Stretching WW2 Designs

In article , Eunometic
writes
Presidente Alcazar wrote in message
...
On Wed, 25 Aug 2004 20:17:41 -0400, (Peter
Stickney) wrote:

Before the 2 stage Merlin appeared, The folks planning Brit War
Production were getting ready to close down Merlin production in favor
of its intended followons - the Sabre and the Vulture. (The Griffon
was another Rolls private venture) It's a good thig that didn't
happen.

Whatever do you mean? Surely the war would have ended a lot sooner
with fleets of Sabre-engined Lancasters darkening the skies and the
emergency runways at Manston and Woodbridge after multiple engine
failures?

Gavin Bailey


There was no problems in the sleeve valved Napier Sabre that hadn't
already been solved by Bristol in its succesfull sleave valve
radials. In fact the Napiers problems were solved with Bristols
help.

Napier did eventually accept Bristol assistance over the manufacture of
the sleeves (and the US milling machines that made it possible) - but
only after MAP told 'em to...

And the tendency for the Sabre's pistons to melt a bit was only overcome
by adding oil to the priming tank.

Apart from that - bloody good mill!

The Vulture was simply 'developed to death' to provide increasing
power for the over specification weight Manchester.

The same fate befell the Junkers Jumo 222 which underwent 2 bore and 1
stroke change to increase power to keep up with airframe size weight
increases. As a result the engine was pushed to a new limit just as
the last set of teething problems had barely adaquetly been solved.

Cheers,

Dave

--
Dave Eadsforth