“Control Line Speed”By Gene HempelAs seen in the May 1988 and July 1988 Model Aviations.Dyna-Jet history will be the subject of this month’s column. Gerald L (“Jerry”) Wiles has graciously taken the task of writing an abridged history of this remarkable powerplant for all modelers to enjoy. I have been asked many times how and who developed the Dyna-Jet engine. “At long last, enclosed is my account of some of the history of the Dyna-Jet engine. Also enclosed are a few pictures and descriptions pertinent to that account, selected and copied from the many 8 x 10 originals loaned to me by…