boiler endplates and tubes

Brass Fittings and Boilers

June 10, 2020 Nigel 0

I’ve been reading so much about copper boiler making and materials that I thought I would pull a page together on the subject of Brass Fittings and Boilers. The research was based around the miniature traction [more…]

stuart turner 10V

Compressed Air System Efficiency

May 7, 2020 Nigel 0

When I run engines on compressed air I often wonder about the efficiency. A large electric motor driving a piston compressor that is in turn supplying a small engine that is sometimes barely able to [more…]

1960s Ford Differential

Vehicle Differential

April 25, 2020 Nigel 0

Geared device between the driven wheels to allow varying rotational speeds of the wheels around corners. We see differentials in everything from the Chinese cart that has an arrow that always points south, in steam [more…]

lithium ion battery schematic

Battery Pack Design

April 25, 2020 Nigel 0

A battery pack design could be for a single or group of cells arranged in series and parallel, depending on application this may include: thermal control, electrical switching and management system. In it’s simplest for [more…]



April 11, 2020 Nigel 0

The aerofoil is a cross-section shape of a wing taken at right angles to the wing span. Also known as the wing section or rib section. An aerofoil is shaped so that air flows faster [more…]

microclene fan

Fan Design

April 8, 2020 Nigel 0

One of the most important considerations in fan design is that the fan must impart a uniform velocity over it′s entire area. There are several simple relationships between fan capacity, pressure, speed, and power, which [more…]

steam indicator diagram

Steam Engine and Boiler Efficiency

March 29, 2020 Nigel 0

Having approximated the engine’s steam consumption at a given speed and having calculated the consumption of fuel for the boiler I should now be able to calculate the Steam Engine and Boiler Efficiency. References Condensers [more…]

heating silver steel with blow torch

Heat Treating Silver Steel

March 15, 2020 Nigel 0

This article is all about heat treating silver steel. There are many different types of steel, silver steel a really useful material for the hobbyist if you learn about heat treating it. Heat uniformly to [more…]

engine valve stood on caliper

Air Intake System

February 17, 2020 Nigel 0

The air intake system channels clean air and fuel to an internal combustion engine. The primary function is to channel clean and cool air to the engine. In indirect injection engines the fuel is added [more…]

1/4 inch spark plug

Engine Ignition System

February 8, 2020 Nigel 0

When we talk about the engine ignition system there are two fundamental types: compression ignition spark ignition. This is the system for igniting an fuel-air mixture that has been compressed in the cylinder by the [more…]