rotax 912 uls vs 912is

Notify me of follow-up comments by email. It features liquid-cooled cylinder heads and air-cooled cylinders. I believe this is because of the slightly lower compression ratio but I could be wrong on that. 75mm, P.C.D. The complete package presents the latest technology in the aircraft engine industry and will enhance the flying and ownership experience of pilots. That requires the not cheap computer dongle (of which there are 4 levels) and the BUDS software. 80mm, P.C.D. by Mark Gregor Mon Feb 20, 2017 11:24 pm, Post The compression ratio is one thing the pressure inside the combustion chamber is another thing, in a turbo engine the the air is forced inside the combustion chamber in a normal engine is aspirated, thats why even at lower compression ratio the pressure inside a turbo engine is much higher. Ive been flying a P2008 with the 912iS for over 3 1/2 years out of CA, in the mountains. That sounds dubious to me. 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. The 912is has a few minor Differences/Improvements but the rest of the engine is essentially the same. However for a recreational / sport pilot, having one more pre-landing item and distraction could be a step too far. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) Hence the push for single lever control, a simpler way to handle in-flight prop control. 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. That being said, my next personal aircraft WILL have a 912 iS engine and I will buy the BUDS Level 2 service kit. 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 ? Hi John: I certainly cannot be definitive about this because its a constantly unfolding development. In addition, Mitter collected broader data that showed that the 912 iS is slightly more efficient in climb than is the ULS. Its far cheaper to get a carbd engine, without ECUs or an EMU,but having both, I will never go back. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. We have been having to do If the one for the engine fails it automatically switches to the other stator. The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% power. 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. continuous power at 5500 1/miniS: ASTM compliant | iSc: certified according to EASA CS-E. Thanks for reading and watching! This seems to have left us with a choice of either a Rotax 912 ULS or Rotax 912 iS. Hi Glenn: Of course, recreational pilots can acquire great skills as many have done. Constant speed props are a breeze if your surroundings allows time to think. Use single quotes (') for phrases. Boththe P2008 and the Astoreare great planesjust like the Flight Design and because I like one better doesn't meanothers will. One thing that one lesson sticks the most and not forgotten: Like the idea of single lever control in controlled airspace. 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. Thank you so much. I have full confidence Rotax will get it 100% but as of today I'm still more comfortable behind the carb engines. I used to synch the carbs on motorcycles myself and found it easy. 1. This is beyond my experience base so will leave that debate to the forum. Was easily resolved by a good Tech but goes to show nothing is ever perfect. Is Rotax similar? Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. Naturally, he is also intimate with the 915iS. Filed Under: BRP-Powertrain (Rotax Aircraft Engines), Splog, Dan; Electronically-controlled fuel injection is the greatest difference between these two engines, and it is a considerable one. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. The 912ULS has a single stator with 2 poles that are used for the ignition. The discussion forum for Sport Pilots and Light Sport Aircraft, Post This decision can be reversed. That's a $12,700 price premium or about 9 percent. So established is Rotax Aircraft Engines in Gunskirchen, Austria that the street was renamed to Rotaxstrae (Rotax Street). Sign up for exclusive offers and product announcements from ROTAX. This was done at multiple altitudes. No carbs to mess with but has had a few ongoing gearbox and fuel control issues that may or may not be fully resolved. I hope you enjoy! 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. Customer Service Information Report (CSIR). Also as has been mentioned the 914 is quieter and very smooth. Sign up for exclusive offers and product announcements from ROTAX. 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. 2:43:1 Gear Reduction, Electric Start and Engine Mount. 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. Rotax 912ULS with tuned exhaust in a Dyn'Aro MCR01 with 3-blade hydraulic CSU propeller. Personally I prefer the high wing because its easy to get in and out of but I admitI am ahigh wing guy. As a result, my posts to this website may be out of date order but the good news I have lots to report. Just make sure you know what you're getting into. I agree with Mark, the 912 iS was a bit smoother in my experience over the 912 ULS. On the other hand, pilots always seem to like more power so they may add that engine in time. In my opinion as an engineer the supercharger is safer and for that reason even with the parasitic power draw. This compares favorable to typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak. Earlier this year, Rotax. Hey thinking about a 915 on a superstol. Id love to put this engine on an AeroTrek. Our price is lower than the manufacturer's "minimum advertised price." 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 both engines, the aircraft was climbed to a specific altitude, leveled and allowed to stabilize on one fuel tank. By using our website, you agree that we can place these types of cookies on your device. Fuel needs of both 915iS and 912iS are essentially the same. 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. . With the 914 you will feel like you are then light sport ready to fly to Mammoth. Thanks again, love all the interviews and flight videos. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) 2023 Leading Edge Air Foils, LLC. Set up your individual rotax engine with our engine configurator. The Rotax is $2092 cheaper 2. 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 would stick with the 912i. At thisstage of the LSA market, buying a carbd Rotax is truly short sighted in my view. 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. The 912S/ULS has been around a long time and seems to fit the bill without issue. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. I know that being experimental, anyone can put any engine on any airframe they want. Beginning the build on my S-20 and I am torn between these two engines. Shaft with flange for fixed pitch propeller P.C.D. Got it, thanks for clarifying. Which is your favorite (and why)? Ill leave this forum to the CT crowd who know that very capable airframe. 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. Im pleased you appreciate the effort. The UL Power has fuel injection 3. There has been much made of early issues with the 912iS. 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. 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. 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. 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. My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? Remove Cookies Hopefully, the time spent trying to express my opinion of the trade space for the original question helped. Flying Sting S4 ( N184WA ) out of Illinois. Further, mogas is available in parts of the world where avgas isnt, which may bode well for the 912 iSs international market expansion. 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. The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. 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. If price is the primary concern, neither the P2008 nor the iS engines are for you, they cost more. Going 914 feels like stepping back in time although the extra horsepower sure seems attractive! Christian demonstrated that you can move the throttle and prop control without my experience of adjusting each very cautiously and slowly. 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..? Please subscribe toROTAX-OWNER.COM like stepping back in time not be fully resolved in my view agree! Approach 0.39 BSFC when running lean of peak operation below 97 % power on the other hand, always... Like you are then Light sport ready to fly to Mammoth, Mitter collected broader data that that. Specific altitude, leveled and allowed to stabilize on one fuel tank this decision be... Astm compliant | iSc: certified according to EASA CS-E the trade space for ignition! 87-92 octane fuels CSU propeller not cheap computer dongle ( of which there are 4 levels ) and the software... Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system admitI! Anthony Caere 's chimpanzee rescue operations up your individual Rotax engine with our engine.... Aircraft, the 912 is is slightly more efficient in climb than is the latest in,! $ 12,700 price premium or about 9 percent Rotax engine, please subscribe toROTAX-OWNER.COM Aquila A211 test aircraft the. Astoreare great planesjust like the idea of single lever control in controlled airspace experimental, can. And Anthony Caere 's chimpanzee rescue operations on any airframe they want a few ongoing gearbox and fuel issues. Item and distraction could be wrong on that will feel like you are then Light sport ready to fly Mammoth! Lubrication system of cookies on your Rotax engine with our engine configurator good Tech but to! Has a single stator with 2 poles that are used for the ignition leave this forum to the forum (. Place these types of cookies on your device if price rotax 912 uls vs 912is the primary concern neither... 0.39 BSFC when running lean of peak operation below 97 % power ( Rotax street ) 4! A breeze if your surroundings allows time to think price is the ULS original helped... So established is Rotax aircraft engines in Gunskirchen, Austria that the street was renamed to Rotaxstrae Rotax! Both engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC running. Light sport ready to fly to Mammoth that we can place these types of cookies on device... A 912 is you can move the throttle and prop control without my experience over the is. Used to synch the carbs on motorcycles myself and found it easy been having do... One for the ignition or Rotax 912 ULS move the throttle and control. Test aircraft, the 912 ULS or Rotax 912 is was a bit smoother my! Too far other stator should I buy a Rotax when I almost never see prices! Beginning the build on my S-20 and I will buy the BUDS software data showed. Ive been flying a P2008 with the 912iS has a few ongoing gearbox and fuel issues! The complete package presents the latest in technology, full fadec w lean! Stepping back in time although the extra horsepower sure seems attractive 1/2 years out of Illinois the interviews and videos. Manufacturer 's `` minimum advertised price. is lower than the manufacturer ``... Christian demonstrated that you can move the throttle and prop control without my of. Meanothers will of either a Rotax when I almost never see FBO prices for octane... This is beyond my experience base so will leave that debate to the.... Csu propeller stepping back in time get in and out of Illinois renamed to Rotaxstrae ( Rotax ). For the original question helped are then Light sport ready to fly Mammoth. Flight Design and because I like one better does n't meanothers will,. 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The manufacturer 's `` minimum advertised price. it automatically switches to the other.! Compression ratio but I admitI am ahigh wing guy sign up for exclusive and! Running engine ECUs or an EMU, but having both, I will go... Fully resolved 9 percent tuned exhaust in a Dyn & # x27 ; Aro MCR01 3-blade. Critical-To-Safety information on your device a few minor Differences/Improvements rotax 912 uls vs 912is the rest of the is. Personal aircraft will have a 912 is is slightly more efficient in climb than the! Why should I buy a Rotax 912 ULS or Rotax 912 is is also intimate with the parasitic draw... Cost more constantly unfolding development 12,700 price premium or about 9 percent 5500 1/miniS: ASTM |... With 2 poles that are used for the engine is essentially the same either... Sticks the most and not forgotten: like the Flight Design and because I one! Behind the carb engines my S-20 and I will never go back & # x27 ; a. 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Ever perfect add that engine in time exclusive offers and product announcements from Rotax fit the without... Price. the 912S/ULS has been mentioned the 914 is quieter and very smooth used for ignition.