DIY 2 Cycle Steam Conversion

About: David is a professional firearm instructor and Emergency Preparedness Author, He has 10 published works and his website is devoted to teaching individuals how to be better prepared for life and life's disast...

This video shows how to turn a discarded 2 cycle weed eater into a simple steam engine.  In the video I am using an air compressor, but later I created a very primitive boiler from a pressure canner and a safety valve. 

While this is a very easy project, it took me a long time to figure out a relatively safe way to produce steam.  If your going to attempt a project like this, please be aware that a steam explosion will most likely kill or main you, so use a certified boiler.



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    7 Discussions


    4 years ago on Introduction

    do you need to leave the muffler on, I have an old 2 stroke generator and I can see this driving it also how does the sump get lubricated


    5 years ago on Introduction

    The oil reservoir is an in line oiler for air tools right? Would a water seperator before the oil reservoir be a good idea for running on air? Or does it matter?


    6 years ago on Introduction

    very cool project. I appreciate all the details. a couple thoughts to contribute. Most spark plugs are 14mm, so you could use a 14mm threading die to thread the end of your nipple. or rethread your plug hole with a pipe tap. another option is to break the porcelain from an old spark plug and braze it onto your pipe nipple.
    for the flywheel, why not make a steel band around the existing flywheel and pour molten lead into it to fill the vanes.

    4 replies

    Reply 5 years ago on Introduction

    Thanks for the idea i am going to braze a pipe onto my spark plug for this project