Re: bit OT - gas turbines on e-Bay.

On Sat, 24 Sep 2005 19:44:46 +0100, "Kim Siddorn"
<kim.siddorn@xxxxxxxxxxxxxxxx> wrote:

>http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=5618783319
>
>AND better still!
>
>http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=5618782252
>
>Any ideas what they are gentlemen?


First one's a R-R Spey. I think it's a Spey Junior , aka the RB183 (a
pair powered the Fokker F-28) because it looks like the short 4-stage LP
compressor housing, not the longer 5-stage.

Most Speys were military, with afterburners (RN Phantom most famously),
but this is far too short. The full-size Spey also had a gearbox that
came right to the front of the compressor face as it was intended for
fitting into a fuselage. The Spey Junior was intended for pod mounting
so the gearbox moved backwards, to keep the frontal area small around
the leading edge.

The second one is a _very_ early Avon. It's an AJ65 by the separate
combustors but this one doesn't have the Avon's usual prominent blow off
valve (the big rectangular casing on the upper part of the compressor).
This makes it pre 1952 and I think it's a first series RA3 of 1950.


They seem expensive, given that they're non-runners and the Avon is even
missing the cartridge starter and inlet bullet.
.