Today's Message Index:
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1. 12:17 AM - Re: Control Cables (John W. Hart)
2. 05:38 PM - Oxygen...when & why (Dan Billingsley)
Message 1
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I don't know which kind comes with the kit, but, I'd go with the 7x19 SS.
It's a little more flexible than the others, and won't rust. Galvanized is
acceptable. However, if you operate off water, in a very humid climate, or
near salt water, galvanized will eventually start to rust. It may take a
few years for it to start, but it will happen. It usually isn't a problem
in very dry climates.
John Hart
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Dan Billingsley
Sent: Saturday, August 04, 2007 7:55 PM
To: kitfox-list
Subject: Kitfox-List: Control Cables
I've decided to replace my rudder control cables as they came with the kit
already nicopressed from the previous owner. Since I didn't do them and my
life is litterally in the balance of (were they done correctly or not?) ...I
can't move forward and cover the fuselage until I do this. That being
said...
As I look at AC Spruce I see three options of cable type (7x7, 7x19,&
1x19) and then a choice of Galvinized or SS. The diameter of my existing
cable is 3/32 and I am leaning towards the 7x19 SS. Does anyone know which
one comes with the kit and have any good reasons why I should choose
different?
Always best to learn from those who have gone before :>)
Dan B
Mesa, AZ
KF-IV , 912S 314DW
Message 2
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| Subject: | Oxygen...when & why |
I monitor an RV site and a discussion about using O2 came up. I thought this reply
was worth passing along.
Dan B. Mesa, AZ
KF-IV , 912s,
Mike and all,
It's been a while since I studied this in school but I'll give it a try:
The air we breathe is composed of oxygen, nitrogen and other gases. The
total weight of these gases equals the atmosheric pressure which of
course decreases with altitude. The one which we are concerned with is
the partial pressure of oxygen. When we take a breath at sea level the
oxygen pressure is greater than the oxygen pressure in the capillary
beds of the lung. So oxygen is pushed across the membranes of the air
sacs of the lungs into the capillary beds and under normal circumstances
the oximetry reading is about 98%. Then as altitude increases the
partial pressure of oxygen decreases, therefore it's ability to cross
the membranes decreases as well and the oximetry reading decreases.
Normal air has 21% oxygen. By breathing nearly 100% oxygen helps us to
keep our oximetry reading closer to the normal range. Your ability to
absorb oxygen is dependent on your general health, age, smoking and
other factors.
Last year my wife and I attended a seminar at Oshkosh given by a doctor
on the benefits of using oxygen. He recommends using oxygen, as I
recall, over the age of 55 at altitudes of 8000' and higher. And using
oxygen at any altitude at night to improve vision.
Hope this helps. Any questions would require some research.
Jim Paynter
RV-9A, KCCB
Cardiac Sonographer
San Antonio Community Hospital, Upland
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