Joisey Hoister (oz8730)
About this Plan
Joisey Hoister. Free flight PAAload model by Ted Grzesczak.
Quote: "Hoist: lifting apparatus for heavy loads. Joisey Hoister: good basic design for helping you to haul away some of that Pan-American PAA-Load hardware. By Ted Grzesczak.
Tired of losing your models? Guess that's a sad ques-tion to ask any active model builder, but the PAA Load Cargo event eliminates all fear of that. With this in mind, you should be raring to go, knowing that at the end of a day's flying you will still have your ship and maybe some hardware to boot.
Since the 'Cargo' event is comparatively new, one must stop to think what is needed to have a 5-ounce model lift approximately three times its own weight and still land in one piece. Being limited to .049 engine, we'll have to squeeze everything out of it plus whatever else will aid in making this weight lifter fly for 40 seconds on a 20-second run.
Since the model must ROG and land intact, the landing gear size, type, and location are of vital importance.
Our original Joisey Hoister had a single strut landing gear. We soon found it was necessary to install a gear as shown on the plans. This was to allow the ship to take off and land in one piece. The gear must be strong enough to keep the wheels in perfect alignment. This is not required on lightly loaded models, but on heavily loaded models it is a must. The original had a short tail skid and after a few ROG attempts it was found necessary to lengthen the tail skid to decrease the fuselage angle. This permitted the model to assume its proper flight attitude without using all the runway to get into flight. It was discovered that large diameter wheels proved an asset where ground conditions were poor.
Thin wheels with axle support are best. On one occasion when the model hit a parked car, the cargo came through the bottom of the fuselage. The plans show the latest innovation Frank Ehling is using. This allows the cargo to emerge from the fuselage without damage.
To start the construction of this fuselage, cut the sides from 1/16 'C' stock. Cut the required bulkheads from designated size sheets. Note that the #1 bulkheads are hard 1/8 sheet balsa. To assemble the fuselage, it is best to invert the sides placing them over the top view drawing. Place the #1 bulkheads in position. Cement the rear of fuselage together. Starting with #2 and working to the rear, cement in the remaining bulkheads. The 'V' cargo bulkheads, which are cut from hard balsa, are cemented in place as shown. While the bulk-heads are drying, bend the landing gear into shape as shown on the plan. Bind with solder. Bind and cement the gear to the 1/4 in square strip and cement the entire unit in place.
The nose block is cut to size along with the two fire-walls which are cemented together and then cemented to the front bulkhead. The fuselage top sheet is now cemented in position. The bottom can now also be cemented in place. This bottom sheeting starts at the rearmost #1 bulkhead. The sheets are now trimmed to size. Sand entire fuselage smooth. Bend and cement in place tail skid and stabilizer tie-down hook. Shape the nose block from the fuselage square to the round firewall.
The cargo platform Is now built up of 1/16 sheet and 1/8 squares to fit. The entire fuselage is given a coat of clear dope and when dry, sanded. Be sure to use ample cement and gauze to secure the firewall to the nose block. Give the entire fuselage a coat of fuel proofer.
Make the wing in three sections. This is done when the builder has a restricted building area. Cut out the ribs of 1/16 sheet as shown on the plan. Lay out the leading edge and trailing edge over the plan along with the rear spar. Cement the ribs in place. When dry, cement in the top spar. Sheet the top with 1/32 balsa. Add the caps to the ribs. Mock up the three panels and cut angle for dihedral. Cut the wing gussets and cement panels together. Be sure to cement all joints well. Add the wing tips and carve to shape as per plan. Sand the entire wing and re-cement all loose joints... "
Direct submission to Outerzone.
Update 23/03/2019: Added article, thanks to RFJ.
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