Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-16-2018, 08:43 AM   #1
Senior Member
 
City: Lutz
Country: USA
Join Date: Jan 2016
Posts: 446
Dont Blow this horn!!

While replacing the oil pressure sender and attendant gauges on my 1982 Marine Trader 34 DC with its original 120 Lehman I pushed the "Horn Button". WOW the horn did not blow- the gauges went crazy--and a little puff of smoke came from the new VDO oil pressure gauge. OH MY MY-- now Im in trouble! Could all be ruined??? So I went outside and removed the horn. Checked the wires coming from the horn and it was a 'dead short' coming from the horn s insides. Over time the interior had corroded together and when the horn button was pushed it sent positive 12 volt electricity to all the ground wires connected to the gauges... Further investigation revealed that neither it nor the engine gauges are protected by any fuse... MY My---- well it turned out that the the gauges -old and new are ok. The horn was thrown away-the engine gauges fused. One NEVER KNOWS on these boaty's.
__________________
Advertisement

geoleo is offline   Reply With Quote
Old 12-16-2018, 09:25 AM   #2
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 20,011
I exercise my horn and electronic one regularly for that very reason.

In fact.... every boat system.


Always mount them with a little or more downward tilt.
__________________

psneeld is online now   Reply With Quote
Old 12-16-2018, 09:59 AM   #3
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 3,487
Quote:
Originally Posted by psneeld View Post

Always mount them with a little or more downward tilt.
Mine is also under the "brow" making it somewhat protected.
__________________
Jay Leonard
Attitude Adjustment
40 Albin
Mystic,Ct. /New Port Richey,Fl
jleonard is offline   Reply With Quote
Old 12-16-2018, 10:02 AM   #4
Senior Member
 
Moby Nick's Avatar
 
City: Rockford, IL
Country: USA
Vessel Name: Du NORD
Vessel Model: Albin-25
Join Date: Jan 2014
Posts: 284
I removed our dysfunctional 42 yr-old electric horn and now use a "canned air" horn. Who needs the agravation.

None of our Albin's nav lights worked, either, when we bought the boat, so I outfitted with detachable battery-powered lights for the first season of so. (we don't run at night; maybe twilight, occasionally). One by one, I have been able to get all of the original lights working, wired through a new circuit breaker board instead of fuses.
Moby Nick is offline   Reply With Quote
Old 12-16-2018, 10:46 AM   #5
Guru
 
Comodave's Avatar
 
City: Au Gres, MI
Country: US
Vessel Name: Never Say Never
Vessel Model: President 41 DC
Join Date: Jul 2015
Posts: 5,781
A friend had one of the canned air horns on his flybridge. It exploded and threw schrapnel through his bimini in multiple places. The mahogany drink holder that the horn was sitting in was disintegrated. The good news is that his insurance company paid for a completely new flybridge enclosure. If you have one of the canned horns, I would check them frequently for any rust. He didn’t know how old his horn was because it was on the boat when he bought it. Fortunately no one was on the boat when it exploded.
Comodave is offline   Reply With Quote
Old 12-16-2018, 10:53 AM   #6
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 20,011
First.... canned horns.... I have NEVER heard of one exploding...though not the first for a pressurized vessel...leaking yes, exploding with shrapnel no.


Lets not let a one in a million or more incident cause general alarm in the community.


I love auto horns or electronic ones over manual ones..but I also have both and have had both for 50+ years with no shrapnel or blowing circuits...along with the hundreds of other boaters I know.


Lets get a grip on what is common...not the extreme.
psneeld is online now   Reply With Quote
Old 12-16-2018, 11:06 AM   #7
Senior Member
 
Solly's Avatar
 
City: Solomons MD.
Country: USA
Vessel Name: Sun Runner
Vessel Model: 1985 Mainship 34 Trawler MK III
Join Date: Mar 2018
Posts: 117
Murphy LOVES to go boating !


I guess I fall into the "not if, but when " will something go wrong...…..

Exploding horn cans are now on the list....
Solly is offline   Reply With Quote
Old 12-16-2018, 11:11 AM   #8
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 20,011
Murphy is barely a guest on a well maintained and operated vessel...


You probably have a greater chance of dying from a health problems, car accident, meteor strike, lightening hits, etc...etc...than from an exploding air horn can.
psneeld is online now   Reply With Quote
Old 12-16-2018, 12:18 PM   #9
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 3,487
Quote:
Originally Posted by psneeld View Post
First.... canned horns.... I have NEVER heard of one exploding...
That's why I no longer say "now I've seen everything".
__________________
Jay Leonard
Attitude Adjustment
40 Albin
Mystic,Ct. /New Port Richey,Fl
jleonard is offline   Reply With Quote
Old 12-16-2018, 01:08 PM   #10
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 20,011
I am sure its possible.... BUT.....


....even with the hundreds of pressurized vessels I have seen or heard of that develop leaks, explosions producing shrapnel to destroy an enclosure....the military could only ask for grenades that reliable...
psneeld is online now   Reply With Quote
Old 12-16-2018, 01:51 PM   #11
Senior Member
 
City: Lutz
Country: USA
Join Date: Jan 2016
Posts: 446
Quote:
Originally Posted by psneeld View Post
Murphy is barely a guest on a well maintained and operated vessel...


You probably have a greater chance of dying from a health problems, car accident, meteor strike, lightening hits, etc...etc...than from an exploding air horn can.
Maybe don't buy the $7 ones at Walmart...………...
geoleo is offline   Reply With Quote
Old 12-16-2018, 01:56 PM   #12
Senior Member
 
City: Lutz
Country: USA
Join Date: Jan 2016
Posts: 446
Quote:
Originally Posted by psneeld View Post
First.... canned horns.... I have NEVER heard of one exploding...though not the first for a pressurized vessel...leaking yes, exploding with shrapnel no.


Lets not let a one in a million or more incident cause general alarm in the community.


I love auto horns or electronic ones over manual ones..but I also have both and have had both for 50+ years with no shrapnel or blowing circuits...along with the hundreds of other boaters I know.


Lets get a grip on what is common...not the extreme.
----- Im sure the air horn did not deteriorate from rain water - it was under a eave and mounted downward---it deteriorated into a dead short from docking in salt air next to the ocean for 36 years. Similar to past vent hull fittings that had copper screens and the screens welded themselves shut tight over time in salt air.
geoleo is offline   Reply With Quote
Old 12-16-2018, 02:04 PM   #13
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 20,011
I was thinking spray not rainwater...


but sure they don't last forever....but they work longer and give indicators of failure if tested regularly....that's all I was trying to point out.
psneeld is online now   Reply With Quote
Old 12-16-2018, 04:05 PM   #14
Guru
 
Alaskan Sea-Duction's Avatar
 
City: Inside Passage Summer/Columbia River Winter
Country: USA
Vessel Name: Alaskan Sea-Duction
Vessel Model: 1988 M/Y Camargue YachtFisher
Join Date: Jul 2012
Posts: 4,811
Yep trash the horns and install these....

https://www.airhornsoftexas.com/coll...FUqUfgod63wC_g
Alaskan Sea-Duction is offline   Reply With Quote
Old 12-16-2018, 09:53 PM   #15
Guru
 
Comodave's Avatar
 
City: Au Gres, MI
Country: US
Vessel Name: Never Say Never
Vessel Model: President 41 DC
Join Date: Jul 2015
Posts: 5,781
Just because someone has NEVER heard of a pressurized can exploding does not mean it can’t happen. I helped him clean up the metal pieces all over the flybridge and sewed a temporary repair to the bimini top. Apparently the insurance company didn’t have a problem believing it because they paid out $6800 for a new enclosure. BTW, I never said or intimated that you should not use a pressurized can air horn, just periodically check them for rust or deterioration. I also had never heard of one exploding but now I have...
Comodave is offline   Reply With Quote
Old 12-16-2018, 09:58 PM   #16
Senior Member
 
City: Lutz
Country: USA
Join Date: Jan 2016
Posts: 446
Quote:
Originally Posted by psneeld View Post
I exercise my horn and electronic one regularly for that very reason.

In fact.... every boat system.


Always mount them with a little or more downward tilt.
That's what I was doing 'exercising it' It "exercised" all right. LOL
geoleo is offline   Reply With Quote
Old 12-17-2018, 05:03 AM   #17
Master and Commander
 
markpierce's Avatar
 
City: Vallejo CA
Country: USA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 11,420
Can't imagine using a canned air horn every two minutes for an extended period. ... Believe in exercising a boat's systems. For instance, if tides don't require a long toot while exiting/entering the marina due to limited visibility over the breakwater, I blow the horn in the strait to hear the echoes.
__________________
Kar-KEEN-ez Koot
markpierce is offline   Reply With Quote
Old 12-17-2018, 07:26 AM   #18
Guru
 
High Wire's Avatar
 
City: Cape May, NJ and Englewood, FL
Country: USA
Vessel Name: Irish Lady
Join Date: Dec 2007
Posts: 2,810
Quote:
Originally Posted by Alaskan Sea-Duction View Post
Yep trash the horns and install these....

https://www.airhornsoftexas.com/coll...FUqUfgod63wC_g
Just right for my Chevy Tracker.
High Wire is online now   Reply With Quote
Old 12-17-2018, 07:40 AM   #19
Guru
 
O C Diver's Avatar
 
City: Fort Myers, FL... Summers in Crisfield, MD
Country: USA
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 7,617
I have a pneumatic air horn driven by a very small scuba tank with a safety burst disk. The tank is inspected annually. The engine gauges and engine are the only things attached to the engine battery system. Everything else is on the house battery bank with its own separate alternator on the engine. Everything is fused properly.

One has to wonder why the horn fuse didn't blow instantly with the dead short. Maybe no fuse or too high an amperage?

Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
O C Diver is offline   Reply With Quote
Old 12-21-2018, 02:21 PM   #20
Senior Member
 
BrianSmith's Avatar
 
City: Wherever Smartini is
Country: USA
Vessel Name: Smartini
Vessel Model: 2002 Kristen 52' Flybridge Trawler
Join Date: Mar 2014
Posts: 356
Quote:
Originally Posted by psneeld View Post
Murphy is barely a guest on a well maintained and operated vessel...
We must know a different Mr. Murphy. :-)
__________________

BrianSmith is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 11:20 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×