Choose your wattage,
@zathros
Legging it ..........!
I have luckily been on a break from work for two weeks, but, I need to print a couple of more copies of some engine parts. Because I want to print them on the same printer, I can only do that next week, when I'm back at work.
So, before I started building the second engine, I decided to try out a little experiment.
My basic idea for the two dioramas is that one will depict the HK flying, the other with the HK landed on the ground.
I searched the internet, but could not find any reference pictures, model builds, or anything, that shows the HK landed. (Unless I missed something .......)
Anyway, the model includes, what Laul describes as 'arms and legs', the four landing gear assemblies. These assemblies are fixed with the landing gear in the folded up position, as when the HK is flying. That is fine for one diorama, but not the other.
So, if I want the HK landed, the only way would be to make the fixed landing gear fully functional ......

And this is what I did........
I studied the parts and textures to work out how everything would/should function in the landing gear.
When the landing gear is in the folded up position, the bottom of the foot points upwards. When required for landing, the lower leg of the gear swings down and backwards, thereby bringing the bottom of the foot the correct way up, for landing. The 'ankle' also has rotational ability which would allow the foot to be placed on uneven ground.
The landing gear leg is actually a swing arm of sorts. As no hydraulic rams are present, I am assuming that the hinge itself is electrically driven. The main rotational hinge required to move the lower leg, is only depicted as texture. Also the whole gear assembly, where it attaches to the fuselage, also has the ability to rotate, to bring the landing gear into correct orientation for landing. The option for this rotational ability is included in the kit.
Hopefully this pic will make things a bit clearer.
Because these four legs will be taking the whole weight of the model, which will be rather heavy with all the extra panelling, wiring, LEDs and what not, they needed to be strong and the joints tight and able to take the stresses.
So, I started with the easy bit, the leg tube.

Before closing up the ends, I pushed a rolled tube of 250gsm card up the leg tube to give it strength.
The hole in the upper leg part was punched and a card ring flange replaced the textured one. The mounting tube for the leg was then glued in.
I put this part aside for now, as I first wanted to work out the hinge mechanism that this part attaches to. In the instructions this part is simply glued to the landing gear main arm. (see diagram above, circled.)
I studied the part sheet and using a bit of logic, I worked out that the lower leg attaches to the central section of the hinge, as shown by the red rectangle in the pic below. The two strips to the left and right of the red rectangle are the hinge parts for the main arm. The red circle shows the actual outer diameter (19mm) of the hinge part of the main arm, which has a smaller diameter than the hinge part of the lower leg (20mm). There is a reason for this, note also the notch as indicated by the arrow. I will explain this in the next pic
With reference to the picture below, the arrowed part of the piece is actually a limit stop, which would stop the landing gear from folding back on itself if swung to far.
When the leg is in the folded position, this part fits snuggly into the notch, arrowed in the picture above.
As it now stands, (
@Cybergrinder no pun intended,

) the leg would not be able to swing at all, as the limit stop would jam against the notch.
So, onto the main arm construction.
I laminated the sides of the main arm part to 1mm thick cardboard, to give it strength. I then cut out the part.
I cut a few 20mm and 19mm diameter discs from the same thick card, to be used as packing pieces.
I used one 20mm disc and lined it up with the texture of the circular end of the main arm and used the hole in the disc, created by the compass cutter, to mark the centre point of the hinge on both sides of the main arm. I then cut away a 1mm strip from the diameter of the hinge end of the main arm. I did the same for 4 of the packing discs. I only cut away half of the circumference of these discs, to create a notch, which will become the limit stop itself. The red arrow in the pic below shows this notch on the main arm.
As I am going to use a 3mm piece of dowel as the hinge pivot, I punched out holes in the arm and discs to accommodate this.
I then glued the discs into place, ensuring that the notch was in the correct position. I used a piece of dowel to keep everything centred. These discs bring the piece up to the correct thickness as depicted by the texture.
Once I was satisfied that everything was as it should be, I added an extra piece of thick card to the inside bottom of the arm and placed a bracing piece to keep the arm square and glued the arm into shape.
I then cut some strengthening plates for the inside of the upper leg part and added extra pieces to bring the width of the limit stop piece, to the same thickness as the hinge plates of the main arm.
That's all for now folks. I am off to a dart tournament now, (and another one tomorrow,) so if all goes well I will post the continuation of this saga later this evening.
Laters!!
