To compete with the expanding range of lightplanes offered by other aircraft manufacturers, Piper produced in 1938 the Piper J-4 Cub Coupe. Retaining basically the same airframe as the J-3 Cub, this had a small increase in wing span and introduced improved landing gear with a fully-castoring tailwheel, hydraulic brakes and-speed fairings for the wheels. As powered initially by a 37kW Continental A50-1 it had the designation J-4, but introduction of the 48kW Continental A65-1 or -8 engine in 1940 brought redesignation as the J-4A, and later of the 56kW Continental A75-9 as the J-4E. In 1939 Piper introduced the J-4B, differing only in powerplant which initially, was a 45kW Franklin 4AC-171, but that was soon replaced by the 48kW Franklin 4AC-176-B2 without any change in designation. Last of the J-4s was the version powered by Avco Lycoming engines, the 41kW O-145-A1 or -A2, or 48kW O-145-B1, both of these Cub Coupes having the designation J-4F. Production of J-4s reached 1,250, and during World War II 17 J-4Es were impressed for service with the USAAF under the designation L-4E.
| MODEL||Piper J-4F|
| ENGINE||1 x Avco Lycoming O-145-B1 flat-four piston engine, 48kW|
| Take-off weight||590 kg||1301 lb|
| Empty weight||336 kg||741 lb|
| Wingspan||11.02 m||36 ft 2 in|
| Length||6.86 m||23 ft 6 in|
| Height||2.08 m||7 ft 10 in|
| Wing area||17.00 m2||182.99 sq ft|
| Max. speed||161 km/h||100 mph|
| Ceiling||3660 m||12000 ft|
| Range||547 km||340 miles|
|vernon balsom, 20.11.2014|
just bouth a j4 #CF-MMJ have not flown it yet but hear it is a good plane it has a A200 and will be put on full lotis 1450 waiting to fly it in the spring
I am looking for the main landing gear for the J4E. any suggestions???? please help!!!
|Glen Stone, 26.06.2014|
Just started completely rebuilding 39 j 4 got to rebuild both wings best place to get parts..?
|albert piccioni, 30.04.2013|
Dick Munro,re your lycoming 320 J4,I,m restoring one and could use your advice
|Ernie Morris, 13.04.2013|
My first airplne ride was in a J-4 Cub Coupe at the old Moorestown airport in Moorestown New Jersey in 1953 the Pilots name was Stanley Dan.Thousands of hours and many aircraft later I rember that flight as though it was yesterday.
|Dick Munro, 11.03.2013|
I have one under homebuilt category with a Lycoming 0320. large cuffed wing , super cub tail feathers, cessna 180 yokes and Edo 2000 floats. PERFORMANCE, and then some!!!!
I wonder if anyone has the plans for the J4 and I see q is a good plane for the actions and performances that have and I would like contruilo as amateur. If someone takes the system pdf I thank you. Sincerely Yours: Miguel Angel Zeleme. (email@example.com)
I purchased a 1940 J4 to use to teach my children and our youth pastor to fly. One has soloed so far. I'd like to find an "owners manual or a operating handbook". Can anyone help me?
I have a J4E Could someone set the tail on a bath scale and give the weight thanks
|budd Henderscheid, 28.05.2012|
I AGREE WITH ONE COMMENT. THE J4 IS PIPERS BEST KEPT SECRET
92 MILES CRUISE AN HOUR ON ABOUT 3 GALS HOUR. DOORS ON EACH SIDE. SLIDING SIDE WINDOWS. A DREAM TO FLY ON SKIIS
YOU CAN FLY THIS AIRPLANE BACKWORDS IF YOU CAN STAND IT AND ARNT IN A HURRY
|Chuck Jewell, 30.06.2011|
I learned to fly in 1969 and needed something of my own to fly. I saw an add in the paper of an antique airplane for sale. It was a 1941 J-4-E in a T hanger on a small field. It had a variable pitch prop that kept backing off and had to be held in by hand. I do not think it was standard on a J-4-E so when I purchased it I had it replaced with a fixed wooden prop. I haven`t see it stated, but the J-3 had a tandem seating and the J-4-E is a side by side. in 1941 Piper tried to attract car owners by adding chrome. The control sticks were chrome and on the cowling they had 3 strips of chrome on each side. The wings were large and did not require any flaps. In a 30 mph head wind you can hold the ground speed to 0 mph!! It is a sweet plane to fly and whenever I took an instructor up for my Bi annual check ride they spent more time flying it than I did. I completely restored it in 1971 (covered it with seconite, not sure of the spelling, It is a fiberglass cloth. I flew it for many years and finally sold it. By the way, I think Piper put a nose wheel on the J-4 and called it the Tri Pacer??
I flew one around wtby ,ct airport for an hour. It flew at 6o mpr glided at 60 mph aan stlled at 35 mph. A clumsy old dog
|Stanley Olson, 24.12.2010|
I used to have a 1941 J4 in the early fifties. Built up some time in it and sold it for about 500 bucks, about what I gave for it. Last I saw it went to Canadian Registry, it's US N# NC41199. Nice little plane. If you see it somewhere, tell it hello from from me, I still remember you.
|Malcolm D. Quick, 13.12.2010|
1946 had my first ride in J-4, started work at local airport in exchange for dual time in N-24709. !971 retrired as pilot USAF. Found a J-4 to restore. It turned out to be my first ride and lesson acft. Restored it to 95% show and flew for several years until forced to sell for $1200.00. Have lost track of it. Anyone with info on it, I would love to hear where she is now.
A real joy to fly.
Currently in process of building a J4. I have most parts. Looking for anyone with a fusalage frame in any condition. please contact me at firstname.lastname@example.org if you know of any or other pieces/parts.
|GEORGE SOLOMON, 14.10.2010|
PAT In 1946 we bought 27899 in boise for the sume of 600.WE sold it in 1949 to guy named ART FLETCHER who washed the gear out.The last I heard of it in was in nampa.Would love to have picture of it
344 sw 177th st SEATTLE WA 98166 thanks George
|Peter Clifford, 23.09.2010|
Anybody interested in a copy of a Piper Coupe J4 Service Manual covering care and operation of the j4? I also have a parts manual. They both have detail drawing and technical data. I got these in the mid 1980's and I moving. These will be very useful to a j4 owner. Please contact me vai e mail if interested.
|Al Wrisley, 21.09.2010|
I owned a J4 in around 1958 with another gentleman. We paid $1200 for it and I flew it out of the Oberlin, OH airport. It had a 75 Continental which, I believe, had been converted to an 85. 8-1 glide ratio as I recall. Of course, with a 20 mph. headwind cars were passing me on the Ohio Turnpike. Loved the plane, though.
|Ernie Morris, 20.08.2010|
My fisrt airplane ride was in a cub coupe in 1953 at the old Moorestown(NJ) airport.It was a night flight. The pilots name was Stanley Dan.I went on to a CSMEL.instrument,CFI but never had the chance to fly the J-4.
|Pat Thomas, 28.02.2010|
My brother and I finished a restoration of N27899 a year ago. What a sweet little airplane. We are into it about 26k, which is probably a little more than its worth.
Do you have any comments about this aircraft ?