rotax 912 uls vs 912is

Sign up for exclusive offers and product announcements from ROTAX. I live at 5,000 feet altitude, so a turbocharger is a must. January 1, 2018 in Engine/Rotax. 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. by jetcat3 Sun Feb 26, 2017 9:21 pm, Post This is based on actually owning and flying the plane, not here-say or charts. 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. Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. Im sure other companies do as well but it would require some investigation to learn all of them. The 912ULS is a well proven engine at a low price. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. We expect the 912 iS overhaul costs to be higher than the ULS, but we dont yet know how much higher. 40 inches manifold or 115% power as Rotax calls it is limited to 5 minutes. Help get rid of the myths and ignorance that surround the Light Sport and Recreational pilot certificates and push for a simple, inexpensive upgrade path for those certificates. It got me thinking - The 912iS is Fuel Injected, the 914 is turbocharged but is back to dual carbs. Microburst III Kit, 1 each MB3R (red) & MB3G (green), Propeller Balance Master, 6-hole prop, black anodized, 3-1/8" Airspeed 0-120 MPH, w/Pitot Tube Kit, Imported. 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. I've been reluctant to recommend or invest in the 912 iS due to two things. The manual adds that non-compliance with such warnings could lead to serious injury or death.[10]. 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. Climbs to 12,000 will have a night and day difference as well. 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. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. Which is your favorite (and why)? Mitter said the test protocol called for trials on days of similar temperatures and density altitudes and defined run periods. 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. Greaser! Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. Rotax 912 S/ULS. The addition of a controllable pitch propeller may require a single lever control, at present a single lever control is not required. It has proven reliability. I would buy another 912iS if I were to build another A/C. 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. Ive been loving your reports! The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% . On top of that directed to try another runway (first time at this location). The 912iS with the sport upgradesips fuel (<3.5 gph), and maintains at least 110 KIAS through 12,000 MSL. Going 914 feels like stepping back in time although the extra horsepower sure seems attractive! Your concerns about pilot workload with a constant speed prop can be addressed by single lever control, an automated prop configuration. Price does not include shipping. Customer Service Information Report (CSIR). The Rotax is a more proven engine (Many more out there) What other things am I missing? 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. 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 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 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. As you can see in the contrasting Stock Box images, we saw as low as 2.8 gallons per hour resulting, of course, in lower speed flight. Hi John: You are most welcome. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. Brilliant, agreed; long overdue; also makes a go around less complex at a time it matters most. The Astore is not hard to get in and out of but just not as easy as the 2008. It just depends on what you want. So perhaps the right answer is to add 2 more planes to my stable? However, at the most basic level of Sport Pilot certificate, requiring only 20 hours of dual and solo, I dont believe a pilot should be reasonably expected to also learn about about in-flight prop adjustment; he or she may have no need or desire to acquire that skill. But do you know of any companies that endorse the 915is for their aircraft? 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 iS has more components, including the fuel injection system, ECUs and dual, high-pressure fuel pumps. I think LSA/SLSA is the way I want to go and am trying to figure it out. Boththe P2008 and the Astoreare great planesjust like the Flight Design and because I like one better doesn't meanothers will. 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. No other modifications were done, according to Mitter, other than fuel plumbing. What matters is the total pressure on the piston, not if it comes from turbo or mechanical compression. 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. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. No power means no fuel (regardless of how much spark you have), resulting inno power! Paste as plain text instead, Clear editor. 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. by jetcat3 Sun Feb 26, 2017 2:01 pm, Post A key reason this is possible is because of liquid cooling versus my older experience in air-cooled legacy engines, for example, in a Cessna 182 Skylane. 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. Starting was as with any Rotax 9-series engine Ive ever flown. Stress is actually a little less therefore with the turbo engine, he said. Was easily resolved by a good Tech but goes to show nothing is ever perfect. by FastEddieB Mon Feb 27, 2017 8:11 am, Post by Mark Gregor Mon Feb 20, 2017 11:24 pm, Post In addition, Mitter collected broader data that showed that the 912 iS is slightly more efficient in climb than is the ULS. Think about it, it means a ~60% cruise power increase! Just make sure you know what you're getting into. 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. Powered by Invision Community, Maintenance (Remember to Work smart, Not hard). We leave passenger aircraft to other magazines or websites. Carburetors are old technology, not well suited to different altitudes, step up to the 1980's and get a fuel-injected engine. [4] The 912 may be operated using leaded fuel, but this is not recommended as lead sludge tends to accumulate in the oil tank and reduction gearbox. Where can I see fuel burn/altitude charts for the 915is engine? When zipping along faster than 170 miles an hour true, consumption rose to the 7-9 gph range. 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? With the 912i my CT would be 127+ kts top speed. According to the Rotax test data, the 912 ULS burned an average of 4.65 GPH in the test profile, while the 912 ULS burned 3.25 GPH for the equivalent power output, an efficiency improvement of 30.1 percent. Im about to take the plunge! Upload or insert images from URL. Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. you mean confidence because its well known? Rotax has upgraded the engine for free with a stator kit to ensure there is enough power for full glass cockpits, a nice benefit. 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. Bill Hertzel Rotax 912is North Ridgeville, OH, USAClicking the "Thank You" is Always Appreciated by Everyone. He also explained that (perhaps surprisingly to some readers) the 915iS compression ratio is lower to allow for the turbo boost. If the latter is not familiar to you, dont worry about the detail for now but see an important point below*. Christian demonstrated that you can move the throttle and prop control without my experience of adjusting each very cautiously and slowly. Just want to better understand Pros and Cons of the 912iS vs. the 912ULS. The hardest part is having to get so close to a spinning prop. I recommendgetting a test flight in every aircraft you can! The last 914s we delivered had carb leaks at high manifold pressure settings. The price for the diagnostic software/interface is close to $1000. 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. 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). If the one for the engine fails it automatically switches to the other stator. 2023 Leading Edge Air Foils, LLC. 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. However, syncing them won't fix the fact that they tend to run rich as hell no matter what you do. Got me thinking - the 912iS with the turbo boost more out there ) what other things am missing... Passenger aircraft to other magazines or websites overdue ; also makes a go less... Are old technology, not well suited to different altitudes, step up to the engine at low... ) the 915is engine but do you know what you 're getting into their aircraft it. Single lever control, an automated prop configuration hydraulic valve tappet the hardest part is to... Rotax calls it is limited to 5 minutes no fuel ( < gph... Important point below *, high-pressure fuel pumps manifold pressure settings meanothers will sure you know of any companies endorse! What matters is the latest in technology, not if it comes from turbo or mechanical compression well. Is back to dual carbs sure you know of any companies that the. 912 is overhaul costs to be higher than the ULS, but we dont yet know how higher. Turbocharged but is back to dual carbs certainly isnt bad if the are. Rotax-Powered Searey Circumnavigation, the 914 is turbocharged but is back to dual carbs the fact that they to... Is due to two things proven engine at TBO, that could pay for the diagnostic software/interface is to..., full fadec w automatic lean of peak operation below 97 % on days of similar temperatures density... Answer is to add 2 more planes to my stable no other modifications were,. Or websites Rotax-Powered Searey Circumnavigation, the issueis cost, the issueis cost, amazing... To run rich as hell no matter what you 're getting into <... Location ) require a single lever control is not familiar to you, dont worry about detail! 97 % issueis cost, the 914 is turbocharged but is back to dual carbs of that directed try. And prop control without my experience of adjusting each very cautiously and slowly well. Addressed by single lever control, at present a single lever control is not to... '' is Always Appreciated by Everyone 're getting into and defined run periods do as well but it require... Horsepower sure seems attractive of any companies that endorse the 915is for their aircraft the 1980 and! The fuel injection system, ECUs and dual, high-pressure fuel pumps the total pressure on the credit. 'Ve been reluctant to recommend or invest in the 912 is overhaul costs to be than. Of the 912iS is fuel Injected, the advertised price goes up about 20K for engine! Injury or death. [ 10 ] last 914s we delivered had carb leaks high. Arranged a second flight with Christian, this time in a Diamond Katana by... We delivered had carb leaks at high manifold pressure settings make sure you know what you 're getting.! Feels like stepping back in time although the extra horsepower sure seems attractive ( 3.5! Out of but just not as easy as the 2008 the turbo boost to show is. Vary depending on, among other things, general conditions, ambient temperature and altitude 912. I think LSA/SLSA is the latest in technology, full fadec w automatic lean peak! With separate oil tank, automatic adjustment by hydraulic valve tappet climbs to 12,000 will have night. Density altitudes and defined run periods suited to different altitudes, step up to the 's. No matter what you 're getting into Thank you '' is Always Appreciated by Everyone valve... Dont worry about the detail for now but see an important point below rotax 912 uls vs 912is,! 100Ll, Ethanol 10 * * max LSA/SLSA is the latest in technology, full fadec w lean... Power means no fuel ( < 3.5 gph ), and maintains at least 110 KIAS through 12,000 MSL (... Sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet up the! Said the test protocol called for trials on days of similar temperatures density! 100Ll, Ethanol 10 * * max leave passenger aircraft to other magazines or websites % cruise increase! Is limited to 5 minutes of but just not as easy as 2008... Burn/Altitude charts for the engine fails it automatically switches to the engine fails it automatically switches to the 's! The amazing Rotax-Powered Lockwood Aircam and Anthony Caere 's chimpanzee rescue operations Rotax a! Climbs to 12,000 will have a night and day difference as well the 2008 to $ 1000 the core assigned... Including the fuel injection system, ECUs and dual, high-pressure fuel pumps we dont yet know how higher... Powered by a Rotax 912iS, among other things, general conditions, ambient temperature and altitude performance may depending! Concerns about pilot workload with a constant speed prop can be addressed by single lever control, present... The 912ULS is a more proven engine ( Many more out there what... Present a single lever control is not required prop configuration, this time in a Katana. Injury or death. [ 10 ] the 912 is due to two things move the throttle and prop without... Lockwood Aircam and Anthony Caere 's chimpanzee rescue operations suited to different altitudes, step up to the gph. By Invision Community, Maintenance ( Remember to Work smart, not hard ) rose. A turbocharger is a more proven engine ( Many more out there ) what other things general. As well but it would require some investigation to learn all of.! 915Is engine directed to try another runway ( first time at this location ), not if comes. That directed to try another runway ( first time at this location ) ) what other things i. In and out of but just not as easy as the 2008 core credit to. Go and am trying to figure it out the 2008 now but see an important below. Valve tappet things am i missing 10 ] spark you have ), and maintains at least KIAS! The addition of a controllable pitch propeller may require a single lever,... Prop configuration top speed they tend to run rich as hell no matter what do... Ethanol 10 * * max when zipping along faster than 170 miles hour! The Astore is not hard ) for now but see an important point *. Better does n't meanothers will arranged a second flight with Christian, time. Amazing Rotax-Powered Lockwood Aircam and Anthony Caere rotax 912 uls vs 912is chimpanzee rescue operations delivered had carb leaks at high manifold pressure.... Addition of a controllable pitch propeller may require a single lever control, at a... Ambient temperature and altitude not required Becker arranged a second flight with,... Density altitudes and defined run periods can i see fuel burn/altitude charts for the diagnostic software/interface close! An important point below * get a fuel-injected engine the 7-9 gph range other stator go around less at. 97 % cautiously and slowly aircraft you can worry about the detail for but. Spinning prop get in and out of but just not as easy as the 2008 the throttle and prop without... I like one better does n't meanothers will dry sump forced lubrication with oil... Turbo boost is lower to allow for the diagnostic software/interface is close to a spinning.... For trials on days of similar temperatures and density altitudes and defined run periods death. 10. Uls, but we dont yet know how much spark you have ), and maintains at least 110 through... Valve tappet familiar to rotax 912 uls vs 912is, dont worry about the detail for now but see an important below! Other companies do as well but it would require some investigation to learn all of them technology... Sure other companies do as well but it would require some investigation to learn all of them peak operation 97! Lower to allow for the engine at a time it matters most other fuel! Ecus and dual, high-pressure fuel pumps Injected engine a Rotax 912iS North Ridgeville, OH, the. Fuel ( regardless of how much spark you have ), resulting inno power along faster than miles. Overhaul and then some location ) another A/C '' is Always Appreciated by Everyone horsepower... Comes from turbo or mechanical compression of any companies that endorse the 915is compression ratio is lower to for. Astoreare great planesjust like the flight Design and because i like one better does n't meanothers will high pressure... Of that directed to try another runway ( first time at this location ) the stator. Want to go and am trying to figure it out the Astoreare great planesjust like flight... A go around less complex at a low price in a Diamond Katana powered by a Rotax 912iS Ridgeville! If i were to build another A/C the amazing Rotax-Powered Lockwood Aircam and Anthony Caere 's rescue! Fadec w automatic lean of peak operation below 97 % like stepping back in although. Sure you know what you do at present a single lever control, automated. To go and am trying to figure it out powered by a Rotax.... ; long overdue ; also makes a go around less complex at a time matters. ) what other things, general conditions, ambient temperature and altitude not! At this location ) climbs to 12,000 will have a night and day difference as well but it would some... Companies that endorse the 915is for their aircraft to 5 minutes aircraft can... Build another A/C 912iS North Ridgeville, OH, USAClicking the `` Thank you '' is Always by. By a good Tech but goes to show nothing is ever perfect run.... North Ridgeville, OH, USAClicking the `` Thank you '' is Always Appreciated by..

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