Today's Message Index:
----------------------
1. 09:47 AM - Re: helmets (barryhancock)
2. 10:41 AM - Re: Helmets Why you need one (John Fischer)
3. 02:23 PM - CJ6 Compressor Valve (Okanogan Lew)
4. 04:54 PM - CJ6 prop (Chris Wise)
5. 06:37 PM - Re: CJ6 prop (Warren Hill)
6. 06:43 PM - Re: CJ6 prop (Walter Lannon)
Message 1
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I would just like to add that there have been several occasions where I have been
flying a CJ where turbulence alone has knocked my head into the canopy. I'm
glad I was wearing a helmet. In a CJ/Yak or other aircraft where there isn't
a lot of clearance between the canopy and the cranium, even a properly adjusted
5 point harness WILL NOT keep your head from impacting the canopy. I can
think of one time in particular when I hit clear air turbulence in my Lancair
Legacy (since sold [Crying or Very sad] )that the impact between the aforementioned
parts was so violent it made me see stars and scared me. I didn't have
a helmet on. I flew the remaining 20 minutes of the flight with my hand in a
fist on top of my head to prevent it from happening again.
I also find helmets useful to me in that when I put a helmet on it's a symbol of
"game time" and is a constant reminder that what I'm doing carries with it an
inherent amount of risk not found in most other aspects of my life.
Barry
--------
Barry Hancock
Worldwide Warbirds, Inc.
(877) 869-6458
www.worldwidewarbirds.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=362662#362662
Message 2
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| Subject: | Re: Helmets Why you need one |
Brian & Group,
I have been following the discussion on helmets, but have not had time
to sit down and respond until now.
Brian, why would you use seat belts in an aircraft?
If you do not crash, you should not need them!
But if you need them, it is probably to late to put them on.
The same for helmets.
But before choosing a helmet, there are several things that need to be
considered.
What type of flying are you going to be doing, what aircraft, ect.....
Helicopters use hard helmets, because they can not egress the aircraft
in flight, so they increase the chance of a hard impact.
Jet fighters use lighter weight helmets to ease neck strain, and offer
min protection from impact.
But then they will hopefully egress the aircraft before the big impact.
So ultimately you need to decide what is the greatest danger you face in
an accident.
If you will be leaving the aircraft in flight, min protection required
(HGU-55, HGU-68) should be fine.
If you will stay with the aircraft to the ground, then you would want a
hard helmet (HGU-33, SPH-5, Ect....).
If you are not worried about your head hitting anything in an emergency
then wear you Boise headset and if you need retention a leather helmet
to hold it in place.
However I do find it funny that you would not consider riding a
motorcycle without full protection, but do not believe it is necessary
in an aircraft.
I guess it will ultimately be a individual choice, based on perception
of danger and cost of providing the protection.
In the last 10 years, I have lost three friends in aircraft accidents
(Dan Levigina, T-33; Bob Gilford, Hunter; Wyatt Fuller, F-86).
In the same period, I do not know anyone who has been seriously injured
in a traffic collision (car or motorcycle).
However, I did investigate 3-5 traffic accidents a day, 3-4 days a week,
for 5 years (incl 10-15 fatal traffic collisions).
So my decision is to use a helmet, I have an HGU-55P for min protection
and an SPH-4 (upgraded to SPH-5 retention & ear cups) for more protection.
But then my decisions may be biased, since I have a military aviation
background (Helicopter flight test, & C-130 FE).
Laterrrrrrr
Avn-Tech
Army Life Support Technician (93P20Q2), (1991-1995, Airworthiness
Qualification Test Dir, Edwards AFB)
C-130E, Flight Engineer (2001-2005, incl 14 missions in Iraq & Afghanistan)
Traffic Collision Investigator (2005-2010)
PS, Yes I wear a helmet on my motorcycle also!
Although I am bad about wearing a seat belt on city streets.
On 1/6/2012 8:22 AM, Brian Lloyd wrote:
> On Fri, Jan 6, 2012 at 4:10 AM, Drew Blahnick <dblahnick@gmail.com
> <mailto:dblahnick@gmail.com>> wrote:
>
> As Brian knows, here is why we need a hard shell helmet; for hard
> lessons that when they
> Don't kill you, make you better...as long as your jelly is still
> in place.
>
> http://gallery.me.com/lacloudchaser/100382
>
>
> Ouch! Leathers and helmet are good. You'd never catch me on the bike
> without them. (Armor too.) I hope you didn't trash the fairing too
> much. I am in the process of rebuilding the fairing on my bike
> (Kawasaki Ninja) because a replacement fairing cost about half of what
> I paid for the bike!!!
>
>
> Brian, you know I had to go with that levity after our email!
>
>
> :-)
>
> Seriously, even a minor thrashing back and forth with the heads
> impacting potruding buttons, knobs, throttle quadrants, canopy
> rails, etc. during the proverbial "fiery cartwheel approach" would
> "seem" to favor a hard shell vs soft. But I suspect the scientific
> testing of the 55 tells another tale... And I can remember our
> ejection and parachute landing fall (PLF) training in flight
> school for the Tweety Bird & T38, a truck would pull us to 50 feet
> under canopy and we would release on our own recognizance;
> invariably over half the class would dork up the PLF desired
> impact sequence (feet, calf, thigh) for (feet, arse, back of head)
> - and then getting dragged in the wind looking for the
> riser-releases. We had helmets on, couldn't imagine wearing shoe
> leather on my dome for that? Maybe it's just a confidence inspirer...
>
>
> And I understand all that. We tend to use simple cause-and-effect
> single-variable analysis of these kinds of problems, e.g. if your head
> hits these bumpy things it will hurt your head and the helmet stops
> them from hurting your head so a helmet is good. That sort of analysis
> is useful but it doesn't tell the whole story. We have the issues of
> neck injury due to compression against the canopy during radical -G
> events. We have neck injury caused by additional mass on the head.
> They are easy to dismiss as, "Well, gee, the mass of the helmet isn't
> that much so how bad can it be?"
>
> Rick Volker's article is stellar. It is the kind of analysis I was
> looking for. It isn't simplistic and it addresses trade-offs. (Good on
> ya Rick!!!!)
>
> For me I started to question things as I prepared a car to run on the
> track. One of the things that really got me is how much better I could
> perform because of a proper seat in the car. The seat protects my head
> from lateral loads and reduces fatigue as well, making me a better AND
> safer driver. So when I was thinking about protecting myself in the
> aircraft I started thinking about whether it might make sense to
> approach it from a different angle, having the seat and/or something
> like a HANS device providing additional protection and whether that
> would be better than a helmet by itself. We also have the example of
> the air-bag. Now I am not saying that an air-bag is the answer in the
> cockpit but just that, if you start thinking outside the traditional
> box, you see other possibilities.
>
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> brian@lloyd.com <mailto:brian@lloyd.com>
> +1.767.617.1365 <tel:%2B1.767.617.1365> (Dominica)
> +1.916.877.5067 <tel:%2B1.916.877.5067> (USA)
>
> *
>
>
> *
Message 3
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| Subject: | CJ6 Compressor Valve |
Guys, I disassembled the air out banjo fitting on the compressor to clean the valve
& noticed that the required spring was missing. I got an overhaul kit from
Doug, installed the new spring & seals. Now, there is almost no air and "snot"
released when I open the "snot" valve after flying. Before, there was a
considerable amount ejected. I check all the fittings with soapy water and there
are no leaks. Air pressure in the plane is normal & everything works as before.
Any thoughts on why installing the spring would make a difference? Thanks.
Paul lewis
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=362679#362679
Message 4
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G'Day All,
I am looking for a new set of blades and hub for a Nanchang CJ6 with
associated paperwork to onsell.
If a second hand set with Hub, please advise hours to run (the more the
better)
Please advise prices.
Thanks and cheers,
Chris.
Message 5
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Hello Chris,
I have a J9 prop and hub for the Housai-6 engine with approximately 90
hours. I put the M-14P engine on my CJ and sold the Housai-6 engine.
Still have the prop and hub. I have the prop log.
Please contact me directly.
Warren Hill
N464TW
k7wx@earthlink.net
On Jan 7, 2012, at 5:48 PM, Chris Wise wrote:
> G=92Day All,
>
> I am looking for a new set of blades and hub for a Nanchang CJ6 with
associated paperwork to onsell.
>
> If a second hand set with Hub, please advise hours to run (the more
the better)
>
> Please advise prices.
>
>
>
> Thanks and cheers,
> Chris.
>
>
>
>
>
Message 6
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G'day Chris;
I have two available both with new blades. One with 18 hrs since OH in
Canadian prop. shop. Both have Can. logs.
Send your email address for more info.
Cheers;
Walt
----- Original Message -----
From: Chris Wise
To: yak-list@matronics.com
Sent: Saturday, January 07, 2012 4:48 PM
Subject: Yak-List: CJ6 prop
G'Day All,
I am looking for a new set of blades and hub for a Nanchang CJ6 with
associated paperwork to onsell.
If a second hand set with Hub, please advise hours to run (the more
the better)
Please advise prices.
Thanks and cheers,
Chris.
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