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Catalina/Capri 25/250 Sailor's Forums

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Water through the keel cable hose

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IndyJim
Navigator

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USA
130 Posts

Initially Posted - 05/10/2004 : 01:02:28

Greetings Fellow C-25 Skippers! I've chimed in many times on other skippers issues that I've experienced but this is my first time to start a question/answer thread.

A year ago I replaced an '84 Evnirude 2 stroke outboard with a new 4 stroke Yamaha. No, this is not an outboard question. I love my Yamaha. But prior to the change I had never experienced water coming up through the swing keel cable hose when motoring in reverse.

Even though I replaced a 9.9hp with an 8hp, I have much much more thrust with this motor and prop. At first I thought I needed to use lower rpms with the additional thrust, but I'm still getting water up through my keel cable hose regularly. It's not a massive flood or anything but it IS enough to get some debris and a wet cushion around the hose in the quarter birth. (cable and all hardware was replaced just prior to the new motor and workes fine)

Am I the lone ranger? (or skipper) Do any of you swinger skippers experience this? I seldom raise the keel since I am fortunate to have a deep slip and only trailer the boat a couple of times a year. So, I have wrapped a towel around the top of the hose, but I'm still getting some water.

Since I have an '84 C-25, my motor mount is on the starboard side of the stern. (That would make it a Mark II, but that's a can of worms I don't care to open) I just can't see how the reverse thrust travels up the hose so fluidly and frequently.

Any advice or suggestions would be much appreciated. TGISS! Thank Goodness It's Sailing Season!

Jim on "Itza Dew Sea"
'84 SK/TR #4525

Edited by - on

Buzz Maring
Master Marine Consultant

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USA
1771 Posts

Response Posted - 05/10/2004 : 08:05:50

Hi Jim,

I've only had water come up through the keel hose while motoring in reverse AND raising/lowering the keel at the same time ... 'sounds to me like yours spurts water even if you are doing nothing with the keel ... is that right? If so, that's a new twist (to me, anyway).

When this came up in the past, I don't think we ever figured out the physics behind it. The only solution seemed to be to put a sponge or two in the hose ... maybe that would work better for you than the towel.

I'm stumped ... maybe someone else can figure this out. I wonder if anyone has ever asked Catalina about this problem ...

Edited by - on

OJ
Master Marine Consultant

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USA
4382 Posts

Response Posted - 05/10/2004 : 11:12:06

Same thing happens with our Yamaha 4-stroke. I think it's due to the high-thrust prop.

Everytime the cabin sole needs to be swabbed the admiral just says "honey, could you rev the motor in reverse for a few seconds

." Now if we could just figure out how to have it inject some Simple Green at the same time.

Edited by - OJ on 05/10/2004 14:17:38

dbehling
1st Mate

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USA
68 Posts

Response Posted - 05/11/2004 : 02:35:26

We've recently had problems where we have found water in the bildge. At first we thought it was the sink or icebox not draining properly. I think we have ruled that out. But after reading these threads, this may be our problem. We just had our boat in the delta and the slip we were in, we had to raise our keel everytime we left slip. (Some shelf below us, low tide was worse) Then when we would go in reverse (to remove debri, like plant life) off the rudder. With raising and lowering the keel and then going in reverse like this. Im wondering if this is where some of our bildge water had come from. Because during the week of no use, dry as a bone.

But as a separate point, our icebox isn't draining, any advice?

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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts

Response Posted - 05/11/2004 : 07:46:59

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by dbehling
 

But as a separate point, our icebox isn't draining, any advice?
<hr height="1" noshade id="quote"></blockquote id="quote">
Don't use it. There is little to no insulation anyway. I just set a tall "oscar" cooler in mine.

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ddlyle
Captain

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302 Posts

Response Posted - 05/11/2004 : 14:01:58

I have experienced this from time to time too. (Discovered after the fact but I presume caused by reverse since I have to back into my slip.)
I THINK (from earlier posts) we decided it is caused from the cavitation, and the little air bubbles come forward seeking a way to the surface.
The cable hose is the first likely place the bubbles come to and the additional bubbles following along cause the water in the hose to "percolate" up until the water spills out onto the quarterberth.

In forward the cavitated bubbles just exit harmlessly behind the boat.
In reverse the bubbles travel toward the bow.

To fix ... some have suggested stuffing a sponge down the cable hose. It'll stop the water from percolating all the way up. I wouldn't stuff too many sponges down there. One ought'a do it.

Edited by - on

IndyJim
Navigator

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USA
130 Posts

Response Posted - 05/11/2004 : 23:35:14

Thanks for all the information. It's good to know I'm not the Lone Skipper experiencing the fountain of love when in reverse. I'm going to do the sponge thing. That should dampen and reduce any upward flow.

The first couple of times I discovered a little water in the bilge and after a full scale nautical investigation (Admiral in the cabin when leaving the dock)I learned that it was just a little backwash from motoring in reverse.

Thanks again for the assistance. This is a great information resource and you guys and ladies are fantastic!

Fair Winds!

Edited by - on

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The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.