Crankshaft – Poppet Valve Single

June 2, 2019 Nigel 0

This crankshaft for the poppet valve engine has been machined from mild steel and includes timing gear machined directly on the shaft.  The webs of the crank are just wide enough to still fit a [more…]

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…]

Crankcase – Poppet Valve Single

April 28, 2019 Nigel 0

The crankcase for the Poppet Valve Single Cylinder was machined from a cube of aluminium, quite a rough cube that had been laying around my shed for some time. The first job was to machine [more…]

Poppet Valve Single

April 28, 2019 Nigel 0

The idea was to make a single cylinder 4-stroke and to make it simple with a poppet valve. Not sure my terminology is correct here, what I mean is an actuated exhaust valve and an [more…]

Connecting Rod

December 29, 2018 Nigel 0

The part in an internal combustion engine that connects the piston to the crankshaft. It changes reciprocating motion of the piston into rotary motion of the crankshaft or vice versa. A connecting rod consists of [more…]

Transitional Engine – Crankcase

December 24, 2018 Nigel 0

This isn’t much of a crankcase, but that is the best description I can give as it links the cylinder and the main engine frame on my Transitional Engine. The starting point was a 2.5″ [more…]