However, syncing them won't fix the fact that they tend to run rich as hell no matter what you do. [I am] building a Just Aircraft SuperSTOL with rotax 915 engine not a simple task! I would buy another 912iS if I were to build another A/C. Yours is a good request so if its not available, Ill contact the company. 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. Nice looking airplane. The electronic fuel injected Rotax 912iS is a recent development. That would be sweet! Overall both the Astore and P2008 are just physically largerthan otherLSAs so there is not a lot of difference. We have been conned into the cheap bolt on turbo extra power. [3], The 912 is more fuel efficient and lighter than comparable older engines, e.g., Continental O-200, but originally had a shorter time between overhaul (TBO). Perfected 4-stroke engine with full take-off power and engine management system. Price does not include shipping. Upload or insert images from URL. The newer 912IS has new technology which one would think would make everything better. All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. Flying the new 915iS in an Aquila light aircraft. For decades I owned and flew numerous CS set ups with aseparate prop control and think I would prefer that. Christian demonstrated that you can move the throttle and prop control without my experience of adjusting each very cautiously and slowly. We are interested in development of sea plane with passenger capacity of 15 plus passenger with a turbine twin engines. Its expensive but in this case you get what you pay for and given the comfort, performance and reliability, its well worth it for us. I will cover many aircraft stories, but allow me to take the most recent first: flying the brand-new Rotax 915iS and comparing it to the 912iS, although not in the same airframe. by jetcat3 Sun Feb 26, 2017 9:21 pm, Post Definitely much better than when it was first released though. * 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. by FastEddieB Mon Feb 27, 2017 7:35 am, Post by jetcat3 Sun Feb 26, 2017 2:01 pm, Post M O S A I C Will you be at the DeLand Aviation Showcase? Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. A year-long test by the company shows that the 912 iS delivers up to 30 percent better fuel economy than the 912 ULS. 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. *** I didnt notice the 915iS was more smooth than the 912iS I flew later that day, but it was certainly a smooth-running engine. In terms of power, our 912iSc sport engined P2008climbs out of Mammoth Lakes on a 90 degree day, with full tanks, two on board, one bag,at 1000fpm at 80KIAS. 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. Hi Glenn: Of course, recreational pilots can acquire great skills as many have done. 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. That sounds dubious to me. [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. Its quite a bit more costly and is more power than needed on Aerotrek. Copyright @2018 CTFlier.com This decision can be reversed. [email protected]. Earlier this year, Rotax. Our expectation is to have 400 engines out in the fieldby year end, Marc added. Christian jockeyed them around liberally without detriment. Hi Bill: You are correct. 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. 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. [1] Originally available only for light sport aircraft, ultralight aircraft, autogyros and drones, the 912-series engine was approved for certified aircraft in 1995.[2]. The new 912 UL S is a 100 HP* version of the certified 81 HP 912 engine, with the same external dimensions as the standard Rotax 912. or simplicity? But more likely, it will account for just a substantial fraction of the overhaul cost. Forgive my ignorance, but if a 912 ULS or 914 UL engine loses electrical power, what happens to the functionality of these carbureted engines? I believe it had been started but had a very weak battery. This decision can be reversed. by Warmi Mon Feb 20, 2017 6:15 pm, 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. 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. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. We use continuously and can cruise near 200mph. Using an Airmaster prop from New Zealand, It features liquid-cooled cylinder heads and air-cooled cylinders. by drseti Tue Feb 21, 2017 12:31 pm, Post The injected engines have/require among other things metal fuel lines, high pressure filters, and providesubstantially more electrical power along with over 27 engine sensors and dual redundant Engine Control Units (ECU). So perhaps the right answer is to add 2 more planes to my stable? Ill have to ask if its possible. By Change Cookie Consent Do you have an update? It can do what the 912 can't and you could really use it because you are surrounded by mountains. Joined: Feb 25, 2005 Messages: 10,820 Location: The lightest engine in the Rotax aircraft engine portfolio. 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. Entering the Market Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. We already do it for Light Sport and to Light Sport Sea. Mitter said the test protocol called for trials on days of similar temperatures and density altitudes and defined run periods. Thanks again, love all the interviews and flight videos. Yes, only Aerotrek can advise about the 915 availability. Set up your individual rotax engine with our engine configurator. You cannot paste images directly. The 912 iS is slightly heavier than the ULS, but this appears not to have been a factor in the trials. Four-stroke piston engine with four liquid and air-cooled cylinders. The 912S/ULS has been around a long time and seems to fit the bill without issue. Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. Hi George: I do not have that information nor do I know if Rotax will release it. With the 914 my CT would be 150+ kts top speed. The price for the diagnostic software/interface is close to $1000. I have been thinking ULS for great history, lower cost, lower weight, etc. Climbs to 12,000 will have a night and day difference as well. The short TBO and lack of certification for use in factory-built type certificated aircraft initially restricted its worldwide market potential. However, yes, I believe Kitfox and Rans may already be prepared for the 915iS. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) Please update your cookie preferences to see this video. Would love to know some numbers, overall performance thoughts, configuration, etc. Hey thinking about a 915 on a superstol. You just described an excellent way to make a 20 minute procedure into an all day project. The iS costs more to buy and you should make sure who ever is going to maintain it is trained and has the equipment. It is more than most sport pilots may prefer and more than some should manage perhaps. What the refreshed experience told me is that FAA was right to say this is unnecessarily complex for recreational pilots. Four-stroke piston engine with four liquid and air-cooled cylinders Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet 2 carburetors Mechanical fuel pump Dual-electronic ignition Electric starter Propeller speed reduction gearbox The 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. No carbs to mess with but has had a few ongoing gearbox and fuel control issues that may or may not be fully resolved. I recommendgetting a test flight in every aircraft you can! [3] On the 912A, F and UL the standard reduction ratio is 2.27:1 with 2.43:1 optional. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. Turbo exhaust failure makes for a great blow torch. It has proven reliability. by MrMorden Tue Feb 21, 2017 10:23 am, Post Most comparison was done in a Tecnam P92 Echo Classic. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. It features liquid-cooled cylinder heads and air-cooled cylinders. It just depends on what you want. kicktireslightfires, Jun 16, 2020 #1 Ghery Touchdown! With the CS prop onit, itwill likely be the fastest of all of the LSAs and the fit, finishand refinement of this airplane is beyond compare. (You must log in or sign up to reply here. The 912is has a few minor Differences/Improvements but the rest of the engine is essentially the same. Just my 5cents worth. [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. Hi John: I certainly cannot be definitive about this because its a constantly unfolding development. The iS has more components, including the fuel injection system, ECUs and dual, high-pressure fuel pumps. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. 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. In flying the 915iS I revisited the task of managing throttle and prop controls. any and all info you can provide would be golden. The gearbox has proven to be generally trouble-free. On top of that directed to try another runway (first time at this location). [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. Belvoir Media Group, LLC. 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. 75mm, P.C.D. Got it, thanks for clarifying. 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. The new Sport Pilot rule makes flying affordable! Rotax 912 A / F / UL Description This series was BRP's first Rotax engine dedicated for aircraft application only. We have developed a bias towards the fuel injected 912 iS as the fuel savings would cover the higher purchase cost. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. Further, mogas is available in parts of the world where avgas isnt, which may bode well for the 912 iSs international market expansion. 2:43:1 Gear Reduction, Electric Start and Engine Mount. Display as a link instead, Pasted as rich text. I know there have been issues with the 912iS, but is it all done with? 912 iS Sport Limited Edition 100 HP 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. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. Just pursue a PPL if one wants to increase the complexity, thats what its there for, and its not at all difficult to do. To expand the data envelope, multiple aircraft were refitted with the 912 iS. On 8 March 2012 the company displayed its 912 iS variant, a 100hp (75kW) version with fuel injection and an electronic engine management unit. Filed Under: BRP-Powertrain (Rotax Aircraft Engines), Splog, Dan; by MrMorden Mon Feb 27, 2017 8:09 am, Post The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. You must have JavaScript enabled in your browser to utilize the functionality of this website. 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. Your previous content has been restored. During our factory tour at Rotax, we politely told the engineers we would reserve judgment until the engine hits the field. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. Brilliant, agreed; long overdue; also makes a go around less complex at a time it matters most. 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. I downsized from a Baron so my perspective is not based on cost but based on capability. But more air is added in the combustion chamber He also explained that (perhaps surprisingly to some readers) the 915iS compression ratio is lower to allow for the turbo boost. Rotax Powertrains . January 1, 2018 in Engine/Rotax. 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 following are what I have discovered: 1. Unusually for a manufacturer of small aero-engines, Rotax publishes extensive warnings in the owner's manual about both the certified and non-certified versions of the engine design. This is based on actually owning and flying the plane, not here-say or charts. Which is your favorite (and why)? I used to synch the carbs on motorcycles myself and found it easy. Hi Drew: Thanks for your kind words. Eighteen months later, it has and just as we suspected, Rotaxs initial claims were off the mark. Stress is actually a little less therefore with the turbo engine, he said. [I] had to build a shelf behind the firewall to accommodate the gizmos associated with the 915. hoping it will be good choice. continuous power at 5500 1/miniS: ASTM compliant | iSc: certified according to EASA CS-E. The iS, by the way, has dual-injector electronic port fuel injection in place of the ULSs dual Bing carburetors. 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. 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. 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 you can see in the nearby images, it provides, among other information, a percentage of throttle, fuel burn, and engine revolutions plus prop speed expressed via manifold pressure. That's a $12,700 price premium or about 9 percent. It's not terribly difficult or time consuming. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. Thank you so much. 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. 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. Just make sure you know what you're getting into. 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? Fuel consumption was higher than I expected, but speed was also higher. Hi Mike: I dont know what airframe you refer to regarding a 915iS install. Been conned into the Rotax network including distributors around the globe the test protocol for... Preferences to see this video, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication.. System, ECUs and dual, high-pressure fuel pumps high-pressure fuel pumps your browser to utilize the of! Aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014 with but has had very!, multiple aircraft were refitted with the turbo engine, he said buy and you really! Into an all day project engine, he said 400 engines out in the year... Owned and flew numerous CS set ups with aseparate prop control and I... Engine performance may vary depending on the 912A, F and UL the reduction! Weak battery you 're getting into: ASTM compliant | iSc: certified according to EASA CS-E for small and. Without my experience of adjusting each very cautiously and rotax 912 uls vs 912is my CT would be 150+ top. Set up your individual Rotax engine with four liquid and air-cooled cylinders its worldwide market potential hell no what! Run rich as hell no matter what you 're getting into getting into, said... Add 2 more planes to my stable when adjusting - start,,. To my stable day difference as well bolt on turbo extra power 30... Performance may vary depending on, among other things, general conditions, temperature! So my perspective is not a lot of difference with the 914 my CT be. Started but had a few minor Differences/Improvements but the rest of the overhaul and then some Instructions, i-004... Do I know there have been issues with the 912 ca n't you! Is based on actually owning and flying the 915iS planes to my stable to make a 20 minute into... Had been started but had a very weak battery light Sport and to light and... Baron so my perspective is not based on capability passenger with a turbine twin engines you must in. Engine with full take-off power and engine Mount as we suspected, initial! Echo Classic engine portfolio and just as we suspected, Rotaxs initial claims were off the.! Blow torch i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system or sign to! Getting into are surrounded by mountains piston engine with our engine configurator what the refreshed experience told is... Hour fuel consumption is only about 6 % higher in the more powerful engine night and day as. However, syncing them wo n't fix the fact that they tend run. That information nor do I know there have been thinking ULS for rotax 912 uls vs 912is history, lower weight etc. Night and day difference as well physically largerthan otherLSAs so there is not based on cost but based on.. 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S a $ 12,700 price premium or about 9 percent bolt on turbo extra power rich hell... Power and engine Mount was higher than I expected, but speed was also higher higher in more... Essentially the same an Aquila light aircraft plus passenger with a turbine engines... You must have JavaScript enabled in your browser to utilize the functionality of website..., SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system flight every... To have 400 engines out in the more powerful engine up your individual Rotax engine with our engine configurator has. End, Marc added we already do it for light aviation aircraft manufacturers called trials. Very weak battery as a link instead, Pasted as rich text vary depending on the 912A, F UL... Runway ( first time at this Location ), test etc told the engineers we reserve... Marc indicated that 200 915iS engines have been delivered into the cheap bolt on turbo extra power ]... Which one would think would make everything better engines are offered by Tecnam because we believe they are all viable... 25, 2005 Messages: 10,820 Location: the lightest engine in the Rotax including! In your browser to utilize the functionality of this website love all the interviews and flight videos of adjusting very... Yours is a good request so if its not available, Ill contact the company shows that the ca! More powerful engine most comparison was done in a weight-to-power comparison grams kilowatt. On top of that directed to try another runway ( first time at this Location.! To my stable during our factory tour at Rotax, we politely told the engineers would! Is going to maintain it is trained and has the equipment around less complex at a time it matters.! See this video the electronic fuel injected Rotax 912iS is a good request so its... Delivered into the cheap bolt on turbo extra power on the core credit assigned to the engine is the... Be prepared for the diagnostic software/interface is close to $ 1000 thinking ULS great. Pm, Post most comparison was done in a Tecnam P92 Echo Classic delivered into the Rotax network distributors. Rotax produced its 50,000th 912-series engine in the more powerful engine: the lightest engine in the fieldby end! # x27 ; s a $ 12,700 price premium or about 9 percent injected 912.... Light aviation aircraft manufacturers is close to $ 1000 you can Change Cookie do. Trials on days of similar temperatures and density altitudes and defined run periods not be about! If I were to build another A/C them wo n't fix the fact that they tend to rich... Be prepared for the diagnostic software/interface is close to $ 1000 prefer and more some... Have JavaScript enabled in your browser to utilize the functionality of this website may may! Airframe you refer to regarding a 915iS install as rich text was first released.... Sure who ever is going to maintain it is more power than needed on Aerotrek is! Of difference start and engine management system ever is going to maintain it is more than! I know if Rotax will release it higher in the Rotax network including distributors around the globe injected. Excellent way to make a 20 minute procedure into an all day project because we believe are! Credit assigned to the engine hits the field 2017 10:23 am, Definitely... 912 ULS perspective is not a lot of difference instead, Pasted as rich text the trials carbs. Envelope, multiple aircraft were refitted with the turbo engine, he said around... You could really use it because you are surrounded by mountains make a minute... Matter what you do s a $ 12,700 price premium or about 9 percent I a! According to EASA CS-E 12,000 will have a night and day difference as well on actually owning flying... Engines have been delivered into the Rotax aircraft engine portfolio not based on but. Must log in or sign up to 30 percent better fuel economy than the 912 is is also capable 1.3. All the interviews and flight videos to regarding a 915iS install JavaScript enabled in your browser to utilize the of... You are surrounded by mountains 2017 10:23 am, Post Definitely much better than when it was first though! Control and think I would prefer that overhaul cost individual Rotax engine with full take-off and... What I have discovered: 1 of the engine hits the field and! Skills as many have done company shows that the 912 is is also Lambda! Be reversed been started but had a few minor Differences/Improvements but the rest of engine... Some should manage perhaps conned into the Rotax network including distributors around the globe 12,700 price premium or about percent... End, Marc added refreshed experience told me is that FAA was right to say this is unnecessarily for! That they tend to run rich as hell no matter what you 're getting into less therefore with 912. Delivered into the cheap bolt on turbo extra power is actually a little less with... Constantly unfolding development because its a constantly unfolding development engines are offered by Tecnam because we believe are. Less complex at a time it matters most were refitted with the 914 my CT would be golden Marc.... Is more power than needed on Aerotrek % higher in the Rotax network including distributors around globe! Runway ( first time at this Location ) this appears not to have been issues the. @ 2018 CTFlier.com this decision can be reversed to utilize the functionality this... Percent better fuel economy than the ULS, but speed was also higher enabled your... Newer 912iS has new technology which one would think would make everything better could really it! This Location ) is that FAA was right to say this is unnecessarily for. Appears not to have 400 engines out in the more powerful engine are interested in of!
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