How to Make Twin Motor ATR-72 600 RC Plane Part 1


Hello everyone, back with me again Julius. Thank you for visiting my channel This time we will make ATR-72 600 model RC plane Like shown here behind me The wingspan will be 1800 mm or 1.8 meter Like usual I will use 5 mm depron foam (polyfoam) my plan with this plane is using Citilink Garuda as livery scheme but if you have request for other livery let me know on the comment section [scratching head] Okay, let’s go to next step.. which is building process After plans were printed, cut them according the outlines and join lines I’ve been asked many times, where is the plans can be downloaded i always put a download link on video descriptions try open up again the description, you’ll find it there if still couldn’t find it, just go to : paper-replika.com on RC Projects category. You’ll find it there with pictures of build instructions after the plans have been cut join the separated plans according to each part number by using small celotape trace the plans on to depron foam by using ballpoint pen after plans are traced.. cut foam with sharp hobby knife actually you don’t have to break refill cutting knife everytime the knife is dull that’s pretty wasteful just buy a whetstone for knife sharpening or use sand paper and grind the tip if the knife there after grinding your knife, it will be sharp as new I don’t remember when i change my refill cutter for years Now we are going to make front landing gear platform This landing gear is fixed cannot be retracted like shown on the screen, I am assembling the LG platform first, measure plate placement from edge of the hole which is approx. 2.3 cm downward combine all parts with wood glue (PVA) and let it cured overnight but I’m an impatient person, so i insisted to use CA glue I use 3mm plywood as the material continue to make landing gear strut i use 2 different bicycle wheel spoke size the big one for landing strut and the small one for wheel shaft measure the small wire 6 cm and cut for the wheel shaft cut 2 pieces measure the bigger wire 7.5 cm and cut for landing gear strut use threaded side as one of the tip use a file to make rough surface on bottom end of landing gear strut which in the un threaded end do that too on the shafts bend smaller wire 90 degree to be use as wheel shaft the length of the shaft is depends on the width of your wheel combine the strut and 2 wheel shafts by wrapping around sewing yarn and CA glue use sewing yarn as stopper on the shaft root so the wheel will has no friction with the strut I use 45mm wheel to be as close as the scaled size the scale size is about 30mm but that’s too small for grass or dirt runway you can use up to 50 mm wheel so it will not ruined the scale look. also make stopper on the end of the shaft be careful when applying CA glue on this stopper tilt the shaft downward so the CA glue will not pour down the shaft hole on the wheel because if the glue can slip through the whole will make the wheel jammed cut 2.5 hardboard according to plans we will make support block for LG strut, so it can be rotate stack up 5 ply of hardboard and glue with CA glue coat all sides until harden make sure you are in ventilated room and using mask and safety glass make a base plate with 3mm plywood according to plans then put hardboard block and glue it on the center drill a hole in the center with the size of LG strut Use metal bolt washer so the hardboard will not worn out of friction make an indentation on the hardboard matched the size of the washer and glue the washer in it insert front LG set inside to the LG support platform the we build earlier glue it with hot glue, so if someday we need to detach it, it will be easier use servo arm and place it on top of LG strut by rotating it like a screw make sure the servo arm position is on the correct angle and direction to the wheel position before applying glue wrap servo arm and LG strut with sewing yarn and drop it with CA glue so the servo arm will stick to the LG strut prepare the servo for steering by making sure the servo arm on the servo is parallel to the servo arm on LG strut and then glue servo like seen on the video make pushrod with wire from wasted telephone cable of fiber optic cable or you can buy 1.5 mm steel wire as pushrod bend the tip of the wire in Z shape (Z bend) i use terminal krustin for joining 2 pushrods from servo and LG strut heat foam for fuselage on both sides if you feel the foam kind of soft you can rub it on to metal rod while bending it slowly when foam cold again heat it again and rub it again on metal rod repeat the process over and over again. step by step until the foam formed an cylinder shape need about 15 minutes nonstop to form a rigid foam sheet into round and cylinder shape patient is very important, if you rush it the foam will break roll the foam into smaller size roll like shown on the video and heat it on every surfaces and let it cool. this process is to make the foam stayed on rolled shape and will not open again after the curvature in achieved glue each sides to formed a cylinder glue it bit by bit approx. 5 cm each after glued, you have to hold it still until minimum 60 seconds or 1 minute. in that 1 minute you have to hold it still with two hands, do not move or release it. after the glue is cool down then you can continue gluing the next 5 cm and repeat all the process until it finish glue 1.5 cm foam stripe and glue it on both joints to make stronger bond I make the former too small there is 2 mm gap on all sides on shared plans. i already made a revision on this. So you will not find like this glue foam on plywood former make a hole so the servo can be inserted too you can see here I cut the foam bigger than the former, because I made the former smaller. but you don’t have to do it, just cut it match the former size. I already made a revision on the plans sand the former if needed so it will fit perfectly inside the fuselage extend servo cable before glueing former extend the cable until it 10 cm longer than the length of fuselage tube attach front LG platform on the edge of fuselage tube apply hot glue on the inside of the tube and then insert LG platform and adjust its position also apply glue from the inside to make it more secure attach foam former on the rear make hole of foam former with solder I use solder that i specialized for that purpose I never mixed up solder for solderin and for foam bend and roll or parts that make up the nose section with heatgun and metal rod make a center line of this part, because we will glue it start from the center attach that part start from the center for the next part, make hole so the LG strut can get through sand this part so it will fit with other parts glue all parts bit by bit don’t add glue all over it so you will have neat and not messy result stack 3 foam and press it with heavy object so you have good result glue it on the end of the nose and then cut it with hobby knife to shape the nose and then sand it with rough sand cloth AA10 smooth the nose section joints with sand it with water use 240 sandpaper for finishing remove and smooth the excess glue with hot knife heat the knife and apply it on excess glue, so the glue will be removed and you have smooth surfaces cut all plywood parts with plywood saw or other cutting tools bend steel wire to formed main LG strut according to plans cut the excess wire with metal saw also bend 4 pieces for wheel shafts file bottom end of LG strut and wheel shaft to make rough surface so the yarn have stronger bond on the wire combine LG strut and wheel shafts by wrapping them with sewing yarn and drop it with CA glue coat LG strut root with paper masking tape for easier glueing make holes around LG strut root with small drill use nylon thread to stitch LG strut to the plywood base plate you can also use small size cable zip ties but in my experience with nylon thread is stronger than cable zip ties even though need longer time I use white painted mica plastic to cover the center of the wheel wrap around sewing yarn on the shaft root as stopper also put stopper in the end of the shaft so the wheel wont come off add black paint on the bottom assembly main LG support frame glue plywood parts with wood glue or CA glue bend and form foam into cylinder shape as usual, glue it bit by bit cut the hole on the bottom center of the fuselage with sharp hobby knife [black screen] [black screen again] insert main LG platform frame in to the hole on the fuselage add glue from inside insert foam formers on top each frame side now we are going to combine the nose section with fuselage glue it bit by bit as usual don’t worry if you think the joint is not strong enough. We will reinforce it from the inside, on the next episode we are going to make the belly fairing sand this part as shown on the video sand the edges until it thin to fit with the fuselage cut hole on the belly fairing the wheel can get through add mark with pen where the belly fairing will be placed this lines are useful for us to apply glue apply glue to fuselage inside the marked lines and then attach the belly fairing part one by one start from the front left side when glue is cool then continue the other side don’t apply glue all over the part for neat and non messy result this is the first part the second part will be next week, oh no. next 2 week because next week we will make a simple model for beginner trainer. the second part will be covering tail section… and the wing the third part is electronics including motor, covering and maiden okay, see you on the next episode

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