[Rhodes22-list] silencing internal mast cable slap

[Geankoplis]

Hey Mike,
	The cable slap was driving me nuts last year.  My solution was to
measure the diameter of the nipple on a can of instafoam drill one size
larger hole into the bottom of an empty tomato can and "test" how much came
out in a second or two when I pressed the nipple into the hole. Once I
established the volume released for the time With the mast laid down I
drilled a series of holes on the front of the mast about 4-5 feet apart.
Stuck the foam can into the holes for the right amount of time (about 1.5
seconds) and easily and quickly solved the problem.  The advantage of this
method is that I also compartmentalized the mast so should I ever take a
really bad knockdown and put the mast under the water (only happened once so
far to me) I won't have the void where the wires are take up the extra
weight in water.  This last trip no wire slap.  (did have a little IMF tube
rattle, but haven't figured out how to fix that).  Hopes this helps.

Chris G
Enosis 

-----Original Message-----
From: rhodes22-list-bounces at rhodes22.org
[mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Mike Cheung
Sent: Friday, July 16, 2010 15:57
To: rhodes22-list at rhodes22.org
Subject: [Rhodes22-list] silencing internal mast cable slap


I read here that folks have used pipe insulation to silence the "cable slap"
from the cables running inside the mast.  I just put two 6' sections of
insulation onto the radio and masthead light cables, but that's all I was
able to push on.  I think that the insulation is hanging up on the bolt for
the spreaders.  I imagine that if I pull that bolt I'll be able to push more
insulation up the mast.  

My question is: Is it worth it to pull the spreader bolt or is what I've got
in there so far (about 12' of insulation) enough to end the cable slap?  

As you can tell, I'd prefer to not pull the spreader bolt if I don't need
to.

Thanks!


-----
Mike Cheung
s/v Muireann 1993/2008 Rhodes 22
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