# Walter Atom

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> Markdown URL: https://mediated.wiki/source/Walter_Atom.md
> Source: https://en.wikipedia.org/wiki/Walter_Atom
> Source revision: 1321551557
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{short description|1930s Czech piston aircraft engine}}
<!-- This article is a part of Wikipedia:WikiProject Aircraft. Please see Wikipedia:WikiProject Aircraft/page content for recommended layout. -->
{{infobox aero engine
 |name= Atom 
 |image = Walter Atom (1934).jpg
 |caption = 
 |engine_type= [Piston](/source/Reciprocating_engine) [aircraft engine](/source/aircraft_engine)
 |national_origin = [Czechoslovakia](/source/Czechoslovakia) 
 |manufacturer= [Walter Aircraft Engines](/source/Walter_Aircraft_Engines) 
 |first_run=1934
 |major_applications=  
 |number_built = 
 |developed_from = 
 |developed_into = 
 |variants_with_their_own_articles = 
}}

The  '''Walter Atom''' is a Czechoslovak air-cooled horizontal two-cylinder engine used on light aircraft.  It was first produced in 1934.

==Specifications (Atom)==
{{pistonspecs
|<!-- If you do not understand how to use this template, please ask at [Wikipedia talk:WikiProject Aircraft](/source/Wikipedia_talk%3AWikiProject_Aircraft) -->
<!-- Please include units where appropriate (main comes first, alt in parentheses). If data are missing, leave the parameter blank (do not delete it). For additional lines, end your alt units with </li> and start a new, fully formatted line with <li> -->
|type=Horizontally-opposed 2 cylinder air-cooled
|bore=85&nbsp;mm (3.35 in)
|stroke=96&nbsp;mm (3.78 in) 
|displacement=1.09&nbsp;L (66.5 cu in)
|length=510&nbsp;mm (20.08 in)
|diameter=

|width=815&nbsp;mm (32.09 in)
|height=409&nbsp;mm (16.10 in)
|weight=40&nbsp;kg (88.2 lb)
|valvetrain=1 inlet and one exhaust valve per cylinder
|supercharger=
|turbocharger=
|fuelsystem= 2 [Amal](/source/Amal_(motorcycle)) carburettors
|fueltype=68 octane
|oilsystem=
|coolingsystem=air
|power=21&nbsp;kW&nbsp;(28&nbsp;hp) at 3000 RPM 
|specpower=
|compression=5.2:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=2.14&nbsp;kg/kW (3.52&nbsp;lb/hp) at cruise
}}

==See also==
{{aircontent
<!-- other related articles that have not already linked: -->
|see also=

<!-- designs which were developed into or from this aircraft: -->
|related=

<!-- aircraft that are of similar role, era, and capability this design: -->
|similar aircraft=

<!-- relevant lists that this aircraft appears in: -->
|lists=
*[List of aircraft engines](/source/List_of_aircraft_engines)
<!-- For aircraft engine articles.  Engines that are of similar to this design: -->
|similar engines=
*[ABC Scorpion](/source/ABC_Scorpion)
*[Aeronca E-113](/source/Aeronca_E-113)
*[Armstrong Siddeley Ounce](/source/Armstrong_Siddeley_Ounce)
*[Bristol Cherub](/source/Bristol_Cherub)

<!-- See [WP:Air/PC](/source/WP%3AAir%2FPC) for more explanation of these fields. -->
}}

==References==
{{Commons category}}
http://www.oldengine.org/members/diesel/Duxford/czechaer1.htm {{Webarchive|url=https://web.archive.org/web/20070804020858/http://www.oldengine.org/members/diesel/Duxford/czechaer1.htm |date=2007-08-04 }}

{{Walter aeroengines}}

Category:Boxer engines
Category:1930s aircraft piston engines
Atom
Category:Air-cooled aircraft piston engines

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Adapted from the Wikipedia article [Walter Atom](https://en.wikipedia.org/wiki/Walter_Atom) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Walter_Atom?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.