<!-- This article is a part of Wikipedia:WikiProject Aircraft. Please see Wikipedia:WikiProject Aircraft/page content for recommended layout. --> {{Infobox aircraft | name=Acro Sport II | image=EAA Acro Sport II - AirExpo Muret 2007 0132 2007-05-12.jpg | caption= | type=Aerobatic homebuilt aircraft | national_origin=US | manufacturer=Acro Sport | designer=Paul Poberezny | first_flight= | introduction= | retired= | status= | primary_user= | number_built= | developed_from= Acro Sport I | variants= }} thumb|right|Acro Sport II thumb|right|Acro Sport II thumb|right|Acro Sport II The '''Acro II''' is a two-seat aerobatic sportsplane designed by US aviation enthusiast Paul Poberezny in the 1970s for amateur construction. It is an enlarged version of his previous Acro Sport I, sized up to carry two persons. Plans are available through Acro Sport in Wisconsin and material kits are supplied by Aircraft Spruce and Specialty.<ref name="WDLA11">Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 89. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X</ref><ref name="WDLA15">Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', page 91. Flying Pages Europe SARL, 2015. {{ISSN|1368-485X}}</ref><ref>{{cite web|url = http://www.aircraftspruce.com/catalog/kitspages/acrosport2.php|title = Acro Sport II |accessdate = 28 March 2017|author=Aircraft Spruce and Specialty|author-link=Aircraft Spruce and Specialty|work = aircraftspruce.com |year=2017}}</ref><ref>{{Cite web |last=Hintenlang |first=David |title=Resource guide for Acrosport Biplanes |url=http://plaza.ufl.edu/dhinten/Acrosport/acropage.htm |url-status=dead |archive-url=https://web.archive.org/web/20010712193330/http://plaza.ufl.edu/dhinten/Acrosport/acropage.htm |archive-date=2001-07-12 |website=The Acro Sport Resource Page |access-date=2023-07-31 }}</ref><ref>{{Cite web |last=Yarrish |first=Gerry |date=2020-02-20 |title=Planes Worth Modeling - Acro Sport II Biplane |url=https://www.modelairplanenews.com/planes-worth-modeling-acro-sport-ii-biplane/ |access-date=2023-07-31 |website=Model Airplane News |publisher=Air Age Media |language=en-US}}</ref>
==Design and development== The Acro Sport II is a short-span biplane of conventional taildragger configuration, typically built with open cockpits and spatted main undercarriage. Its structure is fabric-covered, steel tube fuselage and tail group, with wood wing structure.<ref name="WDLA11"/><ref name="WDLA15"/>
==Operational history== In March 2017, 83 examples were on the Federal Aviation Administration aircraft registry in the United States, although 129 had at one time been registered. In Canada in March 2017 there were 11 registered with Transport Canada.<ref name="FAAReg">{{cite web|url = http://registry.faa.gov/aircraftinquiry/AcftRef_Results.aspx?Mfrtxt=&Modeltxt=ACRO+SPORT+II&PageNo=1|title = Make / Model Inquiry Results|accessdate = 28 March 2017|author = Federal Aviation Administration|author-link = Federal Aviation Administration|date = 28 March 2017|archive-date = 29 March 2017|archive-url = https://web.archive.org/web/20170329232237/http://registry.faa.gov/aircraftinquiry/AcftRef_Results.aspx?Mfrtxt=&Modeltxt=ACRO+SPORT+II&PageNo=1|url-status = dead}}</ref><ref name="TCCAR">{{cite web|url = http://wwwapps.tc.gc.ca/Saf-Sec-Sur/2/CCARCS-RIACC/RchSimpRes.aspx?cn=%7c%7c&mn=%7cACROSPORTII%7c&sn=%7c%7c&on=%7c%7c&m=%7c%7c|title = Canadian Civil Aircraft Register|accessdate = 28 March 2017|author = Transport Canada|author-link = Transport Canada|date = 28 March 2017}}</ref>
==Variants== ;Acro Sport I :Single place version of the Acro Sport
==Specifications== {{Aircraft specs |ref=Terpstra<ref name="Terpstra">Terpstra, 1992, p.14.</ref> |prime units?=imp |crew=one |capacity=one passenger |length m=5.75 |length ft=18 |length in=10.25 |span m=6.60 |span ft=21 |span in=8 |height m=2.03 |height ft=6 |height in=7.75 |wing area sqm=14.12 |wing area sqft=152 |wing loading lb/sqft=10.0 |empty weight kg=397 |empty weight lb=875 |gross weight kg=690 |gross weight lb=1,520 |eng1 number=1 |eng1 name=Lycoming O-360 |eng1 type=4-cylinder, air-cooled, horizontally-opposed piston aircraft engine |eng1 kw=134 |eng1 hp=180 |eng2 number= |eng2 type= |eng2 kw=<!-- prop engines --> |eng2 hp=<!-- prop engines --> |max speed kmh=245 |max speed mph=152 |cruise speed kmh=198 |cruise speed mph=123 |stall speed kmh=85 |stall speed mph=53 |range km=692 |range miles=430 |endurance=<!-- if range unknown --> |ceiling m=6,096 |ceiling ft=20,000 |g limits=<!-- aerobatic aircraft --> |roll rate=<!-- aerobatic aircraft --> |glide ratio=<!-- sailplanes --> |climb rate ms=6 |climb rate ftmin=1,200 }}
==See also== {{aircontent <!-- include as many lines are appropriate. additional lines/entries with carriage return. --> |see also= |related=<!-- related developments --> |similar aircraft= *Pitts Special *Sorrell Hiperbipe *Steen Skybolt *Stolp Starduster Too *Aviat Eagle II (Christen Eagle) |lists=<!-- related lists --> }}
==References== {{Reflist}} * {{cite book |last= Terpstra |first= Philip |title=1992 Worldwide Homebuilt Aircraft Directory |year=1992 |publisher=Spirit Publications |location=Tucson, Arizona |page= 13}}
==External links== {{commons category-inline}}
{{Acro Sport aircraft}} {{Poberezny aircraft}}
Acro Sport II Category:Single-engined tractor aircraft Category:Biplanes Category:Homebuilt aircraft Category:1970s United States sport aircraft Category:Poberezny aircraft Category:Aerobatic aircraft Category:Aircraft with fixed conventional landing gear Category:Single-engined piston aircraft