[ARC5] zero

[Scott Johnson]

The BMW 601 used in the FW-190 was a licensed semi-copy of the Wright
R-2600, the Sakae was also built on a pre-war licensing arrangement with
Pratt, as was the propeller (Hamilton-Standard Hydra-Matic)

Scott W7SVJ

-----Original Message-----
From: arc5-bounces at mailman.qth.net [mailto:arc5-bounces at mailman.qth.net] On
Behalf Of Francesco Ledda
Sent: Friday, August 17, 2012 10:35 AM
To: Bruce Long
Cc: Arc5 at mailman.qth.net
Subject: Re: [ARC5] zero

Huawei was banned from selling routers in the US after losing a lawsuit with
Cisco for IP infringement. I worked for Northern Telecom and Huawei had two
products the 1600 and 3500 that looked like carbon copies of the LH1600 and
OM3500. I have never understood why legal actions were never taken.

Sent from my iPad

On Aug 17, 2012, at 9:25 AM, Bruce Long <coolbrucelong at yahoo.com> wrote:

> sakae engine copy of Pratt Whitney
> 
> Does not surprise me.  I had read about a US designed and manufactured  
> late 1920's perhaps 1930s locomotive steam engine that was purchased by
the Japanese and then copied.  There was some sort of design flaw or
manufacturing flaw that required the boiler on that particular engine to be
cut lengthwise in half, the flaw repaired and the boiler welded back
together.  The Japanese copy faithfully copied that cut and weld.  I believe
I read of a japanese copy of the venerable National HRO5 receiver as well
with similar "attention to detail".
> 
> With respect to the Zero I see and hear flying here in central
Pennsylvania it might well have a Pratt-Whitney engine in it for all I know.
> 
> There is also a Mitchel B25 bomber flying in the mid-state area and it
also makes the forth of july flyby.  This has a distinctive sound as well--
a drop what you are doing and pick up the kids and run to the back yard to
see what is going on- distinctive sound.  But somehow to my ear that sound
lacks the threating snarl that I associate with the mid-state zero.
> 
> 
> While we are talking about technology copies about 15 years ago at the
bringing of the internet boom I was designing precision quartz crystal
oscillators.  A large portion of the oscillators went into Cisco routers.
> 
> One day we received a request for quote for an absolutely huge quantity of
precision oscillators from Wai-Wa  the multi-billion dollar electronics
company "owned" by the government of the Peoples Republic of China.  The
mechanical drawing of the oscillator design we where supposed to bid on was
a poor photocopy apparently of a fax of a Cisco internal drawing with the
Cisco sign off table at the bottom right side of the drawing and the bold
letter marking "Cisco Propitiatory" still intact.  They had not even
bothered to white that stuff out.
> 
> At present I am working at a small technology start up.  Our office
computer system is reguarly snooped from a small number of IP address we
have been able to trace back to Bejing and we have had PR Chinese Nationals,
mostly students at the local business school contact us on various premises
to arrange a visit.
> 
> 
> 
> 
> ________________________________
> From: Kenneth G. Gordon <kgordon2006 at frontier.com>
> To: Bruce Long <coolbrucelong at yahoo.com>
> Cc: Arc5 at mailman.qth.net
> Sent: Friday, August 17, 2012 8:35 AM
> Subject: Re: [ARC5] zero
> 
> On 16 Aug 2012 at 7:27, Bruce Long wrote:
> 
>> The sound of the engine is
>> both unique and manificent but I must admit every time I hear it- 
>> even before I knew there was a Zero in the region- it sends a tremor 
>> of fear up my spine.  It just sounds dangerous and threatening.  
>> Maybe I watched too many WW2 propaganda films as a boy.
> 
> Hee hee! Possibly, that last is correct. :-)
> 
> However, the Zero's original engine, the Sakae 12, 14 cylinder two-row 
> radial, was an almost exact copy of the very similar Pratt and Whitney 
> engine of the same design. Recently, on a Zero that was being 
> restored, there was discovered the exact same plaque that P&W put on 
> each of their engines, "Performance with Reliability" in English!
> 
> Ken W7EKB
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