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Catalina/Capri 25/250 Sailor's Forums

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Accessory mounting system

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britinusa
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USA
5404 Posts

Initially Posted - 12/07/2012 : 20:18:02

Despite adding Air Conditioning and an electric bilge pump to JD, I really hesitate at drilling new holes in the Hull.

However, accessories break (AC pumps, Bilge pumps, water pressure pumps, etc.) and having to replace them with the resultant new hull drillings is an issue for me.

So I developed the Accessory Mounting System.

The idea is to provide a platform base for the accessory that allows for easy removal and or replacement without having to drill new holes.

Here's an example that shows the concept.
<center>[url="https://www.catalina-capri-25s.net/cgi-local/MBR_system.cgi?VM+1000-1403"]

Click to View Full Sized Image[/url]
Accessory Base Plate System
The Accessory is screwed to a plate of Starboard which has angled side that will match similar angled sides that are screwed to the base plate.</center>

<center>[url="https://www.catalina-capri-25s.net/cgi-local/MBR_system.cgi?VM+1000-1388"]

Click to View Full Sized Image[/url]
The Pump Base Plate
The space under the bilge is very limited so I wanted a means of securing the AC pump system while allowing easy removal for repairs/replacement. I made this base plate from Starboard, works really well. It will be glued with 3M 5200.</center>

<center>[url="https://www.catalina-capri-25s.net/cgi-local/MBR_system.cgi?VM+1000-1389"]

Click to View Full Sized Image[/url]
The Pump Base closed
The Pump is mounted on a smaller base plate that has angled side edges that match the sides of the securing plates all mounted on the base plate. Two screws at the back of the base plate stop the Pump base plate moving beyond them. The wooden fillet holds the pump base plate in position.
To remove the pump I just have to pull out the wooden fillet and slide the pump base out of the base plate. The base plate remains (glued) in place in the bilge.</center>

Paul

Joint Decision. (Sold)
PO C250WB 2005 Sail # 841.

Moved up to C34 Eximius

Updated August 2015

Edited by - britinusa on 12/07/2012 20:24:34

rrick
Captain

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USA
261 Posts

Response Posted - 12/08/2012 : 00:03:33

That's not Starboard, it's cutting board

You'll have adhesion if you screwed the cutting board to some marine plywood first, then glue to the yacht.
Nice work. Aerospace level engineering as in redundancy is now a possibility on critical systems (swap in a spare bilge pump).

Edited by - on

Ape-X
Admiral

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USA
662 Posts

Response Posted - 12/08/2012 : 04:44:26

nicely put together, my first thought was this system was raising the pickup, until I looked closer. WELL DONE!!!

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britinusa
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5404 Posts

Response Posted - 12/08/2012 : 06:08:17

Thanks guys.

Earle, you are correct! It's cutting board, but the glue has held for 7 years

. I was under the impression that Starboard also had an adhesion issue. I use both materials in my projects. To make the edges clean (if not original) I use an edge plane, cuts the plastic really neatly. For the glued areas, I really rough up the surfaces. Basically, I scrape them with the side of an old tenon saw blade.

Michael... 'raising the pickup', that went over my head.

Paul

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Ape-X
Admiral

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USA
662 Posts

Response Posted - 12/08/2012 : 11:28:58

....but not an issue with that style pump. I am most familiar with the fully self-contained units, with flapper switch and intake in the bottom of the pump unit itself.

Overall a really nice concept: I like the retainer block, omething like this design would work for something with quick and often changeouts.

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Prospector
Master Marine Consultant

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Canada
3159 Posts

Response Posted - 12/10/2012 : 11:33:23

I like it, but I would be a little nervous about the hunk of wood in the cutting board handle coming loose in rough seas. Have you cut a Dado in it for the top plate to lock into or something?

I might be tempted to put in a T-Bolt and thumbscrew to hold things in place, but that negates the quick swap you would need with the bilge pump if you ever actually need this in an emergency.

Good idea though. I can see a few applications for it. Have you applied for the patent yet?

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Tradewind
Admiral

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USA
531 Posts

Response Posted - 12/10/2012 : 17:20:51

Very nice installation but I don't understand why you're using an AC pump, is it for the air conditioner? Unless there's an inverter it's only useful at the dock with shore power.

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britinusa
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5404 Posts

Response Posted - 12/10/2012 : 17:46:55

The pic in this thread shows the Air Conditioner Pump.

We carry a 1,700 watt generator on board that we can use when at anchor or alongside an unpowered dock.

The AC unit requires 110v for the pump and the condenser/fan unit.

The wooden wedge is a really secure fit and has not become loose since installed in 2005. It held even during thee 13 hours of sea pounding when we took JD over to Bimini in 2007.

The securing method demands easy access when the base plate is in an awkward place, like tucked up inside the bilge beneath the aft berth.

Paul

Edited by - on

zeil
Master Marine Consultant

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Canada
1314 Posts

Response Posted - 12/10/2012 : 21:03:11

Paul,

Really like your concept and execution...

Just curious... where and how do you store the 1700 watt stand by
Where do you place to run the unit while at anchor... any photo's?

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britinusa
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USA
5404 Posts

Response Posted - 12/11/2012 : 04:51:25

<center>[url="https://www.catalina-capri-25s.net/cgi-local/MBR_system.cgi?VM+1000-677"]

Click to View Full Sized Image[/url]
High Humidity
Our Trusty Genny allows us to run the boat`s AC to dry out a bit.
It sits on a foam swim board to reduce the cabin noise.</center>

When underway, we put the Genny ontop of the fuel locker. I made a sunbrella cover for the generator that has a built in cushion. With the Genny in place, it makes a nice butt parking spot

I'll take a pic of it this coming weekend.

Paul

Edited by - britinusa on 12/11/2012 04:52:29

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