Jerry
I understand Ed was one of the first to go over 100MPH in a tether boat. He was running that homemade .90 engine when I knew him. Side exhaust on both sides with two expansion pipes.
Bill
When I started in RC in the early 70's I became friendly with a famous tether boat guy named Ed Kalfus. He had gotten into rc boats about that time and all his equipment was homemade including his own digital radio design. He had a younger apprentice by the name of Jim Allen who a lot of you...