for great history, lower cost, lower weight, etc. continuous power at 5500 1/miniS: ASTM compliant | iSc: certified according to EASA CS-E. Yours is a good request so if its not available, Ill contact the company. When zipping along faster than 170 miles an hour true, consumption rose to the 7-9 gph range. Belvoir Media Group, LLC. I would stick with the 912i. Ill leave this forum to the CT crowd who know that very capable airframe. List ByDanJohnson.com all LSA Services each one verified to have the airplane or expertise you seek. The 912ULS has a single stator with 2 poles that are used for the ignition. Paste as plain text instead, My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? We focus exclusively on Light-Sport Aircraft, kit aircraft a Sport Pilot can fly, and ultralight aircraft. Late to this party, I fly constant speed props and appreciate them. Bill Hertzel Rotax 912is North Ridgeville, OH, USAClicking the "Thank You" is Always Appreciated by Everyone. 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. In power mode, it runs at about Lambda 0.8 or 0.9. The 912 ULS makes 100 hp at sea level, declining in power at the standard 3% per thousand feet as it . A year-long test by the company shows that the 912 iS delivers up to 30 percent better fuel economy than the 912 ULS. 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. Climbs to 12,000 will have a night and day difference as well. *** DeLand Showcase yes, Ill be present, dashing about gathering article material and shooting videos. Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. For most recreational pilots its an unnecessary distraction in the cockpit. The new Rotax 915 iS engine presents an interesting alternative to the economical Rotax 912 ULS or the Continental Titan XIO-340. Plugging that number into Rotaxs data reveals a to-TBO cost savings of about $13,000not quite the total overhaul nut, but no trivial sum, either. Lubrication is dry sump, and fuelling is via dual CV carburetors or fully redundant electronic fuel injection. The UL Power has fuel injection 3. [I am] building a Just Aircraft SuperSTOL with rotax 915 engine not a simple task! Rotax 912ULS with tuned exhaust in a Dyn'Aro MCR01 with 3-blade hydraulic CSU propeller. I've been reluctant to recommend or invest in the 912 iS due to two things. With the 912i my CT would be 127+ kts top speed. . The Rotax 912 was first sold in 1989 in non-certificated form for use in ultralights and motorgliders. extend the cowling 3.5 inches to get the prop slip ring inside the cowling; its been a challenge. I enjoyed two flights with Rotax pilot Christian Sixt; this image places us in the Aquila at the Wels airfield where a large club operation is quartered. Rotax 912 iS Efficiency: Better than Claimed, Mid-Continent Flex: Versatile and Vibrant, PPL Training Courses: Sportys, MzeroA Top. The short TBO and lack of certification for use in factory-built type certificated aircraft initially restricted its worldwide market potential. We have excellent design capability skills available in metal or composites. As my article noted, British writer Dave Unwin felt it started softer, which may be a point in favor of smoothness. 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=1125348597, 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. I heard a rumor at OSH that Rotax has a 6 cylinder development project with 200+ hp. New FI.R.M. Flying the new 915iS in an Aquila light aircraft. Obviously, the cost savings for owners using mogas in the Rotax enginesand many dowill be less. Thanks in advance, everyone. 1. Brilliant, agreed; long overdue; also makes a go around less complex at a time it matters most. The 80hp (60kW) versions are sufficient to power the new generation of efficient motorgliders, such as the Pipistrel Sinus and the Urban Air Lambada. Use spaces to separate tags. [5] In addition to the lower fuel consumption, the 912 is certified to run on automotive fuel (mogas), further reducing running costs, especially in areas where leaded avgas is not readily available. 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? In my opinion as an engineer the supercharger is safer and for that reason even with the parasitic power draw. Definitely much better than when it was first released though. We also are interested in engine overhaul specialty center with state of art facility available for immediate. When CS prop approval hits, many owners with carbd engines will likely regret their decision. Stress is actually a little less therefore with the turbo engine, he said. In a four-cylinder, high-RPM geared engine, that sounded like an overpromise. * 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. I am torn between the 912ULS and 912iS. If the latter is not familiar to you, dont worry about the detail for now but see an important point below*. 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. The hardest part is having to get so close to a spinning prop. by MrMorden Tue Feb 21, 2017 10:23 am, Post In terms of the CS prop, as I understand it, there is only one solution for US-LSAs being evaluated,and that is for a single lever control, and only the iS engines are able to interface with this system. by 3Dreaming Sun Feb 26, 2017 10:35 pm, Post I would prefer the 914 if I was you. 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. News & Video on Light-Sport Aircraft, Sport Pilot Kits, and Ultralight Aircraft, April 26, 2018 by Dan Johnson 37 Comments. 2:43:1 Gear Reduction, Electric Start and Engine Mount. Thanks. Eighteen months later, it has and just as we suspected, Rotaxs initial claims were off the mark. 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With 200+ hp shooting videos for just a substantial fraction of the overhaul cost 2!
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