Amato Prati's SPEED KING
Here is of a paper model of Amato Prati's SPEED KING control line speed model: http://www.webring.org/l/rd?ring=papermodelwebrin;id=9;url=http%3A%2F%2Fdigilander%2Elibero%2Eit%2Fucontrol2000%2FU-Control-2000%2Fpaperindex%2Ehtm
There is a category of control line flying for speed with classes based on motor displacement. It was powered by a high rpm 2 cycle single cylinder motor run on a mix of nitromethane, methanol, and castor oil. The steel control lines are about 50 feet long with two lines controlling the elevator for pitch control.
The Speed King is a 50s vintage model with a light metal belly pan and the rest of the model is made of balsa, basswood, maple, and plywood. Modern speed models are mostly light metal and composites with a single inboard wing.
Here is a video of 2013 control line speed flying:
https://www.youtube.com/watch?v=FVBu33otfr8