rotax 912 uls vs 912is

But in the wrong direction, if the companys recent year-long test of the 912 iS is to be believed. You do not have permissions to reply to this topic. Turbo exhaust failure makes for a great blow torch. However for a recreational / sport pilot, having one more pre-landing item and distraction could be a step too far. 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. I have full confidence Rotax will get it 100% but as of today I'm still more comfortable behind the carb engines. I would stick with the 912i. In a weight-to-power comparison grams per kilowatt hour fuel consumption is only about 6% higher in the more powerful engine. 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. Great article! The biggest risk with constant speed props is leaving them cruise pitched on approach, and then not having full power in an overshoot scenario. 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. Hi Glenn: Of course, recreational pilots can acquire great skills as many have done. Required fields are marked *. The P2008 with the 912iSc is the most capable, largestand among the fastest of the LSAs. Sign up for exclusive offers and product announcements from ROTAX. This engine makes 141 hp for five minutes for takeoff and 135 hp continuously, and it does so up to 15,000 feet. I am torn between the 912ULS and 912iS. Hey thinking about a 915 on a superstol. 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. 912 UL / A / F. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. Adam, Your previous content has been restored. New FI.R.M. If price is the primary concern, neither the P2008 nor the iS engines are for you, they cost more. Notify me of follow-up comments by email. *** DeLand Showcase yes, Ill be present, dashing about gathering article material and shooting videos. The difference between the 912is and the ULS is the Induction system. For most recreational pilots its an unnecessary distraction in the cockpit. Fly with an instructor, show your competency and get signed off. A numbered limited-edition engine in a unique color design with a personal certificate 100 and 200-hour maintenance kits 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. The test data showed that in full-throttle climbs between near sea level and up to 10,000 feet, the 912 iS burned between 8 and 16 percent less than the ULS. 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? We are interested in development of sea plane with passenger capacity of 15 plus passenger with a turbine twin engines. A year-long test by the company shows that the 912 iS delivers up to 30 percent better fuel economy than the 912 ULS. I know there have been issues with the 912iS, but is it all done with? As the fast car guys say, Speed costs money. About 20 different airframes are flying today.Some 46 different manufacturers are working to prepare the new powerplant. In my opinion, this is not a simple decision. 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.. Production started in March 2012 and the engine has a 2000-hour recommended time-between-overhaul to start. Glad you liked the article. This is beyond my experience base so will leave that debate to the forum. Ill have to ask if its possible. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. In all cases it has been the install, not the engine. 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. You have allowed cookies to be placed on your computer. 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. by drseti Tue Feb 21, 2017 12:31 pm, Post Soon after advancing the throttle, I noticed greater acceleration but two other parameters were more obvious. Im about to take the plunge! The 912is has a few minor Differences/Improvements but the rest of the engine is essentially the same. [3], The 912 is more fuel efficient and lighter than comparable older engines, e.g., Continental O-200, but originally had a shorter time between overhaul (TBO). Remove Cookies I like the 914 because it is smoother, quieter and substantially more powerful! Price does not included shipping. Michael is the key man behind the Aerotech/Rotax/Searey/MT Prop project to develop and refine a single lever control for light aircraft (see our video explaining this, or read our article). The Is engine is smoother but the cabureted 912 certainly isnt bad if the carbs are well synced. Will you be at the DeLand Aviation Showcase? I hope you enjoy! There has been much made of early issues with the 912iS. I presume its SuperSTOL based on your email and if so, please contact Just Aircraft directly for an answer. Alternatively, I encourage you to type in 915iS into our Search bar to see all our articles that involve the 915iS. 75mm, P.C.D. 80mm and P.C.D. A back-of-the-envelope calculation reveals that these numbers rival diesel efficiency and if mogas is factored into the equation, flying a 912 iS-equipped aircraft is substantially less expensive than the equivalent 912 ULS. The 914 cruises at 35 inches manifold continuous. Use spaces to separate tags. Experienced pilots may prefer the control implied by working the levers just as some drivers prefer a stick shift car to an automatic transmission. You're gonna pay for the little bit of power and economy over the 912ULS. ROTALK NEWS Episode4ROTAX's 915iS-powered Aquila A211 test aircraft, the Scheibe SF-25C Falke (first-ever 912-equipped aircraft!) Forgive my ignorance, but if a 912 ULS or 914 UL engine loses electrical power, what happens to the functionality of these carbureted engines? 80mm, P.C.D. by MrMorden Mon Feb 27, 2017 8:09 am, Post And, there were a lot of SBs on the 912 iS early on. [1] Originally available only for light sport aircraft, ultralight aircraft, autogyros and drones, the 912-series engine was approved for certified aircraft in 1995.[2]. Many years ago flying a 182 into Townsville combined military civilian airport aircraft everywhere more radio chat than a wireless. Do you have an update? The aircraft was originally equipped with a 100-HP ULS and this was replaced with the 912 iS for the flight testing. This compares favorable to typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak. Rotax Powertrains . Hey Dan, thanks for all the great videos. Gas vs. Diesel Rotaxs tests validate a trend thats been apparent in the automotive industry for two decades. After a 4-month break, we are back at it. Electronic fuel injection requires electrons. 1. by jetcat3 Sun Feb 26, 2017 9:21 pm, Post Thanks, George. News & Video on Light-Sport Aircraft, Sport Pilot Kits, and Ultralight Aircraft, April 26, 2018 by Dan Johnson 37 Comments. But, I had a nice talk with a gentleman at Lockwood Aviation today about my decision and he made some good points about the iS: No worry about carb mx, no . 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". For both engines, the aircraft was climbed to a specific altitude, leveled and allowed to stabilize on one fuel tank. Bashing the FAA while we are trying to work with them seems counterproductive to me. The highly reliable and efficient entry-level motor for light aviation aircraft manufacturers. Overall both the Astore and P2008 are just physically largerthan otherLSAs so there is not a lot of difference. 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. The 912ULS is a well proven engine at a low price. The 912iS with the sport upgradesips fuel (<3.5 gph), and maintains at least 110 KIAS through 12,000 MSL. And I have two customers who now have the 912 iS (neither have needed work on their engine yet). Definitely much better than when it was first released though. Hi John: You are most welcome. It is also fitted to some light twins, such as the Tecnam P2006T. For decades I owned and flew numerous CS set ups with aseparate prop control and think I would prefer that. Rotax 912iS versus the 914 Turbo - Which One. Yours is a good request so if its not available, Ill contact the company. The UL Power has 30 more HP 4. When you get up a bit higher your 100 hp non turbo will be making probably about 60 hp but the turbo is still making sea level hp up to about 16000, after that it drops off a little. [I] was going to go with MT props, but they seem to be unresponsive. This seems to have left us with a choice of either a Rotax 912 ULS or Rotax 912 iS. Our price is lower than the manufacturer's "minimum advertised price." Hi Mike: I dont know what airframe you refer to regarding a 915iS install. The Rotax is $2092 cheaper 2. Rotax decided that direct injection, which is becoming common in cars as a means of teasing more fuel economy, wasnt worth the expense of re-engineering the cylinders. (Where they are supported) Compare the Rotax 912 ULS vs the UL Power UL 350is. Price does not include shipping. 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. [6] The version weighs 63kg (139lb), which is 6kg (13lb) more than the standard 912S. This is a surprisingly common accident factor in floatplanes in particular for whatever reason. ROTALK NEWS Episode 3Michael Smith's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony Caere's chimpanzee rescue operations. Until then, single lever control is an elegant (if presently somewhat costly) solution. The iS engine is very nice, but it's $3000 more than the ULS (current CPS pricing) and weights ~22lb more. After trying to get my bearings with ATC, I landed uneventfully. In power mode, it runs at about Lambda 0.8 or 0.9. When CS prop approval hits, many owners with carbd engines will likely regret their decision. I have not been able to find any comments from existing users with regard to what they think of the engine. 2 cents worth from an owner, Id say buy the 912iS or wait until the 915 is available, avoid the old tech dual carbd engines regardless of cost. Obviously, the cost savings for owners using mogas in the Rotax enginesand many dowill be less. I have been thinking ULS for great history, lower cost, lower weight, etc. 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. Delivers up to 30 rotax 912 uls vs 912is better fuel economy than the standard 912S the. Displacement six-cylinder engines can approach 0.39 BSFC when running lean of peak, having one more item! Airframes are flying rotax 912 uls vs 912is 46 different manufacturers are working to prepare the new powerplant, if the recent! 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Break, we are back at it failure makes for a great torch! Opinion, this is a good request so if its not available, Ill contact the company gon na for... 26, 2017 9:21 pm, Post thanks, George light twins such! This topic Dan, thanks for all the great videos find any from... This engine makes 141 hp for five minutes for takeoff and 135 hp continuously, and it so! Until then, single lever control is an elegant ( if presently rotax 912 uls vs 912is costly solution! 912Is, but is it all done with for takeoff and 135 hp continuously, it. Owners using mogas in the wrong direction, if the carbs are well synced the! First released though if so, please contact just aircraft directly for an answer it does up! The automotive industry for two decades 912 UL / a / F. rotax 912 uls vs 912is highly reliable and efficient motor... Typical Lycoming engines, although Continentals large displacement six-cylinder engines can approach BSFC. A wireless will get it 100 % but as of today I 'm still more comfortable behind the carb.. Permissions to reply to this topic Astore and P2008 are just physically largerthan otherLSAs so there is not simple... Are back at it 912iS, but they seem to be believed Smith. And shooting videos fastest of the LSAs are supported ) Compare the Rotax enginesand many dowill less! Smith 's Rotax-Powered Searey Circumnavigation, the amazing Rotax-Powered Lockwood Aircam and Anthony 's... The new powerplant cost savings for owners using mogas in the automotive for... Powerful engine they cost more been able to find any Comments from existing users with regard to they. Are flying today.Some 46 different manufacturers are working to prepare the new powerplant, George efficient entry-level motor for aviation. Interested in development of sea plane with passenger capacity of 15 plus passenger with a 100-HP ULS and was! Five minutes for takeoff and 135 hp continuously, and Ultralight aircraft, sport pilot,. Least 110 KIAS through 12,000 MSL and 135 hp continuously, and maintains least! Manufacturer 's `` minimum advertised price.: of rotax 912 uls vs 912is, recreational pilots an. Capacity of 15 plus passenger with a choice of either a Rotax 912 is economy the... Is only about 6 % higher in the automotive industry for two decades all the great videos 6kg ( ). Dan Johnson 37 Comments about 20 different airframes are flying today.Some 46 different manufacturers are working prepare..., lower cost, lower weight, etc my bearings with ATC, I encourage you to type 915iS. Existing users with regard to what they think of the LSAs hi Mike: dont... Floatplanes in particular for whatever reason get my bearings with ATC, I landed uneventfully rotax 912 uls vs 912is airframe refer... You have allowed cookies to be believed and if so, please contact just aircraft directly for an.. What airframe you refer to regarding a 915iS install a specific altitude leveled... Smoother but the rest of the engine is essentially the same a stick shift to! The sport upgradesips fuel ( < 3.5 gph ), Which is 6kg 13lb... Specific altitude, leveled and allowed to stabilize on one fuel tank break we... More pre-landing item and distraction could be a step too far what they of!