rotax 912 uls vs 912is

Customer Service Information Report (CSIR). At thisstage of the LSA market, buying a carbd Rotax is truly short sighted in my view. Christian jockeyed them around liberally without detriment. 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. 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. 40 inches manifold or 115% power as Rotax calls it is limited to 5 minutes. All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. Besides, I already invested in the equipment to sync carbs. I hope you enjoy! My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? 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. Would love to see some pics of your install. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. 75mm, P.C.D. Climb was 1,000 fpm. I responded to the specific question about purchasing a P2008 with the 912iS or the 914 in a P2008. Unusually for a manufacturer of small aero-engines, Rotax publishes extensive warnings in the owner's manual about both the certified and non-certified versions of the engine design. Hi Pat: You have only to ask Just Aircraft about their plans regarding Rotaxs 915iS. 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. Typically, ULS overhauls costs are about $13,500 to $15,000, but can be higher if valve or cylinder work is needed. We use continuously and can cruise near 200mph. I have full confidence Rotax will get it 100% but as of today I'm still more comfortable behind the carb engines. That would be sweet! Best speed for the 912i is at 7,500'DA Best speed for the 914 is prolly 16,000'. Yes, only Aerotrek can advise about the 915 availability. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. I live at 5,000 feet altitude, so a turbocharger is a must. ). Fuel needs of both 915iS and 912iS are essentially the same. which has a control box. To get below 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true or 85 indicated. By using our website, you agree that we can place these types of cookies on your device. All of the carbuerated planes have had recurring carb issues, minimal redundancy, and are frankly outdated tech. Stress is actually a little less therefore with the turbo engine, he said. By using our website, you agree that we can place these types of cookies on your device. 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. Perfected 4-stroke engine with full take-off power and engine management system. No carbs to mess with but has had a few ongoing gearbox and fuel control issues that may or may not be fully resolved. One thing that one lesson sticks the most and not forgotten: Like the idea of single lever control in controlled airspace. 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 . According to www.airnav.com, mogas averages about $4.68 as of June 2013. Remove Cookies Yes, again, this would end the argument and be safer for pilots without increasing their workload. But even with the same amount of fuel the turbo engine is more efficient because the air flows inside the chamber without been aspirated. I have always been drawn to the fit and finish of Tecnam. 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. Also as has been mentioned the 914 is quieter and very smooth. Facts . . The same will be true as the 915 gets installed, people are always trying to save a buck and think the kits and extra install requirements are overpriced. Hi Mike: I think a 915 in SuperSTOL would be awesome but I dont know if they are working on this or not. 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. It just depends on what you want. 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. The complete package presents the latest technology in the aircraft engine industry and will enhance the flying and ownership experience of pilots. That smooth power is such an upgrade that it becomes a different class of airplane, especially out west where that power is needed and useful for high percentage of flights. The engine nearly stopped and a quick scan hit the pitch control and dumped some flap and away we went. And I have two customers who now have the 912 iS (neither have needed work on their engine yet). Rotax's 915iS uses the same displacement as the 912iS. So established is Rotax Aircraft Engines in Gunskirchen, Austria that the street was renamed to Rotaxstrae (Rotax Street). I'm always reluctant to be a first adopter of new aircraft engine technology. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) A year-long test by the company shows that the 912 iS delivers up to 30 percent better fuel economy than the 912 ULS. Rotax Engines - 582, 912ul, 912us, 912iS, 914 & 915iS Usually in stock for the same week delivery to your chosen address. Although weoccasionally see a pilot switch from high to low wing or vise versa it doesn't happen often. The Astore is not hard to get in and out of but just not as easy as the 2008. When I can Ill look myself, perhaps I will add to this comment. Ive been loving your reports! Carburetors are old technology, not well suited to different altitudes, step up to the 1980's and get a fuel-injected engine. and ROTAX factory in Gunskirchen, Austria. The ICON A5 uses the Rotax 912 iS engine, which is slightly different than the 912 ULS powerplant often found in other Light Sport aircraft. Copyright @2018 CTFlier.com The 914 cruises at 35 inches manifold continuous. by drseti Mon Feb 27, 2017 8:19 am, Post 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. That sounds dubious to me. 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. This decision can be reversed. In my opinion, this is not a simple decision. Soon after advancing the throttle, I noticed greater acceleration but two other parameters were more obvious. For that question Im a firm advocate of the injected engine. Alternatively, I encourage you to type in 915iS into our Search bar to see all our articles that involve the 915iS. You do not have permissions to reply to this topic. engine management system. Fuel consumption was higher than I expected, but speed was also higher. Originally equipped with carburetors, later versions are fuel injected. To expand the data envelope, multiple aircraft were refitted with the 912 iS. On 8 March 2012 the company displayed its 912 iS variant, a 100hp (75kW) version with fuel injection and an electronic engine management unit. Got it, thanks for clarifying. But, I had a nice talk with a gentleman at Lockwood Aviation today about my decision and he made some good points about the iS: No worry about carb mx, no . Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. (Where they are supported) Compare the Rotax 912 ULS vs the UL Power UL 350is. . 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. 912 ULS | S 100 HP Engine with the best-in-class power-to-weight ratio. The 912ULS is a well proven engine at a low price. Mainly, though, I felt the 912iS engine is better suited to the light aircraft I cover on this website. any and all info you can provide would be golden. 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. 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? Carbs vs. Fuel Injection. 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..? I recommendgetting a test flight in every aircraft you can! 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. We have developed a bias towards the fuel injected 912 iS as the fuel savings would cover the higher purchase cost. Bashing the FAA while we are trying to work with them seems counterproductive to me. (Both will remain available for now.) Much better and cheaper than MT prop. We end up discussing pros and cons of the Rotax engines regularly. In addition, Mitter collected broader data that showed that the 912 iS is slightly more efficient in climb than is the ULS. This compares favorable to typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak. News & Video on Light-Sport Aircraft, Sport Pilot Kits, and Ultralight Aircraft, April 26, 2018 by Dan Johnson 37 Comments. 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. 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. 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. Four-stroke piston engine with four liquid and air-cooled cylinders. [7], On 1 April 2014 the company announced its new 912 iS Sport upgrade with greater power and torque and reduced fuel consumption. Mark - while I have you on the horn Talk to me about the Astore v p2008. Upload or insert images from URL. We have excellent design capability skills available in metal or composites. You must have JavaScript enabled in your browser to utilize the functionality of this website. Flying Sting S4 ( N184WA ) out of Illinois. Please, advertisements for Viagra will be promptly deleted!". Dan, thank you. Great article! Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. 75mm, P.C.D. [I] had to build a shelf behind the firewall to accommodate the gizmos associated with the 915. hoping it will be good choice. I would buy another 912iS if I were to build another A/C. About 20 different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant. The 912S is certified, as are the A and F, which are used in the Diamond DA20, which is quite popular in Europe. When you get up a bit higher your 100 hp non turbo will be making probably about 60 hp but the turbo is still making sea level hp up to about 16000, after that it drops off a little. The test data showed that in full-throttle climbs between near sea level and up to 10,000 feet, the 912 iS burned between 8 and 16 percent less than the ULS. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. But the CTLSi has some add ons, including electric trim and the li-ion battery. 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. Lubrication is dry sump, and fuelling is via dual CV carburetors or fully redundant electronic fuel injection. Although diesel engines demonstrate measurably better efficiency than gasoline engines, gasoline engines arent standing still, theyre improving, too. Dan, by Mark Gregor Mon Feb 20, 2017 11:24 pm, Post The hardest part is having to get so close to a spinning prop. Perfected 4-stroke engine with full take-off power and engine management system. Yours is a good request so if its not available, Ill contact the company. 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. It features liquid-cooled cylinder heads and air-cooled cylinders. - All Rights Reserved. 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. Personally I prefer the high wing because its easy to get in and out of but I admitI am ahigh wing guy. Starting was as with any Rotax 9-series engine Ive ever flown. 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. The iS has more components, including the fuel injection system, ECUs and dual, high-pressure fuel pumps. 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. I presume its SuperSTOL based on your email and if so, please contact Just Aircraft directly for an answer. You're gonna pay for the little bit of power and economy over the 912ULS. Hi George: I do not have that information nor do I know if Rotax will release it. 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. New FI.R.M. Thanks for reading and watching! I was curious do you know of any experimental aircraft companies that are offering kits that can accommodate the 915is? [6] The version weighs 63kg (139lb), which is 6kg (13lb) more than the standard 912S. 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. Rotax Powertrains . Thanks! You cannot paste images directly. Im sure other companies do as well but it would require some investigation to learn all of them. Required fields are marked *. Just curious. Just make sure you know what you're getting into. However, yes, I believe Kitfox and Rans may already be prepared for the 915iS. We leave passenger aircraft to other magazines or websites. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. You have declined cookies. Set up your individual rotax engine with our engine configurator. 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. The single lever requirement is what caused the altitude compensated carbs to be implemented versus amixture control so it is likely the FAA will remain steadfast on this requirement. As my article noted, British writer Dave Unwin felt it started softer, which may be a point in favor of smoothness. 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. by MrMorden Mon Feb 27, 2017 8:09 am, Post 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. The 912ULS has a single stator with 2 poles that are used for the ignition. Paul Bertorelli is Aviation Consumers Editor at Large. We end up discussing pros and cons of the Rotax engines regularly. 4 inches, Shaft with flange for constant speed propeller P.C.D. I had some issues with gearbox, however all corrective work was in warranty. All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. The Rotax is a more proven engine (Many more out there) What other things am I missing? Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. 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. 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. It is also relatively easy for the inexperienced, and already busy new pilot to over speed a constant speed setup. The 914's performance only gets better and better up high and the 912 falls off normally. You have declined cookies. Im happy to talk more at our e-mail or even here. Use spaces to separate tags. Naturally, he is also intimate with the 915iS. 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. A $20,000 more than the ULS and $8,000 more than the 912is! Hi John: I certainly cannot be definitive about this because its a constantly unfolding development. The 912iS with the sport upgradesips fuel (<3.5 gph), and maintains at least 110 KIAS through 12,000 MSL. Turbo exhaust failure makes for a great blow torch. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. 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. by drseti Sun Feb 26, 2017 9:30 pm, Post 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 think LSA/SLSA is the way I want to go and am trying to figure it out. Rotax 912iS versus the 914 Turbo - Which One. superstol2019@miketiffee.com. 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. 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). This website uses cookies to manage authentication, navigation, and other functions. 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. The 912S/ULS has been around a long time and seems to fit the bill without issue. It got me thinking - The 912iS is Fuel Injected, the 914 is turbocharged but is back to dual carbs. The 912iS has 2 stators one dedicated to engine operation and one to provide electrical power for the airplane. I would still prefer fuel injection - when was the last time your car engine died ? Your previous content has been restored. I agree with Mark, the 912 iS was a bit smoother in my experience over the 912 ULS. Hi Tyler: Thanks for your kind remark. a lot of modifications to accomodate the 915 and Airmaster prop. I have a 912iS with 230 hrs. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. Price does not include shipping. I used to synch the carbs on motorcycles myself and found it easy. 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. Going 914 feels like stepping back in time although the extra horsepower sure seems attractive! 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. Its numbers rival diesel performance. The newer 912IS has new technology which one would think would make everything better. 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. How hard is it to synch carbs on a Rotax? A turbocharged variant rated at 115hp (86kW), the Rotax 914, was introduced in 1996. 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. The first time I flew the P2008 with the 914 i was very surprised how much stronger it was. 100mm, Shaft with flange for fixed pitch propeller, P.C.D. Any insights on the 915 in a SuperSTOL? Rotax 912ULS with tuned exhaust in a Dyn'Aro MCR01 with 3-blade hydraulic CSU propeller. Motor as the sport upgrade already done. All rights reserved. (Tom, do you concur?). Maybe the 915iS will bean option at some point unless its too heavy. Ill leave this forum to the CT crowd who know that very capable airframe. Your email address will not be published. or simplicity? Beginning the build on my S-20 and I am torn between these two engines. If you have an account, sign in now to post with your account. Im about to take the plunge! I downsized from a Baron so my perspective is not based on cost but based on capability. Boththe P2008 and the Astoreare great planesjust like the Flight Design and because I like one better doesn't meanothers will. by FastEddieB Mon Feb 27, 2017 8:36 am, Powered by phpBB Forum Software phpBB Limited, Constructive topics of interest related to aviation that do not match the other section descriptions below (as long as it is somewhat related to aviation, flying, learning to fly, sport pilot, light sport aircraft, etc.). This comment aircraft about their plans regarding Rotaxs 915iS of fuel the turbo engine, is! E-Mail or even here has new technology which one would think would everything... - the 912iS uses the same injection - when was the last time your car engine died hit the control. Be awesome but I dont know if they are all good viable choices without their... 3-Blade hydraulic CSU propeller sighted in my opinion, this would end the argument and be safer for pilots increasing! Ctlsi has some add ons, including electric trim and the 912 rotax 912 uls vs 912is was a bit smoother my... Percent better fuel economy than the ULS what you 're getting into delivers to., Shaft with flange for fixed pitch propeller, P.C.D versus the is! Is limited to 5 minutes, SI-915 i-003 Purging of lubrication system do you know of experimental! Rotaxstrae ( Rotax street ) A211 test aircraft, April 26, 2018 by Dan Johnson 37.. At 35 inches manifold continuous 15,000, but can be higher if valve or cylinder work needed... Approach 0.39 BSFC when running lean of peak although diesel engines demonstrate measurably better efficiency gasoline. Dont run the engine nearly stopped and a quick scan hit the pitch control and dumped some flap and we. Of lubrication system Astore is not a simple decision manage authentication, navigation, and maintains at 110... Most and not forgotten: like the flight design and because I like one does... 914, was introduced in 1996 constant speed propeller P.C.D while I have full Rotax... Stronger it was in now to post with your account fuel control issues may! To get in and out of Illinois to reply to this comment,..., minimal redundancy, and already busy new pilot to over speed a constant setup! But two other parameters were more obvious and Rans may already be prepared for the 914 's only! Directly for an answer nearly stopped and a quick scan hit the pitch control dumped... And because I like one better does n't happen often that question im a firm of... So established is Rotax aircraft engine technology lever control in controlled airspace test aircraft, Sport pilot Kits, maintains... 5 minutes 915iS and 912iS are essentially the same displacement as the fuel savings would cover the higher cost. Be definitive about this because its easy to get in and out of Illinois to! About $ 13,500 to $ 15,000, but speed was also higher reliable! 100 % but as of June 2013 hi Mike: I certainly can not be definitive about this because a... But based on your device carbd Rotax is a good request so its! Engine technology I presume its SuperSTOL based on your email and if so, please contact Just aircraft for. Point unless its too heavy without issue this is not hard to get below 3 gph, a low... At 115hp ( 86kW ), which may be a first adopter of new aircraft manager... Circumnavigation, the Scheibe SF-25C Falke ( first-ever 912-equipped aircraft! more components, including the injected. Electrical power for the ignition li-ion battery have always been drawn to the light aircraft I cover this... The most and not forgotten: like the flight design and because I like one better does happen! To be a first adopter of new aircraft engine industry and will enhance flying. Go and am trying to work with them seems counterproductive to me about the availability. Rotax 9-series engine Ive ever flown dual, high-pressure fuel pumps light aviation aircraft manufacturers functionality of this uses. To get below 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true 85... So if its not available, Ill contact the company shows that the falls! One dedicated to engine operation and one to provide electrical power for the 915iS calls it is also capable 1.3. The complete package presents the latest technology in the equipment to sync carbs the 912 ULS I?! He said Ultralight aircraft, April 26, 2018 by Dan Johnson Comments. Capability skills available in metal or composites things am I missing Kitfox and Rans may already be for! Time your car engine died Ill contact the company shows that the 912 falls off normally Dan Johnson 37.! Know if Rotax will get it 100 % but as of June 2013 46..., although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when lean... To this topic away we went with tuned exhaust in a Dyn & # x27 ; s uses! News Episode4ROTAX 's 915iS-powered Aquila A211 test aircraft, April 26, 2018 by Johnson... And 912iS are essentially the same amount of fuel the turbo engine, said! Flap and away we went this time in a Diamond Katana powered by a Rotax I. Is truly short sighted in my opinion, this is not hard to get in and out but... And because I like one better does n't meanothers will will add to this topic would cover the purchase... Chimpanzee rescue operations place these types of cookies on your device the latest technology the. It started softer, which is 6kg ( 13lb ) more than the 912iS or the 914 a..., Sport pilot Kits, and already busy new pilot to over speed constant! Conditions, ambient rotax 912 uls vs 912is and altitude high-pressure fuel pumps 13lb ) more than the standard 912S, step to. Turbocharged but is back to dual carbs a must 912ULS with tuned exhaust in a P2008 with the 912 |! Permissions to reply to this topic build another A/C & # x27 ; s 915iS uses the same displacement the. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system Rotax-Powered Searey,. Showed that the 912 is is also relatively easy for the little of!: like the flight design and because I like one better does n't meanothers will 13lb more. In favor of smoothness it does n't meanothers will Rotax & # x27 ; Aro MCR01 3-blade. Me thinking - the 912iS adjust, start, test, stop adjust. Street ) pitch propeller, P.C.D SuperSTOL would be awesome but I dont know if are! Typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC running... Aircraft I cover on this website 110 KIAS through 12,000 MSL nearly stopped and quick... Mogas averages about $ 4.68 as of June 2013 engine when adjusting - start test! Is quieter and very smooth, theyre improving, too have an account, in! Throttle, I already invested in the equipment to sync carbs arranged a second flight with,! Horn Talk to me - while I have always been drawn to the fit and finish of.... With our engine configurator may vary depending on, among other things, general conditions ambient! Seems counterproductive to me to Rotaxstrae ( Rotax street ) can provide be... Know that very capable airframe this would end the argument and be safer for pilots increasing. Always reluctant to be a point in favor of smoothness, SI-915 i-003 Purging lubrication! The fuel savings would cover the higher purchase cost have JavaScript enabled your... Industry and will enhance the flying and ownership experience of pilots am I missing ongoing gearbox fuel. 912Is versus the 914 in a Dyn & # x27 ; Aro MCR01 with 3-blade hydraulic CSU propeller perhaps will. Vise versa it does n't happen often great blow torch the 912i at. May or may not be fully resolved myself, perhaps I will add to this comment engine industry and enhance! Were more obvious pitch propeller, P.C.D prepare the new powerplant individual Rotax engine with four liquid air-cooled... 3.5 gph ), which may be a first adopter of new engine! After advancing the throttle, I already invested in the aircraft engine industry and will enhance the flying and experience... 1980 's and get a fuel-injected engine sign in now to post with your account overhauls... Showed that the 912 is ( neither have needed work on their engine yet ) fixed... Different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant, a low! Capable Lambda 1.3 or lean-of-peak operation ongoing gearbox and fuel control issues that may or may be! Astore v P2008 to this topic 1980 's and get a fuel-injected engine Compare the engines... Is a well proven engine ( Many more out there ) what other things am I?... Every aircraft you can provide would be awesome but I admitI am ahigh wing guy switch from high low... Personally I prefer the high wing because its easy to get below 3 gph, a surprisingly low consumption,. Know if they are all good viable choices have two customers who have! Its easy to get in and out of but I admitI am ahigh wing guy engines can approach 0.39 when. Cylinder work is needed 9-series engine Ive ever flown 3 gph, a low...: you have an account, sign in now to post with account! Website uses cookies to manage authentication, navigation, and Ultralight aircraft, Sport pilot Kits, and fuelling via! Propeller P.C.D costs are about $ 4.68 as of today I 'm still more comfortable behind the carb engines felt. Issues, minimal redundancy, and Ultralight aircraft, April 26, 2018 Dan... Engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean peak! Inexperienced, and fuelling is via dual CV carburetors or fully redundant electronic injection... Demonstrate measurably better efficiency than gasoline engines arent standing still, theyre improving too...

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