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Night flying in the mountians in a cessna 150,



 
 
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  #131  
Old March 1st 05, 06:57 PM
George Patterson
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Morgans wrote:

Have you ever considered home brewing a fire protectin system for your
house? A pipe on the roof with holes drilled in it to keep the shingles
wet. Directional irrigation sprinklers keeping the walls wet.


Real sprinkler heads will do a much better job and are not all that expensive.
For this type of system, you could use open heads. IIRC, each head typically
covers 150'sq.

A high
volume irrigation pump, I'm thinking gas, so power outages will not be a
problem. Pump out of the swimming pool. If you don't have a pool, now you
have an excuse to get one!


Two basic types of pumps are usually used for this sort of thing. A diaphram
pump (such as a "mud puppy") will maintain constant pressure. A piston pump
maintains constant volume. A properly sized piston pump would be best in an open
system.

I no longer remember the flow figures, but a swimming pool wouldn't last long
enough to handle a situation such as the brush fires California suffers.

I spent a year designing systems for Grinnell Fire Protection once.

George Patterson
I prefer Heaven for climate but Hell for company.
  #132  
Old March 3rd 05, 09:26 AM
Ric
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"MJC" wrote in message
...
A few years ago, good friend of mine, riding his Harley, was stopped
and
waiting at a red light on a Friday evening on his way home from work. I
imagine that while he was waiting for the light to change, he was probably
wondering what his wife might have cooked for dinner.
Seconds later, he was dead, hit by a drunk who never saw him or the red
light.
I've always ridden bikes (yup, a Harley), and I know the risks. And
it's
because I know the risks of both motorcycles and airplanes that I would
also
prefer the "risk" of flying over a mountain at night rather than sitting
still on a Harley at a red light on a weekend evening.


Your statement makes no sense, if you ride bikes and fly you risk both.

Ric


MJC

"NW_PILOT" wrote in message
...

"houstondan" wrote in message
oups.com...
very thought provoking thread for me. valuable stuff to consider
personal minimums. as someone who has been riding motorcycles for 40
years, i find it kinda tough to be critical of the decisions other
people make when the biggest killer of stupid old men is really big
motorcycles.



I ride bike's also, Every time I stop at a light I wait for the idiot
that
doesn't see me and is going to plow in to me, hearing someone's tires
skidding behind you is not a good sound or a good feeling. Being boxed in

on
the highway or while at a stop light on a bike by people that think its
funny is not a good feeling also. What about being tail gated while on a
bike. I will take flying a single over the mountains at night rather then
getting creamed by some loser that's not paying attention or wanting to

play
with people on motorcycles.






  #133  
Old March 3rd 05, 07:12 PM
Peter Duniho
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"Ric" wrote in message
u...
[...]
I've always ridden bikes (yup, a Harley), and I know the risks. And
it's
because I know the risks of both motorcycles and airplanes that I would
also
prefer the "risk" of flying over a mountain at night rather than sitting
still on a Harley at a red light on a weekend evening.


Your statement makes no sense, if you ride bikes and fly you risk both.


Presumably not at the same time though.

I'm a pilot, as well as a homeowner. That means I fly an airplane, and I
have to mow the lawn. I "risk" both, but I prefer flying.

So, why doesn't his statement make sense? Can't he prefer engaging in one
risky activity over another?

Pete


  #134  
Old March 3rd 05, 07:25 PM
Henry A. Spellman
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Actually, this is a well known phenomenon for 250 hp Comanches with
carburetors, and is one reason that the International Comanche Society
strongly suggests that anyone new to flying Comanches get a check out
from a CFI who really knows Comanches.

The pertinent parts of a proper checkout start with the engine start
procedu (1) Before start, electric fuel pump ON and listen to the
sound of the two electric fuel pumps. They should sound like a Latin
rhythm as the two pumps go into and out of phase. If the sound is a
regular beat, one of the pumps is not working. Naturally, you can only
hear the pumps when the engine is not running. (2) Then electric fuel
pump OFF for start, taxi, and runup. This tests the engine driven fuel
pump. (3) Electric fuel pump on just before power up for takeoff. (4)
Electric fuel pump OFF when a safe altitude is reached. Watch the
fuel pressure. If it falls below minimum, electric fuel pump back ON
for ten seconds, then OFF again. Repeat ON and OFF until fuel pressure
does not fall below minimum.

What the procedure does is push a little fuel into the engine driven
fuel pump with each on cycle, eventually breaking the vapor lock. I
have never needed more than three on's. There is no reason to scare the
passengers with a dead engine. The carb bowl has enough fuel in it to
give plenty of time to get the electric pump back on if you watch the
fuel pressure.

Keeping the electric fuel pump off until the last minute before
departure generally alleviates the problem entirely.

Hank
Henry A. Spellman
Comanche N5903P

wrote:
In rec.aviation.owning bk wrote:
: I experienced an engine failure in a single over the Sierras at night
: (the sunset was beautiful). It was in a Commanche, and the engined died
: about 3 seconds after turning off the electric boost pump (10,500'
: after leaving Tahoe.) Happily, the engine recovered as soon as the
: boost pump was turned back on. Also, happily, the owner of the
: Commanchee was in the right seat and is a pretty calm guy. He turned
: the pump off again (to see what the fuel pressure would do.) Sure
: enough, the pressure dropped, the engine faltered and the nose dropped.
: He flipped the pump back on, and I suggested leaving well enough alone
: (I'm not that calm.)

That's allegedly a common problem with PA-24's. The mechanical and
electrical(s) are in parallel. When the electric is on for awhile, no fuel goes
through the mechanical pump and it gets no cooling. When the electric is turned off,
the mechanical pump is vapor locked and can't pump. It can ruin your day if you do it
just after takeoff and don't think fast.

That's just what I've heard.

-Cory

************************************************** ***********************
* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
************************************************** ***********************


  #135  
Old March 4th 05, 12:44 PM
vk6ad
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How did "he and his two passengers" fit in a Cessna 150?

vk6ad
Perth Australia


  #136  
Old March 4th 05, 07:13 PM
Dylan Smith
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In article , Morgans wrote:
I saw something lately, saying that people's brains do not develop the part
that has to do with risk assessment, until after 25.


Perhaps I'm atypical. I'm *much* less risk averse now than when I was
18.

--
Dylan Smith, Castletown, Isle of Man
Flying: http://www.dylansmith.net
Frontier Elite Universe: http://www.alioth.net
"Maintain thine airspeed, lest the ground come up and smite thee"
 




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