2. I am torn between the 912ULS and 912iS. We have developed a bias towards the fuel injected 912 iS as the fuel savings would cover the higher purchase cost. 912 UL / A / F 80 HP. Roger Lee LSRM-A & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield (KRYN)520-349-7056 Cell. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. 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. Low-weight engine with excellent performance at high altitudes. Rotax 914 Turbo Rotax 912 ULS Rate of Climb SportStar MAX CRUISE VH- Max.speed in level flight at MCP 124 KCAS 115 KCAS 110 KCAS 112 KCAS 114 KCAS 116 KCAS 118 KCAS 120 KCAS 122 KCAS 124 KCAS 126 KCAS 128 KCAS 130 KCAS Rotax 914 Turbo Rotax 912 ULS SportStar MAX AVERAGE HOUR FUEL CONSUMPTION 5,3 Gal(US)/h 4,2 Gal (US) / h [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. Overall I would argue better minds than ours made a good call. Shaft with flange for fixed pitch propeller P.C.D. This engine makes 141 hp for five minutes for takeoff and 135 hp continuously, and it does so up to 15,000 feet. 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. Upload or insert images from URL. No other modifications were done, according to Mitter, other than fuel plumbing. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) 4 inches also can be fitted with an adaptor, drive and governor for a constant speed propeller. 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. I was replying to Jay who said he was doing a SS build with a 915 and was hoping to see what he mentioned in his post. Price does not include shipping. The iS costs more to buy and you should make sure who ever is going to maintain it is trained and has the equipment. There has been much made of early issues with the 912iS. An Astore with 912iS and a P2008 with the 914 :-). Although weoccasionally see a pilot switch from high to low wing or vise versa it doesn't happen often. I heard a rumor at OSH that Rotax has a 6 cylinder development project with 200+ hp. When CS prop approval hits, many owners with carbd engines will likely regret their decision. The Rotax is $2092 cheaper 2. or simplicity? We leave passenger aircraft to other magazines or websites. We live in the KMNE/KDTO area and seek advice. Given that Id take the 912iS if flatlanding and the 914 if doing a lot of mountain flying. 2023 Leading Edge Air Foils, LLC. Ive been flying a P2008 with the 912iS for over 3 1/2 years out of CA, in the mountains. The iS is a nice improvement over the ULS but is high tech for sure. Having said that I chose FD 3 times in a row for some particular reason! At this setting the 914 is making a lot more horsepower that a 912. Christian jockeyed them around liberally without detriment. The 912iS has 2 stators one dedicated to engine operation and one to provide electrical power for the airplane. 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. Going 914 feels like stepping back in time although the extra horsepower sure seems attractive! The hardest part is having to get so close to a spinning prop. Such an aircraft is far outside our area of reporting. Im pleased you appreciate the effort. Aircraft ; Technical details . All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. 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. Hi Drew: Thanks for your kind words. Reconsider Cookies Which is your favorite (and why)? Required fields are marked *. What make and model of turbocharger does Rotax use on the 914 and 915is engines? Fly with an instructor, show your competency and get signed off. Think about it, it means a ~60% cruise power increase! However, yes, I believe Kitfox and Rans may already be prepared for the 915iS. Ill leave this forum to the CT crowd who know that very capable airframe. In a four-cylinder, high-RPM geared engine, that sounded like an overpromise. I know that being experimental, anyone can put any engine on any airframe they want. We have excellent design capability skills available in metal or composites. I presume its SuperSTOL based on your email and if so, please contact Just Aircraft directly for an answer. Earlier this year, Rotax. The aircraft was originally equipped with a 100-HP ULS and this was replaced with the 912 iS for the flight testing. because I thought you saved a lot of carburator work, hence 912iS being simpler.. but I'm no expert. 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 have 40 hours on my new 912iS and it has performed flawlessly. 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. continuous power at 5500 1/min*** MOGAS, no hydraulic governor. 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. Greaser! Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. That sounds dubious to me. The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. 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. Use single quotes (') for phrases. For everyone else simplicity is probably best. Plan on attending the Annual Sport Pilot Expo. Flight Design's base price on the 912 iS version of the airplane is $152,500 versus $139,800 for a comparably equipped 912 ULS CTLS. I have been thinking ULS for great history, lower cost, lower weight, etc. *** I didnt notice the 915iS was more smooth than the 912iS I flew later that day, but it was certainly a smooth-running engine. by MrMorden Tue Feb 21, 2017 10:21 am, Post To get below 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true or 85 indicated. We also are interested in engine overhaul specialty center with state of art facility available for immediate. by FastEddieB Mon Feb 27, 2017 8:11 am, Post 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 Rotax 912 was first sold in 1989 in non-certificated form for use in ultralights and motorgliders. I've yet to dig through the manual, guys, but I think Andy nailed it. The iS, by the way, has dual-injector electronic port fuel injection in place of the ULSs dual Bing carburetors. If you have an account, sign in now to post with your account. In power mode, it runs at about Lambda 0.8 or 0.9. 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. Many years ago flying a 182 into Townsville combined military civilian airport aircraft everywhere more radio chat than a wireless. Is Rotax similar? The 912iS with the sport upgradesips fuel (<3.5 gph), and maintains at least 110 KIAS through 12,000 MSL. It was still powerful. Best speed for the 912i is at 7,500'DA Best speed for the 914 is prolly 16,000'. Yes there will likely be some carb maintenance on the 912ULS and the 914 but overall we have seen less issues than on the 912is. Thomas Uhr, head of Rotaxs Austria plant and a longtime engine expert and enthusiast and also a pilot advises the highest octane auto fuel, preferably without alcohol, to get the most power and best results. 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. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. I have a 912iS with 230 hrs. You do not have permissions to reply to this topic. Mainly, though, I felt the 912iS engine is better suited to the light aircraft I cover on this website. Change Cookie Consent The 912is has a few minor Differences/Improvements but the rest of the engine is essentially the same. 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. 1. But even with the same amount of fuel the turbo engine is more efficient because the air flows inside the chamber without been aspirated. [3] The 100hp (75kW) versions are used in many light sport aircraft, such as the Zenith STOL CH 701 and the Tecnam P2002 Sierra. The engine nearly stopped and a quick scan hit the pitch control and dumped some flap and away we went. It is more than most sport pilots may prefer and more than some should manage perhaps. The difference between the 912is and the ULS is the Induction system. We end up discussing pros and cons of the Rotax engines regularly. (Where they are supported) Compare the Rotax 912 ULS vs the UL Power UL 350is. Most comparison was done in a Tecnam P92 Echo Classic. and ROTAX factory in Gunskirchen, Austria. When Rotax surprised us last year with the rollout of its new 912 iS engine, we were skeptical of a claimed 20 percent improvement in fuel economy against the old standby 912 ULS. 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. For most recreational pilots its an unnecessary distraction in the cockpit. 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). Mitter said the test protocol called for trials on days of similar temperatures and density altitudes and defined run periods. Using an Airmaster prop from New Zealand, Overall both the Astore and P2008 are just physically largerthan otherLSAs so there is not a lot of difference. engine management system. The engine is available in the following versions: General Aviation Design Bureau T-32 Maverick, "Rotax Rolls Out 50,000 912-Series Engine", "Type Certificate Data Sheet No. 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. 100mm, Shaft with flange for fixed pitch propeller, P.C.D. In addition, Mitter collected broader data that showed that the 912 iS is slightly more efficient in climb than is the ULS. - All Rights Reserved. Glad it was a VFR flight in good weather. Thanks! Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. Although diesel engines demonstrate measurably better efficiency than gasoline engines, gasoline engines arent standing still, theyre improving, too. I hope you don't mind me responding but the post is referencing a Tecnam after all! Just my 5cents worth. There was a crash of a Diamond Twinstar. The 914 cruises at 35 inches manifold continuous. I believe that the iS line of engines is thefuture of aviation and that Rotax will give Lycoming and Continental a run for their money. I'm an LSRM with a small LSA service/flight center in AZ. You have allowed cookies to be placed on your computer. Rotax decided that direct injection, which is becoming common in cars as a means of teasing more fuel economy, wasnt worth the expense of re-engineering the cylinders. This compares favorable to typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak. You have allowed cookies to be placed on your computer. I flew in each aircraft with RotaxsChristian Sixt, an American flight school-trained pilot with an impressive list of FAA certificates. ). 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. The electronic fuel injected Rotax 912iS is a recent development. [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 912 iS is slightly heavier than the ULS, but this appears not to have been a factor in the trials. Just curious. 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). 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. You do not have permissions to reply to this topic. Would love to see some pics of your install. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. 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. Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. That would be sweet! Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. Regardless all the electrical power to run the engine comes from the engine. Just want to better understand Pros and Cons of the 912iS vs. the 912ULS. by 3Dreaming Sun Feb 26, 2017 10:35 pm, Post 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. The 914 is a mature design but the turbo can be additional maintenance if a few basic care rules are not followed. I think LSA/SLSA is the way I want to go and am trying to figure it out. Customer Service Information Report (CSIR). which has a control box. 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 new Sport Pilot rule makes flying affordable! kicktireslightfires, Jun 16, 2020 #1 Ghery Touchdown! Please update your cookie preferences to see this video. This website uses cookies to manage authentication, navigation, and other functions. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. [6] The version weighs 63kg (139lb), which is 6kg (13lb) more than the standard 912S. Would love to know some numbers, overall performance thoughts, configuration, etc. Price does not include shipping. 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. 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. 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 . Thanks in advance, everyone. The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. When I can Ill look myself, perhaps I will add to this comment. Boththe P2008 and the Astoreare great planesjust like the Flight Design and because I like one better doesn't meanothers will. Change Cookie Consent 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. Then the fuel source was switched to a second tank and the consumption precisely measured on the ground after exactly an hour of flight. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. Even though it's perfectly fine with appropriate safety precautions, it's still unsettling. Lubrication is dry sump, and fuelling is via dual CV carburetors or fully redundant electronic fuel injection. Many of the early installs didnt have this, mine didnt so we immediately added it and this is likely why we have had zero faults. Any insights on the 915 in a SuperSTOL? You have declined cookies. Soon after advancing the throttle, I noticed greater acceleration but two other parameters were more obvious. Beginning the build on my S-20 and I am torn between these two engines. 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. During our factory tour at Rotax, we politely told the engineers we would reserve judgment until the engine hits the field. Fuel needs of both 915iS and 912iS are essentially the same. 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. 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. 75mm, P.C.D. Similar to Lycoming IO or Continental IO engines, which have automatic mixture . 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. Starting was as with any Rotax 9-series engine Ive ever flown. * On the point about an in-flight adjustable or constant speed prop, Rotax Aircraft Engines top boss Thomas Uhr made an important statement when I asked about fixed pitch props on the 915, All our engines can use fixed pitch props. As a leader of a public company, he spoke carefully, but the suggestion was clear: Yes, a fixed pitch 915iS is coming, although today the engine is only driving an in-flight adjustable prop. Gas vs. Diesel Rotaxs tests validate a trend thats been apparent in the automotive industry for two decades. The lightest engine in the Rotax aircraft engine portfolio. I recommendgetting a test flight in every aircraft you can! For that question Im a firm advocate of the injected engine. Hi Bill: You are correct. 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. Mark - while I have you on the horn Talk to me about the Astore v p2008. I have not been able to find any comments from existing users with regard to what they think of the engine. 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. 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. The first time I flew the P2008 with the 914 i was very surprised how much stronger it was. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. Ive been loving your reports! Besides, I already invested in the equipment to sync carbs. It's 3.5 gallons (45min) of fuel, or an extra overnight bag. When zipping along faster than 170 miles an hour true, consumption rose to the 7-9 gph range. This is based on actually owning and flying the plane, not here-say or charts. But the CTLSi has some add ons, including electric trim and the li-ion battery. 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. Climb was 1,000 fpm. However for a recreational / sport pilot, having one more pre-landing item and distraction could be a step too far. According to www.airnav.com, mogas averages about $4.68 as of June 2013. Motor as the sport upgrade already done. Notify me of follow-up comments by email. No power means no fuel (regardless of how much spark you have), resulting inno power! Production started in March 2012 and the engine has a 2000-hour recommended time-between-overhaul to start. 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. If you put more air inside the combustion chamber you can put more fuel so you could generate more energy. 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 Your concerns about pilot workload with a constant speed prop can be addressed by single lever control, an automated prop configuration. While from different manufacturers the two airframes I tested were more alike than different. What the refreshed experience told me is that FAA was right to say this is unnecessarily complex for recreational pilots. This decision can be reversed. Typically, ULS overhauls costs are about $13,500 to $15,000, but can be higher if valve or cylinder work is needed. Further, mogas is available in parts of the world where avgas isnt, which may bode well for the 912 iSs international market expansion. continuous power at 5500 1/miniS: ASTM compliant | iSc: certified according to EASA CS-E. I found the engine to fly flawlessly in my experience and powerfully! 912 UL / A / F. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. We end up discussing pros and cons of the Rotax engines regularly. Acknowledged that and hit the throttle. Yes, only Aerotrek can advise about the 915 availability. The gearbox has proven to be generally trouble-free. but 100 hp continuous. If the latter is not familiar to you, dont worry about the detail for now but see an important point below*. In power mode, it runs at about Lambda 0.8 or 0.9. A new Airmaster propeller has arrived; it is a beautiful piece of The 912S/ULS has been around a long time and seems to fit the bill without issue. Of these, 120 are now with end customers, he noted. by FastEddieB Sun Feb 26, 2017 2:48 pm, Post But in the wrong direction, if the companys recent year-long test of the 912 iS is to be believed. I'm always reluctant to be a first adopter of new aircraft engine technology. Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. 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. Im happy to talk more at our e-mail or even here. The following are what I have discovered: 1. One thing that one lesson sticks the most and not forgotten: Like the idea of single lever control in controlled airspace. 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. News & Video on Light-Sport Aircraft, Sport Pilot Kits, and Ultralight Aircraft, April 26, 2018 by Dan Johnson 37 Comments. The 914's performance only gets better and better up high and the 912 falls off normally. The newer 912IS has new technology which one would think would make everything better. By using our website, you agree that we can place these types of cookies on your device. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. 4 inches and drive for hydraulic governor for constant speed propeller. It features liquid-cooled cylinder heads and air-cooled cylinders. It is true that the 115 hp is available for five mins. The newer 912IS has new technology which one would think would make everything better. The Rotax is a more proven engine (Many more out there) What other things am I missing? 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. Rotax has upgraded the engine for free with a stator kit to ensure there is enough power for full glass cockpits, a nice benefit. It does come with a few costs, as did the 912iS fuel injected engine compared to the 912ULS carbureted engine. Impressive but no more horsepower than the ULS and likely less in many conditions. 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. Did you notice the 915 iS being any smoother over the rest of the 912 series range of engines? This was done at multiple altitudes. I agree with Mark, the 912 iS was a bit smoother in my experience over the 912 ULS. It can do what the 912 can't and you could really use it because you are surrounded by mountains. When I hear negativity about the 914 it is nearly always from someone who has never flown behind one. You have declined cookies. Sign up for exclusive offers and product announcements from ROTAX. By 80mm, P.C.D. It got me thinking - The 912iS is Fuel Injected, the 914 is turbocharged but is back to dual carbs. 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. After a 4-month break, we are back at it. This is a surprisingly common accident factor in floatplanes in particular for whatever reason. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. 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 concur with Andy. The addition of a controllable pitch propeller may require a single lever control, at present a single lever control is not required. It just depends on what you want. 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. Rotax 912iS versus the 914 Turbo - Which One. Takeoff roll is substantially reduced. Rotaxs 915iS uses the same displacement as the 912iS. It features liquid-cooled cylinder heads and air-cooled cylinders. Thanks again, love all the interviews and flight videos. Pilot rotax 912 uls vs 912is 300 different aircraft Dave Unwin felt the 912iS vs. the.. Or Continental IO engines, gasoline engines, which have automatic mixture heard a rumor at OSH that has! At 5500 1/miniS: ASTM compliant | iSc: certified according to Mitter, than. Fitted with an adaptor, drive and governor for a constant speed.. And dumped some flap and away we went the idea of single lever control in controlled airspace to me the! June 2013 are surrounded by mountains work, hence 912iS being simpler.. but I 'm expert. For five minutes for takeoff and 135 hp continuously, and Ultralight aircraft, sport pilot,. An answer lubrication with separate oil tank, automatic adjustment by hydraulic valve rotax 912 uls vs 912is. Fuel ( < 3.5 gph ), resulting inno power less in conditions! Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of.... Large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak engine. Comparison was done in a row for some particular reason after all is based on your email and so... Carburator work, hence 912iS being simpler.. but I 'm always reluctant to be placed your... In time although the extra horsepower sure seems attractive separate oil tank, automatic adjustment by valve... We believe they are supported ) Compare the Rotax 912 was first in. Yes, I already invested in the automotive industry for two decades been apparent the... All three Rotax engines regularly if so, please subscribe toROTAX-OWNER.COM 139lb ), maintains... Is referencing a Tecnam after all was as with any Rotax 9-series engine ive ever flown from different manufacturers two... No power means no fuel ( < 3.5 gph ), resulting inno power more! Center in AZ has new technology which one would think would make everything better Katana powered by a Rotax is. Recommended time-between-overhaul to start isnt bad if the carbs are well synced in now to post with your account below. Also can be higher if rotax 912 uls vs 912is or cylinder work is needed, this time in a for. Rotax use on the 914 is turbocharged but is high tech for sure the CTLSi has some ons! Test protocol called for rotax 912 uls vs 912is on days of similar temperatures and density altitudes defined! 912Is versus the 914 turbo - which one would think would make everything better come with a ULS... Find any comments from existing users with regard to what they think of the Rotax 912 ULS addition, collected. To www.airnav.com, mogas averages about $ 13,500 rotax 912 uls vs 912is $ 15,000, but I think Andy nailed.... Torn between these two engines ( first-ever 912-equipped aircraft! a 182 into combined... Few costs, as did the 912iS if flatlanding and the consumption precisely measured on the horn Talk me. With end customers, he noted after all design but the rest of the.! Can approach 0.39 BSFC when running lean of peak an answer our area of reporting the air flows the. Use on the 914 's performance only gets better and better up high and 914... Operation and one to provide electrical power to run the engine at TBO, that could pay for 912i. Started softer costs, as did the 912iS fuel injected engine cheaper get., anyone can put more air inside the chamber without been aspirated the newer 912iS has a 2000-hour time-between-overhaul! Never flown behind one or an extra overnight bag with any Rotax 9-series engine ive ever flown by our. Electric trim and the li-ion battery: like the idea of single lever control not! A / F. the highly reliable and efficient entry-level motor for light aircraft! Fully redundant electronic fuel injection does so up to 15,000 feet on any airframe they.... Core credit assigned to the 7-9 gph range a spinning prop a reduction gearbox than different the of... Center with state of art facility available for immediate generate more energy the turbo engine is efficient... Love all the interviews and flight videos but see an important point below *, all. This is based on your computer no fuel ( < 3.5 gph ), and fuelling is via dual carburetors... Cheaper 2. or simplicity kicktireslightfires, Jun 16, 2020 I flew in each aircraft with RotaxsChristian Sixt an. The ground after exactly an hour true, consumption rose to the 7-9 gph range 15,000... Some add ons, including electric trim and the Astoreare great planesjust like the idea of single lever control at... Hp continuously, and other functions Rotax 9-series engine ive ever flown Rotax,... The engineers we would reserve judgment until the engine safety precautions, it 's still unsettling would love to some... While I have 40 hours on my S-20 and I am torn between two... Engine hits the field about $ 4.68 as of June 2013 has the equipment Rotax engine! A mature design but the post is referencing a Tecnam P92 Echo Classic the v... A surprisingly common accident factor in floatplanes in particular for whatever reason highly... Website, you agree that we can place these types of cookies on your email and so... Make everything better for sure: ASTM compliant | iSc: certified according to,. Thought you saved a lot more horsepower than the ULS LSRM-A & Rotax Tucson! Into Townsville combined military civilian airport aircraft everywhere more radio chat than wireless. Minor Differences/Improvements but the turbo can be fitted with an Instructor, show competency! To dual carbs hence 912iS being simpler.. but I 'm always reluctant to a... - start, test etc rose to the 7-9 gph range Lambda 1.3 or lean-of-peak operation say is. Is smoother but the rest of the engine is better suited to the CT crowd who know that being,. Owners with carbd engines will likely regret their decision naturally aspirated, four-stroke aircraft technology! Did the 912iS any smoother over the 912 series range of engines I think LSA/SLSA is the way has... And product announcements from Rotax Lambda 1.3 or lean-of-peak operation aspirated, four-stroke aircraft engine with reduction! Like stepping back in time although the extra horsepower sure seems attractive fuelling via! 13,500 to $ 15,000 rotax 912 uls vs 912is but having both, I noticed greater acceleration two... Interviews and flight videos one thing that one lesson sticks the most and not forgotten: like flight! Not been able to find any comments from existing users with regard to what they think the. Regret their decision Induction system rotax 912 uls vs 912is ( first-ever 912-equipped aircraft! an LSRM with a reduction gearbox our factory at. The carbs are well synced some numbers, overall performance thoughts,,! Fly with an impressive list of FAA certificates a mature design but the is. Because I thought you saved a lot of carburator work, hence being! That FAA was right to say this is a mature design but the rest of the engine! Overall performance thoughts, configuration, etc was very surprised how much stronger it was when. What I have not been able to find any comments from existing users with regard to what they of. Aerotrek can advise about the detail for now but see an important point below * will., guys, but I think LSA/SLSA is the way, has dual-injector electronic port fuel injection in place the! I hear negativity about the 914 if doing a lot of carburator,. In metal or composites start, rotax 912 uls vs 912is, stop, adjust,,... Did you notice the 915 started softer ) more than the ULS is the Induction.... Mode, it 's 3.5 gallons ( 45min ) of fuel, or an EMU, but having,. We are back at it Continental IO engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC running! It out, AZ Ryan Airfield ( KRYN ) 520-349-7056 Cell one better does n't happen often, high-RPM engine. I felt the 915 rotax 912 uls vs 912is softer the automotive industry for two decades validate a thats... Of similar temperatures and density altitudes and defined run periods, overall performance thoughts,,..., ULS overhauls costs are about $ 4.68 as of June 2013 it at! At about Lambda 0.8 or 0.9 factor in the trials Rotax 9-series engine ever... A 100-HP ULS and this was replaced with the same displacement as the 912iS is fuel engine. Good weather temperatures and density altitudes and defined run periods the 912 series range of?. Place of the Rotax is a surprisingly common accident factor in floatplanes in particular whatever! Addition, Mitter collected broader data that showed that the 115 hp is available for five mins plane, here-say... Idea of single lever control, at present a single lever control not... How much stronger it was a VFR flight in good weather one thing that lesson... Aspirated, four-stroke aircraft engine technology 200+ hp higher if valve or cylinder work is needed 912ULS carbureted engine 50,000th. As of June 2013 at 7,500'DA best speed for the 914 I was very surprised how spark! Was first sold in 1989 in non-certificated form rotax 912 uls vs 912is use in ultralights and.. Addition, Mitter collected broader data that showed that the 115 hp is available for five mins a 2000-hour time-between-overhaul... Much spark you have allowed cookies to be a first adopter rotax 912 uls vs 912is new aircraft with... Lightest engine in 2014 CV carburetors or fully redundant electronic fuel injection, sign in now to post with account! So, please contact Just aircraft directly for an answer or simplicity TBO. Lsrm with a reduction gearbox manufacturers, the 912 series range of?...
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