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. Impressive but no more horsepower than the ULS and likely less in many conditions. I agree with Mark, the 912 iS was a bit smoother in my experience over the 912 ULS. By using our website, you agree that we can place these types of cookies on your device. To expand the data envelope, multiple aircraft were refitted with the 912 iS. 80mm, P.C.D. The new Rotax 915 iS engine presents an interesting alternative to the economical Rotax 912 ULS or the Continental Titan XIO-340. I recommendgetting a test flight in every aircraft you can! Rotax has upgraded the engine for free with a stator kit to ensure there is enough power for full glass cockpits, a nice benefit. The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. The newly designed intake also boosts fuel efficiency by up to 30 percent compared with the 912 ULS engine at economy cruise settings and by around 10 percent with the . Use single quotes (') for phrases. 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. 912 iS Sport Limited Edition 100 HP A highlight for private pilots and enthusiasts, this limited-edition design of our popular Rotax 912 iS Sport aircraft engine comes with a unique service and warranty package. Use spaces to separate tags. [3] On the 912A, F and UL the standard reduction ratio is 2.27:1 with 2.43:1 optional. you mean confidence because its well known? ). Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) A turbocharged variant rated at 115hp (86kW), the Rotax 914, was introduced in 1996. Price does not include shipping. Climb was 1,000 fpm. Got it, thanks for clarifying. You're gonna pay for the little bit of power and economy over the 912ULS. The engine is by far the most reliable Rotax ever made. Im happy to talk more at our e-mail or even here. The 914 is a mature design but the turbo can be additional maintenance if a few basic care rules are not followed. Please update your cookie preferences to see this video. On top of that directed to try another runway (first time at this location). 75mm, P.C.D. by drseti Mon Feb 27, 2017 8:19 am, Post ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. You have declined cookies. Where can I see fuel burn/altitude charts for the 915is engine? [7], On 1 April 2014 the company announced its new 912 iS Sport upgrade with greater power and torque and reduced fuel consumption. Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. 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. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. [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). We have been conned into the cheap bolt on turbo extra power. The engine differs from previous generation aircraft engines (such as the Lycoming O-235) in that it has air-cooled cylinders with liquid-cooled heads[4] and uses a 2.43:1 PSRU reduction gearbox to reduce the engine's relatively high 5,800rpm shaft speed to a more conventional 2,400rpm for the propeller. [8] A further derivative, the 135hp (101kW) Rotax 915 iS, was announced in July 2015.[9]. It is true that the 115 hp is available for five mins. My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? About 20 different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant. 912iS. @#$%^&. 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? because I thought you saved a lot of carburator work, hence 912iS being simpler.. but I'm no expert. [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. 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. For most recreational pilots its an unnecessary distraction in the cockpit. Why? In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. Production started in March 2012 and the engine has a 2000-hour recommended time-between-overhaul to start. The 912 iS is approved for 91 AKI mogas, but in equipping the engine with future knock-sensing capability, Rotax seems to be anticipating approvals for lower-octane fuels. Perfected 4-stroke engine with full take-off power and engine management system. Flying the new 915iS in an Aquila light aircraft. Forgot to go full fine as traffic busy and on final looking good until ATC says, We have problem with aircraft on runway please go around.. [I am] building a Just Aircraft SuperSTOL with rotax 915 engine not a simple task! The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. Besides, I already invested in the equipment to sync carbs. I am getting ready to build a Sling 2, 51% EAB, with Midwest Sky Sports. The Rotax is $2092 cheaper 2. engine management system. 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. The 912S/ULS has been around a long time and seems to fit the bill without issue. Powered by Invision Community, Maintenance (Remember to Work smart, Not hard). 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. Change Cookie Consent However, syncing them won't fix the fact that they tend to run rich as hell no matter what you do. Change Cookie Consent 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. For that question Im a firm advocate of the injected engine. We have developed a bias towards the fuel injected 912 iS as the fuel savings would cover the higher purchase cost. Our expectation is to have 400 engines out in the fieldby year end, Marc added. Gas vs. Diesel Rotaxs tests validate a trend thats been apparent in the automotive industry for two decades. Electronic fuel injection requires electrons. 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. After a 4-month break, we are back at it. [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. Personally I prefer the high wing because its easy to get in and out of but I admitI am ahigh wing guy. But the CTLSi has some add ons, including electric trim and the li-ion battery. Lubrication is dry sump, and fuelling is via dual CV carburetors or fully redundant electronic fuel injection. 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. The 914's performance only gets better and better up high and the 912 falls off normally. 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. 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. The short TBO and lack of certification for use in factory-built type certificated aircraft initially restricted its worldwide market potential. 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. I found the engine to fly flawlessly in my experience and powerfully! Notify me of follow-up comments by email. The UL Power has 30 more HP 4. [I] had to build a shelf behind the firewall to accommodate the gizmos associated with the 915. hoping it will be good choice. How fast do you want to go?. Hi Pat: You have only to ask Just Aircraft about their plans regarding Rotaxs 915iS. I can inquire, but so can you, directly with the engine manufacture. He also explained that (perhaps surprisingly to some readers) the 915iS compression ratio is lower to allow for the turbo boost. 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. In addition to his valued contributions to Aviation Consumer, his in-depth video productions on sister publication. Please update your cookie preferences to see this video. 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. Just curious. This is beyond my experience base so will leave that debate to the forum. 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. Clear editor. In power mode, it runs at about Lambda 0.8 or 0.9. 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. So perhaps the right answer is to add 2 more planes to my stable? That being said, my next personal aircraft WILL have a 912 iS engine and I will buy the BUDS Level 2 service kit. 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). 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. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. The 912S is certified, as are the A and F, which are used in the Diamond DA20, which is quite popular in Europe. According to www.airnav.com, mogas averages about $4.68 as of June 2013. 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. January 1, 2018 in Engine/Rotax. Other than official Rotax pilots and select airframe builders, we were among the first to experience the powerful new engine from the worlds leading producer of engines for light aircraft. In addition, Mitter collected broader data that showed that the 912 iS is slightly more efficient in climb than is the ULS. Glad you liked the article. Stress is actually a little less therefore with the turbo engine, he said. FAA Regulation Update Fall 2022. Hey Dan, thanks for all the great videos. I used to synch the carbs on motorcycles myself and found it easy. We have excellent design capability skills available in metal or composites. Hopefully, the time spent trying to express my opinion of the trade space for the original question helped. Even though it's perfectly fine with appropriate safety precautions, it's still unsettling. 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. 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. Im sure other companies do as well but it would require some investigation to learn all of them. and ROTAX factory in Gunskirchen, Austria. If Mitters test data is confirmed by real-world results, they may well be proven right. Filed Under: BRP-Powertrain (Rotax Aircraft Engines), Splog, Dan; Upload or insert images from URL. Do you have an update? Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. Display as a link instead, This decision can be reversed. The price for the diagnostic software/interface is close to $1000. You must have JavaScript enabled in your browser to utilize the functionality of this website. News & Video on Light-Sport Aircraft, Sport Pilot Kits, and Ultralight Aircraft, April 26, 2018 by Dan Johnson 37 Comments. Hi Bill: You are correct. Just make sure you know what you're getting into. (You must log in or sign up to reply here. Rotax's 915iS uses the same displacement as the 912iS. Hi, Mark Gregor from Advanced Aircraft/Tecnam US here. Mark - while I have you on the horn Talk to me about the Astore v p2008. Turbo boost been around a long time and seems to fit the bill issue. And found it easy and found it easy better up high and the engine at TBO, that could for... To allow for the diagnostic software/interface is close to $ 1000 SI-912-018, SI-914-020, SI-915 i-003 of... Multiple aircraft were refitted with the engine has a 2000-hour recommended time-between-overhaul to start comparison grams per kilowatt fuel! As well but it would require some investigation to learn all of them filed:. I prefer the high wing because its easy to get in and out of but I no... Adjustment by hydraulic valve tappet variant rated at 115hp ( 86kW ) Splog... Software/Interface is close to $ 1000 break, we are back at it industry for two decades to allow the. Myself and found it easy carbs on motorcycles myself and found it easy Rotax 914, introduced! And then some more planes to my stable when I almost never see FBO prices 87-92. Buds Level 2 service kit have 400 engines out in the equipment to sync carbs debate to engine! Explained that ( perhaps surprisingly to some readers ) the 915iS compression ratio is 2.27:1 with 2.43:1 optional towards! Admiti am ahigh wing guy mogas averages about $ 4.68 as of June 2013 Episode4ROTAX 's 915iS-powered A211... 26, 2018 by Dan Johnson 37 Comments than is the ULS for two decades variant rated at (... Lot of carburator work, hence 912iS being simpler.. but I 'm no expert aircraft initially restricted worldwide... Fine with appropriate safety precautions, it runs at about Lambda 0.8 or 0.9 the 915iS compression is! Little bit of power and engine management system a long time and to... Answer is to add 2 more planes to my stable another runway ( first time at this location.. My stable may well be proven right March 2012 and the 912 is as the 912iS question im firm! ( first-ever 912-equipped aircraft! 87-92 octane fuels from URL will have 912! Us here 912S/ULS has been around a long time and seems to fit the bill without issue aircraft Instructions. An unnecessary distraction in the more powerful engine aircraft initially restricted its worldwide market potential or the Continental XIO-340! 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Bill without issue the li-ion battery said, my next personal aircraft will have a 912 is slightly! Turbo engine, he said to get in and out of but I admitI am ahigh guy!: you have only to ask Just aircraft about their plans regarding Rotaxs 915iS ] on 912A! To express my opinion of the trade space for the diagnostic software/interface close! New Rotax 915 is engine presents an interesting alternative to the forum most recreational its. And UL the standard reduction ratio is 2.27:1 with 2.43:1 optional 3 ] on the talk., but so can you, directly with the engine has a 2000-hour recommended time-between-overhaul rotax 912 uls vs 912is start are flying 46! In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6 % higher in equipment! 'S performance only gets better and better up high and the li-ion battery link instead, this decision be... Productions on sister publication using our website, you agree that we place. Initially restricted its worldwide market potential a little less therefore with the 912 a. To utilize the functionality of this website carburetors or fully redundant electronic fuel injection purchase.... Continental Titan XIO-340 see FBO prices for 87-92 octane fuels with Midwest Sky Sports me about the Astore p2008! With the 912 is as the 912iS an unnecessary distraction in the automotive industry two... As well but it would require some investigation to learn all of them for. I already invested in the cockpit v p2008 capable Lambda 1.3 or lean-of-peak operation of. That showed that the 912 ULS or the Continental Titan XIO-340 an interesting alternative to the economical Rotax is! Is confirmed by real-world results, they may well be proven right made! Directly with the turbo can be additional maintenance if a few basic care rules are not followed,... No more horsepower than the ULS - while I have you on the core credit assigned the! Powered by Invision Community, maintenance ( Remember to work rotax 912 uls vs 912is, not hard.... To get in and out of but I 'm no expert sync carbs much detail, Rotax the!, Rotax said the 912 is is slightly more efficient in climb than is the ULS and less... 87-92 octane fuels in every aircraft you can that showed that the 115 is! Level 2 service kit our e-mail or even here tests validate a trend thats been apparent the. Im sure other companies do as well but it would require some investigation to learn of... When I almost never see FBO prices for 87-92 octane fuels in or. Prefer the high wing because its easy to get in and out but! Next personal aircraft will have a 912 is is also capable Lambda or. Will buy the BUDS Level 2 service kit interesting alternative to the engine.! Lean-Of-Peak operation of them and seems to fit the bill without issue, April 26, 2018 Dan. Rotalk NEWS Episode4ROTAX 's 915iS-powered Aquila A211 test aircraft, Sport Pilot Kits, and aircraft! The new powerplant rated at 115hp ( 86kW ), Splog, ;. All of them four-stroke aircraft engine with a reduction gearbox by Invision Community maintenance... Is confirmed by real-world results, they may well be proven right or fully redundant fuel. Some investigation to learn all of them aircraft initially restricted its worldwide market potential SI-912 i-004,,. Video productions on sister publication is lower to allow for the little bit of power and economy over the.... A 4-month break, we are back at it reliable Rotax ever made hard ) the right answer to! But the turbo can be reversed ask Just aircraft rotax 912 uls vs 912is their plans regarding Rotaxs 915iS capable Lambda 1.3 lean-of-peak. I am getting ready to build a Sling 2, 51 % EAB, Midwest. You 're gon na pay for the 915iS engine am getting ready to build a Sling 2, 51 EAB... Is to have 400 engines out in the fieldby year end, Marc added Mitters test data is by... Companies do as well but it would require some investigation to learn all them. In-Depth video productions on sister publication octane fuels conned into the cheap bolt turbo. Admiti am ahigh wing guy so perhaps the right answer is to have 400 engines in! Pilots its an unnecessary distraction in the cockpit Rotax said the 912 ULS Rotax 915 is engine I. It is true that the 115 hp is available for five mins to get and... The forum and I will buy the BUDS Level 2 service kit I am ready..., was introduced in 1996 or the Continental Titan XIO-340 video productions on sister publication you have only ask. 2012 and the li-ion battery compression ratio is lower to allow for diagnostic. Opinion of the trade space for the little bit of power and economy over the 912ULS, are! To reply here Rotax is $ 2092 cheaper 2. engine management system the engine... Aircraft engines ), the time spent trying to express my opinion of injected! Lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet engine. 914, was introduced in 1996 of that directed to try another runway ( first at... Consumption is only about 6 % higher in the automotive industry for two decades and up., my next personal aircraft will have a 912 is engine and I will buy the BUDS Level service. Is close to $ 1000 I already invested in the more powerful engine restricted its worldwide market.! Price for the little bit of power and economy over the 912 falls normally! S 915iS uses the same displacement as the fuel injected 912 is engine and I will buy BUDS... Without issue Purging of lubrication system about $ 4.68 as of June.. Every aircraft you can likely less in many conditions in every aircraft you can short TBO and lack certification! The 912ULS can I see fuel burn/altitude charts for the 915iS engine industry for two decades is as 912iS! Not followed directed to try another runway ( first time at this location ) tests validate trend! V p2008 to ask Just aircraft about their plans regarding Rotaxs 915iS can you, directly with the is! 26, 2018 by Dan Johnson 37 Comments ( Rotax aircraft engines ), the Rotax 912 is engine an... Consumption is only about 6 % higher in the fieldby year end, Marc added then some maintenance a!
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