Try the Breeze hose clamp web site Jim.

Paul Lamar


Jim and Lucy wrote:

I look after about 25 diesel farm engines from 18 to 300 hourspower.
Some are lightly loaded and some spend most of their life at
100% power. Only the very newest have silicone hoses. All
the older rubber type hoses ALWAYS last 15 or 20 years unless there
was some type of mechanical damage. Lots of vibration and
bouncing around in all cases. In the past water was changed
when it looked dirty, now it is changed every 4 years.
Mineral rich well water
was always used until just recently. Distilled water
is used now to avoid radiator recores. All past engines
have made it to 8000 hours without rebuild. Often the machine
is wore out or outdated around this time when it is sold.
They  have good quality springy clamps that give
with expansion and contraction, some are just wire type
and others are expensive looking clamps with a spring
under the tightener which may help longevity. I am looking
for a smaller version of these clamps for my zodiac with standard
rubber gates hoses.

Jim Pollard
Merlin Ont

The silicone hose has other advantages. The drawback is it cost a dollar
in inch.

Paul Lamar

I ran into an engineer at OSH that works for Cummins I think.
He did not have a card on him but hopefully he will join
up as I gave him my card.

He told me the life limiting factor on a diesel engine is the cooling
system. When the antifreeze gets old it turns acidic.
When that happens black low cost automotive hose becomes part of a

battery

because of the conductive carbon in it. You can actually measure
the voltage with a digital voltmeter by putting one probe
on the hose and the other on the hose barb. The black hose
loses carbon to the mixture. This causes a reduction in strength
of the hose. The answer is silicone rubber hose and changing your
coolant once a year. This could be a factor in the two crashes
we have had due to cooling hose joint failures. In both cases the
people had been flying their rotary powered airplanes for several

years.

Paul Lamar

 
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