Hi,
I'm adding domestic hot-water heating to my new engine and it calls for
the 5/8" hoses to go from the front of the engine down and around to the
back. Normally I'd use cable-ties to hold the hoses in place, but wouldn't
the engine get too hot for the plastic? Should I use wire? Are there
things made specifically for this?

I'm concerned the vibration of the engine will eventually wear through
the hoses...

Lloyd Sumpter
"Far Cove" Catalina 36: http://www.user.dccnet.com/lsumpter/engine/

Lloyd says:

Normally I'd use cable-ties to hold the hoses in place, but wouldn't
the engine get too hot for the plastic?

Use two metal hose-clamps, put through each other into a bent figure-8 kinda
thingy. Do NOT be tempted to use a hose clamp that is actuyally holding a hose
on, though ;-)

Steve

I recollect that nylon's melting point is above 400 degrees, so if you've
melted a nylon cable tie, a lot of bad things have already happened.
There are rubber-lined metal clamps that i'd prefer. Ancor makes 'em. They
have a larger contact surface with the clampee and are therefore less subject
to chafing.

Lloyd Sumpter wrote:

Hi,
I'm adding domestic hot-water heating to my new engine and it calls for
the 5/8" hoses to go from the front of the engine down and around to the
back. Normally I'd use cable-ties to hold the hoses in place, but wouldn't
the engine get too hot for the plastic? Should I use wire? Are there
things made specifically for this?

I'm concerned the vibration of the engine will eventually wear through
the hoses...

Lloyd Sumpter
"Far Cove" Catalina 36: http://www.user.dccnet.com/lsumpter/engine/

Cable ties should work fine. They are used similarly in automotive
applications. Normally, auto's have under the hood temps somewhere in the
high 100's to even low 200's. Assuming you have wet exhaust, you "under
hood" temps would be maybe 150. Remember, marine thermostats are usually
140-150 as opposed to 190 or so in some auto's and cars have very hot
exhaust systems that put a lot of heat under the hood. Plastic items like
cable ties should be good for at least 200 deg. F. If you are worried, use
some hefty ones, about 1/4" wide or more, this are very strong.

--
Ron White
Boat building web address is
www.concentric.net/~knotreel

The plastic won't melt but it will get brittle fairly quickly and then
be liabel to fail. What I think you should use for this is an adel
clamp from any supply house. Google is your freind

Hi,
I'm adding domestic hot-water heating to my new engine and it calls for
the 5/8" hoses to go from the front of the engine down and around to the
back. Normally I'd use cable-ties to hold the hoses in place, but wouldn't
the engine get too hot for the plastic? Should I use wire? Are there
things made specifically for this?

I'm concerned the vibration of the engine will eventually wear through
the hoses...

Lloyd Sumpter
"Far Cove" Catalina 36: http://www.user.dccnet.com/lsumpter/engine/

Extra large clamps padded with a slit piece of larger diameter hose or
pipe insulation? Auto engines often sport light weight metal brackets
set at odd places on misc engine bolts just to hold hoses and wires
firmly. You could use a hose clamp to hold the hose w/pad against the
flat side of a custom bracket.

Rufus


Lloyd Sumpter wrote:
Hi,
I'm adding domestic hot-water heating to my new engine and it calls for
the 5/8" hoses to go from the front of the engine down and around to the
back. Normally I'd use cable-ties to hold the hoses in place, but wouldn't
the engine get too hot for the plastic? Should I use wire? Are there
things made specifically for this?

I'm concerned the vibration of the engine will eventually wear through
the hoses...

Lloyd Sumpter
"Far Cove" Catalina 36: http://www.user.dccnet.com/lsumpter/engine/

In commercial applications, long hose lengths are never used. all runs are
made with metal tubing. A short length of hose (4") is used at both ends
with double hose clamps on each side of each hose.
Steve

"Lloyd Sumpter" wrote in message
news
Hi,
I'm adding domestic hot-water heating to my new engine and it calls for
the 5/8" hoses to go from the front of the engine down and around to the
back. Normally I'd use cable-ties to hold the hoses in place, but wouldn't
the engine get too hot for the plastic? Should I use wire? Are there
things made specifically for this?

I'm concerned the vibration of the engine will eventually wear through
the hoses...

Lloyd Sumpter
"Far Cove" Catalina 36: http://www.user.dccnet.com/lsumpter/engine/

Couple of points - watch out for air locks - be careful where you run
the hoses - the hoses should only rise from the engine connections to
the hot water tank connections - no down runs - this automatically
bleeds any air into the tank. Second - use whatever lengths of cheap
car heater hose (unslit 3/4 or 7/8 whatever is needed) as sacrificial
cover over the hose runs to protect from unseen vibration wearing the
pressured hot water hoses. A couple of cable ties will last forever,
unless screwing to a bulkhead is an option.


On Wed, 31 Mar 2004 10:43:00 -0800, "Lloyd Sumpter"
wrote:

Hi,
I'm adding domestic hot-water heating to my new engine and it calls for
the 5/8" hoses to go from the front of the engine down and around to the
back. Normally I'd use cable-ties to hold the hoses in place, but wouldn't
the engine get too hot for the plastic? Should I use wire? Are there
things made specifically for this?

I'm concerned the vibration of the engine will eventually wear through
the hoses...

Lloyd Sumpter
"Far Cove" Catalina 36: http://www.user.dccnet.com/lsumpter/engine/

Drew Dalgleish wrote:

The plastic won't melt but it will get brittle fairly quickly and then
be liabel to fail. What I think you should use for this is an adel
clamp from any supply house. Google is your freind

You might go to an auto salvage yard and purchase some rubber coated hose
guides from junked autos.

Don Dando


"Lloyd Sumpter" wrote in message
news
Hi,
I'm adding domestic hot-water heating to my new engine and it calls for
the 5/8" hoses to go from the front of the engine down and around to the
back. Normally I'd use cable-ties to hold the hoses in place, but wouldn't
the engine get too hot for the plastic? Should I use wire? Are there
things made specifically for this?

I'm concerned the vibration of the engine will eventually wear through
the hoses...

Lloyd Sumpter
"Far Cove" Catalina 36: http://www.user.dccnet.com/lsumpter/engine/