- I talked with a CN35 owner friend of mine (#216 Brandy) and he had the same
experience as i did when he stripped the rudder down. namely a lot of
slurry drained out (water and foamcore) and a hell of a lot of voids left
in the rudder. We will be trying to fill the voids by drilling and
injecting West as best we can. I don't know if this is just a result of the
freezing and thawing cycle here in the East. has anyone else stripped the
gelcoat off the rudder or otherwise closely examined its condition?
S/V Dark Lady
- Hello Dennis,
Hows the Stantion post?
Rudder delamination and disintegration of the foam core.
What a great title for a book.
I had this exact same thing with the rudder on TTFN (Nic 30) year before
Drill through with 1/4"
grind bottom off, or drill up through the bottom. This is just to let
the liquid drain out.
Attach 50Lbs breaking strain fishing line with knots in one end to the
end of a 1/4" drill.
Push drill bit through hole and run drill. This will breakup the damaged
foam. Do this at each hole.
flush whole rudder with fresh water. Hang rudder up in a warm place to
dry (I used a corner of the lounge at home)
When dry, lay some sand bags on the ground. these need to take the shape
of the rudder. Cover the holes on one side with tape. lay this side down
on the sand bags. have more sand bags ready to place over the top of the
rudder when the next few steps are finished.
Mix a slow cure Epoxy to the consistency of ketchup (catsup if US) by
adding "Micro Balloons". These are essential as the rudder should have
negative buoyancy. So, by using Micro Balloons as the filler you build
buoyancy in to the Epoxy.
Use a large hypodermic syringe to inject the Epoxy into the rudder.
Inject at each hole and when the Epoxy comes out of the hole move on to
when you have finished all of the holes tape over them. Place the sand
bags on top of the rudder. This will press the GRP laminates in to
compression with the Epoxy.
Leave the Epoxy to set and then fair and anti foul
This worked even better than I had expected it to. TTFN's rudder is
transom hung and getting the correct buoyancy could have been a problem.
The Micro balloons worked a treat.
I have more info on this if you need it.
Best of luck and don't be afraid.
Simon S. Bradshaw
TOPCALL UK Limited
Communications Process Re-Engineering
DDI - 0118 952 8917
PBX - 0118 952 8900
FAX - 0118 952 8901
CELL - 07775 655 101
URL - www.TOPCALL.com
> From: Dennis Gibbons
> Reply To: email@example.com
> Sent: 03 February 1999 14:40
> To: firstname.lastname@example.org
> Subject: [campernicholson] Rudders
> From: Dennis Gibbons <dennis-gibbons@...>
> I talked with a CN35 owner friend of mine (#216 Brandy) and he had the
> experience as i did when he stripped the rudder down. namely a lot
> slurry drained out (water and foamcore) and a hell of a lot of voids
> in the rudder. We will be trying to fill the voids by drilling and
> injecting West as best we can. I don't know if this is just a result
> of the
> freezing and thawing cycle here in the East. has anyone else stripped
> gelcoat off the rudder or otherwise closely examined its condition?
> Dennis Gibbons
> S/V Dark Lady
> To unsubscribe from this mailing list, or to change your subscription
> to digest, go to the ONElist web site, at http://www.onelist.com and
> select the User Center link from the menu bar on the left.
- At 09:40 AM 2/3/99 -0500, Dennis Gibbons wrote:
>... has anyone else stripped theI just had my rudder rebuilt. We had previously drilled holes in the
>gelcoat off the rudder or otherwise closely examined its condition?...
bottom edge - and water poured out. We then drilled large (4" +/-)
diameter holes from one side, starting near the top of the rudder, and
going down the spine on about 8" centers, to the bottom. We then could
reach inside, and rip, scrap, and ream out all (hopefully) the corrupted
foam core. We then replaced said rotten core with two-part floatation
foam, glassed into place the 4" hockey puck hole covers, and put a new
layer of glass over all.
Hopefully, we will now get another 25 years of service out of the rudder.
s/v Equus, CN 48, on the hard in Sandusky, Ohio
"I know nothing - nothing do I know - but I go to free myself from the
Wheel of Things by a broad and open road." R. Kipling.
- Oh NO! Not something else to worry about.
We have noticed that our helm seems heavier this last year, and not much
relieved by lubricating the sheaves.
I guess we'll have to investigate when we haul next Fall. Thanks for the
information and any other tidbits you might have.