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13-06-2010, 01:04
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#1
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Registered User
Join Date: May 2007
Location: Hawaii
Boat: Cross 38 Trimaran
Posts: 124
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Hose Clamps
Thought I might pass this along. I pushed the raw water inlet hose on my diesels pump inlet and was quite surprised when the clamp just broke in two. I had this particular hose clamp off a couple of months ago when I changed the pump impeller and it looked fine. Needless to say I am changing all my hose clamps. These clamps have only been in service a couple of years. Any suggestions as to the in use life of hose clamps?
This could have been a disaster if I had been entering or leaving my marina. It has a narrow entrance with breaking waves on either side. Not the place to have engine problems.
Red Horse
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13-06-2010, 03:25
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#2
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 47,907
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Hose Clamps should be:
For longevity:
- all 316 Stainless Steel or Titanium, including threaded worm bolt.
For Performance:
- smooth, pressed not perforated band body.
- rounded/rolled edges.
AWAB & ABA & Titan*make such clamps.
Titan Marine clamps are perforated.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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13-06-2010, 04:27
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#3
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Registered User
Join Date: Jun 2007
Posts: 853
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To add to Gord's info , a magnet when buying S/S clamps may reveal that the worm gear is not good stainless.
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13-06-2010, 05:14
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#4
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Registered User
Join Date: Apr 2008
Location: Massachusetts
Boat: Morgan OI 30' Itinerant
Posts: 254
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Use two!
Glad you 'caught' it. Thats why its good to always have two clamps on each connection.
__________________
A man who is not afraid of the sea will soon be drowned, he said, for he will be going out on a day he shouldn't. But we do be afraid of the sea, and we only be drowned now and again.
J.M.Synge, in The Aran Islands
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13-06-2010, 05:51
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#5
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Long Range Cruiser
Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,823
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When we bought this boat and needed to zip the 10,000 N miles from the Caribbean back to australia we didn't have much money so the only spare hose clamps we could afford were normal galvanized one, or some cheap SS with steal screws.
We didn't need them and they are in a bag for emergency use.
There is such a vareity of hose clamps needed that I don't mind cheapies for an emergency supply.
Mark
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13-06-2010, 05:58
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#6
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Long Range Cruiser
Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,823
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I'm not intending on hijacking this thread, but its kinds the same subject.
We had some water coming into the bilges intermittently and I was stuffed if I could find the reason. (I think it turned out to be the shaft seal and greased it. I didn't know it had to be done.)
My question is: If you notice an intermittent puddle would you run round tightening all the hose clamps? Or would you leave them all as is till you definitely confirm which hose clamp is the culprit?
Mark
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13-06-2010, 08:51
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#7
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Registered User
Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,131
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There is such a vareity of hose clamps needed that I don't mind cheapies for an emergency supply.
Mark[/QUOTE]
With you on that one Mark.
At every hull inlet on Bluestocking I have a tapered wooden plug, and on its tag line I have a correct size spare clamp. Any on-engine hoses are double clamped as a matter of course for my insurance company.
__________________
so many projects--so little time !! 
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13-06-2010, 09:03
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#8
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Long Range Cruiser
Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,823
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Quote:
Originally Posted by Blue Stocking
, and on its tag line I have a correct size spare clamp. .
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Thats a great idea!!!
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13-06-2010, 09:09
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#9
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Registered User
Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,961
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__________________
"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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13-06-2010, 09:38
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#10
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 47,907
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Hose clamps should not be over-tightened; just tight enough to distort (compress) the hose some, but not tight enough to cut into it or strip the worm gear.
To prevent loosening, apply a little Blue Loctite (#242) on the worm gear.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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