This is one of the O.S. FX Series of High-Performance Engines. This series of engines are Used in Sport and Aerobatic Aircraft. The FXs are Designed to Use a Muffler or Tuned Pipe. This is an ABN Ringed Engine.
For
your science fair projects, you might want more
information on how this kit can help. If so, click on
the "hobbytron" link above to visit our sponsor