[Fot] Header primary lengths

[Marx Christian tr4-racing]

I found in a book:
Engine DB 601 V 12
44,5 L
3500 HP
3100 rpm
Compressor charged  with 30 PSI

----- Original Message -----
From: "Richard Taylor" <tarch at bellsouth.net>
To: "'Bill Babcock'" <BillB at bnj.com>; "'Michael Porter'"
<portermd at zianet.com>; "'Terry Stetler'" <tlizzard at msn.com>
Cc: "'SHANE Ingate'" <hottr6 at hotmail.com>; <fot at autox.team.net>
Sent: Monday, January 08, 2007 3:51 PM
Subject: Re: [Fot] Header primary lengths


> Maybe this is a numbers game about "most". But for sure the Boeing B-17s,
> B-29s, Consolidated B-24s and a number of other bombers were all
> turbo-supercharged radials with, of necessity, exhaust manifolds. The
> Lockheed P-38 is the only fighter I know of to be TSC'd. Many of the
> American fighters used Allison or Merlin supercharged (only) V-12s w/short
> stacks, (all angled aft). The same is true for the Bf-109 except w/an
> inverted Daimler Benz motor.
>
> The Fw.190 used a radial engine with a pressure cowl which required, like
> many (if not most) other fast radials, a collective exhaust manifold.
>
> But "the most" tips in your favor with the Mitsubishi A6M Zero. Although
the
> later models had collective manifolds, more than 10,000 were built with
> short stacks, (all angled aft).
>
> So endith the lesson in trivia.
>
> Richard
>
> Never let anyone drive you crazy unless you enjoy the drive.
>
>
>
> Michael wrote:
> And, further, most aircraft engines, at least the WWII variety, had short
> pipes because of weight (a primary concern for aircraft), and not for
> additional thrust, as some commenters have previously mentioned. If thrust
> were a consideration, the pipes would be angled directly rearward, not
down,
> or in all directions, as with radials.
>
>
> Cheers.
>
>
> --
> Michael D. Porter
> Roswell, NM
>
> Never let anyone drive you crazy when you know it's within walking
> distance....
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