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  Topic: Unlimited racing - a new direction?
hfriedman

Replies: 13
Views: 28102

PostForum: Air Racing - General   Posted: Sun Aug 13, 2006 08:16   Subject: Unlimited racing - a new direction?
Thanks for a really great posting. It deservess to be preserved in some more perminant form.
  Topic: BMW IIIa
hfriedman

Replies: 3
Views: 10150

PostForum: DB, Junkers, Other German Engines   Posted: Tue Mar 28, 2006 17:37   Subject: BMW IIIa
Here are the particulars of the BMW IIIa six cylinder in line water cooled engine: Figures are in American units unless otherwise indicted.:


PARTICULARS OF THE B.M.W. ENGINES.

TYPE OF MOTOR ...
  Topic: Lousy Lycomings!
hfriedman

Replies: 9
Views: 15100

PostForum: Recip Engines 1920=>   Posted: Wed Mar 15, 2006 18:38   Subject: Lousy Lycomings!
"A while ago I was speaking to a pilot who has some 4-cylinder Cessna thing, I changed the subject once he told me that ALL piston engined aircraft are air-cooled. I don't think people like that would ...
  Topic: BMW IIIa
hfriedman

Replies: 3
Views: 10150

PostForum: DB, Junkers, Other German Engines   Posted: Wed Feb 15, 2006 18:32   Subject: BMW IIIa
Thanks for the information. I will give it a try.
  Topic: BMW IIIa
hfriedman

Replies: 3
Views: 10150

PostForum: DB, Junkers, Other German Engines   Posted: Sun Feb 12, 2006 18:32   Subject: BMW IIIa
NACA Report 135 on this engine cites Report 1350 of the US Army Air Service Engineering Division. Does anyone know whther that is a different report and, if so, how to get acces to it? I am also in ...
  Topic: Detonation and Preignition with BMWIIIa Engines
hfriedman

Replies: 2
Views: 7944

PostForum: DB, Junkers, Other German Engines   Posted: Tue Nov 22, 2005 18:28   Subject: Detonation and Preignition with BMWIIIa Engines
Thanks Wallan. We had not seen it before. It must have been an extremely efficient engine. It held the world endurance record for awhile and the LJ-6 was touted for its range.
  Topic: Detonation and Preignition with BMWIIIa Engines
hfriedman

Replies: 2
Views: 7944

PostForum: DB, Junkers, Other German Engines   Posted: Mon Nov 21, 2005 18:41   Subject: Detonation and Preignition with BMWIIIa Engines
We are looking at a series of accidents involving Junker F-134/LJ-6 airplanes with BMW IIIa engines.* The power is given at 185 hp so these may have been derated from their WW I form. At least som ...
  Topic: liquid vs air cooling
hfriedman

Replies: 12
Views: 11138

PostForum: Technical Discussion   Posted: Sun Nov 06, 2005 19:37   Subject: liquid vs air cooling
jrussell writes "As far as civil aircraft, I will agree unequivocaly" that liquid cooled engines were superior. Once good radial engines became available (1925-27 in the US and considerably earlier i ...
  Topic: great engine reference book
hfriedman

Replies: 6
Views: 8253

PostForum: Book, Mags, Films, Recordings, Reference   Posted: Sat Oct 08, 2005 05:53   Subject: great engine reference book
Thanks for the information. Somehow the picture of the average dilution worker curling up with a 500 page book doesn't quite fit. Still there must have been a large number of supervisors and middle ...
  Topic: great engine reference book
hfriedman

Replies: 6
Views: 8253

PostForum: Book, Mags, Films, Recordings, Reference   Posted: Tue Oct 04, 2005 13:42   Subject: great engine reference book
There is a new reprint out: Beaumont, R.A.: Aeronautical Engineering: A Practical Guide for Everyone Connected with the Aircraft Industry.

Can anyone give a quick evaluation?
  Topic: Restricted Throttles on R-1830s
hfriedman

Replies: 1
Views: 6642

PostForum: Pratt & Whitney Engines   Posted: Tue Jul 19, 2005 17:34   Subject: Restricted Throttles on R-1830s
As the story goes: In the spring of 1941 Lieutenant Commander John S. Thach, skipper of Fighting Three learned that his likely adversary would be the Mitsubishi A6M “Zero” that outperformed the N ...
  Topic: Turbocharging vs. mech stage + exhaust thrust
hfriedman

Replies: 13
Views: 12126

PostForum: Technical Discussion   Posted: Sun Jun 05, 2005 17:20   Subject: Turbocharging vs. mech stage + exhaust thrust
One of the more notorious (not necessarily truthful) scandals of World War II aviation is the tale of the aborted re-engining of P-38s with Merlins. The story is that after the spectacular success o ...
  Topic: Cooling load R-2800 vs. Bristol Centaurus
hfriedman

Replies: 3
Views: 5419

PostForum: Technical Discussion   Posted: Tue May 17, 2005 17:41   Subject: Cooling load R-2800 vs. Bristol Centaurus
Were max CHTs set to protect the valves and perhaps other parts from the direct effects of heat or were they set primarily to avoid detonation and pre-ignition?
  Topic: Tom Rutledge and Wright Aeronautical
hfriedman

Replies: 6
Views: 13413

PostForum: Wright Engines   Posted: Wed Mar 09, 2005 18:34   Subject: Tom Rutledge and Wright Aeronautical
I suppose that you have long since thought of this but The Rutledge Family web page is:
http://www.rootsweb.com/~rutledge/
The email address given for the webmaster is usrutledge@attbi.com
Perhap ...
  Topic: Tom Rutledge and Wright Aeronautical
hfriedman

Replies: 6
Views: 13413

PostForum: Wright Engines   Posted: Tue Mar 08, 2005 17:20   Subject: Tom Rutledge and Wright Aeronautical
The logic sounds right but does it take a bit of the gloss off the Rutledge legend as recited on the web:

"On May 31, 1927, Charles Lindbergh wrote a new chapter in aviation history by completing t ...
 
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