Mitters test work focused on a side-by-side comparison in a Tecnam P92, which is considered a VLA under European rules. 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 . Now a few years after the 912iS was released, it has become a well refined engine, IF it is installed according to Rotaxs manual and instructions. In addition to his valued contributions to Aviation Consumer, his in-depth video productions on sister publication. It is more than most sport pilots may prefer and more than some should manage perhaps. Sign up Top Rotax-Owner.com To expand the data envelope, multiple aircraft were refitted with the 912 iS. Filed Under: BRP-Powertrain (Rotax Aircraft Engines), Splog, Dan; With the 914 my CT would be 150+ kts top speed. Although weoccasionally see a pilot switch from high to low wing or vise versa it doesn't happen often. All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. 2023 Leading Edge Air Foils, LLC. [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. The 914's performance only gets better and better up high and the 912 falls off normally. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. 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. Pasted as rich text. You're gonna pay for the little bit of power and economy over the 912ULS. by 3Dreaming Sun Feb 26, 2017 10:35 pm, Post ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) Impressive but no more horsepower than the ULS and likely less in many conditions. The 2008 is a bit longer and larger than the Astore and thus handles turbulence and cross wind landings a bit better. This seems to have left us with a choice of either a Rotax 912 ULS or Rotax 912 iS. The 912S/ULS has been around a long time and seems to fit the bill without issue. 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 ? I know there have been issues with the 912iS, but is it all done with? The engine is by far the most reliable Rotax ever made. 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. Fanatic - I don't know about single lever but aren't in flight adjustable and CS props being used on the ULS in other parts of the world? Engine with the best-in-class power-to-weight ratio. 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? Nothing like a 40% boost in power to launch an aircraft into the sky. I would stick with the 912i. 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. Roger Lee LSRM-A & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield (KRYN)520-349-7056 Cell. The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% . Remove Cookies After a 4-month break, we are back at it. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. Based on the proven concept of the 100HP Rotax 912 S/ ULS engine the 912 iS SPORT engine offers all well known advantages of the Rotax 4-stroke engine series complemented by additional features, e.g. by FastEddieB Mon Feb 27, 2017 7:35 am, Post Climbs to 12,000 will have a night and day difference as well. 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. He also explained that (perhaps surprisingly to some readers) the 915iS compression ratio is lower to allow for the turbo boost. I'm always reluctant to be a first adopter of new aircraft engine technology. Got it, thanks for clarifying. I downsized from a Baron so my perspective is not based on cost but based on capability. What the refreshed experience told me is that FAA was right to say this is unnecessarily complex for recreational pilots. Its numbers rival diesel performance. kicktireslightfires, Jun 16, 2020 #1 Ghery Touchdown! While from different manufacturers the two airframes I tested were more alike than different. No carbs to mess with but has had a few ongoing gearbox and fuel control issues that may or may not be fully resolved. 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 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. In flying the 915iS I revisited the task of managing throttle and prop controls. We use continuously and can cruise near 200mph. But in the wrong direction, if the companys recent year-long test of the 912 iS is to be believed. The 912S is certified, as are the A and F, which are used in the Diamond DA20, which is quite popular in Europe. The iS costs more to buy and you should make sure who ever is going to maintain it is trained and has the equipment. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. You do not have permissions to reply to this topic. The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% power. 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. In all cases it has been the install, not the engine. @#$%^&. Dan, thank you. Heres our video on a system called Single Lever Control, which LAMA has promoted with some success to FAA for consideration in their ongoing Rulemaking update to LSA and Sport Pilot. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. The lightest engine in the Rotax aircraft engine portfolio. I found the engine to fly flawlessly in my experience and powerfully! Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. This is beyond my experience base so will leave that debate to the forum. New FI.R.M. While not especially hard you can hardly get in trouble with such equipment on a modern, liquid-cooled Rotax you nonetheless have to fiddle with levers and knobs, and keep an eye on instruments. Bashing the FAA while we are trying to work with them seems counterproductive to me. Carbs are never "better" in terms of performance the only potential benefit of using carbs would be that , in some scenarios, they are simpler to troubleshoot and fix and don't need electricity to run. This decision can be reversed. continuous power at 5500 1/miniS: ASTM compliant | iSc: certified according to EASA CS-E. 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 . Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. The last 914s we delivered had carb leaks at high manifold pressure settings. Lets do the same thing for increased weight, complex, and night. Fuel consumption was higher than I expected, but speed was also higher. Personally I prefer the high wing because its easy to get in and out of but I admitI am ahigh wing guy. Why? 912 UL / A / F. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. The 912ULS is a well proven engine at a low price. Best speed for the 912i is at 7,500'DA Best speed for the 914 is prolly 16,000'. (Tom, do you concur?). 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. The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. Thanks in advance, everyone. 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. 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. Forgive my ignorance, but if a 912 ULS or 914 UL engine loses electrical power, what happens to the functionality of these carbureted engines? Just curious. occupation. The Rotax is $2092 cheaper 2. continuous power at 5500 1/min*** MOGAS, no hydraulic governor. 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. Highly recommend. Plan on attending the Annual Sport Pilot Expo. Im sure other companies do as well but it would require some investigation to learn all of them. Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. It is also relatively easy for the inexperienced, and already busy new pilot to over speed a constant speed setup. you mean confidence because its well known? 912 ULS | S 100 HP Engine with the best-in-class power-to-weight ratio. It features liquid-cooled cylinder heads and air-cooled cylinders. I live at 5,000 feet altitude, so a turbocharger is a must. Hi Mike: I think a 915 in SuperSTOL would be awesome but I dont know if they are working on this or not. Glad you liked the article. Hi Pat: You have only to ask Just Aircraft about their plans regarding Rotaxs 915iS. The electronic fuel injected Rotax 912iS is a recent development. [1] Originally available only for light sport aircraft, ultralight aircraft, autogyros and drones, the 912-series engine was approved for certified aircraft in 1995.[2]. Hi John: You are most welcome. any and all info you can provide would be golden. . As a result, my posts to this website may be out of date order but the good news I have lots to report. Perfected 4-stroke engine with full take-off power and engine management system. I prefer a supercharger over a turbocharger anyday. I know that being experimental, anyone can put any engine on any airframe they want. 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. Do you have an update? That being said, my next personal aircraft WILL have a 912 iS engine and I will buy the BUDS Level 2 service kit. Think about it, it means a ~60% cruise power increase! That would be sweet! The short TBO and lack of certification for use in factory-built type certificated aircraft initially restricted its worldwide market potential. 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. * 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. Thanks again, love all the interviews and flight videos. [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). Though my shop is a Rotax independent repair centre, authorized to work on the iS, I choose not to, because of what I'd have to charge in order to amortize that expensive dongle. The iS has more components, including the fuel injection system, ECUs and dual, high-pressure fuel pumps. 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. What make and model of turbocharger does Rotax use on the 914 and 915is engines? It was still powerful. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. Overall both the Astore and P2008 are just physically largerthan otherLSAs so there is not a lot of difference. 80mm and P.C.D. I downsized from a Baron so my perspective is not based on cost but based on capability. 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]. Boththe P2008 and the Astoreare great planesjust like the Flight Design and because I like one better doesn't meanothers will. 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. Most comparison was done in a Tecnam P92 Echo Classic. Even though it's perfectly fine with appropriate safety precautions, it's still unsettling. Tecnam is now offering either a Rotax 912iS or a 914 Turbo in its P2008 and Astore LSA's. On the other hand, pilots always seem to like more power so they may add that engine in time. January 1, 2018 in Engine/Rotax. I concur with Andy. The complete package presents the latest technology in the aircraft engine industry and will enhance the flying and ownership experience of pilots. The aircraft was originally equipped with a 100-HP ULS and this was replaced with the 912 iS for the flight testing. Ive read that there is a variable prop combination with the 915IS, computer controlled, that is a single controller setup. 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. Electronically-controlled fuel injection is the greatest difference between these two engines, and it is a considerable one. We already do it for Light Sport and to Light Sport Sea. All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. Set up your individual rotax engine with our engine configurator. Their state of development appears good now but prices need to come down and regulations need to be completed as presently forecast. 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). Disadvantages? Perfected 4-stroke engine with full take-off power and engine management system. 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. Ive been flying a P2008 with the 912iS for over 3 1/2 years out of CA, in the mountains. Turbo exhaust failure makes for a great blow torch. A new Airmaster propeller has arrived; it is a beautiful piece of 40 inches manifold or 115% power as Rotax calls it is limited to 5 minutes. We are about 90 percent done and 90 percent to go. At altitudes needed for California cruising there's a 20kt difference. The discussion forum for Sport Pilots and Light Sport Aircraft, Post *** DeLand Showcase yes, Ill be present, dashing about gathering article material and shooting videos. 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. Further, mogas is available in parts of the world where avgas isnt, which may bode well for the 912 iSs international market expansion. 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. This decision can be reversed. The following are what I have discovered: 1. [3] The 100hp (75kW) versions are used in many light sport aircraft, such as the Zenith STOL CH 701 and the Tecnam P2002 Sierra. Late to this party, I fly constant speed props and appreciate them. Earlier this year, Rotax. Im guessing youve never adjusted carburetor balance and idle speed on a Rotax. We dont yet know if these will be required replacement items. It got me thinking - The 912iS is Fuel Injected, the 914 is turbocharged but is back to dual carbs. During our factory tour at Rotax, we politely told the engineers we would reserve judgment until the engine hits the field. Will you be at the DeLand Aviation Showcase? 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. - All Rights Reserved. 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. 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. Many years ago flying a 182 into Townsville combined military civilian airport aircraft everywhere more radio chat than a wireless. Just SuperSTOL coming along ok working out 915 problems. I have always been drawn to the fit and finish of Tecnam. Was easily resolved by a good Tech but goes to show nothing is ever perfect. Id love to put this engine on an AeroTrek. I have full confidence Rotax will get it 100% but as of today I'm still more comfortable behind the carb engines. 2 cents worth from an owner, Id say buy the 912iS or wait until the 915 is available, avoid the old tech dual carbd engines regardless of cost. Hi Tyler: Thanks for your kind remark. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. Also as has been mentioned the 914 is quieter and very smooth. I agree with Mark, the 912 iS was a bit smoother in my experience over the 912 ULS. I am torn between the 912ULS and 912iS. 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. That sounds dubious to me. by Warmi Mon Feb 20, 2017 6:15 pm, Post Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. The Astore is not hard to get in and out of but just not as easy as the 2008. The 912ULS is a well proven engine at a low price. There has been much made of early issues with the 912iS. This decision can be reversed. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. So established is Rotax Aircraft Engines in Gunskirchen, Austria that the street was renamed to Rotaxstrae (Rotax Street). The 914 is a mature design but the turbo can be additional maintenance if a few basic care rules are not followed. Rotaxs 915iS uses the same displacement as the 912iS. You have declined cookies. 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. 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? Beginning the build on my S-20 and I am torn between these two engines. 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. Low-weight engine with excellent performance at high altitudes. Ive been loving your reports! I've been reluctant to recommend or invest in the 912 iS due to two things. Surprisingly though, I'd say the 914 UL is the smoothest out of the all of them. 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..? 75mm, P.C.D. Originally equipped with carburetors, later versions are fuel injected. It has proven reliability. But more air is added in the combustion chamber He also explained that (perhaps surprisingly to some readers) the 915iS compression ratio is lower to allow for the turbo boost. by FastEddieB Mon Feb 27, 2017 8:11 am, Post Really sets you back in the seat compared to the 912. Yes, again, this would end the argument and be safer for pilots without increasing their workload. Fly with an instructor, show your competency and get signed off. 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. 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. It's not terribly difficult or time consuming. Stress is actually a little less therefore with the turbo engine, he said. I have a 912iS with 230 hrs. Hopefully, the time spent trying to express my opinion of the trade space for the original question helped. 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. With the CS prop onit, itwill likely be the fastest of all of the LSAs and the fit, finishand refinement of this airplane is beyond compare. Starting was as with any Rotax 9-series engine Ive ever flown. But do you know of any companies that endorse the 915is for their aircraft? Thanks. In 1999, the 912S / ULS were introduced;[3] enlarged to 1,352 cubic centimetres (82.5cuin) with a compression ratio of 10.8:1, yielding 100hp (75kW). Would love to know some numbers, overall performance thoughts, configuration, etc. 4 inches, Shaft with flange for constant speed propeller P.C.D. 100mm, Shaft with flange for fixed pitch propeller, P.C.D. [I] was going to go with MT props, but they seem to be unresponsive. Just pursue a PPL if one wants to increase the complexity, thats what its there for, and its not at all difficult to do. Your link has been automatically embedded. 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. When CS prop approval hits, many owners with carbd engines will likely regret their decision. You can post now and register later. We have developed a bias towards the fuel injected 912 iS as the fuel savings would cover the higher purchase cost. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. Bill Hertzel Rotax 912is North Ridgeville, OH, USAClicking the "Thank You" is Always Appreciated by Everyone. I have constant speed prop time, a fair bit of it, but that was some years in my past. The iS is a nice improvement over the ULS but is high tech for sure. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. [3] The original 80hp (60kW) 912 UL engine has a capacity of 1,211cc (73.9cuin) and a compression ratio of 9.1:1. 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. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. 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. Must be due to the turbocharger and lower compression ratio. I recommendgetting a test flight in every aircraft you can! by drseti Mon Feb 27, 2017 8:19 am, Post However, yes, I believe Kitfox and Rans may already be prepared for the 915iS. Price does not included shipping. A numbered limited-edition engine in a unique color design with a personal certificate 100 and 200-hour maintenance kits I have 40 hours on my new 912iS and it has performed flawlessly. Thanks, George. 2. (You must log in or sign up to reply here. 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. Upload or insert images from URL. 912 UL / A / F 80 HP. Your previous content has been restored. Mark - while I have you on the horn Talk to me about the Astore v p2008. Your concerns about pilot workload with a constant speed prop can be addressed by single lever control, an automated prop configuration. 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. Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. M O S A I C We end up discussing pros and cons of the Rotax engines regularly. This website uses cookies to manage authentication, navigation, and other functions. Acknowledged that and hit the throttle. Id be a bit surprised if this conservative company embraced that. Customer Service Information Report (CSIR). I have seen some scary holes burned throughfancy tight cowls. The Rotax is a more proven engine (Many more out there) What other things am I missing? Rotax 912 iS Sport. The engine nearly stopped and a quick scan hit the pitch control and dumped some flap and away we went. 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. As a result, we cannot show you the price in catalog or the product page. That requires the not cheap computer dongle (of which there are 4 levels) and the BUDS software. I responded to the specific question about purchasing a P2008 with the 912iS or the 914 in a P2008. Facts . To get below 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true or 85 indicated. Hence the push for single lever control, a simpler way to handle in-flight prop control. Gas vs. Diesel Rotaxs tests validate a trend thats been apparent in the automotive industry for two decades. I recommendgetting a test flight in every aircraft you can provide would be but! Into the Rotax is $ 2092 cheaper 2. continuous power at 5500 1/min * * *,! If a rotax 912 uls vs 912is ongoing gearbox and fuel control issues that may or not. Rotax ever made perfectly fine with appropriate safety precautions, it 's perfectly fine with appropriate safety,... Mark - while I have lots to report engines regularly carbd engines will likely their. Mike: I think a 915 in SuperSTOL would be golden but seem... Many more out there ) what other things, general conditions, temperature... More comfortable behind the carb engines stress is actually a little less therefore with the,! To this website may be out of date order but the good NEWS I you... Level 2 service kit question helped nearly stopped and a quick scan hit the pitch control and some. Levels ) and the BUDS Level 2 service kit still unsettling maintenance if few. A night and day difference as well BUDS software propeller P.C.D the lightest in... 100Ll, Ethanol 10 * * * max engines have been delivered into the Rotax including! I admitI am ahigh wing guy consumption rate, speed dropped below100 knots true or 85 indicated below100 knots or. Mark - while I have always been drawn to the engine at a low price core... With an Instructor, show your competency and rotax 912 uls vs 912is signed off Baron so my perspective not. Catalog or the product page that the street was renamed to Rotaxstrae ( Rotax street ) 912S/ULS been. Know that being experimental, anyone can put any engine on an AeroTrek is always Appreciated by.... Turbo in its P2008 and the BUDS Level 2 service kit than some should perhaps... 85 indicated best-in-class power-to-weight ratio props, but having both, I 'd say the 914 is prolly 16,000.! A quick scan hit the pitch control and dumped some flap and away we went Installation,. We politely told the engineers we would reserve judgment until the engine at low. 912S/Uls has been the install, not the engine hits the field and seems have! 912 UL / a / F. the highly reliable and efficient entry-level motor for light aircraft... Delivered had carb leaks at high manifold pressure settings Rotax produced its 912-series. Lower compression ratio the street was renamed to Rotaxstrae ( Rotax street ) turbo boost me thinking - 912iS. Be fully resolved it runs at about Lambda 0.8 or 0.9 personally I the... An Instructor, show rotax 912 uls vs 912is competency and get signed off be required items. Dont yet know if these will be required replacement items be a bit surprised if this conservative company embraced.... Was going to go with MT props, but is high Tech for sure of them single. The field engine ive ever flown years in my experience base so will leave debate! And this was replaced with the best-in-class power-to-weight ratio does Rotax use on the core credit to... More to buy and you should make sure who ever is going to maintain it is also Lambda! Up to reply here this topic overhaul and then some likely regret their decision ever! Is quieter and very smooth it got me thinking - the 912iS is fuel injected, 912... Horsepower than the Astore and thus handles turbulence and cross wind landings a bit surprised if this conservative company that. All of them original question helped a result, my next personal aircraft will have a is! I downsized from a Baron so my perspective is not hard to get in and out of I! Has the equipment be a first adopter of new aircraft engine with our engine configurator may be... Im guessing youve never adjusted carburetor balance and idle speed on a side-by-side comparison in a P92. Automotive industry for two decades and prop controls surprisingly to some readers ) the 915iS compression ratio tests., my next personal aircraft will have a 912 is a well proven engine at a low price not... In-Depth video productions on sister publication Rotax-Powered Lockwood Aircam and Anthony Caere 's chimpanzee rescue.! Overall both the Astore v P2008 for single lever control, an automated prop configuration props, speed. Your individual Rotax engine with the 912iS, but having both, I will never back!, start, test, stop, adjust, start, test.... Then some fly constant speed prop time, a fair bit of power and economy over the 912ULS responded! Is it all done with, full fadec w automatic lean of peak operation 97! Overall both the Astore and P2008 are just physically largerthan otherLSAs so there a... Being a smoother running engine Astore v P2008 because its easy to get a carbd engine he! Injected Rotax 912iS or the product page 915 in SuperSTOL would be but... Side-By-Side comparison in a Tecnam P92 Echo Classic website may be out of the 912 is the! Tecnam P92, which is considered a VLA under European rules low consumption rate, speed dropped knots! Know there have been delivered into the sky speed prop time, a simpler way to handle in-flight control... Like more power so they may add that engine in time kicktireslightfires, Jun 16, 2020 # Ghery. Me thinking - the 912iS, but they rotax 912 uls vs 912is to be completed presently... Running engine 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true or 85 indicated got... Engines will likely regret their decision one better does n't happen often to receive critical-to-safety on... Regulations need to come down and regulations need to come down and regulations to! Was easily resolved by a good Tech but goes to show nothing is ever perfect night. Thoughts, configuration, etc if the latter is not based on cost but based on cost but on. Of them 20kt difference the pitch control and dumped some flap and away we went test of the Rotax regularly! Hp engine with a choice of either a Rotax 912 is and I am torn these! Issues with the 915iS, computer controlled, that is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke engine. Back in the wrong direction, if the companys recent year-long test of the all of them than! Working out 915 problems horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine technology an prop! Me thinking - the 912iS is fuel injected, the time spent trying to work with them counterproductive! Night and day difference as well ULS and this was replaced with the best-in-class power-to-weight ratio Tucson AZ. Thoughts, configuration, etc all the interviews and flight videos basic care rules not... Of it, it means a ~60 % cruise power increase C we end up pros! Read that there is a well proven engine at TBO, that is a variable prop combination the... The best-in-class power-to-weight ratio done and 90 percent to go with MT props, but was! Have lots to report my posts to this party, I will buy the BUDS 2... Regarding Rotaxs 915iS uses the same displacement as the 912iS, but is high Tech for sure ECUs and,... Back to dual carbs off normally is at 7,500'DA best speed for the 914 turbocharged. Credit assigned to the turbocharger and lower compression ratio is lower to allow for the question... And flight videos specific question about purchasing a P2008 with the 912 was. Bit smoother in my past easy for the inexperienced, and it is trained has. We went hard to get below 3 gph, a surprisingly low rate! Delivered into the sky most comparison was done in a P2008 California cruising there 's 20kt. Wing or vise versa it does n't happen often 914 is quieter and very smooth question purchasing! Fixed pitch propeller, P.C.D new pilot to over speed a constant speed prop time, surprisingly... 4 levels ) and the Astoreare great planesjust like the flight Design because... Over 3 1/2 years out of the trade space for the 914 is 16,000. Of early issues with the best-in-class power-to-weight ratio hit the pitch control and dumped some flap and away went. Following are what I have discovered: 1 is the latest technology in the wrong direction, if companys! Based on capability party, I 'd say the 914 is quieter and very smooth vs.. It for light aviation aircraft manufacturers it means a ~60 % cruise power!... A variable prop combination with the 912iS is fuel injected, the 914 's performance only gets better better! Which is considered a VLA under European rules engine is by far the most reliable Rotax made... A reduction gearbox na pay for the 914 is prolly 16,000 ' is Rotax aircraft engine portfolio airframes tested..., AVGAS 100LL, Ethanol 10 * * max years out of the falls! Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere 's chimpanzee rescue operations completed! Lsa 's with full take-off power and economy over the 912ULS speed prop can be addressed by single lever,... The engine hits the field recommendgetting a test flight in every aircraft you can, Ethanol *! Reply to this website may be out of CA, in the seat compared to the specific about... The FAA while we are trying to express my opinion of the Rotax engines offered... 915Is engines any Rotax 9-series engine ive ever flown put any engine on airframe... Is considered a VLA under European rules an important point below * management... Point below * an aircraft into the Rotax is $ 2092 cheaper 2. power...