This is the first time I make a glider like model aircraft. I build and make the plans for this MQ-9 Reaper because there are many request for this UAV drone and it looks cool with all bombs and missiles it can carries. Learning from many previous model on Youtube videos, I decided to make the size of it with 2500mm wingspan, to give lighter wing loading. I enlarge the wing area almost doubled also made the stabilizers a bit bigger then the scale for maintaining stabilization. Surprisingly it take off without any issue and fly very stable and floating.

This video is a continuation from previous video which is about how to design RC plane plans. When designing RC plane plans, we need to build and test it to fly so we can improve the plans. I made this model using Blender 3D program, Pepakura Designer and together with Inkscape. You can find part 1 of how to use it on my channel. This Zenith CH750 model is modelled exactly the same with the real one but it's smaller, the wingspan is 120cm or 47.2 inches. I usually modified, or enlarge the size of the wing and stabilizer when converting it to RC model, but this time I make it exactly scale for education purpose. The model finally can fly after some trial, but with some adjustment from the real one.

About 2 months ago I made a poll about what the next radio control plane model on my Youtube Channel Community tab. The winner is the P-47 Thunderbolt 'Razorback' version. I made the model in Blender 3D, you can see the process of 3D modelling in this video. The reason I made 1200mm wingspan is to match my P-51 Mustang scale, both have 1/10 scale. It equipped with servoless retractable landing gear. I have a problem locking the landing gear strut, I just use CA glue so it don't have enough strength. I also made the plans for fixed landing gear. At first I use the wrong CG which is 7,7 cm, the correct CG after some trial is exactly 7 cm from leading edge of the wing root. The can fly straight with the correct CG but needs more power, I recommend to use 4S for maximum performance, but you can still fly with 3S for scale flying. I haven't fly any RC model on the last months so I was a bit clumsy in landing and take off.

I'm trying something new again this time, trying to build an RC car that I never do it before. I know the hardest RC model to make is model car, but it turned out to be a lot harder than I expected. There were many troubles on the process like, I had to change the gear ratio combination because the first one was too heavy for the motor. The second gear combination was okay but still not efficient. The first motor (1200kv) was burned out, I had to replace it with 650kv. The second gear combination broke their teeth and then I replace the material from PVC foamboard to 2mm plywood, each gear comprise of 4 sheets bonded together. The mechanism was to noisy until I applied lubrication to the gears. And then the steering servo broke I had to replace it with a new one. It's so frustrated I kicked the car few times in madness lol, but luckily it still has it shape. Beautiful shape actually, the back side I think I nailed it, but the front side not so much, because the front tip is supposed to be lower but the front wheel are on the way. After many troubles, finally on the last day it can run and I can RC-drive it as you can see on the video and it turned out quite a good sight. I learned so much on this project that I can use that experience for other future projects like, making gears, use 2 switches to reverse brushless rotation.