This is an NMPRA EF1 (Electric Formula 1) pylon racing course model based on the Sierra Nevada airport. It is the "Official" size and configuration course for EF1 planes and is the EF1 375' x 375' x 100' three pole course. You can find more planes, and courses at http://ef1pylon.com ... They will be coming to these swap pages as well as pylon racing Warbirds, Club 40 Glow and Electric planes, Quickie 500, and Q40 Racers, along with the appropriate pylon courses. You can fly any kind of plane on the course and get some speed and precision flying from trainers to planes up to about 130 mph. Beyond that, you need a longer and larger course,