Pulse Jet Speed Rules 4.3 CONTROL LINE SPEED CLASSES 4.3.1 Model Characteristics a) No restrictions on areas or loadings. b) Model may R.O.G. or be hand-launched, except for Jets which will be R.O.G. only c) Detachable undercarriages are permissible for R.O.G. d) For Class V: Models to be upright engine design with a wing not … Continue reading Pulse Jet Speed