Engine Capacity

May 26, 2019 Nigel 0

Engine Capacity = Swept Volume = Engine Displacement We use all of these terms interchangeably and they all mean the same thing When we calculate the capacity of an engine it is simply the bore, [more…]

Engine Mount Brackets

May 6, 2019 Nigel 0

When we’re mounting an engine either on isolating mounts or solid into a structure it is really important to consider the design of the brackets. If these brackets have any low frequency stiffness concerns then [more…]

Metric or Imperial Threads

April 20, 2019 Nigel 0

Someone commented to me the other day whilst walking around a car museum in the UK that they couldn’t cope with all of the different imperial threads and the array of spanners that you need [more…]

Radiused Connecting Rods

February 28, 2019 Nigel 0

The formal way to radius the end of a connecting rod is to use a rotary table and an end mill. If you don’t have a rotary table you can make hardened filing buttons and [more…]

Accurately Drilling a Hole

February 28, 2019 Nigel 0

Even in a milling machine with all axes, apart from the quill movement, locked I start with a centre drill. Drill gently to ensure that the centre is perfectly aligned and drill into the material [more…]

Aerodynamic Noise

January 10, 2019 Nigel 0

When we flow gas through a pipe or over a surface (fluid dynamics) we generate noise and sometimes vibration. The noise that is produced can be extreme if there is a feedback system between the [more…]

Centering and Aligning

December 24, 2018 Nigel 0

These tappet covers were rather damaged after a number of years of use and what looks like some rough treatment – looked like a pair of mole grips had been used in the past to [more…]

Flow Noise

November 18, 2018 Nigel 0

A term generally used to describe aerodynamic noise produced when a gas flows within a duct or when the gas exits the duct. This is a typical problem observed in the exhaust systems of internal [more…]

Fuel

September 30, 2018 Nigel 0

The simplest definition is any substance burned for heat or power. Even in the model world this covers a lot of different fuels and so I will try and list them along with data and [more…]

Acoustic Filter Elements

September 28, 2018 Nigel 0

There are a number of different ways to attenuate the sound waves propagating down a duct (eg air intake, exhaust system) and I thought it would be good to list these different elements, how they [more…]