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BEHIND THE BUILD: MOC Modern Jet

 Modern Jet


Built entirely from the LEGO Technic set 42097, the Compact Crawler Crane.


My second Technic MOC

Build/design time: 7 Hours


        Watch the review on YouTube:

        Link on YouTube: https://youtu.be/REumEdsGObE



Dimensions

        Length: 52 cm, or 21.5 in

        Width: 37 cm, or 14.25 in

        Height from ground to body (with landing gear down): 7 cm, or 2.75 in

        Height from ground to top of tail fins (with landing gear down): 16.5 cm, or 6.5 in


Design

       I like to start by deciding on the functions. Things that I knew were a must were: (1) movable flaps, (2) landing gear with rolling wheels, and (3) an air brake. Originally, I wanted the flaps to move together, with one moving up and the other down or both in unison (up together, down together). I made several versions using friction pins as clutches but couldn't find exactly what I was looking for; so, I settled on two separate axles for the flaps, making it possible to move each one independent of the other.


Behind the functions

        The gearbox consists of about twelve gears. Two red levers are accessible via the top of the plane and actually control which function to operate. The engines of the jet are used to control the selected function. When the levers are towards the rear of the jet, they engage with the gears that control the flaps on the wings. Rotating the right engine controls the right wing flap, and the same goes with the left side of the aircraft. 


        When the left lever is moved forward, it engages with the gears essential to control the actuator, which, in turn, raises or lowers the air brake. (Left in reference to pilot, so, as viewed from pictures, our right.)


        The forward position for the right lever actually controls the landing gear, causing all three wheels to fold into the body at the exact same time. (Again, right in reference to pilot, so left in picture)


        Here is a short video showing the shifting between functions:




        Youtube link: https://youtu.be/Bnoqi7YOnuw


Details

        There are several details I decided to put on this jet. They are listed below with pictures.


        - Control stick and seat.




        - "Lights" at end of wings.


        - Intake fans. On real jets, these fans suck air into the engines to be compressed.



        - Weapons, which can be easily removed.





        - Bottom of engines (gray cylindrical part). They are sturdy, too.




        - Able to remove the gearbox cover very easily to see what is happening.










More Pictures






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