Free Metalworking Project Plans: A Simple Two Stroke IC Engine

Material: Steel or Aluminum
Units: (in)

Here’s a set of plans for a nifty little two stroke engine submitted by Shane W., a sophomore studying Mechanical Engineering at the University of North Carolina at Charlotte.

Here’s what Shane had to say about his project:

“This is a two stroke internal combustion engine that I designed for a design class. Though the design is unique and engineered by me, much inspiration was taken from an engine from the 50’s called “The Little Dragon.”

Engines are not exactly simple to make or design, but this one is designed to be as easy as possible to construct, using standard size stock to minimize machining. In fact I was able to build it and get it running with the experience from building a simple air engine and nothing else.

Most of the tolerances are a little tighter than necessary, particularly the bore of the cylinder. You can get away with it being a couple thousandths off.

It runs on 30% nitromethane fuel mixed with castor oil. The plans don’t exactly follow any standard, though they lean toward ansi. In the drawings for the cylinder, con-rod, and piston I used hidden lines to represent tool paths. I don’t have drawings for the needle valve, though many are easily obtainable online, or a pre-made one can be purchased.

- Shane”

Thanks for submitting your plans Shane! Be sure to visit Shane’s site to check out his other projects and to see a video of this little engine in action!

Would you like to have your project featured on this site? If so, do what Shane did and click the “Submit Your Plans” tab at the top of the page.

  Shanes_Two_Stroke_IC_Engine.pdf (156.0 KiB, 2,297 hits)
You need to be a registered forum member (and logged in) to download this file. Click on the "Forum" tab at the top of the page to register or log in (don't worry, it's free).

US $12.00 (0 Bid) End Date: Saturday Mar-13-2010 19:01:49 PST Bid now | Add to watch list

US $48.00 (5 Bids) End Date: Saturday Mar-13-2010 13:03:37 PST Bid now | Add to watch list

US $2.50 (1 Bid) End Date: Saturday Mar-13-2010 10:22:34 PST Bid now | Add to watch list

Tags: Engines, Intermediate, Lathe, Units (in)

This entry was posted on Thursday, May 21st, 2009 at 5:00 PM and is filed under Engines, Lathe Projects. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a comment, or trackback from your own site.