One of the most unique features of the 1910 Jopson Motor is the wick carburetor system in the fuel tank. A small plate on the tank holds a series of wicks that are immersed in the fuel and evaporate fuel vapor into the passing air stream, which is then pulled into the combustion chamber.
Art was able to take his engine apart and he documented the wick system (still intact after 100 years!) in photographs and drawings.
![drawn on yellowing grid paper, this hand drawing shows the layout and every measurement of the fuel tank.](https://amablog-modelaircraft-org.s3.us-east-2.amazonaws.com/wp-content/uploads/sites/6/2017/06/NMAMfuel-tank-drawing-by-Gaier.jpg)
![Six lengths of cord held in a pin serve as the wicks in the 1910 Jopson Motor.](https://amablog-modelaircraft-org.s3.us-east-2.amazonaws.com/wp-content/uploads/sites/6/2017/06/NMAM-Jopson-wick1.jpg)
![A close up of the fuel tank after being removed from the rest of the engine.](https://amablog-modelaircraft-org.s3.us-east-2.amazonaws.com/wp-content/uploads/sites/6/2017/06/NMAM-Jopson-wick2.jpg)
![A close look shows that the six wicks are actually three lengths of rope that have been threaded in half through the holder.](https://amablog-modelaircraft-org.s3.us-east-2.amazonaws.com/wp-content/uploads/sites/6/2017/07/NMAM-Jopson-wick3.jpg)
![Drawing on grid paper, the diagram records each wick as 3.5" long.](https://amablog-modelaircraft-org.s3.us-east-2.amazonaws.com/wp-content/uploads/sites/6/2017/06/NMAMwick-holder-drawing-by-Gaier.jpg)
Next up: Did it actually fly?
Come see the engine on exhibit between Memorial Day and Labor Day 2017!
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For more information on the National Model Aviation Museum, including our location, hours and admission fees visit: www.modelaircraft.org/museum