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Too big to fail
 
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"You go to the track with the Porsche you have, not the Porsche you wish you had."
'03 E46 M3
'57 356A
Various VWs
Old 07-20-2019, 01:35 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97041 (permalink)
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Quote:
Originally Posted by john70t View Post
WW 1 Trenches, Craters? The Somme?

Present day...?

Last edited by tcar; 07-20-2019 at 03:05 PM..
Old 07-20-2019, 03:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97042 (permalink)
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Location: Charleston, SC.
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^^^^...https://www.dailymail.co.uk/news/article-2457451/WWI-battlefield-photos-look-today.html
Old 07-20-2019, 04:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97043 (permalink)
Run smooth, run fast
 
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- John
"We had a band powerful enough to turn goat piss into gasoline."
Old 07-20-2019, 04:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97044 (permalink)
Make Bruins Great Again
 
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Quote:
Originally Posted by widebody911 View Post
he's not dead, he's just sleeping

random:

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Joe
See Porsche run. Run, Porsche, Run: `87 911 Carrera
Old 07-20-2019, 05:02 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97045 (permalink)
Get off my lawn!
 
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
Old 07-20-2019, 06:13 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97046 (permalink)
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20+ year PCA member

Many Cool Porsches, Projects& Parts, Vintage BMX bikes too
Old 07-20-2019, 06:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97047 (permalink)
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20+ year PCA member

Many Cool Porsches, Projects& Parts, Vintage BMX bikes too
Old 07-20-2019, 07:58 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97048 (permalink)
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20+ year PCA member

Many Cool Porsches, Projects& Parts, Vintage BMX bikes too
Old 07-20-2019, 08:02 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97049 (permalink)
Get off my lawn!
 
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Join Date: Nov 2007
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
Old 07-21-2019, 08:14 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97050 (permalink)
Too big to fail
 
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"You go to the track with the Porsche you have, not the Porsche you wish you had."
'03 E46 M3
'57 356A
Various VWs
Old 07-21-2019, 08:45 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97051 (permalink)
Get off my lawn!
 
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Some of the cheap smaller boats



Jim, is this like your sail boat?
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
Old 07-21-2019, 10:26 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97052 (permalink)
 
Too big to fail
 
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Join Date: Jan 2002
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"You go to the track with the Porsche you have, not the Porsche you wish you had."
'03 E46 M3
'57 356A
Various VWs
Old 07-21-2019, 12:22 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97053 (permalink)
Cars & Coffee Killer
 
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Some Porsches long ago...then a wankle...
5 liters of VVT fury now
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"There is freedom in risk, just as there is oppression in security."
Old 07-21-2019, 03:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97054 (permalink)
I see you
 
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Location: NJ
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Quote:
Originally Posted by widebody911 View Post
^why?

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Old 07-21-2019, 03:58 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97055 (permalink)
FUSHIGI
 
Join Date: Feb 2006
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https://en.wikipedia.org/wiki/Contra-rotating_propellers

Old 07-21-2019, 04:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97056 (permalink)
You do not have permissi
 
john70t's Avatar
 
Join Date: Aug 2001
Location: midwest
Posts: 39,870
Quote:
Originally Posted by flatbutt View Post
^why?
Simple answer (or probably WAG) from another layman:
Is that "stall" is the lack of airflow....due to low speed or turbulence....over both the airplane wings or props.

The blades can't grab air in a complete vacuum or very high altitudes.
When this happens everything becomes a rock.

With counter-rotating props the front blades act as sort of a turbo for the rear blades.
Instead of being enveloped in nothingness, they now work in a pre-pressurized envelope.

So regardless of conditions:
-slow and low -vs.- high and fast
-either the front set or the back set should be able to pull at full capacity...at the slight cost of inefficiency with the other set.

Last edited by john70t; 07-21-2019 at 05:54 PM..
Old 07-21-2019, 05:04 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97057 (permalink)
You do not have permissi
 
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Join Date: Aug 2001
Location: midwest
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forgot pic
Old 07-21-2019, 05:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97058 (permalink)
Registered
 
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Byron

20+ year PCA member

Many Cool Porsches, Projects& Parts, Vintage BMX bikes too
Old 07-21-2019, 05:12 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97059 (permalink)
Registered
 
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__________________
Byron

20+ year PCA member

Many Cool Porsches, Projects& Parts, Vintage BMX bikes too
Old 07-21-2019, 05:13 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    #97060 (permalink)
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