Fuel needs of both 915iS and 912iS are essentially the same. 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. This compares favorable to typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak. Plan on attending the Annual Sport Pilot Expo. But do you know of any companies that endorse the 915is for their aircraft? If you put more air inside the combustion chamber you can put more fuel so you could generate more energy. Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. We live in the KMNE/KDTO area and seek advice. The 912ULS has a single stator with 2 poles that are used for the ignition. Maybe the 915iS will bean option at some point unless its too heavy. It does come with a few costs, as did the 912iS fuel injected engine compared to the 912ULS carbureted engine. You have allowed cookies to be placed on your computer. 100mm, Shaft with flange for fixed pitch propeller, P.C.D. Do you have an update? So I'm about to buy a pipistrel virus SW and was wondering if the 912iS is a better option over the 912ULS in the general community's opinion. 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. However, syncing them won't fix the fact that they tend to run rich as hell no matter what you do. Using an Airmaster prop from New Zealand, Also, avgas is incompatible with the recommended synthetic oil which cannot hold lead in suspension; consequently, the use of leaded fuel mandates additional maintenance.[3]. 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. You can post now and register later. On 8 March 2012 the company displayed its 912 iS variant, a 100hp (75kW) version with fuel injection and an electronic engine management unit. The short TBO and lack of certification for use in factory-built type certificated aircraft initially restricted its worldwide market potential. On the other hand, pilots always seem to like more power so they may add that engine in time. Naturally, he is also intimate with the 915iS. kicktireslightfires, Jun 16, 2020 #1 Ghery Touchdown! Flying the new 915iS in an Aquila light aircraft. The addition of a controllable pitch propeller may require a single lever control, at present a single lever control is not required. by MrMorden Tue Feb 21, 2017 10:21 am, Post Reconsider Cookies ROTAX 912IS AVAILABLE FOR SALE Rotax 912IS for sale motor was purchased for an aircraft kit project but was never finished motor was installed and ran but as never flown. [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. Its quite a bit more costly and is more power than needed on Aerotrek. You do not have permissions to reply to this topic. The Rotax is $2092 cheaper 2. I think LSA/SLSA is the way I want to go and am trying to figure it out. The discussion forum for Sport Pilots and Light Sport Aircraft, Post The iS has more components, including the fuel injection system, ECUs and dual, high-pressure fuel pumps. A turbocharged variant rated at 115hp (86kW), the Rotax 914, was introduced in 1996. 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. by MrMorden Tue Feb 21, 2017 10:23 am, Post It just depends on what you want. 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? 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. Plugging that number into Rotaxs data reveals a to-TBO cost savings of about $13,000not quite the total overhaul nut, but no trivial sum, either. Experienced pilots may prefer the control implied by working the levers just as some drivers prefer a stick shift car to an automatic transmission. If you have an account, sign in now to post with your account. Sign up for exclusive offers and product announcements from ROTAX. I would prefer the 914 if I was you. Greaser! This engine makes 141 hp for five minutes for takeoff and 135 hp continuously, and it does so up to 15,000 feet. In addition, Mitter collected broader data that showed that the 912 iS is slightly more efficient in climb than is the ULS. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. Cost of getting spun up to service an engine with such a small installed base. My best friend has one in his Europa. 75mm, P.C.D. This decision can be reversed. superstol2019@miketiffee.com. 2:43:1 Gear Reduction, Electric Start and Engine Mount. To gain real-time experience, Rotax replaced a 912 ULS with the new 912 iS and flew it for 260 hours. Highly recommend. 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. 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. by Warmi Mon Feb 20, 2017 6:15 pm, Post 912S/ULS vs 912IS by John Redman in General Tech Discussion 6 years ago Beginning the build on my S-20 and I am torn between these two engines. Thanks. What matters is the total pressure on the piston, not if it comes from turbo or mechanical compression. M O S A I C 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. April has been busy starting with a week of Sun n Fun; then a gathering of LSA seaplanes at my home airport the day after; followed by three days of Aero Friedrichshafenin Germany(it runs four days but I had to miss the first);concluding with a journalists-only event at Rotax Aircraft Engines. The 912ULS is a well proven engine at a low price. The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. 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. Learn how your comment data is processed. Hey thinking about a 915 on a superstol. I have constant speed prop time, a fair bit of it, but that was some years in my past. Hi Drew: Thanks for your kind words. The hardest part is having to get so close to a spinning prop. At altitudes needed for California cruising there's a 20kt difference. 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. 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. Surprisingly though, I'd say the 914 UL is the smoothest out of the all of them. industrial art! We also are interested in engine overhaul specialty center with state of art facility available for immediate. 912 UL / A / F 80 HP. On introduction, the TBO was only 600 hours, which was double that of previous Rotax engines but far short of existing engines of comparable size and power. Dan, thank you. Climb was 1,000 fpm. Hopefully, the time spent trying to express my opinion of the trade space for the original question helped. Why? Would love to see some pics of your install. 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 requires a novel preflight inspection procedure: before checking the oil level with the dipstick, the engine is "burped" by removing the oil filler cap and turning the propeller until a gurgling sound is heard, which indicates that all oil has been forced into the tank and the oil level can now be checked accurately. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. Boththe P2008 and the Astoreare great planesjust like the Flight Design and because I like one better doesn't meanothers will. Hi George: I do not have that information nor do I know if Rotax will release it. It's not terribly difficult or time consuming. by FastEddieB Mon Feb 27, 2017 8:11 am, Post The 912S is certified, as are the A and F, which are used in the Diamond DA20, which is quite popular in Europe. I hope you don't mind me responding but the post is referencing a Tecnam after all! I prefer a supercharger over a turbocharger anyday. The last 914s we delivered had carb leaks at high manifold pressure settings. Im happy to talk more at our e-mail or even here. You can have separate throttle and mixture controls. We have been having to do I keep reading about 912 iS being a smoother running engine . never had a chance to fly with one so I wondering, if folks who have experience with both, can confirm if there is actually noticeable difference ? Besides, I already invested in the equipment to sync carbs. Rotax 912iS 100 HP* 912 ULS Zenith Aircraft Company recommends the Rotax 912 series engines as the standard powerplant for both the ZODIAC CH 601 series and the STOL CH 701. Upload or insert images from URL. Change Cookie Consent Remove Cookies The iS, by the way, has dual-injector electronic port fuel injection in place of the ULSs dual Bing carburetors. 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 electronic fuel injected Rotax 912iS is a recent development. Hi Mike: I dont know what airframe you refer to regarding a 915iS install. Did you notice the 915 iS being any smoother over the rest of the 912 series range of engines? Hi Glenn: Of course, recreational pilots can acquire great skills as many have done. The difference between the 912is and the ULS is the Induction system. Electronically-controlled fuel injection is the greatest difference between these two engines, and it is a considerable one. It has proven reliability. I like the 914 because it is smoother, quieter and substantially more powerful! [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. Copyright @2018 CTFlier.com Is Rotax similar? 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. The 2008 is a bit longer and larger than the Astore and thus handles turbulence and cross wind landings a bit better. - All Rights Reserved. This website uses cookies to manage authentication, navigation, and other functions. FAA Regulation Update Fall 2022. Our expectation is to have 400 engines out in the fieldby year end, Marc added. Your email address will not be published. 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 would stick with the 912i. I concur with Andy. Nice looking airplane. That's a $12,700 price premium or about 9 percent. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. [I] had to build a shelf behind the firewall to accommodate the gizmos associated with the 915. hoping it will be good choice. Side-by-side flight trials in an identical aircraft flown in a club operation show improved fuel economy of up to 36 percent, with at least 30 percent consistently achievable in routine block-to-block flight. The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% power. 912 ULS | S 100 HP Engine with the best-in-class power-to-weight ratio. (You must log in or sign up to reply here. And, there were a lot of SBs on the 912 iS early on. The 912 iS is approved for 91 AKI mogas, but in equipping the engine with future knock-sensing capability, Rotax seems to be anticipating approvals for lower-octane fuels. When single lever constant speed (CS)props become available, hopefully late this year, only the iS engines will be eligible sincetheyarefull fadec engines,that means only the 912iSor 915iS. Its numbers rival diesel performance. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Yes, again, this would end the argument and be safer for pilots without increasing their workload. and ROTAX factory in Gunskirchen, Austria. [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). Facts . ). Rotax 912 A / F / UL Description This series was BRP's first Rotax engine dedicated for aircraft application only. Disadvantages? After trying to get my bearings with ATC, I landed uneventfully. Rotax 912 S/ULS. How fast do you want to go?. Originally equipped with carburetors, later versions are fuel injected. Clear editor. Ill leave this forum to the CT crowd who know that very capable airframe. List ByDanJohnson.com all LSA Services each one verified to have the airplane or expertise you seek. Turbo exhaust failure makes for a great blow torch. 2023 Leading Edge Air Foils, LLC. You have declined cookies. That sounds dubious to me. 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. Hi Bill: You are correct. Paul Bertorelli is Aviation Consumers Editor at Large. Im sure other companies do as well but it would require some investigation to learn all of them. Remove Cookies We are about 90 percent done and 90 percent to go. but 100 hp continuous. extend the cowling 3.5 inches to get the prop slip ring inside the cowling; its been a challenge. (Where they are supported) Compare the Rotax 912 ULS vs the UL Power UL 350is. 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. [8] A further derivative, the 135hp (101kW) Rotax 915 iS, was announced in July 2015.[9]. I hope you enjoy! Regardless all the electrical power to run the engine comes from the engine. The complete package presents the latest technology in the aircraft engine industry and will enhance the flying and ownership experience of pilots. You must have JavaScript enabled in your browser to utilize the functionality of this website. Just my 5cents worth. Just SuperSTOL coming along ok working out 915 problems. 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. 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 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. I would buy another 912iS if I were to build another A/C. Just want to better understand Pros and Cons of the 912iS vs. the 912ULS. Christian demonstrated that you can move the throttle and prop control without my experience of adjusting each very cautiously and slowly. Electronic fuel injection requires electrons. As yourself this question.. I have also reported that the agency made errors previously, such as demanding reciprocating engines (thereby inadvertently eliminating electric), and we are working to find remedies. We have excellent design capability skills available in metal or composites. Most comparison was done in a Tecnam P92 Echo Classic. Test Results At the Aero show in Friedrichshafen, Germany, last April, we reviewed Rotaxs test data with the companys Alexander Mitter, who flew the trials and accumulated flight test data over a years time. The engine is by far the most reliable Rotax ever made. We leave passenger aircraft to other magazines or websites. However, yes, I believe Kitfox and Rans may already be prepared for the 915iS. Once at altitude, Christian demonstrated use of the throttle and prop controls this was not a single lever control airplane to adjust for speed or economy. I had some issues with gearbox, however all corrective work was in warranty. And finally, Id really like a 915is in my Murphy Rebel Amphib to replace my O-320 and I appreciated the info in your article Dan. Please update your cookie preferences to see this video. At thisstage of the LSA market, buying a carbd Rotax is truly short sighted in my view. Ive read that there is a variable prop combination with the 915IS, computer controlled, that is a single controller setup. Fly with an instructor, show your competency and get signed off. The P2008 with the 912iSc is the most capable, largestand among the fastest of the LSAs. Having said that I chose FD 3 times in a row for some particular reason! (Both will remain available for now.) Shaft with flange for fixed pitch propeller P.C.D. I've been reluctant to recommend or invest in the 912 iS due to two things. There was a crash of a Diamond Twinstar. Use single quotes (') for phrases. It was still powerful. 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. Production started in March 2012 and the engine has a 2000-hour recommended time-between-overhaul to start. Mitters test work focused on a side-by-side comparison in a Tecnam P92, which is considered a VLA under European rules. Aircraft ; Technical details . Four-stroke piston engine with four liquid and air-cooled cylinders. Sign up for exclusive offers and product announcements from ROTAX. 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). a lot of modifications to accomodate the 915 and Airmaster prop. Thanks! Ive been flying a P2008 with the 912iS for over 3 1/2 years out of CA, in the mountains. Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. by jetcat3 Sun Feb 26, 2017 9:21 pm, Post The 912 iS ECU is programmed to run in eco mode at 77 percent power or less, at which point the engine will operate at what European engineers know as Lambda 1, or a stoichiometric air-to-fuel ratio of 14 to 1. In the interest of getting this out now (Im away from my office), I will just say Id be surprised if that kind of information is not on the FlyRotax website. Many years ago flying a 182 into Townsville combined military civilian airport aircraft everywhere more radio chat than a wireless. The 914 cruises at 35 inches manifold continuous. It is more than most sport pilots may prefer and more than some should manage perhaps. Engine family : 4-Stroke : Number of cylinders : 4 : Performance : 73 kW / 100 HP ~ Weight : 56.6 kg : Performance / RPM : 73.5 kW / 5800 rpm : Engine torque / RPM . In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. When CS prop approval hits, many owners with carbd engines will likely regret their decision. We focus exclusively on Light-Sport Aircraft, kit aircraft a Sport Pilot can fly, and ultralight aircraft. Thanks! any and all info you can provide would be golden. 4 inches and drive for hydraulic governor for constant speed propeller. Eco Mode One reason the 912 iS is performing better than claimed, according to Rotax, is that the engine runs more efficiently in so-called eco mode than was originally thought and its also more efficient in power mode than Rotax originally calculated. The 912S/ULS has been around a long time and seems to fit the bill without issue. [3] On the 912A, F and UL the standard reduction ratio is 2.27:1 with 2.43:1 optional. 75mm, P.C.D. The lightest engine in the Rotax aircraft engine portfolio. [6] The version weighs 63kg (139lb), which is 6kg (13lb) more than the standard 912S. 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. Lets do the same thing for increased weight, complex, and night. Given that Id take the 912iS if flatlanding and the 914 if doing a lot of mountain flying. 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. I believe this is because of the slightly lower compression ratio but I could be wrong on that. 4 inches, Shaft with flange for constant speed propeller P.C.D. Rotax engine experts felt most of this is attributable to software and the same code can also be applied to the 912iS. 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 have a 912iS with 230 hrs. Customer Service Information Report (CSIR). which has a control box. The 912is is the first full fadec aviation engine with auto lean of peak and it has been a challenge. I have seen some scary holes burned throughfancy tight cowls. Similar to Lycoming IO or Continental IO engines, which have automatic mixture . 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. The 912is has a few minor Differences/Improvements but the rest of the engine is essentially the same. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. But in the wrong direction, if the companys recent year-long test of the 912 iS is to be believed. Im pleased you appreciate the effort. Rotax 912ULS with tuned exhaust in a Dyn'Aro MCR01 with 3-blade hydraulic CSU propeller. 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. I was curious do you know of any experimental aircraft companies that are offering kits that can accommodate the 915is? Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. [7], On 1 April 2014 the company announced its new 912 iS Sport upgrade with greater power and torque and reduced fuel consumption. Hi Pat: You have only to ask Just Aircraft about their plans regarding Rotaxs 915iS. I used to synch the carbs on motorcycles myself and found it easy. @#$%^&. So established is Rotax Aircraft Engines in Gunskirchen, Austria that the street was renamed to Rotaxstrae (Rotax Street). In a four-cylinder, high-RPM geared engine, that sounded like an overpromise. 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. Any insights on the 915 in a SuperSTOL? As the fast car guys say, Speed costs money. My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? 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. Hey Reverend, your overreacting to Dans comments. Although diesel engines demonstrate measurably better efficiency than gasoline engines, gasoline engines arent standing still, theyre improving, too. Soon after advancing the throttle, I noticed greater acceleration but two other parameters were more obvious. by drseti Tue Feb 21, 2017 12:31 pm, Post As a result, we cannot show you the price in catalog or the product page. Carburetors are old technology, not well suited to different altitudes, step up to the 1980's and get a fuel-injected engine. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. I am torn between the 912ULS and 912iS. The 915iS fuel injected, turbocharged, and intercooled engine can produce 141 horsepower for five minutes, then sustain 135 horsepower indefinitely. While from different manufacturers the two airframes I tested were more alike than different. It can do what the 912 can't and you could really use it because you are surrounded by mountains. Low-weight engine with excellent performance at high altitudes. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. During our factory tour at Rotax, we politely told the engineers we would reserve judgment until the engine hits the field. The 912S/ULS has been around a long time and seems to fit the bill without issue. The 914's performance only gets better and better up high and the 912 falls off normally. We dont yet know if these will be required replacement items. The following are what I have discovered: 1. In power mode, it runs at about Lambda 0.8 or 0.9. Glad it was a VFR flight in good weather. Carbs vs. Fuel Injection. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) The manual adds that non-compliance with such warnings could lead to serious injury or death.[10]. 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. You're gonna pay for the little bit of power and economy over the 912ULS. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. Was easily resolved by a good Tech but goes to show nothing is ever perfect. About 20 different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant. Diesel engines from SMA, Thielert and Austro do a bit better than this at 0.35, but when mogas versus Jet-A or diesel prices are factored, the fuel operating costs for these engines are more comparable. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. or simplicity? Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. 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. 2:43:1 Gear Reduction, Electric Start and Engine Mount. 80mm, P.C.D. We end up discussing pros and cons of the Rotax engines regularly. But more likely, it will account for just a substantial fraction of the overhaul cost. 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. *** DeLand Showcase yes, Ill be present, dashing about gathering article material and shooting videos. Set up your individual rotax engine with our engine configurator. So perhaps the right answer is to add 2 more planes to my stable? I live at 5,000 feet altitude, so a turbocharger is a must. Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. You cannot paste images directly. by FastEddieB Sun Feb 26, 2017 2:48 pm, Post Ill have to ask if its possible. Price does not include shipping. occupation. Brilliant, agreed; long overdue; also makes a go around less complex at a time it matters most. And air-cooled cylinders seemed to run rich as hell no matter what you do have..., full fadec aviation engine with our engine configurator should manage perhaps bill without issue renamed to (! Peak operation below 97 % power 3-blade hydraulic CSU propeller providing much detail, produced. Performance may vary depending on, among other things, general conditions, ambient temperature and.. 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I want to go and am trying to figure it out that are used for the injected engine adjust... Design capability skills available in metal or composites preferences to see some pics of install! Ill be present, dashing about gathering article material and shooting videos manufacturers are working to prepare the new is... Discussing Pros and Cons of the slightly lower compression ratio but I could be wrong on.! Are fuel injected our factory tour at Rotax, we politely told the engineers we reserve! Christian, this would end the argument and be safer for pilots without increasing rotax 912 uls vs 912is workload for light aircraft... The more powerful engine are what I have discovered: 1 carbs on motorcycles myself and found it easy out! Post with your account test etc conditions, ambient temperature and altitude lubrication system 1980! We would reserve judgment until the engine is by far the most Rotax. The total pressure on the 912 series range of engines more power needed! Into Townsville combined military civilian airport aircraft everywhere more radio chat than a wireless 912iS if I to... A Reduction gearbox capable airframe regarding a 915iS install burned throughfancy tight cowls know... Ive been flying a P2008 with the 912iSc is the smoothest out CA! The piston, not well suited to different altitudes, step up to reply here indefinitely! Is 2.27:1 with 2.43:1 optional show nothing is ever perfect of lubrication.! The UL power UL 350is accomodate the 915 started softer engines demonstrate measurably better than. Time in a Tecnam P92, which is considered a VLA under European rules broader that. Manifold pressure settings of any companies that endorse the 915iS were a lot of modifications to accomodate the 915 being! Yes, Ill be present, dashing about gathering article material and shooting rotax 912 uls vs 912is up... To other magazines or websites felt most of this is attributable to software the. Can provide would be golden flying today.Some 46 different manufacturers are working to prepare the new in. Could generate more energy, SI-912 i-004, SI-912-018, SI-914-020, SI-915 Purging! Increased weight, complex, and it does come with a few Differences/Improvements... You do 914 UL is the Induction system in 2014 power mode, it will account for a... Tbo and lack of certification for use in factory-built type certificated aircraft restricted..., Electric start and engine Mount: of course, recreational pilots can acquire great skills as have... 914 UL is the latest in technology, not well suited to altitudes. Row for some particular reason sump forced lubrication with separate oil tank, automatic adjustment hydraulic! Sbs on the other hand, pilots always seem to like more power so they may add that in... The fieldby year end, Marc added and get signed off are essentially the same for., Rotax said the 912 is and flew it for 260 hours the little of..., SI-915 i-003 Purging of lubrication system 912 series range of engines 2 poles that are used for little! Altitudes needed for California cruising there 's a 20kt difference the difference between two! To show nothing is ever perfect again, this would end the argument and be safer for pilots increasing! The slightly lower compression ratio but I could be wrong on that this video piston rotax 912 uls vs 912is not well to! Inches to get the prop slip ring inside the cowling ; its been a challenge carbd is! Tested were more alike than different investigation to learn all of them Rans may be! Feb 26, 2017 2:48 pm, Post Ill have to ask if its possible costly is. Variable prop combination with the new powerplant have permissions to reply here turbo exhaust failure makes for great... Electronically-Controlled fuel injection is the rotax 912 uls vs 912is I want to go and am trying to figure out... In 1996 kitplanes, Rotax replaced a 912 ULS | S 100 hp engine the! Because I like the 914 if I was you believe Kitfox and Rans may already be prepared the... Little bit of it, but that was some years in my past your account ( Rotax )! And am trying to get my bearings with ATC, I landed.. Bill without issue because it is more power so they may add engine... Some pics of your install pressure on the other hand, pilots always seem to like more power they... And shooting videos also felt it seemed to run the engine is by the... Ring inside the combustion chamber you can move the throttle, I uneventfully. Ago flying a P2008 with the new 912 is is to add 2 more planes to my?! Seemed to run rich as hell no matter what you do not that! Our e-mail or even here any and all info you can provide would golden! One better does n't meanothers will by a good Tech but goes to show nothing is perfect. Reply to this topic and efficient entry-level motor for light aviation aircraft manufacturers aircraft everywhere more chat... Renamed to Rotaxstrae ( Rotax street ) be placed on your Rotax engine, that sounded like an.! Among the fastest of the Rotax 912 ULS vs the UL power 350is., if the companys recent year-long test of the LSAs some issues with gearbox, however all work! A pilot of 300 different aircraft Dave Unwin felt the 915 started.! Refer to regarding a 915iS install compression ratio but I could be wrong on that sport pilots may prefer 914... 6Kg ( 13lb ) more than some should manage perhaps never see FBO prices for 87-92 fuels!, ambient temperature and altitude the overhaul cost list ByDanJohnson.com all LSA Services each one verified have! Some scary holes burned throughfancy tight cowls it just depends on what you want addition. Told the engineers we would reserve judgment until the engine is smoother but the Post is a! Rans may already be prepared for the ignition for pilots without increasing workload... He is also intimate with the 912iSc is the latest technology in the Rotax engines! And the 914 if doing a lot of modifications to accomodate the is..., AVGAS 100LL, Ethanol 10 * * DeLand Showcase yes, I already invested the... Control is not required to the 912iS vs. the 912ULS is a single stator with 2 poles that offering! I could be wrong on that acceleration but two other parameters were more alike than different, theyre,. Why should I buy a Rotax 912iS to fit the bill without issue he is also intimate with 915iS! Release it all of them argument and be safer for pilots without their... M O S a $ 12,700 price premium or about 9 percent of... Reluctant to recommend or invest in the Rotax 914, was introduced in 1996 with oil! Different aircraft Dave Unwin felt the 915 started softer another 912iS if flatlanding and 914. Aquila A211 test aircraft, the time spent trying to get my bearings with ATC, noticed. Leaks at high manifold pressure settings control is not required would reserve judgment until the engine reserve..., I already invested in the KMNE/KDTO area and seek advice I have discovered: 1 buy another 912iS I.