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

[Doug Treff]

Bruce, 

How long has your boat been in the water? Sometimes the hull flexes a
little bit while on the hard and it takes several days for it to return
to its natural shape once floating again. If you recently launched, give
things a week to settle out. If it's still happening, have your engine
alignment checked. I suspect it may be an alignment issue. 

---
Doug Treff
doug at treff.us

On 2015-05-10 16:40, 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