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Old 12-27-2011, 01:53 PM   #41
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RE: Battery Switch Location and Emergencies

Quote:
FF wrote:
IF someone really slept better with a huge fuse in the battery circuit , it would be no operational danger.

Just use a 1-2 both switch to by pass the blown fuse , if it ever happens.

OF course fixing the fault before switching might be desired.

A simple On/OFF would bypass the fuse.* I think the point is (and why ABYC does not require a fuse) is that the fuse would have to be rated very close to the maximum current that the battery could produce to avoid "nuisance" blowing.

Any fuse and any switch would have to be located very near the battery and might be difficult to get to in an emergency.
*
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Old 12-27-2011, 03:20 PM   #42
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RE: Battery Switch Location and Emergencies

We have a stand up walk around engine room so getting to the battery/fuse is not difficult. I have extra fuses next to the fuse box/link.* 10+ years and not a problem, but then again I know not to get air in the fuel line and/or do not crank and crank and crank and crank the engine.* If it does not start in 5 seconds something is wrong.
*
The alternative to the fuse was to replace the 30+ year old wire.* The fuse cost 50 bucks, and took less then 5 minutes vs. the new battery cable/wire would have cost 1+ boat unit and several hours.* When your boat gets to be 30+ years old and there are only a couple of insurance companies that will insure, you may have a different view point.**
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Old 01-02-2012, 08:35 PM   #43
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RE: Battery Switch Location and Emergencies

When we acquired our Californian 34 we were absolutely clueless about power boat systems. Our first learning experience involving fire/electrical stuff came while working on the boat at the dock. While checking the fuel gauge reading on the port side the start up warning horn shorted & smoked, the port ignition switch caught fire, melted & shorted out, that led to the port engine starting on its own. In a word: chaos. Fortunately, the battery switches are located under the settee (start side O1A2) & under the galley sink(House On/Off). Killing the DC power put the fire out in the lower station panel. Diving into the engine room, turning off the fuel @ the tank & hitting the manual shutdown lever shut down the engine. Our wiring is similar to Flywright's. I'm glad the disconnect was easily available. We also spend a lot more time on checking connections & wire conditions.
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Old 01-03-2012, 04:41 AM   #44
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RE: Battery Switch Location and Emergencies

I'm glad the disconnect was easily available.

Nice , but most alternators will need new diodes if they are shut off while charging.

A fire would be worth a new alt, even tho it might not be part of the problem.
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Old 01-03-2012, 05:33 AM   #45
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Battery Switch Location and Emergencies

Quote:
Willy wrote:
Battery disconnects located*in the ER space can be a real PITA !

The engine room would indeed be a poor*location for battery disconnects.

You have to hope and expect that boat manufacturers would think of these things when they design the boats so owners wouldn't have to change things later.

*

BTW: I need electrical power to shut off my (diesel) engine.* I expect at least a few others are the same.
*



-- Edited by rwidman on Tuesday 3rd of January 2012 06:34:00 AM



-- Edited by rwidman on Tuesday 3rd of January 2012 06:40:17 AM


-- Edited by rwidman on Tuesday 3rd of January 2012 03:14:02 PM
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Old 01-03-2012, 12:04 PM   #46
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RE: Battery Switch Location and Emergencies

Could you rig a switch on the fuel solenoid. If there is one on your engine. All I need to do is disconnect mine. I have it rigged with a bayonett style wire attachment. When disconnected it shuts off the fuel supply.

SD
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Old 01-03-2012, 02:15 PM   #47
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RE: Battery Switch Location and Emergencies

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Could you rig a switch on the fuel solenoid. If there is one on your engine. All I need to do is disconnect mine. I have it rigged with a bayonett style wire attachment. When disconnected it shuts off the fuel supply.

SD

I beleieve the way mine is designed, the fuel supply is open unless the solenoid is engaged* It's a "kill" solenoid.

It's a Volvo TAMD 41P
*
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Old 01-04-2012, 04:33 AM   #48
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RE: Battery Switch Location and Emergencies

T handles and cable can be used to stop most non electronic injection diesels.

The instant reset allows the engine to start easily , shutting off the fuel can be a second problem.

Most folks do not have either the gear or a gravity day tank to make bleeding a snap.

Always best not to start a SNOWBALL of problems.
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Old 01-04-2012, 10:41 AM   #49
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RE: Battery Switch Location and Emergencies

Willy - good thought. The Blue Sea remotes I've seen are solenoid operated. I don't know the details of operation. But, using an electrically operated device to combat an electrical casualty seems a bit counter-intuitive. Maybe as others have commented, a sturdy knife switch with a mechanical, remote, operator would be simple and have merit. Anyone seen a setup like that or know where to buy one ? I've been through a bunch of on-line sources and not seen anything with the amp ratings discussed above, much less with a remote, mechanical, operator.
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Old 01-04-2012, 11:06 AM   #50
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RE: Battery Switch Location and Emergencies

I had an issue with a non-operating port shutdown solenoid. To get around the problem until I got back home, I ran a poly cord from the shutdown bellcrank to the forward ER door. When I needed to shut down, I just pulled the cord until the engine dies. The spring pressure was sufficient to return the bellcrank to the 'run' position. Yes, it was funky, but it got me home.

I have considered adding these to provide an emergency mechanical shutdown system. It's just way down on my list of gotta-haves.

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Old 01-04-2012, 11:18 AM   #51
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RE: Battery Switch Location and Emergencies

My problem turned out to be a bad wire to the solenoid, but I didn't find that until I replaced the solenoid and still had an intermittent problem. After replacing the wire, all is well and now I have a spare solenoid.
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Old 01-04-2012, 04:49 PM   #52
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Battery Switch Location and Emergencies

I haven't been able to determine exactly where my shut down solenoid is. I'm going to need someone at the switch and me in the bilge. With the engine off!

My backup plan is to block the air intake.

That cable looks like a good emergency shut down if there's a way to fit it.


-- Edited by rwidman on Wednesday 4th of January 2012 05:50:53 PM
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Old 01-04-2012, 06:48 PM   #53
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Battery Switch Location and Emergencies

FlyWright,

That is exactly the shut down method for my old Perkins6-354. Simple and reliable.

My battery shutdown is to the lower left of the lower helm.

Rob

37' Sedan


-- Edited by Datenight on Wednesday 4th of January 2012 07:50:05 PM
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Old 01-04-2012, 07:22 PM   #54
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RE: Battery Switch Location and Emergencies

Hey Bob,

Got pics of that Sung Yung Sedan? Would love to see what it looks like.
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Old 01-04-2012, 11:13 PM   #55
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RE: Battery Switch Location and Emergencies

Both my current and past boats have manual engine shutdowns, and I think they are a good idea.

You can also use for oil pre-lube by manually stopping the engine, and trying to start it.* Yeh, a little starter wear, but it only takes 10-15 seconds of starter work to*pre-lube.* OK if pre-lubing is an uncommon event.
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Old 01-05-2012, 05:01 AM   #56
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RE: Battery Switch Location and Emergencies

"Anyone seen a setup like that or know where to buy one ?"

Any bus junk yard will have what you need . Some are single pole , others double.

It takes a strong pull to disconnect so I fear the reset would have to be manual.
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Old 01-05-2012, 06:21 PM   #57
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RE: Battery Switch Location and Emergencies

Al,

I do have some nice pictures but have not been brave enough to go through the learning curve to post them. Looks like now is the time to get to work.

Rob

37' Sedan
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Old 01-05-2012, 08:01 PM   #58
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RE: Battery Switch Location and Emergencies

The easy way:

Click in the quick reply box below, then select the Advance Editor button.* check the Attach Image(s) box to open a cell of boxes allowing you to browse, click to choose and attach multiple pics.

*

The other way:

Upload your photos to a web hosting site like Photobucket, copy the [IMG] html code and paste it into the body of your post.

Now quit reading posts and get those pics posted!!
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Old 01-08-2012, 06:45 PM   #59
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RE: Battery Switch Location and Emergencies

O.K. FlyWright here goes. If this works, these are the shots from us anchored in Quissett Harbor, Falmouth Cape Cod this summer. The interior shots were at the same time.

Rob

37' Sedan
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Old 01-09-2012, 04:05 AM   #60
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RE: Battery Switch Location and Emergencies

Great. Now that wasn't so hard, was it..?
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