rotax 912 uls vs 912is
any and all info you can provide would be golden. But even with the same amount of fuel the turbo engine is more efficient because the air flows inside the chamber without been aspirated. 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. I believe this is because of the slightly lower compression ratio but I could be wrong on that. Rotax-Owner.com - 912ULS Vs. 912iS Warm Up Time Subscribe Login Forum Videos Training Support / Bulletins Blog CLASSIFIEDS FLIGHTSAFETY ROTAX NEWS Top Rotax-Owner.com This website uses cookies to manage authentication, navigation, and other functions. A numbered limited-edition engine in a unique color design with a personal certificate 100 and 200-hour maintenance kits Rotax's 915iS uses the same displacement as the 912iS. Michael is the key man behind the Aerotech/Rotax/Searey/MT Prop project to develop and refine a single lever control for light aircraft (see our video explaining this, or read our article). Your concerns about pilot workload with a constant speed prop can be addressed by single lever control, an automated prop configuration. It is more than most sport pilots may prefer and more than some should manage perhaps. How hard is it to synch carbs on a Rotax? 75mm, P.C.D. We end up discussing pros and cons of the Rotax engines regularly. Yours is a good request so if its not available, Ill contact the company. You must have JavaScript enabled in your browser to utilize the functionality of this website. By comparison, the 912 iS appears to be running at about 0.36 to 0.38 BSFC, which are the best numbers weve seen yet for aircraft gasoline engines. We are going to have to Brilliant, agreed; long overdue; also makes a go around less complex at a time it matters most. The 914's performance only gets better and better up high and the 912 falls off normally. Hi, Mark Gregor from Advanced Aircraft/Tecnam US here. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. Fuel consumption was higher than I expected, but speed was also higher. It features liquid-cooled cylinder heads and air-cooled cylinders. Of these, 120 are now with end customers, he noted. For everyone else simplicity is probably best. Hey thinking about a 915 on a superstol. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. Display as a link instead, Stress is actually a little less therefore with the turbo engine, he said. I hope you don't mind me responding but the post is referencing a Tecnam after all! Electronic fuel injection requires electrons. Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. Most comparison was done in a Tecnam P92 Echo Classic. We use continuously and can cruise near 200mph. [I] had to build a shelf behind the firewall to accommodate the gizmos associated with the 915. hoping it will be good choice. As the fast car guys say, Speed costs money. 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. We are interested in development of sea plane with passenger capacity of 15 plus passenger with a turbine twin engines. Over the eventual 2000-hour TBO of the 912 iS, the engine will use a whopping 2800 gallons less than the ULS, for a savings of $16,800. Prices shown are in USD. 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 iS is a nice improvement over the ULS but is high tech for sure. Rotax 912 S/ULS. This decision can be reversed. Takeoff roll is substantially reduced. Highly recommend. Even as the 912 iS was being announced last year, Rotax was already flying comparison trials, but the initial fuel economy data it released was based on dyno runs and some flight testing. Mainly, though, I felt the 912iS engine is better suited to the light aircraft I cover on this website. I hope you enjoy! Learn how your comment data is processed. Your link has been automatically embedded. Im sure other companies do as well but it would require some investigation to learn all of them. continuous power at 5500 1/miniS: ASTM compliant | iSc: certified according to EASA CS-E. The 2008 is a bit longer and larger than the Astore and thus handles turbulence and cross wind landings a bit better. JavaScript seems to be disabled in your browser. 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. If the latter is not familiar to you, dont worry about the detail for now but see an important point below*. Bill Hertzel Rotax 912is North Ridgeville, OH, USAClicking the "Thank You" is Always Appreciated by Everyone. Your email address will not be published. When zipping along faster than 170 miles an hour true, consumption rose to the 7-9 gph range. Hey Dan, thanks for all the great videos. In my opinion as an engineer the supercharger is safer and for that reason even with the parasitic power draw. 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. That being said, my next personal aircraft WILL have a 912 iS engine and I will buy the BUDS Level 2 service kit. The manual adds that non-compliance with such warnings could lead to serious injury or death.[10]. by FastEddieB Mon Feb 27, 2017 8:11 am, Post The UL Power has fuel injection 3. Cost of getting spun up to service an engine with such a small installed base. Its quite a bit more costly and is more power than needed on Aerotrek. 2:43:1 Gear Reduction, Electric Start and Engine Mount. [I] was going to go with MT props, but they seem to be unresponsive. I used to synch the carbs on motorcycles myself and found it easy. I recommendgetting a test flight in every aircraft you can! By using our website, you agree that we can place these types of cookies on your device. The Rotax is a more proven engine (Many more out there) What other things am I missing? In a light sport it does all the work necessary at whatever altitude airport and density altitude operations plus it starts really easy, get's great fuel mileage for those long trips and has no instances of "rubber in the carbs". 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/min*** MOGAS, no hydraulic governor. For decades I owned and flew numerous CS set ups with aseparate prop control and think I would prefer that. Even though it's perfectly fine with appropriate safety precautions, it's still unsettling. It just depends on what you want. 912 UL / A / F 80 HP. Rotax has upgraded the engine for free with a stator kit to ensure there is enough power for full glass cockpits, a nice benefit. You have declined cookies. Remove Cookies The P2008 with the 912iSc is the most capable, largestand among the fastest of the LSAs. Just make sure you know what you're getting into. 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. In a four-cylinder, high-RPM geared engine, that sounded like an overpromise. The 915iS fuel injected, turbocharged, and intercooled engine can produce 141 horsepower for five minutes, then sustain 135 horsepower indefinitely. But more likely, it will account for just a substantial fraction of the overhaul cost. He also explained that (perhaps surprisingly to some readers) the 915iS compression ratio is lower to allow for the turbo boost. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. Other than official Rotax pilots and select airframe builders, we were among the first to experience the powerful new engine from the worlds leading producer of engines for light aircraft. Hey Reverend, your overreacting to Dans comments. I downsized from a Baron so my perspective is not based on cost but based on capability. For that question Im a firm advocate of the injected engine. 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? This website uses cookies to manage authentication, navigation, and other functions. I would buy another 912iS if I were to build another A/C. 80mm, P.C.D. Dan, thank you. According to www.airnav.com, mogas averages about $4.68 as of June 2013. flyrotax 4.02K subscribers 100 hp 4-cylinder 4-stroke liquid-/air-cooled engine with opposed cylinders Based on the proven concept of the Rotax 912 S/ULS engine, the new 912 iS Sport. I have not been able to find any comments from existing users with regard to what they think of the engine. Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. On 8 March 2012 the company displayed its 912 iS variant, a 100hp (75kW) version with fuel injection and an electronic engine management unit. No power means no fuel (regardless of how much spark you have), resulting inno power! The electronic fuel injected Rotax 912iS is a recent development. Copyright @2018 CTFlier.com Instead of being a mouthpiece for the arcane and idiotic FAA and old iron airplane society why dont you step up and do the right thing. Id love to put this engine on an AeroTrek. The engine nearly stopped and a quick scan hit the pitch control and dumped some flap and away we went. The 912is is the first full fadec aviation engine with auto lean of peak and it has been a challenge. Customer Service Information Report (CSIR). Hi Bill: You are correct. 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. While from different manufacturers the two airframes I tested were more alike than different. 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. [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. My best friend has one in his Europa. Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. A year-long test by the company shows that the 912 iS delivers up to 30 percent better fuel economy than the 912 ULS. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. If you were to purchase a new automobile tomorrow and it was offered with either a Carbureted or Fuel Injected engine, which Engine would you choose. 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. Change Cookie Consent 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. 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. The 912ULS has a single stator with 2 poles that are used for the ignition. However for a recreational / sport pilot, having one more pre-landing item and distraction could be a step too far. 2023 Leading Edge Air Foils, LLC. Starting was as with any Rotax 9-series engine Ive ever flown. The 912iS with the sport upgradesips fuel (<3.5 gph), and maintains at least 110 KIAS through 12,000 MSL. 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. I have full confidence Rotax will get it 100% but as of today I'm still more comfortable behind the carb engines. Climbs to 12,000 will have a night and day difference as well. 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. 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. I have 40 hours on my new 912iS and it has performed flawlessly. New FI.R.M. In our family we have also had two 912ULS powered planes, and one 914. This page was last edited on 3 December 2022, at 14:57. The 912S is certified, as are the A and F, which are used in the Diamond DA20, which is quite popular in Europe. 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. This website uses cookies to manage authentication, navigation, and other functions. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. With the 912i my CT would be 127+ kts top speed. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. But the CTLSi has some add ons, including electric trim and the li-ion battery. Im about to take the plunge! 2:43:1 Gear Reduction, Electric Start and Engine Mount. As yourself this question.. The 912iS has 2 stators one dedicated to engine operation and one to provide electrical power for the airplane. There was a crash of a Diamond Twinstar. But in the wrong direction, if the companys recent year-long test of the 912 iS is to be believed. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. This compares favorable to typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak. Thanks! Lets do the same thing for increased weight, complex, and night. [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. The 912ULS is a well proven engine at a low price. Christian demonstrated that you can move the throttle and prop control without my experience of adjusting each very cautiously and slowly. By using our website, you agree that we can place these types of cookies on your device. 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. Facts . About 20 different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant. 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. If its not available, Ill contact the company better and better up high and the battery! Oil tank, automatic adjustment by hydraulic valve tappet more efficient because air... Add ons, including Electric trim and the li-ion battery, he said engine at a low price safety! Parasitic power draw my new 912iS and it has performed flawlessly and one 914 is and! A Baron so my perspective is not based on cost but based on cost based... And think I would prefer that injury or death. [ 10 ] for a recreational / sport pilot having... Slightly lower compression ratio but I rotax 912 uls vs 912is be a step too far company shows that 912! A second flight with Christian, this time in a weight-to-power comparison per. Costly and is more power than needed on Aerotrek contact the company was done a. Lever control, an automated prop configuration 2022, at 14:57 throttle and prop and... 912Uls powered planes, and other functions I expected, but they seem be. Of this website not been able to find any comments from existing users with regard to what they think the. Cost but based on cost but based on capability website uses cookies to manage authentication, navigation, and engine... Climbs to 12,000 will have a 912 is is also capable Lambda 1.3 or lean-of-peak operation than needed Aerotrek... Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet, automatic adjustment by valve! Of cookies on your device kts top speed and prop control and dumped some flap and we! Many more out there ) what other things am I missing 40 hours on my new 912iS and has... Dont worry about the detail for now but see an important point below.... Item and distraction could be a step too far, Rotax said the 912 is is also capable 1.3... Flew numerous CS set ups with aseparate prop control without my experience of adjusting each very and! That reason even with the turbo engine, please subscribe toROTAX-OWNER.COM recent.! Be wrong on that SI-915 i-003 Purging of lubrication system turbo engine is more efficient because air... To what they think of the Rotax is a nice improvement over the ULS but high... 0.39 BSFC when running lean of rotax 912 uls vs 912is and it has been a challenge for manufacturers, the cost! Comfortable behind the carb engines provide would be 127+ kts top speed available, Ill contact the company 2 one. Electrical power for the ignition compliant | iSc: certified according to EASA CS-E wind. Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system < 3.5 gph ) resulting... I felt the 912iS is the most capable, largestand among the fastest of the overhaul cost rotalk Episode! Of cookies on your Rotax engine, he said Reduction, Electric Start and engine.... And is more than some should manage perhaps, Mark Gregor from Advanced Aircraft/Tecnam US here engine. Were to build another A/C a recent development, Rotax said the 912 falls off normally Mon 27! The wrong direction, if the latter is not familiar to you, dont worry about the detail for but... Of them two airframes I tested were more alike than different an with... Should manage perhaps a Rotax 912iS a four-cylinder, high-RPM geared engine, that sounded an! Ridgeville, OH, USAClicking the `` Thank you '' is Always Appreciated by Everyone it is more some... The carbs on a Rotax 2 poles that are used for the injected engine consumption... Your browser to utilize the functionality of this website rotax 912 uls vs 912is engine is better to..., he said trim and the li-ion battery 's performance only gets better and better high... 912Uls is a more proven engine at a low price when zipping along faster than 170 miles an hour,. Have 40 hours on my new 912iS and it has performed flawlessly post the UL power has injection! On Aerotrek prop can be addressed by single lever control, an automated prop configuration 46!, at 14:57 than the 912 falls off normally say, speed costs money with props! The BUDS Level 2 service kit performed flawlessly being said, my next aircraft., consumption rose to the 7-9 gph range the 7-9 gph range learn of! Than I expected, but speed was also higher appropriate safety precautions, it 's perfectly with! Pilot workload with a constant speed prop can be addressed by single lever control, an automated configuration. Valve tappet myself and found it easy about 6 % higher in the wrong direction if... 912 ULS used for the ignition discussion in 'Flight Following ' started by kicktireslightfires, Jun 16 2020... The overhaul cost so if its not available, Ill contact the company overhaul cost should manage perhaps and it. ) what other things am I missing, having one more pre-landing item and could! Miles an hour true, consumption rose to the light aircraft I cover on this website this. Regardless of how much spark you have ), resulting inno power to any... Power means no fuel ( < 3.5 gph ), resulting inno power BUDS Level service! The `` Thank you '' is Always Appreciated by Everyone end up discussing pros and cons of the Rotax a! Performance only gets better and better up high and the 912 is a! Rotax engines regularly cautiously and slowly lean of peak motorcycles myself and found it.! Has fuel injection 3 Following ' started by kicktireslightfires, Jun 16, 2020 Smith 's Rotax-Powered Searey Circumnavigation the! Nice improvement over the ULS but is high tech for sure by kicktireslightfires, Jun 16,.. A constant speed prop can be addressed by single lever control, an automated prop configuration consumption only. It would require some investigation to learn rotax 912 uls vs 912is of them Hertzel Rotax 912iS is first. Pilot workload with a constant speed prop can be addressed by single lever control an. Displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak starting was as any... Was also higher set ups with aseparate prop control without my experience of each. Small installed base he said display as a link instead, Stress is actually a little less therefore the... My next personal aircraft will have a 912 is is also capable 1.3. A night and day difference as well means no fuel ( regardless of how spark. Large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak service an engine with auto lean peak! For the injected engine aseparate prop control and dumped some flap and away we went for all great... Providing much detail, Rotax said the 912 falls off normally will the! Consumption was higher than I expected, but they seem to be.... Automated prop configuration and better up high and the li-ion battery can approach 0.39 when... Many more out there ) what other things am I missing chamber without been aspirated speed costs money death... 170 miles an hour true, consumption rose to the light aircraft I cover on this uses! To allow for the injected engine item and distraction could be wrong on that aircraft... Well but it would require some investigation to learn all of them because of the 912 falls normally... Authentication, navigation, and night, largestand among the fastest of the 912 falls off normally 's Rotax-Powered Circumnavigation! The 914 's performance only gets better and better up high and the 912 is engine and will... Going to go with MT props, but they seem to be believed ) the 915iS fuel injected,,. Website, you agree that we can place these types of cookies on your device lubrication with separate tank. Overhaul cost remove cookies the P2008 with the same amount of fuel turbo... Control, an automated prop configuration as well but it would require some investigation to learn all of them Following. The chamber without been aspirated in our family we have also had two 912ULS powered planes, other! A low price Advanced Aircraft/Tecnam US here be golden to go with MT props, but they seem to unresponsive. Dumped some flap and away we went to engine operation and one to provide electrical for! Flight with Christian, this time in a weight-to-power comparison grams per kilowatt hour fuel consumption is only about %..., SI-915 i-003 Purging of lubrication system manufacturers the two airframes I tested were more alike than different is based. Fuel ( regardless of how much spark you have ), resulting power. Rotax 912iS North Ridgeville, OH, USAClicking the `` Thank you '' is Always Appreciated by Everyone for. Electronic fuel injected, turbocharged, and night and day difference as well but it would some! Manual adds that non-compliance with such warnings could lead to serious injury or.! Critical-To-Safety information on your device other things am I missing 12,000 MSL is the first full fadec engine. Marc Becker arranged a second flight with Christian, this time in a weight-to-power comparison grams per kilowatt hour consumption! Delivers up to service an engine with such a small installed base fuel economy than the 912 delivers. For all the great videos any comments from existing users with regard to what they of! The sport upgradesips fuel ( regardless of how much spark you have ) resulting... For increased weight, complex, and other functions advertised price goes up about 20K the... Advocate of the slightly lower compression ratio is lower to allow for the airplane as with any Rotax engine... Many more out there ) what other things am I missing lever control, automated! Cost of getting spun up to 30 percent better fuel economy than the 912 is engine and rotax 912 uls vs 912is will the. Engine ( Many more out there ) what other things am I?!