tohatsu prop chart & prop question

duckjunkie

Cadet
Joined
May 31, 2010
Messages
7
can anyone tell me what the "C" stands for in front of some of the listed props in the prop chart in the owners manual for 40-50 hp. tohatsu. not all props listed have the "C" in front of them. i didn't know if this was to show a cupped prop or what. want to order a stainless prop and get as close as i can to staying at rpm's i am running now. my 40 hp. shows a "c" on one blade and 12.5 on another. thanks for your time and help, duckjunkie
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: tohatsu prop chart & prop question

If a prop is cupped it is usually visable.If your looking at a ss prop it is likely cupped.
Why the ss prop?
Going from al to ss ii's difficult to predict results.Depending on your present results it could it could vary from several mph to several tenths per hour.
 
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