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Tempest II due to fly at Eastbourne in August

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Tempest II due to fly at Eastbourne in August

Old 25th Aug 2022, 11:26
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Do I recall correctly that the Merlin never achieved civilian certification?
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Old 25th Aug 2022, 11:41
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No, you don't.
Avro York, Avro Tudor, Canadair North Star...
I assume Haltons and Lancastrians were on the civil register too.
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Old 25th Aug 2022, 14:05
  #43 (permalink)  
 
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Originally Posted by DHfan View Post
No, you don't.
Avro York, Avro Tudor, Canadair North Star...
I assume Haltons and Lancastrians were on the civil register too.
Haltons weren't Merlin engined.but Argonauts were.
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Old 25th Aug 2022, 14:45
  #44 (permalink)  
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Re civvy Merlins, from Wikipedia...

With the end of the war, work on improving Merlin power output was halted and the development effort was concentrated on civil derivatives of the Merlin.[22] Development of what became the "Transport Merlin" (TML)[23] commenced with the Merlin 102 (the first Merlin to complete the new civil type-test requirements) and was aimed at improving reliability and service overhaul periods for airline operators using airliner and transport aircraft such as the Avro Lancastrian, Avro York (Merlin 500-series), Avro Tudor II & IV (Merlin 621), Tudor IVB & V (Merlin 623), TCA Canadair North Star (Merlin 724) and BOAC Argonaut (Merlin 724-IC).[24] By 1951 the time between overhauls (TBO) was typically 650–800 hours depending on use.[25][26] By then single-stage engines had accumulated 2,615,000 engine hours in civil operation, and two-stage engines 1,169,000.[27]
I seem to recall that "transport banks" were favoured for the race-prepared Merlins at Reno as they had much better longevity - allied with Allison con rods which had the same stroke as the RR parts but seemed better suited to the abuse!
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Old 31st Aug 2022, 12:42
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In the absence of news about the Sywell Tempest, an update on the P&W powered Canadian aircraft


Last edited by Fargo Boyle; 1st Sep 2022 at 11:10.
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Old 1st Sep 2022, 16:47
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Old 1st Sep 2022, 17:21
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What mind?
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Old 1st Sep 2022, 21:50
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Hurricane is just a Spitfire; your go...
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Old 1st Sep 2022, 22:55
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Is a Tempest with a P&W still a Tempest...?
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Old 2nd Sep 2022, 12:18
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A handicapped Tempest?

I still want to see it fly, no matter whether there's a P&W or a Bristol in there.
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