Rotax 912, Rotax 914: Pilot's Guide to ROTAX Aircraft Engine Maintenance 2007 FAA Fed Aviation Admin

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• published: 05 Mar 2015
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more at http://scitech.quickfound.net/aviation_news_and_search.html "How to maintain, set up and operate your Rotax 9-series engine" (Rotax 914 and Rotax 912). Federal Aviation Administration Sun 'n Fun 2007 - Guide to Rotax Aircraft Engine Maintenance with Phil Lockwood. Lockwood runs "the largest repair facility for Rotax engines in the whole United States." I don't usually post lecture/talking head type videos, but this one is loaded with useful information. Public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original). http://creativecommons.org/licenses/by-sa/3.0/ http://en.wikipedia.org/wiki/Rotax Rotax is the brand name for a range of internal combustion engines developed and manufactured by the Austrian company BRP-Powertrain GmbH & Co KG (until 2008 BRP-Rotax GmbH & Co. KG), in turn owned by the Canadian Bombardier Recreational Products. Rotax four-stroke and advanced two-stroke engines are used in a wide variety of small land, sea and airborne vehicles. Bombardier Recreational Products (BRP) use them in their own range of such vehicles. In the light aircraft class, in 1998 Rotax outsold all other engine manufacturers combined... History The company was founded in 1920 in Dresden, Germany as ROTAX-WERK AG. In 1930, it was taken over by Fichtel & Sachs and transferred its operations to Schweinfurt, Germany. Operations were moved to Wels, Austria in 1943 and finally to Gunskirchen, Austria in 1947. In 1959, the majority of Rotax shares were taken over[4] by the Vienna-based Lohner-Werke, a manufacturer of car and railway wagon bodies. In 1970, Lohner-Rotax was bought by the Canadian Bombardier Inc. The former Bombardier branch, Bombardier Recreational Products, now an independent company, uses Rotax engines in its ground vehicles, personal water craft, and snowmobiles... http://en.wikipedia.org/wiki/Rotax_914 The Rotax 914 is an Austrian turbo-charged, four-stroke, four-cylinder, horizontally opposed aircraft engine with air-cooled cylinders and water-cooled cylinder heads. Designed and built by Rotax the engine commonly powers certified light aircraft, homebuilt aircraft, autogyros and military UAVs such as the MQ-1 Predator. http://en.wikipedia.org/wiki/Rotax_912 The Rotax 912 is a normally aspirated, air- and water-cooled, horizontally opposed four-cylinder, four-stroke, gear reduction-drive engine commonly used on certified aircraft, light sport aircraft, ultralight aircraft and unmanned aerial vehicles. Rotax produced its 50,000th 912-series engine in 2014... Development The original 80 hp (60 kW) 912 engine has a capacity of 1,211 cc (73.9 cu in) and a compression ratio of 9.1:1. The later 912S is enlarged to 1,352 cubic centimetres (82.5 cu in) and has a compression ratio of 10.4:1, yielding 100 hp (75 kW). The 912 A and F are used in certified aircraft, such as the Diamond DA20, which is quite popular in Europe. The 100 hp (75 kW) versions are used in many light sport aircraft, such as the Zenith STOL CH 701 and the Tecnam P2002 Sierra. The 80 hp (60 kW) versions are sufficient to power the new generation of efficient motorgliders, such as the Pipistrel Sinus and the Urban Air Lambada. It is also fitted to some light twins, such as the Tecnam P2006T. The engine differs from conventional aircraft engines (such as the Lycoming O-235) in that it has air-cooled cylinders with liquid-cooled heads and uses a 2.43:1 gearbox (PSRU) to reduce the engine's relative high 5,800 rpm shaft speed to a more conventional 2,400 rpm for the propeller. Lubrication is dry sump, and fuelling is via dual CV carburetors or fully redundant electronic fuel injection. The electronic fuel injected Rotax 912 is a recent development. Early 912 series engines have a shorter time between overhaul (TBO) than traditional engines, but are more fuel efficient than similarly sized engines, e.g., Continental O-200. Effective 14 December 2009, 912 engines have had their recommended Time Between Overhauls (TBO) raised from 1,200 hours to 1,500 hours, or 1,500 hours to 2,000 hours, depending on serial number. In addition to the lower fuel consumption they are certified to run on automotive fuel (mogas), further reducing running costs, especially in areas where leaded AVGAS is not readily available... On 8 March 2012 the company displayed its 912 iS variant, a 100 hp (75 kW) version with direct fuel injection and an electronic engine management unit...