Reverse-engineering a naturally-aspirated Lunenburg Foundry carburetor

Abstract

The Lunenburg Foundry, based out of Nova Scotia, is a well-known manufacturer for early 20th century marine engines made famous by its Atlantic Marine Engine. This engine revolutionized the fishing industry along the Atlantic coast of Canada by creating a sort of "iron sail" for fisherman and sailors. The goal of this thesis is to reverse-engineer a naturally-aspirated Lunenburg Foundry carburetor from the Atlantic engine. The actual carburetor at MIT is one of few in existence, and has no accompanying patterns or drawings. The carburetor was disassembled and each part carefully measured by hand. A CAD assembly was developed of the entire carburetor to serve as an engineering database for future manufacturing and study.