[C320-list] Knock, knock, who's there?

[Elizabeth Schwartz]

Ahoy......Had the same sounds on mine during sea trial........found that 
the exhaust hose in lazzerette
was not clamped down.....was thumping on hull below.......reclamped, now 
much improved.....Joe...#245

On Sun, May 10, 2015 at 04:40 PM, B. Stumpp wrote:

> We went out for our first Spring sail this afternoon.  Everything 
> worked
> great BUT with the engine running and turning left I get a knocking 
> sound
> with what seems like every revolution of the prop shaft.  It does not 
> make
> the noise when going straight, turning right or in either direction in
> reverse.     If I speed up the engine the noise  goes faster.  I stuck 
> my
> head in the engine compartment both in front of and behind the 
> bulkhead,
> the sound is emanating farther back towards the stern.  It's not  a 
> real
> loud knock but kind of like someone lightly tapping on the deck with a
> hammer as a surveyor does when checking for moisture.   Before we 
> launched
> the cutlass bearing and strut all seemed fine.  Has anyone experienced 
> this
> before?
>
> Bruce Stumpp
>
> Adventure, #647
> Frog Mortar Creek, Maryland
>
>