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  Topic: RRHT collection
dbirch

Replies: 0
Views: 2716

PostForum: Collections/Restorations - General   Posted: Sat Dec 14, 2013 09:49   Subject: RRHT collection
If any member wishes to visit the Rolls-Royce Heritage Trust collection at Derby when they are in the UK, please let me know and I will book the visit for you. I would need a date.

Apart from aero- ...
  Topic: rr merlin spark plugs.
dbirch

Replies: 2
Views: 4894

PostForum: Rolls-Royce Engines   Posted: Wed Jul 25, 2012 07:32   Subject: rr merlin spark plugs
The sparking-plug mainly used in the Merlin during the war was the Lodge R725/5 or 962 (Air Ministry number RS.5), or the KLG RC62 (Air Ministry number RC.5). Variations had a slash number after the 5 ...
  Topic: Message from Scotland: I don't know what to say.
dbirch

Replies: 7
Views: 10843

PostForum: Non-Technical Discussion   Posted: Sun Oct 23, 2011 03:40   Subject: Message from Scotland: I don't know what to say.
Correction to my message.

The Whittle W1X is on display at the NASM in Washington DC.

Dave Birch
  Topic: Rolls Royce Avon Information Wanted
dbirch

Replies: 1
Views: 5476

PostForum: Gas Turbines   Posted: Thu Sep 08, 2011 12:06   Subject: caravelle Avon engines
The early Caravelle Avons were from the RA.28 family, same as installed in the Hunter 6 onward - Mks 203 and 207, and in the Valiant bomber, Mks 204 and 205. There was no Avon Mk.10.

The RA.28 in t ...
  Topic: Message from Scotland: I don't know what to say.
dbirch

Replies: 7
Views: 10843

PostForum: Non-Technical Discussion   Posted: Thu Sep 08, 2011 11:19   Subject: Early Whittle engine
Just picking up on this old thread; Whittle's first and second engines no longer exist, and as far as I am aware none of von Ohain's original engines exist either. That makes the Whittle W1X on displa ...
  Topic: WW1 engine serials
dbirch

Replies: 1
Views: 4843

PostForum: WWI Engines   Posted: Tue Sep 06, 2011 08:34   Subject: WW1 engine serials
I have noted that some foreign (as in non-British) -built engines supplied to the UK during WW1 have serial numbers that appear to be different in some way from the same types supplied to the air forc ...
  Topic: Packard Merlin boost regulator
dbirch

Replies: 4
Views: 6395

PostForum: Rolls-Royce Engines   Posted: Sat Aug 27, 2011 12:02   Subject: Merlin Automatic Boost Control
Greg,

In the event that you have not had a reply to your query, I have a description of how it all works. Will scan the pages next week and send to Kim to put on to apropriate section of website.
...
  Topic: RRHT Historical Series vol. 13?
dbirch

Replies: 2
Views: 3469

PostForum: Book, Mags, Films, Recordings, Reference   Posted: Tue Nov 25, 2008 08:16   Subject: RRHT Historical Series vol. 13?
I never liked the idea of not having a Number 13 in the Historical Series of RRHT books. The fact is that the aero-engines did have number 13s (Merlin for example). Cannot speak for motor car chassis ...
  Topic: Query about engine in Australian museum
dbirch

Replies: 1
Views: 4141

PostForum: Non-Technical Discussion   Posted: Fri Feb 01, 2008 03:36   Subject: Query about engine in Australian museum
Sounds like the Ford engine.


Dave Birch
  Topic: Spark plug fouling
dbirch

Replies: 9
Views: 8184

PostForum: Technical Discussion   Posted: Sat Jan 19, 2008 03:55   Subject: Spark plug fouling
What was the lead (TEL) content of the fuel in these engines? Rolls-Royce had to incorporate an afterheater in some of its later Merlins because at temps below 40 degrees the lead was separating from ...
  Topic: RR Crecy
dbirch

Replies: 11
Views: 11359

PostForum: Rolls-Royce Engines   Posted: Thu Dec 13, 2007 03:42   Subject: RR Crecy
Sorry, no recordings of the Crecy (you would have to have stood well back with the microphone!) Believe or not, testers used to stand at the side of the engine making adjustments, etc, with the most b ...
  Topic: V-1650-19, additional info needed
dbirch

Replies: 4
Views: 6111

PostForum: Rolls-Royce Engines   Posted: Thu Dec 13, 2007 03:32   Subject: V-1650-19, additional info needed
Despite Rolls-Royce interest in this idea, it never tried it out on one of its engines. One of the negative aspects was that you needed a larger oil cooler to dissipate the extra heat generated.

D ...
  Topic: Merlin power data at reduced CR/+23 boost (100/130 fuel)
dbirch

Replies: 2
Views: 4588

PostForum: Rolls-Royce Engines   Posted: Fri Dec 07, 2007 07:43   Subject: Merlin power data at reduced CR/+23 boost (100/130 fuel)
JJ

Just before the Mustang was fitted with the 5.5 C/R Merlin, an RM10SM was thus modified at Derby and ran on the testbed. Its performance was as follows:

Combat: 3000 rpm +23 lb boost
MS gear ...
 
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