Piper J-4
[1] The first J-4s had a Continental 50 hp A50 engine with upward-facing exhaust ports, an open cowl, oil and spring landing gear, a modified tail wheel system and many other changes.The 1940 J-4A gained a fully enclosed cowling, a Continental 65 hp A65 engine, and aft auxiliary fuel.[2] The final version was the 1941 J-4E which sported a 75 hp Continental engine and redesigned interior.Performance was now on par with similar contemporary types, but the attack on Pearl Harbor sealed its fate as all civilian aircraft manufacture came to a stop with the entry of the United States into World War II.[3] Some J-4s had another unique feature in the tail construction: the stabilizer was made of stainless steel tubing, riveted together with gussets.
ManufacturerPiper J-3Piper AircraftContinentalA50 engineA65 engineFranklin 4ACattack on Pearl HarborContinental A65-1Piper J-3 CubAeronca 50 ChiefCessna 120 and 140ErcoupeLuscombe 8Taylorcraft BList of aircraft of World War IIPA-32RPA-31TAerostarAltaireApacheArapahoArcherCaribbeanChallengerChargerCherokeeCherokee CruiserCherokee PathfinderCherokee SixCherokee WarriorCheyenneChieftainClipperComancheCub CruiserCub SpecialCub CycleCub ProspectorDakotaEnforcerFamily CruiserFlite LinerFlitfireGrasshopperMalibuMeridianMirageMojaveNavajoPapoosePathfinderPawneePawnee BravePilot 100/100iPiperJetPiperSportPoconoPost War Airplane 1Post War Airplane 6Post War Airplane 8SaratogaSeminoleSenecaSequoyaSkycoupeSky CycleSky SedanSuper CruiserSuper CubTomahawkTwin StinsonTri-PacerTurbo ArrowTurbo DakotaTwin ComancheVagabondVagabond DeluxeVagabond TrainerWestern CubWarriorUC-83ATaylorJ-3 CubPA-11 Cub SpecialJ-5 Cub CruiserPA-12 Super CruiserPA-14 Family CruiserPA-15 VagabondPA-16 ClipperPA-17 VagabondPA-20 PacerPA-22 Tri-PacerPA-18 Super CubPA-19 Super CubTaylorcraftModel 19BackcountryMackey SQ2SupercruiserCub CraftersCC11-100CC11-160CC18-180Carbon Cub EX/FXCarbon Cub SSSport Cub S2Top CubSAFAT 01Airbus Canada2/180 GyroplaneAvro CanadaCF-100 CanuckC-102 JetlinerCF-105 ArrowVZ-9 AvrocarBell Textron429 GlobalRanger505 Jet Ranger X525 RelentlessBoeing Aircraft of CanadaC-204 ThunderbirdA-213 TotemPB2B CatalinaBombardierCRJ100/200/440