Statistics for the 1946 Piper J-3 Cub were as follows: I have a smart level, but I'm not sure what to referance off on the fuselage. I believe mine is a little over 5 inches. Wartime demands soon increased that production rate to one Cub being built every 20 minutes. [3][4] When he saw the redesign, Taylor was so incensed that he fired Jamouneau. $95.00/hr . 0000002018 00000 n Since the AOI of the wing references from the Datum (??) We can't know for sure, but whatever it was must have gotten corrected when the Atlee birdcage was installed. I know I could use some improvement myself. Aircraft of comparable role, configuration, and era, "Piper Cub" redirects here. I noticed during building that the incidence on the plans was 0 wing and 0 stab. endobj I think Wingie's just making sure that some neophyte doesn't misconstrue our "thinking aloud" and hurt himself. After the war, many L-4s were sold as surplus, but a considerable number were retained in service.
Today I measured the incidences of the wing and stabilizer. x��\K����W��%N� $'ٲ�Vr�]�*��a�]�ڇ�ZGίOc@7�I%rE:h8x5���˾r������f��W���a1�^�z>^->,l����}>�Y~{�R�]?,O. Hobbyking Piper Cub vs Dynam Piper Cub For First Plane? Are there any opinions as to how it relates to performance? I am building a Wag Aero 2+2 . I would also ask what the throw is on the aileron during the down position ... in regards to the up position of the opposite aileron. Just more to ponder.
Since the wing will have minimal flexing once recovered, which will reduce the amount of "adjustable" washout, I want to set the wing to a specific washout angle before adding the extra leading edge sheeting and covering. Is it worth messing with? I debated changing this but thought what the heck, follow the plans. Piper sold 19,073 J-3s between 1938 and 1947, the majority of them L-4s and other military variants. I had a thought regarding the angle of incidence of a cub. The most desiderable object for whoever loves true scale reproduc-tions, the highest level you want to reach to. Thanks for any advice.
All L-4 models, as well as similar, tandem-cockpit accommodation aircraft from Aeronca and Taylorcraft, were collectively nicknamed "Grasshoppers", though the L-4 was almost universally referred to by its civilian designation of Cub. Some of the things Piper did change were not for the better. Powered by a 40 hp (30 kW) engine, in 1938, it sold for just over $1,000. Run the trim all the way up and all the way down checking both ways with a Smart level. The dihedral on one is 0 and the other (not built by me) is just a few degrees, I'm guessing 3 or so degrees. Cubs are highly prized as bush aircraft. 0000001770 00000 n By war's end, 80% of all United States military pilots had received their initial flight training in Piper Cubs. The Piper J3 Cub is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1937. 0000001187 00000 n So watch out. Should this thing have positive stab incidence? sometimes less throw on the down travel compared to the more throw in the geometry of the up-travel of the coresponding aileron can give a smoother flight experience. According to my calculations 3" gear only changes the three point angle of incidence by .6 degrees. trailer <<92E6E88797DE424B8B8DF302BD25450C>]>> startxref 0 %%EOF 64 0 obj <>stream I know of a -12 with an extended Maule wing and slats that has the rear attach fitting on the fuselage lowered. About 75% of all new pilots in the CPTP (from a total of 435,165 graduates) were trained in Cubs. I was under the impression that the Datum line is rather arbitrarily chosen during the design phase as a base line to work around? (The coincidence led some to believe that the "J" stood for Jamouneau, while aviation historian Peter Bowers concluded that the letter simply followed the E, F, G and H models, with the "I" omitted because it could be mistaken for the numeral one.). You need a really good goal in mind about exactly what you would be trying to accomplish by changing the AofI and a darn good understanding of exactly what effect your change will make to go any way except by the numbers. ][16][17], Piper developed a military variant ("All we had to do," Bill Jr. is quoted as saying, "was paint the Cub olive drab to produce a military airplane"),[5] 5 0 obj (literally). Built an Ikon West 1/4 scale Super Cub last winter. Is it up the middle of the airframe? On April 29, 1941, all 48 Flitfire aircraft, one for each of the 48 states that made up the country at that time, flew into La Guardia Field for a dedication and fundraising event which included Royal Navy officers from the battleship HMS Malaya, in New York for repairs, as honored guests. I noticed during building that the incidence on the plans was 0 wing and 0 stab. It had accommodations for a single passenger in addition to the pilot. Seems that I remember a Sig 1/4 scale that I built about 15 years ago had positive incidence in the stab. It had big tires and the flaps and ailerons rigged downwards a scarcely noticable amount; it was the SLOWEST dang 172 I had ever seen. From the PA-11 on through the present Super Cub models, the cowling surrounds the cylinder heads.
The plans specify 2.5 degrees positive. The aircraft has a simple, lightweight design which gives it good low-speed handling properties and short-field performance. First Lady Eleanor Roosevelt took a flight in a J-3 Cub, posing for a series of publicity photos to help promote the CPTP. stream Statistics for the 1946 Piper J-3 Cub were as follows: The angle of incidence on the J-5 and the PA-12 are the same (Same Basic Fuselage) and is different from the J-3 and PA-18. That is exactly why the "good" rebuilders jig their fuselages whether they are actually replacing tubes or not. Firewall is 0 right and down thrust. Are there any opinions as to how it relates to performance? What was the outcome? I wouldn't worry too much. If you change the wing angle of incident to match the PA-18 then you also need to adjust the horizonal stabilizer up and down travel to match the PA-18 as well. 0000000856 00000 n I have a smart level, but I'm not sure what to referance off on the fuselage. Campbell, Douglas E., "Volume III: U.S. Navy, U.S. Marine Corps and U.S. Coast Guard Aircraft Lost During World War II Listed by Aircraft Type", Lulu.com. Later in 1930, the company went bankrupt, with Piper buying the assets, but keeping founder C. Gilbert Taylor on as president. Another thing to consider is are you doing big keller flaps and what effect do they have on the cord line of the wing when deployed and how does this effect the stabilizer decalage? Any Ikon West Cub fliers out there have input? You might just spoil an otherwise really good airplane. Use the wing template to cross-check the aileron and flap alignment. It … 0000006047 00000 n When you measure the incidence, is that at the top of the fuselage,where the wing sits ? 2. Do you really believe that Piper built the cub perfectly? [15][self-published source? For these operations, the pilot generally carried both an observer/radio operator and a 25-pound communications radio, a load that often exceeded the plane's specified weight capacity.
0000001469 00000 n Crash, Stab.
The main gear on the Cub Special Trainer consists of individually sprung wheels on which are mounted low-pressure tires. [24] During the Korean War, the L-4 was in service in many of the same roles it had performed during World War II, such as artillery spotting, forward air control and reconnaissance. Each has an incidence of 6 degrees positive. Heard that once, thought it was good. I'm not even sure how to check what the angle is! The Piper J-3 Cub became the primary trainer aircraft of the CPTP and played an integral role in its success, achieving legendary status. I debated changing this … The aircraft's standard chrome yellow paint came to be known as "Cub Yellow" or "Lock Haven Yellow". For for the earlier Taylor design, see, Certified/factory-built aircraft manufactured in Canada, Piper J-3 Cub Film Series (TM Technologies, footage from 1937–1948 shows step-by-step construction. Very correct. The Piper Cub quickly became a familiar sight. I have read some bits and pieces here on the angle of incidence. 205 [18] After the Allied breakout in France, L-4s were also sometimes equipped with improvised racks, usually in pairs or quartets, of infantry bazookas for ground attack (actually a form of top attack) against German armored units.
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