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? Having said that I chose FD 3 times in a row for some particular reason! The 914 cruises at 35 inches manifold continuous. Hopefully, the time spent trying to express my opinion of the trade space for the original question helped. We are about 90 percent done and 90 percent to go. 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. by FastEddieB Sun Feb 26, 2017 2:48 pm, Post This decision can be reversed. and ROTAX factory in Gunskirchen, Austria. If the one for the engine fails it automatically switches to the other stator. Marc indicated that 200 915iS engines have been delivered into the Rotax network including distributors around the globe. Dan, thank you. * 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. The 914 is a mature design but the turbo can be additional maintenance if a few basic care rules are not followed. Gas vs. Diesel Rotaxs tests validate a trend thats been apparent in the automotive industry for two decades. 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. Beginning the build on my S-20 and I am torn between these two engines. Even though it's perfectly fine with appropriate safety precautions, it's still unsettling. It got me thinking - The 912iS is Fuel Injected, the 914 is turbocharged but is back to dual carbs. Rotax's 915iS uses the same displacement as the 912iS. You can post now and register later. Aircraft Installation Instructions, SI-912 i-004, SI-912-018, SI-914-020, SI-915 i-003 Purging of lubrication system. Just my 5cents worth. Price does not included shipping. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) I flew in each aircraft with RotaxsChristian Sixt, an American flight school-trained pilot with an impressive list of FAA certificates. As a result, my posts to this website may be out of date order but the good news I have lots to report. 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. Rotax engine experts felt most of this is attributable to software and the same code can also be applied to the 912iS. I was curious do you know of any experimental aircraft companies that are offering kits that can accommodate the 915is? Late to this party, I fly constant speed props and appreciate them. And I have two customers who now have the 912 iS (neither have needed work on their engine yet). Then dont run the engine when adjusting - start , test, stop, adjust, start ,test etc. I am torn between the 912ULS and 912iS. News & Video on Light-Sport Aircraft, Sport Pilot Kits, and Ultralight Aircraft, April 26, 2018 by Dan Johnson 37 Comments. You can have separate throttle and mixture controls. Simply stated the planes already pricey,so in my opinion, opting for the injected engine makes sense for a variety of reasons, and at this price point the cost shouldnt be the primary consideration. Overthe years and hundreds of hoursof flying it we have never had a fault, norany engine issue whatsoever. Discussion in 'Flight Following' started by kicktireslightfires, Jun 16, 2020. As you can see in the nearby images, it provides, among other information, a percentage of throttle, fuel burn, and engine revolutions plus prop speed expressed via manifold pressure. 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.. 2:43:1 Gear Reduction, Electric Start and Engine Mount. The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. The new Rotax 915 iS engine presents an interesting alternative to the economical Rotax 912 ULS or the Continental Titan XIO-340. A year-long test by the company shows that the 912 iS delivers up to 30 percent better fuel economy than the 912 ULS. In all cases it has been the install, not the engine. You must have JavaScript enabled in your browser to utilize the functionality of this website. Depending on the core credit assigned to the engine at TBO, that could pay for the overhaul and then some. After trying to get my bearings with ATC, I landed uneventfully. If Mitters test data is confirmed by real-world results, they may well be proven right. 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. I concur with Andy. For most recreational pilots its an unnecessary distraction in the cockpit. Copyright @2018 CTFlier.com In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. The new Sport Pilot rule makes flying affordable! You have allowed cookies to be placed on your computer. You do not have permissions to reply to this topic. This is a surprisingly common accident factor in floatplanes in particular for whatever reason. Looking forward to the fewer pneumatic synchronizations! This decision can be reversed. 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. 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. Reconsider Cookies This engine makes 141 hp for five minutes for takeoff and 135 hp continuously, and it does so up to 15,000 feet. Hi Mike: I think a 915 in SuperSTOL would be awesome but I dont know if they are working on this or not. It just depends on what you want. Perfected 4-stroke engine with full take-off power and engine management system. Display as a link instead, At altitudes needed for California cruising there's a 20kt difference. Ill leave this forum to the CT crowd who know that very capable airframe. Rotax Powertrains . 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. Lets do the same thing for increased weight, complex, and night. The electronic fuel injected Rotax 912iS is a recent development. I found the engine to fly flawlessly in my experience and powerfully! any and all info you can provide would be golden. 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 . Thanks again, love all the interviews and flight videos. The 2008 is a bit longer and larger than the Astore and thus handles turbulence and cross wind landings a bit better. by FastEddieB Mon Feb 27, 2017 8:11 am, Post Greaser! 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. by MrMorden Tue Feb 21, 2017 10:23 am, Post Learn how your comment data is processed. It can do what the 912 can't and you could really use it because you are surrounded by mountains. extend the cowling 3.5 inches to get the prop slip ring inside the cowling; its been a challenge. The 912iS with the sport upgradesips fuel (<3.5 gph), and maintains at least 110 KIAS through 12,000 MSL. Mitters test work focused on a side-by-side comparison in a Tecnam P92, which is considered a VLA under European rules. by Warmi Mon Feb 20, 2017 6:15 pm, Post The engine nearly stopped and a quick scan hit the pitch control and dumped some flap and away we went. 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. Just want to better understand Pros and Cons of the 912iS vs. the 912ULS. Thanks, George. What make and model of turbocharger does Rotax use on the 914 and 915is engines? All rights reserved. Reconsider Cookies kicktireslightfires, Jun 16, 2020 #1 Ghery Touchdown! The lightest engine in the Rotax aircraft engine portfolio. 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. It is true that the 115 hp is available for five mins. During our factory tour at Rotax, we politely told the engineers we would reserve judgment until the engine hits the field. Constant speed props are a breeze if your surroundings allows time to think. Im about to take the plunge! Notify me of follow-up comments by email. [7], On 1 April 2014 the company announced its new 912 iS Sport upgrade with greater power and torque and reduced fuel consumption. 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. Roger Lee LSRM-A & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield (KRYN)520-349-7056 Cell. Such an aircraft is far outside our area of reporting. You do not have permissions to reply to this topic. 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. This is beyond my experience base so will leave that debate to the forum. 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. [I] had to build a shelf behind the firewall to accommodate the gizmos associated with the 915. hoping it will be good choice. The addition of a controllable pitch propeller may require a single lever control, at present a single lever control is not required. The manual adds that non-compliance with such warnings could lead to serious injury or death.[10]. 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. On the other hand, pilots always seem to like more power so they may add that engine in time. With the 914 my CT would be 150+ kts top speed. [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. The newer 912IS has new technology which one would think would make everything better. Rotax Genuine Parts for Aircraft engines Flyer, Engine with propeller speed reduction gearbox i = 2,43 with overload clutch, Four-stroke piston engine with four liquid- and air-cooled cylinders, Redundant electronic fuel injection and ignition, eco mode, EMS and propeller speed reduction gearbox, Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappets, Customizable version available (engine comes with neutral black covers and without logo branding, ready to get your very individual design), A numbered limited-edition engine in a unique color design with a personal certificate, ROTAX CARE extended warranty protection up to TBO (only if allowed under applicable law), Four-stroke piston engine with four liquid and air-cooled cylinders. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. which has a control box. But the CTLSi has some add ons, including electric trim and the li-ion battery. With the CS prop onit, itwill likely be the fastest of all of the LSAs and the fit, finishand refinement of this airplane is beyond compare. ROTAX 912IS AVAILABLE FOR SALE Rotax 912IS for sale motor was purchased for an aircraft kit project but was never finished motor was installed and ran but as never flown. I think LSA/SLSA is the way I want to go and am trying to figure it out. The UL Power has fuel injection 3. Instead of being a mouthpiece for the arcane and idiotic FAA and old iron airplane society why dont you step up and do the right thing. The Rotax 912 was first sold in 1989 in non-certificated form for use in ultralights and motorgliders. Eighteen months later, it has and just as we suspected, Rotaxs initial claims were off the mark. [3] On the 912A, F and UL the standard reduction ratio is 2.27:1 with 2.43:1 optional. Toying with the idea of adding a second aircraft to my stable. To get below 3 gph, a surprisingly low consumption rate, speed dropped below100 knots true or 85 indicated. I responded to the specific question about purchasing a P2008 with the 912iS or the 914 in a P2008. Naturally, he is also intimate with the 915iS. The iS costs more to buy and you should make sure who ever is going to maintain it is trained and has the equipment. Mitter said the test protocol called for trials on days of similar temperatures and density altitudes and defined run periods. 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). I used to synch the carbs on motorcycles myself and found it easy. The discussion forum for Sport Pilots and Light Sport Aircraft, Post The Rotax 912 series is well regarded for its reliability and efficiency and is primarily targeted as . Then the fuel source was switched to a second tank and the consumption precisely measured on the ground after exactly an hour of flight. We expect the 912 iS overhaul costs to be higher than the ULS, but we dont yet know how much higher. 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. by FastEddieB Mon Feb 27, 2017 7:35 am, Post The aircraft was originally equipped with a 100-HP ULS and this was replaced with the 912 iS for the flight testing. The price for the diagnostic software/interface is close to $1000. Thanks! 912S/ULS vs 912IS by John Redman in General Tech Discussion 6 years ago Beginning the build on my S-20 and I am torn between these two engines. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. You have declined cookies. Regardless all the electrical power to run the engine comes from the engine. I hope you enjoy! 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. 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. Prices shown are in USD. FAA Regulation Update Fall 2022. Thats a good stride forward from older Part 61 requirements and I give FAA credit where due. 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 912ULS is a well proven engine at a low price. 4 inches also can be fitted with an adaptor, drive and governor for a constant speed propeller. Flying the new 915iS in an Aquila light aircraft. You're gonna pay for the little bit of power and economy over the 912ULS. What the refreshed experience told me is that FAA was right to say this is unnecessarily complex for recreational pilots. Hi Bill: You are correct. With the 912i my CT would be 127+ kts top speed. Of these, 120 are now with end customers, he noted. 912 UL / A / F 80 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. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. (You must log in or sign up to reply here. However, syncing them won't fix the fact that they tend to run rich as hell no matter what you do. 4 inches and drive for hydraulic governor for constant speed propeller. JavaScript seems to be disabled in your browser. According to www.airnav.com, mogas averages about $4.68 as of June 2013. Definitely much better than when it was first released though. Overall both the Astore and P2008 are just physically largerthan otherLSAs so there is not a lot of difference. Although I loved the power of the 915iS with its shortened takeoff roll, thrilling climb to altitude, low-speed fuel economy, and quiet running, the 912iS ismore my kind of engine. you mean confidence because its well known? The difference between the 912is and the ULS is the Induction system. Rotax 912 S/ULS. By using our website, you agree that we can place these types of cookies on your device. That being said, my next personal aircraft WILL have a 912 iS engine and I will buy the BUDS Level 2 service kit. Set up your individual rotax engine with our engine configurator. The Astore is not hard to get in and out of but just not as easy as the 2008. As yourself this question.. There has been much made of early issues with the 912iS. 80mm and P.C.D. I'm always reluctant to be a first adopter of new aircraft engine technology. When I hear negativity about the 914 it is nearly always from someone who has never flown behind one. Please update your cookie preferences to see this video. I've yet to dig through the manual, guys, but I think Andy nailed it. The 912is has a few minor Differences/Improvements but the rest of the engine is essentially the same. *** DeLand Showcase yes, Ill be present, dashing about gathering article material and shooting videos. The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. Your concerns about pilot workload with a constant speed prop can be addressed by single lever control, an automated prop configuration. 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. But, then, I have never flown nor been a passenger in a single lever set up so By the way, the P2008 is a beautiful plane, as you know. * leaded, unleaded, AVGAS 100LL, Ethanol 10** max. Experienced pilots may prefer the control implied by working the levers just as some drivers prefer a stick shift car to an automatic transmission. [I] was going to go with MT props, but they seem to be unresponsive. Christian jockeyed them around liberally without detriment. In a four-cylinder, high-RPM geared engine, that sounded like an overpromise. 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. [8] A further derivative, the 135hp (101kW) Rotax 915 iS, was announced in July 2015.[9]. Stress is actually a little less therefore with the turbo engine, he said. 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. Got it, thanks for clarifying. Set up your individual rotax engine with our engine configurator. 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. Lubrication is dry sump, and fuelling is via dual CV carburetors or fully redundant electronic fuel injection. 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. I had some issues with gearbox, however all corrective work was in warranty. The Rotax is $2092 cheaper 2. Surprisingly though, I'd say the 914 UL is the smoothest out of the all of them. 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. Ive been flying a P2008 with the 912iS for over 3 1/2 years out of CA, in the mountains. However for a recreational / sport pilot, having one more pre-landing item and distraction could be a step too far. An Astore with 912iS and a P2008 with the 914 :-). I know there have been issues with the 912iS, but is it all done with? Rotax 912ULS with tuned exhaust in a Dyn'Aro MCR01 with 3-blade hydraulic CSU propeller. by drseti Tue Feb 21, 2017 12:31 pm, Post Rotax 912 iS Efficiency: Better than Claimed, Mid-Continent Flex: Versatile and Vibrant, PPL Training Courses: Sportys, MzeroA Top. Hi Drew: Thanks for your kind words. This decision can be reversed. This was done at multiple altitudes. Glad it was a VFR flight in good weather. Pasted as rich text. It's not terribly difficult or time consuming. There was a place making a manual mixture control for the Bings, but I've recently heard some pretty disturbing reports of issues with the new version and their lack of support. Fuel needs of both 915iS and 912iS are essentially the same. I like the technical details. Rotax aircraft engine manager Marc Becker arranged a second flight with Christian, this time in a Diamond Katana powered by a Rotax 912iS. Sign up for exclusive offers and product announcements from ROTAX. All three Rotax engines are offered by Tecnam because we believe they are all good viable choices. 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. Originally equipped with carburetors, later versions are fuel injected. No other modifications were done, according to Mitter, other than fuel plumbing. For that question Im a firm advocate of the injected engine. 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. Where can I see fuel burn/altitude charts for the 915is engine? We are interested in development of sea plane with passenger capacity of 15 plus passenger with a turbine twin engines. Takeoff roll is substantially reduced. Yours is a good request so if its not available, Ill contact the company. It is more than most sport pilots may prefer and more than some should manage perhaps. 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.
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