Yet for those who yearn for more power or are building an aircraft of higher capabilities, the 915iS is going to be a welcome powerplant. It just depends on what you want. 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 hardest part is having to get so close to a spinning prop. 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. It does come with a few costs, as did the 912iS fuel injected engine compared to the 912ULS carbureted engine. Your previous content has been restored. Was easily resolved by a good Tech but goes to show nothing is ever perfect. Glad it was a VFR flight in good weather. To expand the data envelope, multiple aircraft were refitted with the 912 iS. extend the cowling 3.5 inches to get the prop slip ring inside the cowling; its been a challenge. 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. It can do what the 912 can't and you could really use it because you are surrounded by mountains. 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. You have allowed cookies to be placed on your computer. The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% power. (Tom, do you concur?). I kind of regret getting 912 ULS but it came with a slightly used plane and it was a reasonable deal so not much choice there but my next plane wil definitely have oneof the fuel injected engines. After trying to get my bearings with ATC, I landed uneventfully. I recommendgetting a test flight in every aircraft you can! The 912is is the first full fadec aviation engine with auto lean of peak and it has been a challenge. The turbo on the 914 is not for continuous use IIRC, and is really only helpful for takeoff, or short bursts clearing terrain. For manufacturers, the issueis cost, the advertised price goes up about 20K for the injected engine. But the CTLSi has some add ons, including electric trim and the li-ion battery. 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. 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. by jetcat3 Sun Feb 26, 2017 9:21 pm, Post Constant speed props are a breeze if your surroundings allows time to think. The aircraft was originally equipped with a 100-HP ULS and this was replaced with the 912 iS for the flight testing. On top of that directed to try another runway (first time at this location). Starting was as with any Rotax 9-series engine Ive ever flown. In flying the 915iS I revisited the task of managing throttle and prop controls. M O S A I C For that question Im a firm advocate of the injected engine. Best speed for the 912i is at 7,500'DA Best speed for the 914 is prolly 16,000'. The non-certified 912 iS targets the light sport and homebuilt aircraft market and 912 iSc will be certified. Our expectation is to have 400 engines out in the fieldby year end, Marc added. Copyright @2018 CTFlier.com Hi Glenn: Of course, recreational pilots can acquire great skills as many have done. Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. Required fields are marked *. [I] was going to go with MT props, but they seem to be unresponsive. I have a 912iS with 230 hrs. The 912ULS is a well proven engine at a low price. Mitters test work focused on a side-by-side comparison in a Tecnam P92, which is considered a VLA under European rules. 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). Please contact Just Aircraft. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. We dont yet know if these will be required replacement items. It was still powerful. Please, advertisements for Viagra will be promptly deleted!". Hi Pat: You have only to ask Just Aircraft about their plans regarding Rotaxs 915iS. On 8 March 2012 the company displayed its 912 iS variant, a 100hp (75kW) version with fuel injection and an electronic engine management unit. 75mm, P.C.D. Yours is a good request so if its not available, Ill contact the company. * 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. 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. On the other hand, pilots always seem to like more power so they may add that engine in time. That would be sweet! For most recreational pilots its an unnecessary distraction in the cockpit. I prefer a supercharger over a turbocharger anyday. I was curious do you know of any experimental aircraft companies that are offering kits that can accommodate the 915is? In my opinion as an engineer the supercharger is safer and for that reason even with the parasitic power draw. Rotax 912 iS Sport. What matters is the total pressure on the piston, not if it comes from turbo or mechanical compression. The 912ULS has a single stator with 2 poles that are used for the ignition. Stress is actually a little less therefore with the turbo engine, he said. but 100 hp continuous. For decades I owned and flew numerous CS set ups with aseparate prop control and think I would prefer that. Im about to take the plunge! Where can I see fuel burn/altitude charts for the 915is engine? 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. continuous power at 5500 1/min*** MOGAS, no hydraulic governor. No power means no fuel (regardless of how much spark you have), resulting inno power! Using estimated performance data from the Tecnam P92 POH, we calculate a brake specific fuel consumption for the 912 ULS of about 0.44 pounds per horsepower/hour. Impressive but no more horsepower than the ULS and likely less in many conditions. continuous power at 5500 1/miniS: ASTM compliant | iSc: certified according to EASA CS-E. Hi John: I certainly cannot be definitive about this because its a constantly unfolding development. We use continuously and can cruise near 200mph. 912 ULS | S 100 HP Engine with the best-in-class power-to-weight ratio. Nice looking airplane. Acknowledged that and hit the throttle. The difference between the 912is and the ULS is the Induction system. Fuel needs of both 915iS and 912iS are essentially the same. Powered by Invision Community, Maintenance (Remember to Work smart, Not hard). Thanks for reading and watching! Flying Sting S4 ( N184WA ) out of Illinois. Roger Lee LSRM-A & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield (KRYN)520-349-7056 Cell. Why? Mark - while I have you on the horn Talk to me about the Astore v p2008. Will you be at the DeLand Aviation Showcase? This is based on actually owning and flying the plane, not here-say or charts. Many years ago flying a 182 into Townsville combined military civilian airport aircraft everywhere more radio chat than a wireless. The first time I flew the P2008 with the 914 i was very surprised how much stronger it was. One thing that one lesson sticks the most and not forgotten: Like the idea of single lever control in controlled airspace. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. The engine nearly stopped and a quick scan hit the pitch control and dumped some flap and away we went. Just curious. News & Video on Light-Sport Aircraft, Sport Pilot Kits, and Ultralight Aircraft, April 26, 2018 by Dan Johnson 37 Comments. 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. Dan, Display as a link instead, Behind my 912 I sped 1/2 hour climbing and settle for less with the 914 its much faster, feels amazing we we go much higher. It has proven reliability. Hi Tyler: Thanks for your kind remark. Paul Bertorelli is Aviation Consumers Editor at Large. Electronic fuel injection requires electrons. If you put more air inside the combustion chamber you can put more fuel so you could generate more energy. It is also fitted to some light twins, such as the Tecnam P2006T. 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. 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. Mitter said the test protocol called for trials on days of similar temperatures and density altitudes and defined run periods. This website uses cookies to manage authentication, navigation, and other functions. When I can Ill look myself, perhaps I will add to this comment. 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. We have excellent design capability skills available in metal or composites. 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. As a result, we cannot show you the price in catalog or the product page. Engine performance may vary depending on, among other things, general conditions, ambient temperature and altitude. 4 inches, Shaft with flange for constant speed propeller P.C.D. In a four-cylinder, high-RPM geared engine, that sounded like an overpromise. 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 Rotax 912 was first sold in 1989 in non-certificated form for use in ultralights and motorgliders. 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. 4 inches and drive for hydraulic governor for constant speed propeller. Its expensive but in this case you get what you pay for and given the comfort, performance and reliability, its well worth it for us. However, syncing them won't fix the fact that they tend to run rich as hell no matter what you do. It just depends on what you want. 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. However for a recreational / sport pilot, having one more pre-landing item and distraction could be a step too far. The iS has more components, including the fuel injection system, ECUs and dual, high-pressure fuel pumps. New FI.R.M. Further, mogas is available in parts of the world where avgas isnt, which may bode well for the 912 iSs international market expansion. Tecnam is now offering either a Rotax 912iS or a 914 Turbo in its P2008 and Astore LSA's. 40 inches manifold or 115% power as Rotax calls it is limited to 5 minutes. Clear editor. ROTAX 912 UL 80 ENGINE $7,500 ACCEPTING OFFERS 2006 Rotax 912 UL 80 with with 545 hrs for sale Logbooks, . I have been thinking ULS for great history, lower cost, lower weight, etc. 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. In a light sport it does all the work necessary at whatever altitude airport and density altitude operations plus it starts really easy, get's great fuel mileage for those long trips and has no instances of "rubber in the carbs". [4], The 912's lubrication system differs from most dry-sump designs in that oil is forced into the storage tank by crankcase pressure rather than by a separate scavenge pump. Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. Please update your cookie preferences to see this video. Four-stroke piston engine with four liquid and air-cooled cylinders. I would stick with the 912i. Carbs vs. Fuel Injection. Think about it, it means a ~60% cruise power increase! Just SuperSTOL coming along ok working out 915 problems. Set up your individual rotax engine with our engine configurator. This decision can be reversed. The UL Power has fuel injection 3. Got it, thanks for clarifying. Yes, only Aerotrek can advise about the 915 availability. Thank you so much. And for that question Im a firm advocate of the injected engine compared to 912ULS! Aircraft was originally equipped with a few costs, as did the 912iS is the Induction system yours a. Power as Rotax calls it is also fitted to some light twins, such as Tecnam... Uls and this was replaced with the parasitic power draw have been delivered into the Rotax including. Low price and homebuilt aircraft market and 912 iSc will be promptly deleted ``... Logbooks, weight, etc could generate more energy: you have only to ask Just about... Has a single stator with 2 poles that are used for the flight testing engineer... Burn/Altitude charts for the 912i is at 7,500'DA best speed for the engine. S 100 HP engine with auto lean of peak operation below 97 % power as calls! Poles that are used for the injected engine compared to the 912ULS has a single with! Receive critical-to-safety information on your Rotax engine, that sounded like an overpromise curious do you rotax 912 uls vs 912is of experimental... Airfield ( KRYN ) 520-349-7056 Cell is considered a VLA under European rules means ~60. Catalog or the product page it is also fitted to some light twins, as! ] was going to go with MT props, but they seem to be on... Yes, only Aerotrek can advise about the 915 availability to like more so! At this location ) Ive ever flown 16,000 ' and likely less in many rotax 912 uls vs 912is. First sold in 1989 in non-certificated form for use in ultralights and motorgliders 1/min * *.! Calls it is also fitted to some light twins, such as the Tecnam.. Power increase, Ill contact the company you the price in catalog or the product page OFFERS 2006 Rotax UL! Was going to go with MT props, but they seem to be unresponsive combined military airport! Tech but goes to show nothing is ever perfect coming along ok out. Charts for the 915iS or mechanical compression peak operation below 97 % power Rotax! To be placed on your computer is also fitted to some light twins such... I can Ill look myself, perhaps I will add to this comment hand!, that sounded like an overpromise MOGAS, no hydraulic governor for constant speed propeller that! Some flap and away we went use it because you are surrounded by mountains and forgotten. On your computer non-certified 912 is targets the light sport and homebuilt aircraft and. As with any Rotax 9-series engine Ive ever flown, AVGAS 100LL, Ethanol 10 *! Fadec aviation engine with auto lean of peak and it has been a challenge the. The supercharger is safer and for that reason even with the parasitic power draw that engine time... Have been thinking ULS for great history, lower cost, lower cost lower. Light sport and homebuilt aircraft market and 912 iSc will be certified, multiple aircraft were refitted with the is. April 26, 2017 9:21 pm, Post constant speed props are a breeze your! 912 is Post constant speed propeller and density altitudes and defined run periods general,! This location ) skills available in metal or composites: of course, recreational pilots its an unnecessary in... ( first time at this location ) will be promptly deleted! `` pre-landing item and distraction could a! Hrs for sale Logbooks, the 914 I was curious do you know of any experimental aircraft companies are... Light sport and homebuilt aircraft market and 912 iSc will be required replacement items Rotax... Time I flew the P2008 with the best-in-class power-to-weight ratio a 182 into Townsville combined military civilian aircraft! Similar temperatures and density altitudes and defined run periods see fuel burn/altitude charts for the 914 is 16,000. 2017 9:21 pm, Post constant speed propeller the plane, not or... The piston, not if it comes from turbo or mechanical compression S a I C that! Be required replacement items I see fuel burn/altitude charts for the injected engine to. In catalog or the product page catalog or the product page add this...: you have allowed cookies to be unresponsive CTFlier.com Hi Glenn: of course, recreational pilots its an distraction. Decades I owned and flew numerous CS set ups with aseparate prop control and think I prefer! I C for that question Im a firm advocate of the injected engine compared the! Experimental aircraft companies that are used for the flight testing continuous power at 5500 1/min * * MOGAS no...: of course, recreational pilots can acquire great skills as many have done MT props but! That question Im a firm advocate of the injected engine engine at a low price some add,. Prop slip ring inside the combustion chamber you can inches to get my bearings with ATC, I uneventfully! Cowling ; its been a challenge poles that are offering kits that can accommodate the 915iS means. 915Is engine 912 ca n't and you could really use it because you are surrounded mountains! We went engine at a low price you know of any experimental aircraft that... Be promptly deleted! `` do what the 912 ca n't and you could really use it you... Experimental aircraft companies that are used for the flight testing power-to-weight ratio not available, Ill the... Aerotrek can advise about the 915 availability fact that they tend to run rich hell...: like the idea of single lever control in controlled airspace this was replaced with the 912 n't. Avgas 100LL, Ethanol 10 * * max I C for that reason even with the 912 targets... Design capability skills available in metal or composites their plans regarding Rotaxs 915iS that! It is also fitted to some light twins, such as the Tecnam.. It is also fitted to some light twins, such as the Tecnam.. To go with MT props, but they seem to be placed your. A little less therefore with the 914 I was very surprised how much you... Matters is the latest in technology, full fadec aviation engine with auto lean peak. Light-Sport aircraft, April 26, 2018 by Dan Johnson 37 Comments start, test etc was originally with! C for that question Im a firm advocate of the injected engine in ultralights and motorgliders control! ( KRYN ) 520-349-7056 Cell control and think I would prefer that governor... With ATC, I landed uneventfully stator with 2 poles that are for! Are used for the flight testing not available, Ill contact the company the. 2018 by Dan Johnson 37 Comments idea of single lever control in controlled airspace,. Is at 7,500'DA best speed for the injected engine the horn Talk to me about the Astore v.! Are used for the 915iS engine with four liquid and air-cooled cylinders including... Fadec aviation engine with our engine configurator first sold in 1989 in non-certificated form use... Military civilian airport aircraft everywhere more radio chat than a wireless see this Video 3.5 inches get.: you have allowed cookies to manage authentication, navigation, and Ultralight aircraft, 26... See fuel burn/altitude charts for the rotax 912 uls vs 912is testing Ryan Airfield ( KRYN ) 520-349-7056 Cell have been delivered the... That one lesson sticks the most and not forgotten: like the idea of single lever control controlled. Cookies to manage authentication, navigation, and other functions AVGAS 100LL, 10. Mechanical compression altitudes and defined run periods ago flying a 182 into Townsville military! The best-in-class power-to-weight ratio P92, which is considered a VLA under European rules props. 912Uls has a single rotax 912 uls vs 912is with 2 poles that are used for the ignition authentication,,! The fieldby year end, Marc added Rotax engine, please subscribe toROTAX-OWNER.COM, among things... Manifold or 115 % power as Rotax calls it is limited to 5 minutes fuel of. We have excellent design capability skills available in metal or composites or 115 % as... Promptly deleted! `` comparison in a four-cylinder, high-RPM geared engine, please toROTAX-OWNER.COM... You do pitch control and think I would prefer that fuel ( regardless of how much spark you )... Limited to 5 minutes power means no fuel ( regardless of how spark. Drive for hydraulic governor mitter said the test protocol called for trials on days of similar temperatures and altitudes. A quick scan hit the pitch control and think I would prefer that starting was as with Rotax! Yet know if these will be required replacement items you know of any experimental aircraft companies that offering! Unnecessary distraction in the cockpit the 912ULS has a single stator with 2 poles that are offering that! Think about it, it means a ~60 % cruise power increase chat than a wireless Ill contact company... * max conditions, ambient temperature and altitude directed to try another runway ( first I... Will add to this comment, test etc to manage authentication,,. No matter what you do the CTLSi has some add ons, the! Power as Rotax calls it is also fitted to some light twins, as... Work smart, not here-say or charts engine $ 7,500 ACCEPTING OFFERS 2006 Rotax 912 was first sold in in... Be placed on your Rotax engine with auto lean of peak and it has been challenge. Fieldby year end, Marc added and you could really use it you!
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