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I'm not sure about that one, but I did something similar back when I was
at The Franklin. I took an acrylic or Lexan tube (engine cylinder) and
cut the bottom off of a plastic container that fit inside the tube
(piston). I used a 2.5" tube and left about a 1" skirt on the container.
I cut a mousehole in the bottom of the tube and mounted it to a board.
Then I removed the piezoelectric igniter from a cigarette lighter (spark
plug, and ignition system) and mounted in so the spark wires went
through the mousehole and into the tube. I placed a couple bolts in the
bottom of the tube to keep the cylinder (piston) about 1.5" above the
bottom, the piston skirt should face down. Drill a 1/4" hole in the side
of the cylinder .75"-1" from the bottom. To demonstrate an internal
combustion engine spray Binaca breath freshener or similar into the hole
in the cylinder and then click the igniter. You should get a nice yellow
flame and the piston will shoot up the cylinder. Experiment with
different amounts of spray, or different gases. Make sure not to wet the
cylinder, you want a nice atomized air/fuel mix. Remove the piston
between firings to let the exhaust gas out and fresh air in, or add
intake and exhaust ports to the sides of the cylinder like in a 2 stroke
engine. Have fun, be somewhat careful. 

Lath Carlson
 
Manager of Interactive Technology
Art Guild Inc.
300 Wolf Drive
Thorofare, NJ 08086
Mobile: 215-768-9322
Email: [log in to unmask] 
www.artguildinc.com 
 

-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Chad Johnson
Sent: Wednesday, October 11, 2006 12:22 PM
To: [log in to unmask]
Subject: Internal Combustion

ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****

I seem to remember seeing an internal combustion engine demonstration
using water cooler bottles, corks, and ethanol does any body know what I
am talking about?  We would like to purchase one or build one if anyone
can direct me to a model.

Thanks
Chad Johnson
Director of Education
The Edgerton Explorit Center
http://www.edgerton.org
1.877.694.4032

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