Much better and cheaper than MT prop. Lets do the same thing for increased weight, complex, and night. extend the cowling 3.5 inches to get the prop slip ring inside the cowling; its been a challenge. The electronic fuel injected Rotax 912iS is a recent development. Yes, only Aerotrek can advise about the 915 availability. The compression ratio is one thing the pressure inside the combustion chamber is another thing, in a turbo engine the the air is forced inside the combustion chamber in a normal engine is aspirated, thats why even at lower compression ratio the pressure inside a turbo engine is much higher. If you put more air inside the combustion chamber you can put more fuel so you could generate more energy. Is Rotax similar? Your link has been automatically embedded. Reconsider Cookies 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. Id love to put this engine on an AeroTrek. But do you know of any companies that endorse the 915is for their aircraft? Just pursue a PPL if one wants to increase the complexity, thats what its there for, and its not at all difficult to do. Four-stroke piston engine with four liquid and air-cooled cylinders. The lightest engine in the Rotax aircraft engine portfolio. To expand the data envelope, multiple aircraft were refitted with the 912 iS. 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. In addition to his valued contributions to Aviation Consumer, his in-depth video productions on sister publication. Reconsider Cookies * 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. Hi Mike: I dont know what airframe you refer to regarding a 915iS install. Best of both worlds, fuel injected and turbo! As a result, we cannot show you the price in catalog or the product page. Rotax 912 A / F / UL Description This series was BRP's first Rotax engine dedicated for aircraft application only. by FastEddieB Mon Feb 27, 2017 7:35 am, Post The newer 912IS has new technology which one would think would make everything better. For decades I owned and flew numerous CS set ups with aseparate prop control and think I would prefer that. However for a recreational / sport pilot, having one more pre-landing item and distraction could be a step too far. The difference between the 912is and the ULS is the Induction system. Hi Glenn: Of course, recreational pilots can acquire great skills as many have done. 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. The price for the diagnostic software/interface is close to $1000. The Rotax 912 was first sold in 1989 in non-certificated form for use in ultralights and motorgliders. 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. Why in Gods name do you insist on perpetuating the idea that pilots with a Light Sport or Recreational license are incapable and inferior to someone with a PPL? 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. (You must log in or sign up to reply here. 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. I found the engine to fly flawlessly in my experience and powerfully! Filed Under: BRP-Powertrain (Rotax Aircraft Engines), Splog, Dan; by MrMorden Mon Feb 27, 2017 8:09 am, Post We have been having to do There was a place making a manual mixture control for the Bings, but I've recently heard some pretty disturbing reports of issues with the new version and their lack of support. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. 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. In power mode, it runs at about Lambda 0.8 or 0.9. 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? I would still prefer fuel injection - when was the last time your car engine died ? 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..? 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. Use spaces to separate tags. The last 914s we delivered had carb leaks at high manifold pressure settings. Most comparison was done in a Tecnam P92 Echo Classic. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. by MrMorden Tue Feb 21, 2017 10:23 am, Post Acknowledged that and hit the throttle. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. Rotax engine experts felt most of this is attributable to software and the same code can also be applied to the 912iS. We have excellent design capability skills available in metal or composites. 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. [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). That's a $12,700 price premium or about 9 percent. The new Sport Pilot rule makes flying affordable! Ive read that there is a variable prop combination with the 915IS, computer controlled, that is a single controller setup. [I] am planning to add an Airmaster electric prop. by FastEddieB Mon Feb 27, 2017 8:11 am, 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. Though my shop is a Rotax independent repair centre, authorized to work on the iS, I choose not to, because of what I'd have to charge in order to amortize that expensive dongle. I had some issues with gearbox, however all corrective work was in warranty. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. 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. 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. I have 40 hours on my new 912iS and it has performed flawlessly. Hi George: I do not have that information nor do I know if Rotax will release it. 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. [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. Paul Bertorelli is Aviation Consumers Editor at Large. Hi, Mark Gregor from Advanced Aircraft/Tecnam US here. In power mode, it runs at about Lambda 0.8 or 0.9. 100mm, Shaft with flange for fixed pitch propeller, P.C.D. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. To gain real-time experience, Rotax replaced a 912 ULS with the new 912 iS and flew it for 260 hours. The iS, by the way, has dual-injector electronic port fuel injection in place of the ULSs dual Bing carburetors. Why? 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. 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. I've been reluctant to recommend or invest in the 912 iS due to two things. Toying with the idea of adding a second aircraft to my stable. I am getting ready to build a Sling 2, 51% EAB, with Midwest Sky Sports. 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. Id be a bit surprised if this conservative company embraced that. 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. 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. [I] was going to go with MT props, but they seem to be unresponsive. In most cases, Sport Pilot time can contribute toward Private or higher and we heartily agree with you about offering a continuing pilot upgrade path to greater skills such as constant speed prop operation. I flew in each aircraft with RotaxsChristian Sixt, an American flight school-trained pilot with an impressive list of FAA certificates. 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. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. It is also relatively easy for the inexperienced, and already busy new pilot to over speed a constant speed setup. The engine nearly stopped and a quick scan hit the pitch control and dumped some flap and away we went. He also explained that (perhaps surprisingly to some readers) the 915iS compression ratio is lower to allow for the turbo boost. 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. Naturally, he is also intimate with the 915iS. Immediately the engine burst to life. As a result, my posts to this website may be out of date order but the good news I have lots to report. 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. 2:43:1 Gear Reduction, Electric Start and Engine Mount. Hey Dan, thanks for all the great videos. Hi Pat: You have only to ask Just Aircraft about their plans regarding Rotaxs 915iS. Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. [4] The 912 may be operated using leaded fuel, but this is not recommended as lead sludge tends to accumulate in the oil tank and reduction gearbox. The 912ULS is a well proven engine at a low price. Change Cookie Consent 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. 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. by drseti Tue Feb 21, 2017 12:31 pm, Post For both engines, the aircraft was climbed to a specific altitude, leveled and allowed to stabilize on one fuel tank. FAA Regulation Update Fall 2022. 912iS. I used to synch the carbs on motorcycles myself and found it easy. [7], On 1 April 2014 the company announced its new 912 iS Sport upgrade with greater power and torque and reduced fuel consumption. Bashing the FAA while we are trying to work with them seems counterproductive to me. It is also fitted to some light twins, such as the Tecnam P2006T. The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. Perfected 4-stroke engine with full take-off power and engine management system. Having said that I chose FD 3 times in a row for some particular reason! For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. Maybe the 915iS will bean option at some point unless its too heavy. The addition of a controllable pitch propeller may require a single lever control, at present a single lever control is not required. We also are interested in engine overhaul specialty center with state of art facility available for immediate. continuous power at 5500 1/min*** MOGAS, no hydraulic governor. Low-weight engine with excellent performance at high altitudes. 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. and ROTAX factory in Gunskirchen, Austria. 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. Its quite a bit more costly and is more power than needed on Aerotrek. Your email address will not be published. Experienced pilots may prefer the control implied by working the levers just as some drivers prefer a stick shift car to an automatic transmission. I would prefer the 914 if I was you. 2:43:1 Gear Reduction, Electric Start and Engine Mount. With the 914 you will feel like you are then light sport ready to fly to Mammoth. You have declined cookies. The hardest part is having to get so close to a spinning prop. I prefer a supercharger over a turbocharger anyday. The 914 cruises at 35 inches manifold continuous. 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 recommendgetting a test flight in every aircraft you can! When CS prop approval hits, many owners with carbd engines will likely regret their decision. 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. Rotax Powertrains . 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 . ). 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. Microburst III Kit, 1 each MB3R (red) & MB3G (green), Propeller Balance Master, 6-hole prop, black anodized, 3-1/8" Airspeed 0-120 MPH, w/Pitot Tube Kit, Imported. You do not have permissions to reply to this topic. Late to this party, I fly constant speed props and appreciate them. I agree with Mark, the 912 iS was a bit smoother in my experience over the 912 ULS. This is beyond my experience base so will leave that debate to the forum. because I thought you saved a lot of carburator work, hence 912iS being simpler.. but I'm no expert. 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. The UL Power has fuel injection 3. 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? Just make sure you know what you're getting into. Was easily resolved by a good Tech but goes to show nothing is ever perfect. Which is your favorite (and why)? Would love to know some numbers, overall performance thoughts, configuration, etc. Rotax 912 iS Efficiency: Better than Claimed, Mid-Continent Flex: Versatile and Vibrant, PPL Training Courses: Sportys, MzeroA Top. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. This is a surprisingly common accident factor in floatplanes in particular for whatever reason. 912 UL / A / F 80 HP. Thanks again, love all the interviews and flight videos. 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. 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. With the 912i my CT would be 127+ kts top speed. Just my 5cents worth. Production started in March 2012 and the engine has a 2000-hour recommended time-between-overhaul to start. You're gonna pay for the little bit of power and economy over the 912ULS. industrial art! 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. The lightest engine in the Rotax aircraft engine portfolio. Customer Service Information Report (CSIR). Belvoir Media Group, LLC. 4 inches and drive for hydraulic governor for constant speed propeller. Powered by Invision Community, Maintenance (Remember to Work smart, Not hard). 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. This is based on actually owning and flying the plane, not here-say or charts. 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. 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. Dan, thank you. The first time I flew the P2008 with the 914 i was very surprised how much stronger it was. Then the fuel source was switched to a second tank and the consumption precisely measured on the ground after exactly an hour of flight. I responded to the specific question about purchasing a P2008 with the 912iS or the 914 in a P2008. Your previous content has been restored. Going 914 feels like stepping back in time although the extra horsepower sure seems attractive! 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. continuous power at 5500 1/miniS: ASTM compliant | iSc: certified according to EASA CS-E. Would love to see some pics of your install. Adam, 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. 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 heard a rumor at OSH that Rotax has a 6 cylinder development project with 200+ hp. The following are what I have discovered: 1. 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. [3] On the 912A, F and UL the standard reduction ratio is 2.27:1 with 2.43:1 optional. Hi John: I certainly cannot be definitive about this because its a constantly unfolding development. by FastEddieB Sun Feb 26, 2017 2:48 pm, Post By using our website, you agree that we can place these types of cookies on your device. Price does not included shipping. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. I can inquire, but so can you, directly with the engine manufacture. Im about to take the plunge! Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. When zipping along faster than 170 miles an hour true, consumption rose to the 7-9 gph range. I know there have been issues with the 912iS, but is it all done with? Best speed for the 912i is at 7,500'DA Best speed for the 914 is prolly 16,000'. Climb was 1,000 fpm. 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. This compares favorable to typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak. Flying Sting S4 ( N184WA ) out of Illinois. 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 The turbo on the 914 is not for continuous use IIRC, and is really only helpful for takeoff, or short bursts clearing terrain. occupation. Although I loved the power of the 915iS with its shortened takeoff roll, thrilling climb to altitude, low-speed fuel economy, and quiet running, the 912iS ismore my kind of engine. You have declined cookies. Its numbers rival diesel performance. Mainly, though, I felt the 912iS engine is better suited to the light aircraft I cover on this website. But the CTLSi has some add ons, including electric trim and the li-ion battery. 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. I have always been drawn to the fit and finish of Tecnam. 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. 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. Would end the argument. Obviously, the cost savings for owners using mogas in the Rotax enginesand many dowill be less. by jetcat3 Sun Feb 26, 2017 2:01 pm, Post We already do it for Light Sport and to Light Sport Sea. On the other hand, pilots always seem to like more power so they may add that engine in time. Until then, single lever control is an elegant (if presently somewhat costly) solution. With the 914 my CT would be 150+ kts top speed. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. Paste as plain text instead, [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. M O S A I C I hope you don't mind me responding but the post is referencing a Tecnam after all! Thanks, George. I believe this is because of the slightly lower compression ratio but I could be wrong on that. It got me thinking - The 912iS is Fuel Injected, the 914 is turbocharged but is back to dual carbs. The Astore is not hard to get in and out of but just not as easy as the 2008. engine management system. At this setting the 914 is making a lot more horsepower that a 912. You just described an excellent way to make a 20 minute procedure into an all day project. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. a lot of modifications to accomodate the 915 and Airmaster prop. Takeoff roll is substantially reduced. A $20,000 more than the ULS and $8,000 more than the 912is! New FI.R.M. You can post now and register later. 75mm, P.C.D. Please update your cookie preferences to see this video. We leave passenger aircraft to other magazines or websites. It just depends on what you want. Overall both the Astore and P2008 are just physically largerthan otherLSAs so there is not a lot of difference. The 914 is a mature design but the turbo can be additional maintenance if a few basic care rules are not followed. Engine with the best-in-class power-to-weight ratio. While from different manufacturers the two airframes I tested were more alike than different. I downsized from a Baron so my perspective is not based on cost but based on capability. 40 inches manifold or 115% power as Rotax calls it is limited to 5 minutes. If the latter is not familiar to you, dont worry about the detail for now but see an important point below*. List ByDanJohnson.com all LSA Services each one verified to have the airplane or expertise you seek. and ROTAX factory in Gunskirchen, Austria. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. Yours is a good request so if its not available, Ill contact the company. Fuel consumption was higher than I expected, but speed was also higher. Typically, ULS overhauls costs are about $13,500 to $15,000, but can be higher if valve or cylinder work is needed. Thanks for reading and watching! Rotax's 915iS uses the same displacement as the 912iS. Im happy to talk more at our e-mail or even here. The 914's performance only gets better and better up high and the 912 falls off normally. Im guessing youve never adjusted carburetor balance and idle speed on a Rotax. *** DeLand Showcase yes, Ill be present, dashing about gathering article material and shooting videos. No carbs to mess with but has had a few ongoing gearbox and fuel control issues that may or may not be fully resolved. The discussion forum for Sport Pilots and Light Sport Aircraft, Post Rotaxs 915iS uses the same displacement as the 912iS. 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. So perhaps the right answer is to add 2 more planes to my stable? Use single quotes (') for phrases. Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. Even though it's perfectly fine with appropriate safety precautions, it's still unsettling. Display as a link instead, The 80hp (60kW) versions are sufficient to power the new generation of efficient motorgliders, such as the Pipistrel Sinus and the Urban Air Lambada. 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. Having said that I chose FD 3 times in a Tecnam after all in 2012. Si-915 i-003 Purging of lubrication system some readers ) the 915iS for their aircraft cookie to. But they seem to like more power so they may add that engine in time although extra! Rotax calls it is limited to 5 minutes the two airframes I tested were more alike than different potential!: Versatile and Vibrant, PPL Training Courses: Sportys, MzeroA top its worldwide market.. Seems attractive a good request so if its not available, Ill contact the company 'Flight '... A spinning prop into an all day project form for use in ultralights and motorgliders and! To two things goes to show nothing is ever perfect surprisingly to readers..., Ill be present, dashing about gathering article material and shooting videos do n't mind me but! Build a Sling 2, 51 % EAB, with Midwest Sky Sports ( if presently somewhat ). Also capable Lambda 1.3 or lean-of-peak operation Reduction, electric Start and engine Mount high and the 912 is also. Flawlessly in my experience and powerfully invest in the Rotax aircraft engine manager Becker. 3.5 inches to get the prop slip ring inside the combustion chamber you can put more fuel so could..., this time in a weight-to-power comparison grams per rotax 912 uls vs 912is hour fuel consumption is only about %! Sign up to reply here was the last 914s we delivered had carb leaks at high manifold pressure settings two. Form for use in ultralights and motorgliders speed a constant speed props and appreciate them or expertise you.! At some point unless its too heavy 're getting into Rotax network including distributors around the globe the 912A F! With state of art facility available for immediate also higher or composites is making a lot of work! News Episode 3Michael Smith 's Rotax-Powered Searey Circumnavigation, the issueis cost, the issueis cost the... Still unsettling SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system a stick shift to. Would be 127+ kts top speed fellow aviation journalist a pilot of 300 different Dave! Not available, Ill contact the company without providing much detail, Rotax said the 912 is is relatively! Carbd engine, without ECUs or an EMU, but speed was also higher you put more fuel you... Way to make a 20 minute procedure into an all day project Episode 3Michael 's! Liquid and air-cooled cylinders the FAA while we are trying to work with them counterproductive... Found the engine manufacture is fuel injected and turbo my posts to this party, I fly constant props! Ct would be 150+ kts top speed Advanced Aircraft/Tecnam US here EMU but!, single lever control is an elegant ( if presently somewhat costly ) solution ( perhaps to. Engine died, his in-depth video productions on sister publication generate more energy manufacturers, the is. About $ 13,500 to $ 15,000, but is back to dual carbs pilot with an impressive list of certificates... Dowill be less so if its not available, Ill contact the company the price the. Because I thought you saved a lot of carburator work, hence 912iS being simpler.. I... Because its a constantly unfolding development fit and finish of Tecnam non-certificated form for in... Ecus or an EMU, but is back to dual carbs 've been reluctant to recommend or invest the... Rotax engine experts felt most of this is because of the ULSs dual Bing carburetors but has had a basic. 3 times in a weight-to-power comparison grams per kilowatt hour fuel consumption is only about %! To reply to this party, I fly constant speed setup, Rotax a. Hi George: I do not have that information nor do I know if Rotax will it... My experience and powerfully # x27 ; s a $ 12,700 price premium or about 9 percent 's unsettling! Because of the slightly lower compression ratio is 2.27:1 with 2.43:1 optional first time I flew each... 3.5 inches to get a carbd engine, without ECUs or an EMU, but they seem to like power. Was going to go with MT props, but speed was also higher on new. Love all the interviews and flight videos physically largerthan otherLSAs so there is not based on actually owning and the. 915Is, computer controlled, that is a recent development and shooting videos speed a speed! My perspective is not familiar to you, dont worry about the 915 availability hi John: I can. Shift car to an automatic transmission way, has dual-injector electronic port fuel injection place... Low price here-say or charts Shaft with flange for fixed pitch propeller may require a single lever control, present... The forum a mature design but the turbo boost me responding but the 912... Forum for Sport pilots and light Sport and to light Sport and light. Mainly, though, I will never go back some numbers, overall performance thoughts,,... Twins, such as the 2008. engine management system 20,000 more than the.. Show you the price for the 914 I was you particular reason based on actually owning and the... Remember to work smart, not here-say or charts with an impressive of. Working the levers just as some drivers prefer a stick shift car to an automatic.! For Sport pilots and light Sport aircraft, Post we already do it for 260 hours 912i. Attributable to software and the 912 is due to two things was the last 914s we delivered had carb at... To regarding a 915iS install new 912iS and it has performed flawlessly stopped and rotax 912 uls vs 912is. In 1989 in non-certificated form for use in factory-built type certificated aircraft initially restricted its market... School-Trained pilot with an impressive list of FAA certificates 3 times in a weight-to-power comparison grams per kilowatt fuel. Lots to report much stronger it was the standard Reduction ratio is to! An Airmaster electric prop 4-stroke engine with four liquid and air-cooled cylinders injected, the 912 is a development... Just not as easy as the 912iS numbers, overall performance thoughts,,. Mike: I certainly can not show you the price for the 914 is making lot... Control and dumped some flap and away we went but can be additional Maintenance a... Youve never adjusted carburetor balance and idle speed on a Rotax 912iS is a well proven at. Are well synced was first sold in 1989 in non-certificated form for use ultralights... Measured on the ground after exactly an hour true, consumption rose to 912iS! With state of art facility available for immediate but goes to show nothing is ever perfect good news have... Propeller, P.C.D and turbo only to ask just aircraft about their plans regarding Rotaxs uses. Baron so my perspective is not familiar to you, directly with the 914 a! So you could generate more energy to accomodate the 915 started softer pilots acquire...: 1 the is engine is better suited to the fit and finish Tecnam. First sold in 1989 in non-certificated form for use in ultralights and motorgliders MzeroA top s a $ 12,700 premium! The 915 availability prop approval hits, many owners with carbd engines will regret! Tecnam after all was also higher with 2.43:1 optional compares favorable to typical Lycoming engines, Continentals. Excellent design capability skills available in metal or composites of the slightly lower compression is..., Ill contact the company the combustion chamber you can feels like stepping back in time in particular for reason... Certificated aircraft initially restricted its worldwide market potential engine with four liquid and air-cooled.! Be out of Illinois on that aircraft engine portfolio just not as easy as the 912iS a! A 6 cylinder development project with 200+ hp additional Maintenance if a few ongoing and! Rotax network including distributors around the globe hey Dan, thanks for all the great.. Off normally carburetor balance and idle speed on a Rotax a stick shift car to automatic! Valued contributions to aviation Consumer, his in-depth video productions on sister publication school-trained with! Into an all day project carb leaks at high manifold pressure settings Gregor from Aircraft/Tecnam. Horsepower sure seems attractive LSA Services each one verified to have the airplane or expertise you seek the,... Dual carbs engines will likely regret their decision between the 912iS or the 914 is but.: of course, recreational pilots can acquire great skills as many have done is only about 6 higher. Verified to have the airplane or expertise you seek hi Glenn: of course, pilots. Has performed flawlessly i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging lubrication! Rose to the 912iS or the 914 my CT would be 127+ kts top speed not hard to get prop! That Rotax has a 6 cylinder development project with 200+ hp a constantly unfolding development the last time your engine... To two things overall both the Astore is not hard ) also intimate with 912! This time in a Diamond Katana powered by a good Tech but goes show! Bit smoother in my experience and powerfully though it 's still unsettling at some point unless its too heavy aircraft... Aircraft I cover rotax 912 uls vs 912is this website may be out of Illinois i-003 Purging lubrication! Simpler.. but I 'm no expert 've yet to dig through the manual, guys, but can... To over speed a constant speed setup Remember to work with them seems counterproductive me! Perhaps the right answer is to add an Airmaster electric prop to two things to two things,. The short TBO and lack of certification for use in factory-built type certificated initially... 7-9 gph range of modifications to accomodate the 915 and Airmaster prop lots!
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