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09/03/2026

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27/11/2025

At the outbreak of World War II BSA were Britain's largest motorcycle manufacturer with a long history of armaments supply to the armed forces. Designed by Val Page the BSA M20 started development in 1937 as a heavy-framed sidecar model with a simple 500 cc single cylinder side valve engine. It had low compression and plenty of low-end torque through a standard BSA gearbox.
Early K-M20 models from 1939 were made from standard civilian parts with the addition of military fittings, such as a large 8-inch Lucas DUl42 headlight (fitted with a black out mask), a timing-gear cover with a screw-in plug for access to the magneto drive-pinion nut and special filler caps for the petrol (gas) and oil tanks. These early military M20 models were also fitted with a long spiked prop stand on the rear nearside pivoted from a lug brazed on to the rear frame tube. Factory ledgers show that BSA exported K-M20 models to Sweden, South Africa and India, as well as civilian dealers and distributors
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18/10/2025

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01/10/2025

Shout out to my newest followers! Excited to have you onboard!

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30/09/2025

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30/09/2025

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28/09/2025

Technical Specifications - Sukhoi Su-57
• Role: Multirole Stealth Fighter
• Crew: 1
• Length: 19.8 m (65 ft)
• Wingspan: 14.1 m (46 ft 3 in)
• Height: 4.6 m (15 ft 1 in)
• Empty weight: 18,000 kg (39,683 lb)
• Max takeoff weight: 35,000 kg (77,162 lb)
• Powerplant: 2 × Saturn AL-41F1 (izdeliye 117) afterburning turbofan engines with thrust vectoring. Future production models are expected to use the NPO Saturn Izdeliye 30 engine.
• Dry thrust: 9,000 kgf (88.3 kN; 19,840 lbf) each
• Thrust with afterburner: 15,000 kgf (147.1 kN; 33,070 lbf) each
• Maximum speed: Mach 2.0 (2,135 km/h; 1,327 mph) at altitude
• Range: 1,500 km (930 mi) internal; 3,500 km (2,175 mi) with external fuel tanks
• Combat range: 1,500 km (930 mi) internal
• Service ceiling: 20,000 m (65,617 ft)
• Armament:
• Guns: 1 × GSh-30-1 30mm autocannon
• Internal bays: Up to 8 air-to-air, air-to-surface, or anti-ship missiles, including R-77M (AA-12 Adder) medium-range air-to-air missile, R-74M (AA-11 Archer) short-range air-to-air missile, Kh-38M air-to-surface missile, and Kh-58UShKE anti-radiation missile.
• External hardpoints: 6 underwing hardpoints for additional weapons or fuel tanks (though their use can compromise stealth).
• Avionics:
• Sh-121 integrated electronic system
• N036 Byelka AESA radar complex (including N036-01-1 frontal X-band AESA radar, N036B-1-01L side-looking X-band AESA radars, and N036L-1-01 K-band AESA wing-edge radars)
• L402 Himalayas EW (Electronic Warfare) suite
• 101KS "Atoll" electro-optical system (including 101KS-V IRST, 101KS-O IR countermeasures, 101KS-U UV missile warning, and 101KS-N targeting pod)

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26/09/2025

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**Stroke 1: Intake Stroke**

Illustration:
A high-definition technical illustration showing the cylinder of the steam engine with the intake valve open. The piston is at the top of its stroke, and the cylinder is filled with high-pressure steam from an external boiler. The steam enters the cylinder through the intake valve, and the piston starts to move downward.

**Key components:**

* Cylinder
* Intake valve
* Piston
* High-pressure steam from the external boiler

**Stroke 2: Expansion Stroke**

Illustration:
The intake valve closes, and the piston continues to move downward, driven by the expanding high-pressure steam. The steam pushes the piston down, transferring its energy to the crankshaft, which converts the linear motion into rotational energy. The illustration shows the piston at the bottom of its stroke, with the steam having expanded and done its work.

**Key components:**

* Cylinder
* Piston
* Crankshaft
* Expanded steam

**Stroke 3: Exhaust Stroke**

Illustration:
The piston starts moving upward, pushing the exhausted steam out of the cylinder through the exhaust valve. The exhaust valve opens, allowing the low-pressure steam to escape into a condenser, where it will be cooled and condensed back into water. The illustration shows the piston at the top of its stroke, with the exhaust valve open and the exhausted steam exiting the cylinder.

**Key components:**

* Cylinder
* Piston
* Exhaust valve
* Condenser

**Stroke 4: Compression Stroke**

Illustration:
The exhaust valve closes, and the piston continues to move upward, compressing the remaining steam and any residual gases in the cylinder. The compression stroke prepares the cylinder for the next intake stroke, ensuring that the cylinder is ready to receive a fresh charge of high-pressure steam from the external boiler. The illustration shows the piston at the top of its stroke, with the cylinder sealed and the steam compressed.

**Key components:**

* Cylinder
* Piston
* Compressed steam and residual gases

These four strokes - Intake, Expansion, Exhaust, and Compression - make up the complete cycle of a Steam External Combustion Engine. The high-definition technical illustrations showcase the intricate details of each stroke, highlighting the engine's components and the flow of steam throughout the procesion

22/09/2025

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21/09/2025

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