single throw crankshaft

Crankshaft Design Principles

January 21, 2020 Nigel 0

This page lays out some of the crankshaft design principles along with descriptions of the main features. That part of the engine which transmits the reciprocating motion of the pistons to the driven unit in [more…]

Bellcrank bracket

Transitional Engine Eccentric Bracket

November 16, 2019 Nigel 0

The transitional engine eccentric bracket supports the pivot for a bellcrank midway along the pushrod. This is the part in question, machined from mild steel with phosphor bronze inserts. As you can see, there were [more…]

crankshaft

Crankshaft – Poppet Valve Single

June 2, 2019 Nigel 0

The crankshaft for the poppet valve single cylinder engine has been machined from mild steel and includes timing gear machined directly on the shaft.  This started with a piece of hexagonal mild steel, why hexagonal? [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…]

single cylinder poppet valve engine

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…]

Transitional Engine – Eccentric

April 6, 2019 Nigel 0

The transitional engine eccentric is the drive for the piston exhaust valve, an eccentric is a disc with the rotational centre offset to the centre of the disc. The transitional engine has been on the [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…]