Take Off TBM 12

{{Use dmy dates|date=April 2018}}

{{Infobox aircraft begin

| name = TBM 12

| image =

| caption =

}}{{Infobox aircraft engine

| type = Aircraft engine

| manufacturer = Take Off GmbH

| designer =

| national origin = Germany

| first run =

| major applications =

| produced =

| number built =

| program cost =

| unit cost = 10,300 (2015)

| developed from =

| variants with their own articles =

}}

The Take Off TBM 12 is an aircraft engine, designed and produced by Take Off GmbH of Hamm, Germany, for use in ultralight and homebuilt aircraft.Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, pages 262-263. Flying Pages Europe SARL, 2015. {{ISSN|1368-485X}}

Design and development

The TBM 12 engine is a twin-cylinder four-stroke, horizontally-opposed, {{convert|1185|cc|cuin|1|abbr=on}} displacement, air-oil-cooled, gasoline engine design, with a helical gear mechanical gearbox reduction drive with reduction ratios of 3.5:1, 2.58:1, 2.13:1 and 1.8:1. It employs electronic ignition and produces {{convert|115|hp|kW|0|abbr=on}} at 7200 rpm, with a compression ratio of 13.1:1.

The engine is based upon a BMW motorcycle engine design.{{cite web|url=http://www.takeoff-ul.de/motoren.htm|title=Motoren|access-date=19 April 2018|author=Take Off GmbH |work=www.takeoff-ul.de}}

The engine specifications carry a manufacturer's warning that the engine has not been tested, nor is certified for aircraft use, and that neither BMW nor Take Off accept any liability for aircraft use or consequential damages.{{cite web|url=http://www.takeoff-ul.de/pdf%27s/Description_TAKEOFF_engine_02-2006.pdf|title=two-cylinder four-stroke engine with spur gear and centrifugal clutch |access-date=19 April 2018|author=Take Off GmbH |work=www.takeoff-ul.de|year=2006}}

Specifications (TBM 12)

{{Pistonspecs

| ref = Tacke

| type = Twin-cylinder, four-stroke aircraft engine

| bore = {{convert|79|mm|in|1|abbr = on}}

| stroke = {{convert|59|mm|in|1|abbr = on}}

| displacement = {{convert|1185|cc|cuin|1|abbr = on}}

| length =

| diameter =

| width =

| height =

| weight = {{convert|73|kg|lb|1|abbr = on}}

| valvetrain =

| supercharger =

| turbocharger =

| fuelsystem =

| fueltype = gasoline

| oilsystem =

| coolingsystem = air-oil

| power = {{convert|115|hp|kW|0|abbr = on}} at 7200 rpm

| specpower =

| compression =

| fuelcon =

| specfuelcon =

| oilcon =

| power/weight =

| designer =

| reduction_gear = helical gear mechanical gearbox

| general_other =

| components_other =

| performance_other =

}}

See also

{{Aircontent

| see also =

| related = *Take Off TBM 11

| similar aircraft =

| lists = *List of aircraft engines

}}

References

{{Reflist}}