I had a whole episode last spring after launch where the new speed transducer was leaking. We had a terrible experience at the boatyard where we launched and once the boat was splashed I wanted to get the hell out of there ASAP. I checked "all" the thru-hulls and none were leaking. Fired up the A4 and took off. Half way back to our club I asked my girlfriend to check the bow where the new speed transducer was, I had forgotten to check that one! And though the water level in the bilge remained low I thought "better safe". She yells from the v-berth "it's full of water here". I figured she was joking. Once it was determined that she wasn't joking my heart sank. I didn't want to have to pull the damn boat again! The yard would rape me!
I was puzzled (still motoring around at this point trying to figure out what the hell to do). The limber hole from the bow section to the bilge was glassed over! argh Hence no indication from the bilge pump. Long story less long, the transducer was leaking between the housing and the paddlewheel plug. WTF?!? I knew that I had bedded the housing/thru-hull properly (I'de gone through that exercise with the other thru-hulls the season prior) and inspection confirmed. Twisting the ducer in the housing yielded changes in the amount of water intrusion. Anyway, I managed to get the leak down to a reasonable "won't sink the boat overnight" level and called it a day. Came back early in the morning and bailed out the bow compartment and fixed the leak with oversized o-rings I got at Home Depot. I could still make it weep by twisting the ducer so I found a nice position where it wouldn't leak and left it there. Not ideal. I plan to replace that housing with the bronze offering before launch. I think because the hull is curved there the housing may have deformed ever so slightly causing the o-rings not to seal properly. Larger o-rings are not an elegant and worry-free solution so I'll caugh up the dough for the bronze thru-hull/ducer. I probably already posted this stupid story here before ... the point being that I'm not excited about more holes in the boat :) Also work. Drilling and stuff, that's work! I have enough work to do on the boat. I'll try the silicone first, it's easy enough. If that doesn't work I'll drill. Thanks all. Steve www.sv-suhana.com Toronto On Thu, Feb 13, 2014 at 11:34 AM, Rich Knowles <r...@sailpower.ca> wrote: > Correct! :) > > Rich > > On Feb 13, 2014, at 12:25, "dwight" <dwight...@gmail.com> wrote: > > I would not hesitate to put a plug in any hole that was letting water > into the boat, would you? One less hole in the hull if it is not needed > is a good thing by my standards, and that says nothing about doing these > necessary holes in the right way...just one less means one less to do right > > > ------------------------------ > > *From:* CnC-List > [mailto:cnc-list-boun...@cnc-list.com<cnc-list-boun...@cnc-list.com>] > *On Behalf Of *Rich Knowles > *Sent:* February 13, 2014 12:11 PM > *To:* cnc-list@cnc-list.com > *Subject:* Re: Stus-List Drill another hole? > > > > A through hull or hose can fail. Hence the plug. Not to fill a hole in the > hull itself. > > Rich > > > On Feb 13, 2014, at 11:51, "dwight" <dwight...@gmail.com> wrote: > > Still, these holes are one of the main reasons for carrying plugs...I have > never had to use a plug > > > ------------------------------ > > *From:* CnC-List > [mailto:cnc-list-boun...@cnc-list.com<cnc-list-boun...@cnc-list.com>] > *On Behalf Of *Rich Knowles > *Sent:* February 13, 2014 11:15 AM > *To:* cnc-list@cnc-list.com > *Subject:* Re: Stus-List Drill another hole? > > > > Re plugs: I've had 14 boats with many holes in each of them and have yet > to have a problem other than stuck valves. I have installed many > transponders in all kinds of boats, and I have yet to see a properly > installed through hull transponder leak or cause any problems. I think the > fears of drilling holes in hulls are unfounded. Just sayin'... > > Rich > > > On Feb 13, 2014, at 11:04, "dwight" <dwight...@gmail.com> wrote: > > That is correct, so it looks like an upside down mushroom when mounted > in the silicone...use a good size glob of silicone and make sure there are no > entrapped air bubbles in it before you attempt to mount the transducer...as > the excess squeezes out some will rise to just about the edge of the > mushroom....I would guess the thickness of silicone between the transducer > and the hull when you have it mounted won't be much but it must not contain > entrapped air bubbles, just won't work well if it does...I simply held mine > down hard for a few minutes not until the silicone had fully cured but > within a day the silicone had cured. My boat was in the water when I did > the mount so I was able to get instant feedback. Holes in the hull are the > primary reasons we all carry plugs > > > ------------------------------ > > *From:* CnC-List > [mailto:cnc-list-boun...@cnc-list.com<cnc-list-boun...@cnc-list.com>] > *On Behalf Of *Stevan Plavsa > *Sent:* February 13, 2014 10:51 AM > *To:* cnc-list@cnc-list.com > *Subject:* Re: Stus-List Drill another hole? > > > > Dwight, I believe the ST-60 uses the same transducer as the ST-40 that I > have. Yours is designed to be used as a thru-hull correct? > > > > Steve > > www.sv-suhana.com/ > > Toronto > > > > > > On Thu, Feb 13, 2014 at 9:38 AM, dwight <dwight...@gmail.com> wrote: > > Steve > > > > I have a Raymarine st60 system. The transducer is the ordinary thru hull > unit. A few years back I cleaned the inside of the hull well with acetone > in the spot I wanted to mount it and simply plunked it down in a big fresh > glob of GE 100% silicone sealant...you have to plunk it down on a slant and > hold it down for a while so as to squeeze out any air bubbles that might > get entrapped. It has worked very well for the last 4 years. You may be > able to do something like that with your new transducer when you mount it > up forward and avoid making another hole. I plugged the hole that mine was > in before I did the inside mount. Mine measures to 200 feet depth at least > but in depths greater than 200 it fails to work so you do lose some range > if that is important to you, 200 feet was fine for me. Anyway you could > try it all out without drilling anymore holes and you could also mount the > old one that way and avoid having to use mineral oil. > > > ------------------------------ > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Stevan > Plavsa > *Sent:* February 13, 2014 10:07 AM > *To:* cnc-list@cnc-list.com > *Subject:* Stus-List Drill another hole? > > > > Hi All, > > > > I installed depth and speed last season and I re-used the old through-hull > transducer (no hole) and that works fine. However, that transducer is > located under the starboard settee (the one forward of the nav station) and > because it needs to be encased in mineral oil (or whatever it is in there) > it's in a big piece of pipe right in the middle of that storage area. > Needless to say, I don't use that storage area very much and I would like > to. > > > > I've also had some problems with the depth instrument, sometimes it stops > reading and I suspect the old cable or the transducer. > > > > My thinking is to drill a new hole in the hull up forward (currently it's > next to the keel), and install the thru-hull that came with the unit and > run the new wire. I'm hoping that this will achieve two things: > > > > better working depth instrument (with full range) > > a usable storage compartment (valuable on my small boat) > > > > Now my question to you all: is it worth the trouble? Drilling a hole in > the boat is typically avoided and I already have the following holes: > > > > Engine raw water intake > > Two scuppers > > Galley drain > > Head drain > > Head intake > > Speed thru-hull > > > > That would make eight with a new hole. Too many? > > I've replaced almost all of the thru-hulls and original gate valves with > new bronze thru-hulls and proper seacocks. > > > > Thanks, > > > > Steve > > Suhana, C&C 32 > > Toronto > > > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > >
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