Better Half VW
{{Short description|American aircraft engine}}
{{Use mdy dates|date=January 2022}}
{{Use American English|date=January 2022}}
| {{Infobox aircraft begin
| name=Better Half VW | image= | caption= }}{{Infobox Aircraft Engine |type=Aircraft engine |manufacturer=Better Half |designer=Leonard Milholland |national origin=United States |first run=1993 |major applications=Milholland Legal Eagle |produced= |number built= |developed from=Volkswagen air-cooled engine |variants with their own articles= }} |
The Better Half VW is an American aircraft engine, designed by Leonard Milholland of Brookshire, Texas, in 1993 for use in ultralight aircraft. The engine is supplied in the form of plans for amateur construction.Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011–12, pages 238-239. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X{{cite web|url = http://www.betterhalfvw.com/engine.htm|title = The Better Half VW Engine|accessdate = 10 July 2015|last = Milholland|first = Leonard|work=betterhalfvw.com|year = 2002}}
Design and development
The engine is a twin cylinder four-stroke, horizontally-opposed air-cooled, direct-drive gasoline engine design based on the Volkswagen air-cooled engine. It employs coil ignition and produces about {{convert|30|hp|kW|0|abbr=on}}. Unlike other half VWs this design does not require cutting the engine block in half, but instead blanks the two aft cylinders and removes the pistons.
The design has evolved over time, incorporating improvements to reduce complexity and improve reliability.
Applications
Specifications (Better Half VW)
{{pistonspecs|
|ref=World Directory of Leisure Aviation 2011-12
|type= Twin cylinder, four-stroke aircraft engine
|bore={{convert|92|mm|in|1|abbr=on}}
|stroke={{convert|85|mm|in|1|abbr=on}}
|displacement={{convert|920|cc|cuin|1|abbr=on}}
|length=
|diameter=
|width=
|height=
|weight={{convert|40|kg|lb|1|abbr=on}}
|valvetrain=
|supercharger=
|turbocharger=
|fuelsystem=
|fueltype=gasoline
|oilsystem=
|coolingsystem=air
|power={{convert|30|hp|kW|0|abbr=on}}
|specpower=
|compression=8.5:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=
|designer=
|reduction_gear=
|general_other=
|components_other=
|performance_other=
}}
See also
References
{{Reflist}}
External links
- {{Official website|https://legaleagleairplane.com/engine/}}