I downsized from a Baron so my perspective is not based on cost but based on capability. If the latter is not familiar to you, dont worry about the detail for now but see an important point below*. You must have JavaScript enabled in your browser to utilize the functionality of this website. 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. M O S A I C 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. In flying the 915iS I revisited the task of managing throttle and prop controls. The electronic fuel injected Rotax 912iS is a recent development. 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). I used to synch the carbs on motorcycles myself and found it easy. Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. [I] had to build a shelf behind the firewall to accommodate the gizmos associated with the 915. hoping it will be good choice. The 912S/ULS has been around a long time and seems to fit the bill without issue. Thanks! No power means no fuel (regardless of how much spark you have), resulting inno power! 75mm, P.C.D. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. 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..? Upload or insert images from URL. The 912 iS is slightly heavier than the ULS, but this appears not to have been a factor in the trials. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. No carbs to mess with but has had a few ongoing gearbox and fuel control issues that may or may not be fully resolved. Plan on attending the Annual Sport Pilot Expo. Must be due to the turbocharger and lower compression ratio. What make and model of turbocharger does Rotax use on the 914 and 915is engines? Our price is lower than the manufacturer's "minimum advertised price." Notify me of follow-up comments by email. any and all info you can provide would be golden. 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. But even with the same amount of fuel the turbo engine is more efficient because the air flows inside the chamber without been aspirated. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. Your need to keep the greasy side down may be 'cause you pushed the pistons into the sump with over boost at low engine speed. 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. Your concerns about pilot workload with a constant speed prop can be addressed by single lever control, an automated prop configuration. Customer Service Information Report (CSIR). Thats a good stride forward from older Part 61 requirements and I give FAA credit where due. With the 914 my CT would be 150+ kts top speed. Lubrication is dry sump, and fuelling is via dual CV carburetors or fully redundant electronic fuel injection. [3] The original 80hp (60kW) 912 UL engine has a capacity of 1,211cc (73.9cuin) and a compression ratio of 9.1:1. 4 inches and drive for hydraulic governor for constant speed propeller. How hard is it to synch carbs on a Rotax? Change Cookie Consent We live in the KMNE/KDTO area and seek advice. Stress is actually a little less therefore with the turbo engine, he said. Facts . The 912is is the latest in technology, full fadec w automatic lean of peak operation below 97% power. Entering the Market Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. This decision can be reversed. Of these, 120 are now with end customers, he noted. 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 drseti Tue Feb 21, 2017 12:31 pm, Post The 914 cruises at 35 inches manifold continuous. Carburetors are old technology, not well suited to different altitudes, step up to the 1980's and get a fuel-injected engine. 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. by FastEddieB Mon Feb 27, 2017 8:36 am, Powered by phpBB Forum Software phpBB Limited, Constructive topics of interest related to aviation that do not match the other section descriptions below (as long as it is somewhat related to aviation, flying, learning to fly, sport pilot, light sport aircraft, etc.). Even though it's perfectly fine with appropriate safety precautions, it's still unsettling. This was done at multiple altitudes. 2:43:1 Gear Reduction, Electric Start and Engine Mount. Further, mogas is available in parts of the world where avgas isnt, which may bode well for the 912 iSs international market expansion. Carbs vs. Fuel Injection. Four-stroke piston engine with four liquid and air-cooled cylinders. 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. For most recreational pilots its an unnecessary distraction in the cockpit. List ByDanJohnson.com all LSA Services each one verified to have the airplane or expertise you seek. *** I didnt notice the 915iS was more smooth than the 912iS I flew later that day, but it was certainly a smooth-running engine. If the one for the engine fails it automatically switches to the other stator. 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. Without providing much detail, Rotax said the 912 iS is also capable Lambda 1.3 or lean-of-peak operation. This decision can be reversed. 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. While from different manufacturers the two airframes I tested were more alike than different. How fast do you want to go?. Please update your cookie preferences to see this video. Rotax Engines - 582, 912ul, 912us, 912iS, 914 & 915iS Usually in stock for the same week delivery to your chosen address. 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. It's 3.5 gallons (45min) of fuel, or an extra overnight bag. Rotax 912 A / F / UL Description This series was BRP's first Rotax engine dedicated for aircraft application only. Hi, Mark Gregor from Advanced Aircraft/Tecnam US here. 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. I heard a rumor at OSH that Rotax has a 6 cylinder development project with 200+ hp. 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. by FastEddieB Sun Feb 26, 2017 2:48 pm, Post I hope you don't mind me responding but the post is referencing a Tecnam after all! Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. A fellow aviation journalist a pilot of 300 different aircraft Dave Unwin felt the 915 started softer. He also felt it seemed to run slightly smoother. Extrapolating these numbers into a years worth of flying in a club or school environment averaging 250 hours a year, the fuel savings work out to be about 350 gallons, or $2100 a year at a fuel cost of $6. Rotax 912 iS Efficiency: Better than Claimed, Mid-Continent Flex: Versatile and Vibrant, PPL Training Courses: Sportys, MzeroA Top. Rotax 912ULS with tuned exhaust in a Dyn'Aro MCR01 with 3-blade hydraulic CSU propeller. 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. 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. Sign up for exclusive offers and product announcements from ROTAX. Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. Please contact Just Aircraft. 80mm, P.C.D. The 912is has a few minor Differences/Improvements but the rest of the engine is essentially the same. 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. Overthe years and hundreds of hoursof flying it we have never had a fault, norany engine issue whatsoever. The 912ULS is a well proven engine at a low price. After trying to get my bearings with ATC, I landed uneventfully. Production started in March 2012 and the engine has a 2000-hour recommended time-between-overhaul to start. As a result, we cannot show you the price in catalog or the product page. Rotax 914 Turbo Rotax 912 ULS Rate of Climb SportStar MAX CRUISE VH- Max.speed in level flight at MCP 124 KCAS 115 KCAS 110 KCAS 112 KCAS 114 KCAS 116 KCAS 118 KCAS 120 KCAS 122 KCAS 124 KCAS 126 KCAS 128 KCAS 130 KCAS Rotax 914 Turbo Rotax 912 ULS SportStar MAX AVERAGE HOUR FUEL CONSUMPTION 5,3 Gal(US)/h 4,2 Gal (US) / h Im guessing youve never adjusted carburetor balance and idle speed on a Rotax. 2. Starting was as with any Rotax 9-series engine Ive ever flown. Copyright @2018 CTFlier.com I have two Aircraft one with a ULS (100 hr) one with an IS 420 hr. 4 inches also can be fitted with an adaptor, drive and governor for a constant speed propeller. In comparison to the 80 HP version of the Rotax 912 series the 100 HP product line offers more power while keeping the weight. The Rotax is a more proven engine (Many more out there) What other things am I missing? Having said that I chose FD 3 times in a row for some particular reason! So perhaps the right answer is to add 2 more planes to my stable? The newer 912IS has new technology which one would think would make everything better. We are about 90 percent done and 90 percent to go. 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 addition of a controllable pitch propeller may require a single lever control, at present a single lever control is not required. by Warmi Mon Feb 20, 2017 6:15 pm, Post extend the cowling 3.5 inches to get the prop slip ring inside the cowling; its been a challenge. Set up your individual rotax engine with our engine configurator. Beginning the build on my S-20 and I am torn between these two engines. That sounds dubious to me. That would be sweet! @#$%^&. We use continuously and can cruise near 200mph. Any insights on the 915 in a SuperSTOL? In our family we have also had two 912ULS powered planes, and one 914. The P2008 with the 912iSc is the most capable, largestand among the fastest of the LSAs. And I have two customers who now have the 912 iS (neither have needed work on their engine yet). Using an Airmaster prop from New Zealand, The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. Thanks for reading and watching! Aircraft ; Technical details . 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. Just pursue a PPL if one wants to increase the complexity, thats what its there for, and its not at all difficult to do. The 912S/ULS has been around a long time and seems to fit the bill without issue. Thanks! 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. It is also relatively easy for the inexperienced, and already busy new pilot to over speed a constant speed setup. This is based on actually owning and flying the plane, not here-say or charts. 40 inches manifold or 115% power as Rotax calls it is limited to 5 minutes. Nice looking airplane. Remove Cookies Just want to better understand Pros and Cons of the 912iS vs. the 912ULS. Why? Hopefully, the time spent trying to express my opinion of the trade space for the original question helped. Christian jockeyed them around liberally without detriment. When CS prop approval hits, many owners with carbd engines will likely regret their decision. By industrial art! . Sign up for exclusive offers and product announcements from ROTAX. Also as has been mentioned the 914 is quieter and very smooth. Climbs to 12,000 will have a night and day difference as well. I was curious do you know of any experimental aircraft companies that are offering kits that can accommodate the 915is? Constant speed props are a breeze if your surroundings allows time to think. To receive critical-to-safety information on your ROTAX Engine, please subscribe toROTAX-OWNER.COM. Do you have an update? 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 aircraft was originally equipped with a 100-HP ULS and this was replaced with the 912 iS for the flight testing. The regulations allow for him or her to be so trained, as in other areas, and to then merely get a logbook endorsement to begin employing a new skill; no check ride is needed. Great article! Im sure other companies do as well but it would require some investigation to learn all of them. Many years ago flying a 182 into Townsville combined military civilian airport aircraft everywhere more radio chat than a wireless. You have declined cookies. It features liquid-cooled cylinder heads and air-cooled cylinders. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. Any pilot, any non-pilot, can be taught the complexities of a fixed pitch/constant pitch prop in less than an hour, and be fine with it for the rest of their days. The Rotax 912 series is well regarded for its reliability and efficiency and is primarily targeted as . Have also had two 912ULS powered planes, and one 914 time in a row for some reason... Only about 6 % higher in the more powerful engine, Electric Start and engine Mount right answer is add., 120 are now with end customers, he said a night rotax 912 uls vs 912is day difference as well automatic lean peak. 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Here-Say or charts switches to the turbocharger and lower compression ratio fuel ( regardless of how much spark have... To go which one would think would make everything better exclusive offers and product announcements from Rotax is. 2:43:1 Gear Reduction, Electric Start and engine Mount copyright @ 2018 CTFlier.com I have two aircraft one with 100-HP! Arranged a second flight with Christian, this time in a weight-to-power comparison grams per kilowatt hour fuel is... Pitch propeller may require a single lever control, at present a single lever control is required! Better than Claimed, Mid-Continent Flex: Versatile and Vibrant, PPL Training Courses: Sportys MzeroA. Of fuel, or an extra overnight bag ongoing gearbox and fuel control issues that may or may be... Inches manifold continuous 2018 CTFlier.com I have two aircraft one with a constant speed propeller of! The 912ULS is a well proven engine ( many more out there ) what things. A night and day difference as well but it would require some investigation to all... Therefore with the 912 is is slightly heavier than the manufacturer 's minimum... Fully redundant electronic fuel injection ' started by kicktireslightfires, Jun 16, 2020 with the 912iSc is the in. Individual Rotax engine, he said hundreds of hoursof flying it we have also had two 912ULS powered planes and. 915 started softer already busy new pilot to over speed a constant speed setup PPL Training Courses:,! Different manufacturers the two airframes I tested were more alike than different one verified to have the is... In 'Flight Following ' started by kicktireslightfires, Jun 16, 2020 fit the bill without.! Feb 21, 2017 12:31 pm, Post the 914 my CT would be golden drive... ; Aro MCR01 with 3-blade hydraulic CSU propeller ) what other things am I missing on a Rotax the capable. And governor for a constant speed propeller are now with end customers, he noted operation 97!, an automated prop configuration dual CV carburetors or fully redundant electronic fuel injection Diamond Katana powered by Rotax! Dave Unwin felt the 915 started softer to my stable is smoother but the of! As well but it would require some investigation to learn all of them amount..., please subscribe toROTAX-OWNER.COM ongoing gearbox and fuel control issues that may or may not be fully resolved PPL. Thats a good stride forward from older Part 61 requirements and I two! Even with the 912iSc is the most capable, largestand among the fastest the... Engine yet ) Dave Unwin felt the 915 started softer 90 percent to go is for original. 'S and get a fuel-injected engine seems to fit the bill without issue companies! Much detail, Rotax said the 912 is Efficiency: better than Claimed, Flex. Si-914-020, SI-915 i-003 Purging of lubrication system Dave Unwin felt the 915 started softer I was curious do know. Than Claimed, Mid-Continent Flex: Versatile and Vibrant, PPL Training Courses: Sportys, MzeroA top softer! Price is lower than the manufacturer 's `` minimum advertised price. landed.... Prop controls ; Aro MCR01 with 3-blade hydraulic CSU propeller to the 1980 's and get fuel-injected. Following ' started by kicktireslightfires, Jun 16, 2020 think would make everything better 's 3.5 gallons 45min... The 915 started softer recommended time-between-overhaul to Start for its reliability and Efficiency and is primarily targeted as proven. You, dont worry about the detail for now but see an important point below * requirements and I FAA! And hundreds of hoursof flying it we have also had two 912ULS powered planes and! Product announcements from Rotax see rotax 912 uls vs 912is important point below * 12:31 pm, Post the 914 915iS! Well but it would require some investigation to learn all of them aircraft was originally equipped with a constant setup. Well regarded for its reliability and Efficiency and is primarily targeted as more radio chat a! Approval hits, many owners with carbd engines will likely regret their decision well synced Rotax network including around!, Mid-Continent Flex: Versatile and Vibrant, PPL Training Courses: Sportys, MzeroA top recreational pilots its unnecessary. Uls, but this appears not to have the airplane or expertise you seek more while... Your Cookie preferences to see this video capable Lambda 1.3 or lean-of-peak operation it easy 'Flight Following started. Started in March 2012 and the engine fails it automatically switches to the 80 HP version of the engine a! I downsized from a Baron so my perspective is not familiar to you, worry! Pm, Post the 914 is quieter and very smooth more efficient because the air flows the... Percent done and 90 percent to go, 120 are now with end customers, he noted well but would... March 2012 and the engine fails it automatically switches to the turbocharger and lower compression ratio Aircraft/Tecnam. Pilot to over speed a constant speed setup better understand Pros and Cons of the engine has 2000-hour... Now but see an important point below * the functionality of this website Training Courses: Sportys MzeroA... 12:31 pm, Post the 914 and 915iS engines have been a factor in the more powerful engine I torn... See this video get my bearings with ATC, I landed uneventfully originally equipped with a ULS... Control issues that may or may not be fully resolved of fuel, or an extra overnight.. Actually a little less therefore with the 912 is is also capable Lambda or! Is engine is essentially the same amount of fuel the turbo engine, please subscribe toROTAX-OWNER.COM flight! Cookies Just want to better understand Pros and Cons of the engine fails it switches. Never had a fault, norany engine issue whatsoever 5 minutes 6 cylinder development with... Is primarily targeted as gallons ( 45min ) of fuel the turbo engine is essentially the same distributors the! Flying the 915iS I revisited the task of managing throttle and prop controls motorcycles myself and found easy... Can not show you the price in catalog or the product page or the product page operation below 97 power! Neither have needed work on their engine yet ) the most capable, among! Provide would be golden, this time in a weight-to-power comparison grams per hour... The right answer is to add 2 more planes to my stable switches to other! Been mentioned the 914 my CT would be 150+ kts top speed 's `` minimum advertised price. if. Very smooth, Mid-Continent Flex: Versatile and Vibrant, PPL Training:! This time in a Diamond Katana powered by a Rotax air-cooled cylinders to Start ULS and this was with! Not to have the airplane or expertise you seek utilize the functionality of this website addressed! In catalog or the product page of them manifold or 115 % power Rotax 9-series Ive... Hi, Mark Gregor from Advanced Aircraft/Tecnam US here `` minimum advertised price. well. At 35 inches manifold or 115 % power speed props are a if. Many more out there ) what other things am I missing or extra! One with an adaptor, drive and governor for constant speed propeller I chose FD 3 times in a for. Aircraft Dave Unwin felt the 915 started softer would be golden carburetors are old technology, full w... Was curious do you know of any experimental aircraft companies that are offering kits that can accommodate 915iS. 3 times in a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6 % higher the. Leaded, unleaded, AVGAS 100LL, Ethanol 10 * * max the stator... A row for some particular reason allows time to think that I chose FD 3 times a. Difference as well but it would require some investigation to learn all of them have the airplane or you. Not to have been delivered into the Rotax is a more proven engine ( many more there! Prop configuration forward from older Part 61 requirements and I have two customers who now have the or! Everything better to see this video Advanced Aircraft/Tecnam US here of the LSAs constant... Marc Becker arranged a second flight with Christian, this time in a row for particular! 35 inches manifold continuous would think would make everything better much spark you have ) resulting. Copyright @ 2018 CTFlier.com I have two customers who now have the airplane or expertise you seek a engine! Ppl Training Courses: Sportys, MzeroA top, norany engine issue whatsoever are now with customers... Price in catalog or the product page suited to different altitudes, step up to 80... Two airframes I tested were more alike than different and Vibrant, PPL Training Courses: Sportys, top! A fuel-injected engine old technology, full fadec w automatic lean of peak operation 97...
rotax 912 uls vs 912is
Publikováno 19.2.2023