Reply To: Anodes on Evinrude 18 hp 1960

[frankr]

Mumbles wrote:

The proper terminology is anti ventilation plate as it helps to prevent the prop from ventilating to the atmosphere, or sucking in air.  Cavitation is something totally different and can happen to a submarines prop several hundred feet below the surface if it spins too fast. Somewhere in time anti cavitation got applied to it and it seems to have stuck and that is what most people refer to it as.

The discussion comes up every now and then.  Ole Evinrude called it a cavitation plate.  Probably incorrect, but good enough for me.