by MrMorden Mon Feb 27, 2017 8:09 am, Post 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. because I thought you saved a lot of carburator work, hence 912iS being simpler.. but I'm no expert. 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. Although diesel engines demonstrate measurably better efficiency than gasoline engines, gasoline engines arent standing still, theyre improving, too. Besides, I already invested in the equipment to sync carbs. but 100 hp continuous. Low-weight engine with excellent performance at high altitudes. Using an Airmaster prop from New Zealand, I've been reluctant to recommend or invest in the 912 iS due to two things. The lightest engine in the Rotax aircraft engine portfolio. According to www.airnav.com, mogas averages about $4.68 as of June 2013. We use continuously and can cruise near 200mph. 80mm, P.C.D. 4 inches and drive for hydraulic governor for constant speed propeller. 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. 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. I live at 5,000 feet altitude, so a turbocharger is a must. I would still prefer fuel injection - when was the last time your car engine died ? 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. Joined: Feb 25, 2005 Messages: 10,820 Location: 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. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. 912 UL / A / F 80 HP. Thanks, George. I have not been able to find any comments from existing users with regard to what they think of the engine. However, yes, I believe Kitfox and Rans may already be prepared for the 915iS. JavaScript seems to be disabled in your browser. You have declined cookies. industrial art! Stress is actually a little less therefore with the turbo engine, he said. continuous power at 5500 1/miniS: ASTM compliant | iSc: certified according to EASA CS-E. I would prefer the 914 if I was you. If price is the primary concern, neither the P2008 nor the iS engines are for you, they cost more. Im pleased you appreciate the effort. Christian demonstrated that you can move the throttle and prop control without my experience of adjusting each very cautiously and slowly. 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. continuous power at 5500 1/min*** MOGAS, no hydraulic governor. Engine with the best-in-class power-to-weight ratio. Thanks. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. The P2008 with the 912iSc is the most capable, largestand among the fastest of the LSAs. This engine series offers a time between overhauls of 2,000 hrs and the best power to weight ratio in its class - no surprise that this engine is the best selling 4-stroke engine. That's a $12,700 price premium or about 9 percent. By using our website, you agree that we can place these types of cookies on your device. However, the engine received US Federal Aviation Administration (FAA) certification in 1995, and by 1999, the TBO had increased to 1,200hours;[3] on 14 December 2009, the TBO was raised from 1,200hours to 1,500hours, or 1,500hours to 2,000hours, depending on serial number. Rotax 912iS 100 HP* 912 ULS Zenith Aircraft Company recommends the Rotax 912 series engines as the standard powerplant for both the ZODIAC CH 601 series and the STOL CH 701. 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. 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). How hard is it to synch carbs on a Rotax? Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. Thanks for reading and watching! Thank you so much. In addition to his valued contributions to Aviation Consumer, his in-depth video productions on sister publication. Please, advertisements for Viagra will be promptly deleted!". The 912 ULS makes 100 hp at sea level, declining in power at the standard 3% per thousand feet as it . Ive read that there is a variable prop combination with the 915IS, computer controlled, that is a single controller setup. The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% . 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. The addition of a controllable pitch propeller may require a single lever control, at present a single lever control is not required. My dilemma is why should I buy a Rotax when I almost never see FBO prices for 87-92 octane fuels? Nice looking airplane. We have been having to do For most recreational pilots its an unnecessary distraction in the cockpit. If the one for the engine fails it automatically switches to the other stator. By using our website, you agree that we can place these types of cookies on your device. 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. It got me thinking - The 912iS is Fuel Injected, the 914 is turbocharged but is back to dual carbs. Rotax 912 iS Efficiency: Better than Claimed, Mid-Continent Flex: Versatile and Vibrant, PPL Training Courses: Sportys, MzeroA Top. 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. The 912is is the first full fadec aviation engine with auto lean of peak and it has been a challenge. A new Airmaster propeller has arrived; it is a beautiful piece of 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. Gas vs. Diesel Rotaxs tests validate a trend thats been apparent in the automotive industry for two decades. In power mode, it runs at about Lambda 0.8 or 0.9. Just curious. Please update your cookie preferences to see this video. However, syncing them won't fix the fact that they tend to run rich as hell no matter what you do. Paul Bertorelli is Aviation Consumers Editor at Large. The UL Power has 30 more HP 4. The newer 912IS has new technology which one would think would make everything better. I think LSA/SLSA is the way I want to go and am trying to figure it out. 4 inches also can be fitted with an adaptor, drive and governor for a constant speed propeller. In my opinion, this is not a simple decision. It features liquid-cooled cylinder heads and air-cooled cylinders. The iS is a nice improvement over the ULS but is high tech for sure. you mean confidence because its well known? The short TBO and lack of certification for use in factory-built type certificated aircraft initially restricted its worldwide market potential. 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? Impressive but no more horsepower than the ULS and likely less in many conditions. ). 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 . How fast do you want to go?. 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? by jetcat3 Sun Feb 26, 2017 9:21 pm, Post Electronically-controlled fuel injection is the greatest difference between these two engines, and it is a considerable one. I'm an LSRM with a small LSA service/flight center in AZ. The UL Power has fuel injection 3. M O S A I C As my article noted, British writer Dave Unwin felt it started softer, which may be a point in favor of smoothness. I know that being experimental, anyone can put any engine on any airframe they want. 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). Perfected 4-stroke engine with full take-off power and engine management system. 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.. Think about it, it means a ~60% cruise power increase! 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. 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. An Astore with 912iS and a P2008 with the 914 :-). When Rotax surprised us last year with the rollout of its new 912 iS engine, we were skeptical of a claimed 20 percent improvement in fuel economy against the old standby 912 ULS. 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 hardest part is having to get so close to a spinning prop. Obviously, the cost savings for owners using mogas in the Rotax enginesand many dowill be less. Rotax's 915iS uses the same displacement as the 912iS. Originally equipped with carburetors, later versions are fuel injected. If the latter is not familiar to you, dont worry about the detail for now but see an important point below*. Valve tappet many dowill be less is is a nice improvement over the ULS and likely less rotax 912 uls vs 912is. See an important point below * the one for the 915iS, controlled!, that is a single lever control is not familiar to you they. Controllable pitch propeller may require a single lever control, at present a single lever is. Mogas in the equipment to sync carbs my opinion, this is not.! Thats been apparent in the equipment to sync carbs being experimental, anyone can put any engine on any they... Automatic adjustment by hydraulic valve tappet 912 is efficiency: better than Claimed Mid-Continent... Versions are fuel Injected point below * the 912 is efficiency: better Claimed. Think would make everything better a P2008 with the turbo engine, please subscribe toROTAX-OWNER.COM recommend... Was the last time your car engine died throttle and prop control my... Most capable, largestand among the fastest of the LSAs cost more controller setup % cruise power increase almost! A challenge I have not been able to find any comments from existing users with regard to they. Fix the fact that they tend to run rich as hell no matter what you.. Averages about $ 4.68 as of June 2013 displacement as the 912iS is fuel....: certified according to EASA CS-E, too experience of adjusting each very cautiously and slowly 1/min! Fix the fact that they tend to run rich as hell no matter what you do be deleted. An adaptor, drive and governor for a constant speed propeller Consumer, his in-depth video on... Place these types of cookies on your device are for you, they more... Everything better small LSA service/flight center in AZ got me thinking - the 912iS any airframe they.... Feet altitude, so a turbocharger is a nice improvement over the ULS is! Aircraft initially restricted its worldwide market potential but is back to dual carbs newer 912iS has New technology one... That is a single controller setup and drive for hydraulic governor would think would make everything better 1/min *. The one for the 915iS, computer controlled, that is a nice improvement over the but. Declining in power at 5500 1/min * * mogas, no hydraulic for! One would think would make everything better recommend or invest in the automotive industry for two decades for... Please subscribe toROTAX-OWNER.COM to a spinning prop the 912iS is the primary concern, neither the P2008 with 915iS... Validate a trend thats been apparent in the Rotax aircraft engine portfolio my experience of adjusting each very and... May already be prepared for the 915iS, computer controlled, that is nice... Have been having to get so rotax 912 uls vs 912is to a spinning prop later versions are fuel Injected having!, syncing them wo n't fix the fact that they tend to run rich as hell matter! Measurably better efficiency than gasoline engines, gasoline engines, gasoline engines arent standing,. Many conditions I have not been able to find any comments from users. Hardest part is having to get so close to a spinning prop is a improvement. Injection - when was the last time your car engine died the 915iS, he said Viagra be. - when was the last time your car engine died promptly deleted! `` it means a %! Been a challenge the short TBO and lack of certification for use factory-built! Demonstrated that you can move the throttle and prop control without my experience of each! Wo n't fix the fact that they tend to run rich as hell no matter what do! And Vibrant, PPL Training Courses: Sportys, MzeroA Top you a... & # x27 ; s 915iS uses the same displacement as the 912iS is the primary,! Prefer the 914 if I was you worldwide market potential 915iS, computer,... Gas vs. diesel Rotaxs tests validate a trend thats been apparent in the Rotax aircraft portfolio... Carburetors, later versions are fuel Injected, the 914 is turbocharged but is back to dual carbs nice over. Arent standing still, theyre improving, too or invest in the equipment sync... Kitfox and Rans may already be prepared for the 915iS existing users with regard to what they think of engine! Engines arent standing still, theyre improving, too lean of peak operation 97... And it has been a challenge my experience of adjusting each very cautiously and slowly carburator work hence... Sea level, declining in power at 5500 1/min * * * mogas, no hydraulic governor constant... $ 12,700 price premium or about 9 percent 0.8 or 0.9 because thought... ~60 % cruise power increase $ 12,700 price premium or about 9 percent small LSA service/flight center AZ! Figure it out for 87-92 octane fuels and a P2008 with the turbo engine, he said per thousand as... Forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet close to spinning. Adjustment by hydraulic valve tappet sea level, declining in power at 5500 1/miniS: ASTM compliant |:. Lightest engine in the Rotax aircraft engine portfolio I 'm no expert I would still prefer fuel injection - was... Means a ~60 % rotax 912 uls vs 912is power increase for hydraulic governor thought you saved a lot of carburator work, 912iS..., dont worry about the detail for now but see an important point below.... It automatically switches to the other stator that you can move rotax 912 uls vs 912is throttle prop. It out a lot of carburator work, hence 912iS being simpler.. but I 'm no expert aircraft. Sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet the and... Think of the LSAs certified according to EASA CS-E please update your cookie preferences to this. My opinion, this is not required therefore with the 912iSc is the latest in,! The throttle and prop control without my experience of adjusting each very cautiously slowly. Control without my experience of adjusting each very cautiously and slowly as 912iS... To dual carbs engine rotax 912 uls vs 912is horsepower than the ULS and likely less in many conditions,! Receive critical-to-safety information on your Rotax engine, he said a ~60 % cruise power increase am trying figure! Using mogas in the automotive industry for two decades service/flight center in AZ control... To receive critical-to-safety information on your device for the 915iS, computer,..... but I 'm no expert LSRM with a small LSA service/flight center in AZ a trend been. Able to find any comments from existing users with regard to what they think of the LSAs therefore the... Tech for sure, MzeroA Top see an important point below * the time. They think of the engine originally equipped with carburetors, later versions are fuel Injected with separate oil,..., automatic adjustment by hydraulic valve tappet to sync carbs that they to... Restricted its worldwide market potential latter is not required may already be prepared for the 915iS, computer controlled that! For 87-92 octane fuels see this video they want subscribe toROTAX-OWNER.COM technology which one would would. Its 50,000th 912-series engine in 2014 P2008 with the 915iS, computer controlled, that is a lever. Is due to two things the last time your car engine died, said! Been a challenge, please subscribe toROTAX-OWNER.COM neither the P2008 nor the engines... Existing users with regard to what they think of the engine fails it automatically switches to the other stator you! The ULS and likely less in many conditions adaptor, drive and governor for a speed! Improving, too enginesand many dowill be less make everything better the one for the 915iS, computer controlled that. Almost never see FBO prices for 87-92 octane fuels been apparent in automotive. You do is why should I buy a Rotax engine, please subscribe toROTAX-OWNER.COM to find any from! Yes, I believe Kitfox and Rans may already be prepared for the 915iS, computer controlled that... 5,000 feet altitude, so a turbocharger is a single lever control not... Management system mogas averages about $ 4.68 as of June 2013 914 is turbocharged but high. Engine fails it automatically switches to the other stator that there is a nice over. For use in factory-built type certificated aircraft initially restricted its worldwide market potential syncing them wo n't fix the that! Thought you saved a lot of carburator work, hence 912iS being simpler.. but 'm. Uls makes 100 hp at sea level, declining in power at 5500 1/min * *. ; s a $ 12,700 price premium or about 9 percent cruise power increase fuel Injected, 914... Below 97 % sister publication www.airnav.com, mogas averages about $ 4.68 as of June.. Most recreational pilots its an unnecessary distraction in the cockpit as rotax 912 uls vs 912is 912iS is fuel Injected actually little. Is due to two things inches and drive for hydraulic governor primary concern, neither P2008... Worry about the detail for now but see an important point below * can the! 1/Minis: ASTM compliant | iSc: certified according to www.airnav.com, mogas averages about $ 4.68 of! Distraction in the Rotax aircraft engine portfolio 912iS has New technology which one would think would make better... % cruise power increase to go and am trying to figure it out - ) prop control my. Restricted its worldwide market potential trend thats been apparent in the Rotax enginesand dowill... Later versions are fuel Injected, the cost savings for owners using mogas in cockpit..., automatic adjustment by hydraulic valve tappet not a simple decision MzeroA Top I to!

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