Pilots love airplanes (duh!). Pilots also love engines, especially when they are truly powerful. So, perhaps Brazilian manufacturer Montaer made a market-savvy move by moving quickly to incorporate Rotax’s most potent engine, their 915iS producing 141 horsepower in a turbocharged and intercooled package. The result of Bruno de Oliveira‘s design work is MC01 915 as seen in the nearby photos and in more detail in the video below.
Other powerful engines are available, for example, the even-higher-horsepower Titan from Continental Aerospace. These powerplant designs are sharply different because the Rotax uses a smaller displacement and is physically more compact. The 9-series is also significantly less noisy and it boasts the latest technology from an engine builder cranking out thousands of engines a year (when counting the many non-aircraft engines the Austrian company makes).
I wrote that Bruno moved quickly. That’s because this is a new model, first introduced to Americans only last year.
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Oshkosh 2022 – Day 4… TAF’s Sling HW with Rotax 915 is a Big, Comfortable Lightplane
Somewhere, it seems like a group of light plane developers must have held a meeting and decided that low wing manufacturers needed to broaden their line to include high wings. A batch of new models has been unveiled or announced this year. (Article updated 2PM – 7/29 Fri — new image of the gorgeous taildragger; see below)
Did these builders not notice the industry already has a whole slew of popular high wing models? Some, like Flight Design’s CT series, has been a market leader since the beginning. Companies in the list below didn’t follow the leader then? Why now?
Of course, no such industry agreement happened. Each company examined their lines and chose individually to go forward with their designs. Honestly, they’ve all come out so recently they could not have coordinated such a broad launch in a single year even if they tried.
Nonetheless, here they are, one after another.
Rotax 915iS Proves a Winner — “Best Powertrain Concept in the Light-Sport Aviation Industry”
How does modern-day Rotax relate to the Wright Brothers? Here’s a trivia test for light aviation enthusiasts.
Answer: Both started out in the bicycle business.
A little over a year ago, the engine builder from Gunskirchen, Austria celebrated their 100th anniversary. Check this article that contains a link to a beautifully-presented history of the company. It also describes how the company got its name.
In production for more than 30 years, Rotax’s 9-series engine design was a significant departure from earlier aircraft engines.
The 9-series is physically smaller, uses liquid cooling, an electronic control unit, and a gearbox to change engine revolutions from 5,000 rpm to slower speeds that work for props. The 912 enjoys a much better power-to-weight ratio than familiar models such as Lycoming’s O-233. That veteran engine produces 100 horsepower (at 2300 rpm; higher power is available at increased revolutions) using 233 cubic inches of cylinder displacement.
American Ranger AR1 Gyroplane Embraces Rotax 915iS Power
You can call modern gyroplanes “wanna-be” helicopters if you want but that might miss a few important points.
First, a gyroplane can be flown by a Sport Pilot. Other than Part 103 ultralight version, a helicopter requires a higher certificate and that means a medical, at least BasicMed.
LAMA believes gyroplanes will be included in FAA’s revised LSA regulation from what is known at this time. That means they’ll be available ready-to-fly and prices are so much less than conventional helicopters that it’s not even comparable. Comparing the most deluxe fully-built gyroplane to even a used helicopter is a world apart. Finally, maintenance of a gyroplane is dramatically less than any helicopter.
Despite those differences, gyroplanes enjoy some of the same performance capabilities of a helicopter — other than vertical launch. Gyroplanes also work unusually well in wind conditions that might ground most other aircraft.
No wonder gyroplanes have enjoyed a huge run in space-tight European countries and have been growing steadily in the USA.
Swedish “Speed Monster” — Blackwing Plus Rotax 915iS Claims New Speed Record
Five years back at my favorite airshow in Europe — Aero Friedrichshafen — I could not pass the supersleek blue and black low wing from Sweden, my father’s ancestral home. A stunner, it caught my eye and that of everyone else such that taking pictures of it without people surrounding it was difficult.
During this coronavirus mess, Sweden has been in the news because authorities did not fully lock down the country. Some closures were recommended and certain folks (older, immune-deficient… you’ve heard all this repeatedly) were encouraged to self-isolate. Yet pictures show restaurants, streets, and other public venues with plenty of people. Sweden has had deaths, of course, every one of them tragic. Yet it will provide a good baseline with which to judge the effectiveness of lockdown procedures from draconian to… well, Swedish.
However, the greater freedom enjoyed by Swedes allowed an impressive flight only a few days ago.
Copperstate Day 2 — Big Crowds Plus Flying Sling TSi with Rotax 915 Power: Superb!
I have to admit my pleasant surprise. This tie-up of Copperstate and Buckeye Air Fair might be exactly what is needed to generate a major show in the Southwestern USA.
Let me be fair. Other West Coast aviation events have interesting qualities but none has ever risen to the level of AirVenture Oshkosh or Sun ‘n Fun. Those two dominate general aviation events. Both are “back East.”
With big pilot and aircraft populations in California, Arizona, and Washington, why have we no major shows in the West? No one I’ve asked can explain the riddle but could Copperstate Buckeye Air Fair be the right combination? Only time will tell yet on Saturday, crowds were as thick as Oshkosh, albeit in a much smaller area. City planners offered an airshow and lots for attendees to look at plus the Copperstate trade show alongside the Buckeye Air Fair gave the public close access to pilots operating all manner of light aircraft.
Speedy Sling TSi Powered by Rotax 915 — News from The Airplane Factory USA
When Rotax debuted their new 915iS engine at an Oshkosh press conference, Sling designer Mike Blyth raced forward at the end of the conference to closely examine the new power plant. It was clear to me this answered a creation he had in mind and now we can see the fruit of his ambition: the new Sling TSi.
Since the Rotax 915iS remains a powerplant that requires an in-flight adjustable prop, it cannot be used on a Light-Sport Aircraft, but TSi is based on The Airplane Factory’s Sling 4 four seater so kit-built it must be. More on the builder effort below.
For Oshkosh 2018, The Airplane Factory USA said, “[We are] excited to present the North American debut of the all-new Sling TSi! This kit is the airplane Sling fans have been waiting for!” The Southern California importer said TSi has all of the style, economy and practical utility of the Sling 4 but with more speed.
Flying the Rotax 915iS Aircraft Engine — Comparing to 912iS
April has been busy… starting with a week of Sun ‘n Fun; then a gathering of LSA seaplanes at my home airport the day after; followed by three days of Aero Friedrichshafen in Germany (it runs four days but I had to miss the first); concluding with a journalists-only event at Rotax Aircraft Engines. As a result, my posts to this website may be out of date order but the good news… I have lots to report.
I will cover many aircraft stories, but allow me to take the most recent first: flying the brand-new Rotax 915iS and comparing it to the 912iS, although not in the same airframe. Other than official Rotax pilots and select airframe builders, we were among the first to experience the powerful new engine from the world’s leading producer of engines for light aircraft.
First Impressions of 915iS
I flew in each aircraft with Rotax’s Christian Sixt, an American flight school-trained pilot with an impressive list of FAA certificates.
First Rotax 915iS Engines Arrive in USA; Shipped to Customers
As the 2018 flying season launches, a long-awaited powerplant from Rotax Aircraft Engines is beginning to arrive in the USA and to be shipped on to customers for installation.
Pilots and builders seeking more power can welcome the Rotax 915iS fuel-injected, turbo-charged, intercooler-equipped 135-horsepower engine. Talk about a kick in the pants!
The engine recently won certification for use on aircraft where such approvals are valuable.
“California Power Systems is proud to announce the first customer delivery of a Rotax 915iS going to Mark and Alina Pringle of Rocky Mountain Kit Planes to install in a Rans S-21 Outbound,” reported Bryan Toepfer, operations manager of CPS, an enterprise related to mail order behemoth, Aircraft Spruce.
“We have another one shipping today for a customer building a Just Aircraft SuperSTOL,” Bryan noted.
He continued, “Two more are on the way from Rotax in Austria to be installed in a couple of gyros.”
According to California Power Systems — a major supplier and service organization for Rotax — customer demand has been high.
Rotax 915 iS Light Aircraft Engine: Testing & Award
Surely all readers know that Rotax-brand engines dominate the light aircraft landscape. The company owns something like 75% or more of the global market and close to that in the USA. Some worthy competitors are keeping the pressure on, but Rotax continues forward. The engine-to-follow is their new turbo-intercooler-fuel injected 135-horsepower 915 iS variant.
Rotax Aircraft Engines first announced this new model at AirVenture 2015; see our video interview for details and go to the official 915 iS page for even more.
In the press conference where the engine was unveiled, many in the standing-room-only audience were airframe manufacturers. As soon as the management and engineering team was done presenting, they quickly swarmed over the powerplant. You could almost see the wheels turning in their minds as they contemplated how they could fit and use this machine in their aircraft.
That was almost two years ago — AirVenture Oshkosh is only about 75 days away!
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