Cutting Brass on a Bandsaw
Cutting brass on a bandsaw can be difficult and so I devised this simple modification to overcome two of the main issues. My solution was to fit an MDF board on top of the cast [more…]
Month: February 2020
Cotter Pins
Cotter pins or split pins are half round wire pins that are formed such that they can be pushed through a hole and the legs then bent to stop them sliding out. This means they [more…]
Rear Wheel Hubs
The rear wheel hubs for the miniature traction engine that I’m making need to be indexed with eight spokes each side of a single wheel. The trick is that the spokes are out of “phase” and [more…]
Air Intake System
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…]
Corrections Needed for Marble Run
The marble run is working rather well, but now I’ve been using it for some time I’ve realised there are some issues. The trouble is I keep forgetting the issues and so I thought I [more…]
Engine Ignition System
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…]
Model Engineering SEO
What do I mean by Model Engineering SEO? SEO is search engine optimization, model engineering is a hobby that feels very vibrant, but the view is it is dying out. Let’s start with the perhaps [more…]
Lead Acid Battery
The Lead Acid Battery is a battery with electrodes of lead oxide and metallic lead that are separated by an electrolyte of sulphuric acid. The overall reaction is: PbO2 + Pb + 2H2SO4 <=> 2PbSO4 [more…]
Nickel Metal Hydride Battery
The Nickel Metal Hydride battery has a nickel-hydroxide cathode, a metal hydride (a variety of metal alloys are used) anode, and aqueous potassium hydroxide electrolyte. This is a rechargeable battery chemistry that has been superseded [more…]
Lithium Ion Battery
In a rechargeable lithium ion battery lithium ions move from the negative electrode to the positive electrode during discharge, and back when charging. The cathode is a lithium transition metal oxide, eg manganese or cobalt [more…]