PZL-104 Wilga RC Plane Build and Fly

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PZL-104 Wilga RC Plane Build and Fly

hello guys it’s me again Julius this is our newest project this is PZL-104 Wilga 35a or just Wilga there are many version of wilga including this one this is the old one and the modern one is wilgar 2000s and also draco this is a 1960s aircraft made in poland we also know this in indonesia as Gelatik, Gelatik is just literally indonesian name for wilga a name of bird as you see on the first scene opening scene this plane is fly very well well balanced and very controllable very stable but it end up crashed because it’s my stupidity i was i want to turn left to make a bigger circle but the nose is up a bit and it make it make the plane slower and more slower and then i should have turned left but i turn right and it stalled but with that accident i learned that this plane needs more bigger wing to make more lift and to make easier flying and also i made modification on this cowl this is longer version than the crash one to make motor and batteries more forward so it will not need a counterweight balance anymore so it will be more lighter and bigger wing so the final version will be will have a better performance performance than this ok let’s start building this plane you can download the plans on my website paper-replika.com there’s a direct link on the description you can choose to print on A4 or A0 size paper for decal it’s in A3 format trace the individual parts onto 5 millimeters foam sheet i am going to make a middle section of the main wing here i curve the upper part by heating it on a heat gun press and curve it on the metal pipe the lower part is less curvy than the upper part like this sanding leading and trailing edge of the lower part like this follow these steps to make the middle section of the wing mark the spar position just behind the spark to insert wing joiners make holes on both sides for inserting wing joiners

just like the middle section curve the foam for making two side wings and then combine the three sections of the wing add wing tips from styrofoam blocks by using a guide from plans cut the aileron by also using a guide from plans cut the edge of the aileron about two millimeters to give space from the wing for aileron free movement and then remove the bottom side of the aileron about five millimeters and sand it like this and use the cut aileron foam parts to fill and close the gap on the wing follow the steps to build the fuselage we need to sand the inner edge down so it will be on the same level as the

outer edge the nose is a bit crooked to the right and a bit tilted down leave it that way it’s on purpose to give the motor down and right thrust angle if you make it straight the plane will be keep flying to the left and will crash on takeoff make score lines for easier bending for this part sand the inner edge but only the halfway down leave the other half like this add pieces of foam to reinforce the join between front fuselage and tail boom make sure the tail is straight sand this vertical stab leading edge only bend three millimeters wire according to the plans like this for making landing gear

wrap the root with masking tape and glue to the plywood base tie the landing gear struts with small cable zip ties add another strut with smaller wire as a bracing strut also tie the bracing struts with cable zip ties use sewing thread and CA glue to tie landing gear struts with bracing struts install the main landing gear to the fuselage like this add foam layer on top of the landing gear base and then add 10 millimeters foam to the wall and to the foam layer to secure the landing gear position add another foam layer inside this part to make it straight and leveled i use epoxy glue to glue the wire to plywood after an hour install the tail landing gear add these parts to make horizontal stab mounting i am run out of packing tape so i use oil paper again for covering smooth all sharp edges on the fuselage main wing

and stabilizers with sandpaper before covering i use masking tape as control surface hinges draw center lines on horizontal stab as guide for attaching it to the tail make sure to peel off the cover on the surface which will be in contact with the mounting remove a portion of the wing on the middle trailing edge to finalize the wing fill the gap with foam and then patch the cover with masking tape add 10 millimeters foam on each fuselage walls to support the servo platform attach control horns on elevator and rudder

make a hole for rudder pushrod and add small plastic straw to guide the pushrod wire make a Z-bend on the end of the pushrod wire and install the servo i use krustin terminal as a stopper for rudder pushrod wire now installing elevator pushrod and servo i use three millimeters plywood for the wing mounting install two servos for aileron like this put the foam back to close the hole make a hole for esc wires in the end i made the hole position much lower than this insert the esc and pull the wires out like this use 30A ESC minimum for the setup this is how to install the motor but in the end i installed the motor much lower than this because the engine cowl didn’t fit with this position i used 4 gypsum screws to secure the wing add mica plastic to each holes to protect the foam finally add control horn and push rods for ailerons

i use 0.3 millimeters mica plastic for engine cowl and use foam for its front part attach foam to the mica plastic like this hanging in half carve the front part into rounded shape with cutter knife and then sand it smooth you can see here the motor needs to be moved lower so i did move it like this add 10 millimeters EVA foam around the motor so the engine cowl can have something to hang on to apply PVA glue on foam surface evenly to protect it from paint paint with acrylic spray paint two layers of paint are enough apply decal the decal file can be downloaded along with the plans i use just a single small screw to hold the engine cowl like this i add a piece of mica plastic to receive the screw use sewing thread with ca glue for wheel stopper

mark cg position with screws so it will be easy and quick to feel and find it cut the battery hatch door add 10 millimeter foam inside the nose to make a battery tray add two pieces of foam inside the battery hatch to prevent the door to fall inside also add two pieces of plastic on the door to lock the door on one side cover the edges of the door and the hatch with painted masking tape to preserve paper covering add a piece of mica plastic to the rear edge of the door for easier opening there is no lock system just using friction you can see there are many AA batteries on a nose as ballast you will not need it because this is a prototype there is no need for that on the final plans after removing 6 of 10 AA batteries for counterweight ballast and moving the cg point one centimeter to the back she finally airborne i was flying the plane too slow on this turn and the plane stalled

i don’t know if this plane cannot handle the wind very well

she’s easily affected by the wind or maybe because i turn so tightly bank too much and expose the wing to the wind this field is long but narrow so i need to turn the plane tightly it’s kite season many kids littered their kite thread everywhere on this field it caught up and winded up to the propeller three times this thread is so sharp like a sand paper it cut through the foam okay guys that’s the maiden flight i love this plane i like to touch and go this Wilga okay this project is finished the next project will be Bango 2 it’s a trainer a little bit different from Bango 1 not a little bit it’s different from Bango one because the motor will be on top of the fuselage like sky arrow but very simple for beginner and and there’s more thank you for voting on which twin engine plane that i will make this is dc3 nose that i have already made

it will has 220 centimeters wingspan yeah it’s big but uh i use three millimeters instead of five millimeters to save weight and to make it as light as possible i will not release this as parts anymore so i’ll make this in between episodes so every every episode in the end i will share the progress of this project dc3 okay guys thank you for watching and if you like this video consider to like subscribe and share okay see you on the next episode