Hello friends in this video I have made a small V4 solenoid engine, I made its body from 6mm thick cast acrylic sheet so it can be transparent and visible through also added 2 leds for illumination.. rest of the parts are made up of brass and aluminium.

Material Used

6mm acrylic sheet
Piece of wood for the base
Brass rods
1/4 inch aluminum sheet
Steel rods
26 AWG copper wire
2 no. 693 zz ball bearings
Copper safety pins
TIP122 transistors
7805 voltage regulator
100-ohm resistors
Something to use as a flywheel
Mini CNC milling machine
Mini lathe
Various bolts and nuts
Screwdriver set
Electrical wires and soldering gear
Soldering Kit

With all the materials needed in hand, it is time to get on with the build.

The first step is to cut out the shapes you need from the acrylic sheet. You can use a power tool, like a jigsaw, or cut by hand -- completely up to you.

No dimensions are provided, so watch the video for more details.



Next, place the cut acrylic pieces onto your CNC milling machine, and cut out the main V4 pieces. Alternatively,

you could 3D print these pieces if you are not worried about them being transparent.

Again, no dimensions are provided by the creator, so this will take some trial and error.


Drill holes and assemble the main solenoid V4 frame as shown in the video.


Next, mark out and cut out a suitably sized piece of wood to form the base of the solenoid V4.

Again, sadly, no dimensions are provided, so ensure it is big enough to mount the entire final V4 model onto.

Once cut to size, CNC mill the wood to form a shallow recess on one face of it, as shown below.


Sand it down, as required.

Next, mark out and drill sufficient numbers and size holes to mount the acrylic frame to the base.


Now, it is time to make the crankshaft discs for the V4 engine. Grab a brass rod, and cut off a small length -- as shown in the video.

Then place the rod piece into a mini lathe and machine the discs, also as shown in the video. The discs made in this guide are 20mm in diameter by 5mm thick.

You'll need 5 of them in total.


Buff and polish, as required.

Next, cut out a piece of the aluminum sheet, place it on your CNC milling machine, and create the piston rods required. You'll need four of these -- once for each cylinder.


Buff and polish these pieces too.

Next to make the crank disc and rod connecting rods. Grab your steel rods and cut them into sections, and machine as required.

You will also need to make the solenoid "pistonhead" pieces too.

Again, no dimensions are provided so please watch the video for more details on this section.

With that complete, the next phase is to make the solenoid "cylinders". Take some more brass rod, and cut off 4 equally sized sections.

Machine these brass rod pieces into cylindrical I-shaped pieces "bobbin", as shown in the video and the image below.


These pieces will also need a suitably sized hole through the center to enable a snug fit for the piston rods you made earlier.

With those complete, now coil copper wire around each one. You can now connect each one up to a battery, place the steel rod piston heads inside them, and test whether the heads move inside the cylinders, or not.


Next, grab the brass discs, rods, and piston heads, and assemble the crank shaft as shown in the video and image below.


Now, partially dismantle the acrylic V4 frame, you made earlier and insert the two ball bearings into each endplate, as shown.


With those in place, insert the completed crankshaft to the V4 frame as shown below.


Next, attached the piston heads to the piston rods. Now, attach the solenoid cylinders to the acrylic top plates, as shown below, and in the video.


With that stage complete, insert the piston heads inside each solenoid, and screw the top plates into place as shown below.


Next, feed the copper wires through the wooden base. The...

Read more »