{{short description|1930s American 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= R-5 |image = Kinner R-5 (Series-2), Kinner Airplane & Motor Corporation - Oregon Air and Space Museum - Eugene, Oregon - DSC09708.jpg |caption = Kinner R-5 (Series-2) engine, in the [[Oregon Air and Space Museum]] |engine_type= [[Radial engine]] |national_origin = |manufacturer= [[Kinner Airplane & Motor Corporation]] |first_run= |major_applications= |number_built = |developed_from = [[Kinner B-5]] |developed_into = [[Kinner C-5]] |variants_with_their_own_articles = }} [[File:KinnerR56.JPG|thumb|right|Kinner R-56 installed in a [[PT-22 Recruit]]]]
The '''Kinner R-5''' is an American five-cylinder [[radial engine]] for light general and sport aircraft of the 1930s.
==Design and development== The R-5 was a development of the earlier [[Kinner B-5]], with slightly greater power and dimensions. The main change was the increase in cylinder bore from 117 mm (4.625 in) to 127 mm (5 in) and an increase in piston stroke from 133.3 mm (5.25 in) to 139.7 mm (5.5 in). This led to a corresponding increase in displacement from 7.2 liters (441 cu in) to 8.8 liters (540 cu in). The R-5 was a rough running but reliable engine. Thousands of the R-5 and its derivatives were produced, powering many [[World War II]] trainer aircraft. Its military designation was '''R-540'''.
==Applications== [[File:Harrod Starts Fleet 4494.webm|thumb|right|Cam Harrod starts his 160 hp Kinner powered Finch Model R]] * [[Fleet Finch|Fleet Finch Model R]] * [[Howard DGA-18]] * [[Kinner Sportwing]] * [[Kinner Playboy]] * [[Meyers OTW]] * [[N2T Tutor]] * [[PT-22 Recruit|Ryan PT-22 Recruit]]
==Variants== ;R-5: ;R-53: ;R-55: ;R-56:
==Specifications (Kinner R-5)== {{pistonspecs |<!-- If you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject 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> --> |ref=Jane's all the World's Aircraft 1938<ref name=JAWA1938>{{cite book |title=Jane's all the World's Aircraft 1938 |editor1-last=Grey |editor1-first=C.G. |year=1938 |publisher=Sampson Low, Marston & company, ltd |location=London |editor2-last=Bridgman|editor2-first=Leonard|page=88d}}</ref> |type=5-cylinder air cooled radial |bore={{convert|5|in|abbr=on}} |stroke={{convert|5.5|in|abbr=on}} |displacement={{convert|540|cuin|L|abbr=on}} |length= {{convert|32.3|in|abbr=on}} |diameter= |width= |height={{convert|45.6|in|abbr=on}} |weight= {{convert|330|lb|abbr=on}} |valvetrain=1 inlet and 1 exhaust valve per cylinder |supercharger= |turbocharger= |fuelsystem=1 Stromberg carburetor |fueltype=73 octane |oilsystem=[[Dry sump]] |coolingsystem=Air |power={{Convert abbreviated|160|hp}} at 1,850 rpm maximum, {{Convert abbreviated|113|hp}} hp at 1,800 rpm cruise |specpower= |compression=5.5:1 |fuelcon= |specfuelcon= |oilcon= |power/weight=0.48 hp/lb }}
==See also== {{aircontent <!-- other related articles that have not already linked: --> |see also=
<!-- designs which were developed into or from this aircraft: --> |related= *[[Kinner B-5]] <!-- 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]] <!-- For aircraft engine articles. Engines that are of similar to this design: --> |similar engines= *[[Armstrong Siddeley Mongoose]] *[[Shvetsov M-11]] *[[Warner Scarab|Warner Super Scarab]] *[[Wright R-540]] <!-- See [[WP:Air/PC]] for more explanation of these fields. --> }}
==References== {{reflist}}
==Further reading== * {{cite book |last= Gunston |first= Bill |title=World Encyclopedia of Aero Engines |year=1986 |publisher=Patrick Stephens |location= Wellingborough |pages=99–100}}
==External links== {{Commons category}} * http://www.oldengine.org/members/diesel/Duxford/usaero4.htm {{Webarchive|url=https://web.archive.org/web/20190603212224/http://www.oldengine.org/members/diesel/Duxford/usaero4.htm |date=2019-06-03 }}
{{Kinner aeroengines}} {{US military piston aeroengines}}
[[Category:Kinner aircraft engines]] [[Category:1930s aircraft piston engines]] [[Category:Aircraft air-cooled radial piston engines]] [[Category:Five-cylinder engines]]