The Sound Of Speed
'THE sound of some of the x outboard speedboats racing on the Estuary and at the New Brighton Power Boat Club’s recent regatta at Lake Forsyth mystified many spectators. They wondered why such comparatively small engines made so much noise. Many of the outboards have exhaust stacks shaped like small megaphones. At Lake Forsyth, along the eastern shore, the boats sounded like lunatic eggbeaters from some science fiction yarn; along the hills lining the western shore, the engines sounded like berserk blowflies.
The use of the short exhaust stacks, by allowing the gases to escape from the cylinders block without any restrictions at all, increases the speed of the boat—some boats do up to 8 miles an hour faster With short stacks. The higher the revolutions of an engine, the higherpitched the magnified sound of the engine through the : stacks. Moonshot, in particular, at Lake Forsyth sounded almost hysterically annoyed as she was driven along the foot of the hills with engine whine reverberating across the water.
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Bibliographic details
Press, Volume C, Issue 29674, 18 November 1961, Page 9
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171The Sound Of Speed Press, Volume C, Issue 29674, 18 November 1961, Page 9
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