[Rhodes22-list] Thru hull drains

[Peter and Jennifer]

very professional job. we just ground out a portion of the thru-hull flange at the lowest point. scruffy but works. not a structural issue.have in the past driven a dowel [3/8"+] into the thru hull after removing the nut. this allowed the pilot drill on the hole saw to center the new hole. what was left of the old flange [a ring 1/8"+/-] was chipped off. again a little messy but unit was in with 5200 so was not coming out.peter

> From: gstewart8 at cogeco.ca
> To: rhodes22-list at rhodes22.org
> Date: Sun, 14 Apr 2013 22:34:43 -0400
> Subject: Re: [Rhodes22-list] Thru hull drains
> 
> If you are referring to the two upper drains at the back on either side of
> the lazarette, yes. I have done it - twice. First time as the easy way and
> the second time was the harder but better way. 
> 
> The original drains in my 74 model were very small and drained through a
> 1/2" hose which were constantly clogging with leaves and dirt. I replaced
> the drain thru-hulls in the seat and the transom with 1.5" mushroom top ones
> and that worked well in the sense that they did not clog. However the
> mushroom top thru-hull with the rounded top would never drain the
> surrounding area completely and I had a small puddle that left a perpetual
> dirty stain on the gel coat around the mushroom top. I wanted to install a
> flat top cockpit drain but did not have a tool that would cut the tapered
> hole and even if I did have one the fibreglass in that area was too thin.
> However the area around the hole dips down and leaves a depressed area that
> I thought could be built up to the point where it was flush with the bottom
> of the drain troughs and at the same time give me enough thickness for the
> bevelled top of the thru-hull. I could use the new thru-hull as a mould  to
> form the bevelled top.
> 
> I bought two flat top cockpit drain thru-hulls  and wrapped them in plastic
> so they would not stick to epoxy and then used them as a mould to create the
> seats  for them in the depressed area around the drain hole. I first
> attached a piece of plywood on the underside side of the hole with thickened
> epoxy and when it has set used a hole saw to make an opening large enough to
> fit the shank of the new thru-hull.  I then inserted the wrapped thru-hull
> into the hole and packed epoxy thickened with fairing compound around it and
> filled the depression so that it was flush with the bottom of the troughs.
> As soon as the epoxy was stiff I removed the thru-hull  and once it hardened
> sanded and faired around the hole until it looked right. This left a hole
> with a tapered hole that fit the thru-hull perfectly and removed the
> depressed area around the hole where water would pool.
> 
> I can now insert, and if necessary remove, the flat top thru-hull, by
> threading the holding nut up against the plywood piece that I installed
> earlier. I then ran some tubing to the thru-hull in the transom. 
> 
> I have attached a picture of the flat top thru-hull when it was wrapped up
> in plastic and electrical tape and a picture of the reshaped seat area
> before final fairing, with a hole that fits the thru-hull. Of course I had
> to paint the area  but given that I am painting the whole deck and cockpit
> anyway, that was not a problem. Otherwise you would need to gel coat the
> area. Now it drains rapidly, does not clog and leaves no puddle to stain the
> boat. My boat is old (74) so this design problem might well be fixed bin
> newer boats. If you want a picture of the final product let me know and I
> will post one once the boat is uncovered.
> 
> Graham Stewart
> 
> 
> -----Original Message-----
> From: rhodes22-list-bounces at rhodes22.org
> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Peter and Jennifer
> Sent: April-14-13 8:49 PM
> To: rhodes22-list at rhodes22.org
> Subject: Re: [Rhodes22-list] Thru hull drains
> 
> just had Edvin at the plant do mine last month. he almost insisted as the
> old style blocked up all the time and caused all kind of issues with the
> cockpit core and lazarette which he had fixed earlier. this was done at very
> small cost and worth the effort, especially as the boat is dry sailed and
> unattended for months at a time.peter cool change 1979 NC
> 
> > Date: Sun, 14 Apr 2013 16:56:18 -0700
> > From: trpclman at yahoo.com
> > To: rhodes22-list at rhodes22.org
> > Subject: [Rhodes22-list] Thru hull drains
> > 
> > I'd like to replace the rear drains with bigger ones as I'm having issues
> with them clogging. Has anybody done this?
> > 
> > Luis
> > 
> > Sent from Yahoo! Mail on Android
> > 
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