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Search: Posts Made By: DHfan
Showing results 1 to 35 of 544
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Forum: Aviation History and Nostalgia
13th Apr 2024, 08:52
Replies: 44
Views: 5,807
Posted By DHfan

Frank Halford obviously gave Napier ideas. This...

Frank Halford obviously gave Napier ideas. This is the gear train for a Napier Deltic engine.
Nothing to do with Halford actually, it was developed from a Junkers opposed-piston design.

For those...
Forum: Aviation History and Nostalgia
5th Apr 2024, 16:41
Replies: 36
Views: 2,589
Posted By DHfan

Considerably more expensive, I believe engines...

Considerably more expensive, I believe engines were "free issue" too.
Forum: Aviation History and Nostalgia
5th Apr 2024, 08:19
Replies: 36
Views: 2,589
Posted By DHfan

In 1975, working on the shop floor in an...

In 1975, working on the shop floor in an engineering company with a bonus system where it was impossible to get less than 100%, I made £65 - £70 a week.

From there I moved to office-based jobs,...
Forum: Aviation History and Nostalgia
1st Apr 2024, 16:34
Replies: 36
Views: 2,589
Posted By DHfan

An even more basic explanation is that not having...

An even more basic explanation is that not having a UK keyboard, he doesn't have a £ key.
Forum: Aviation History and Nostalgia
1st Apr 2024, 15:01
Replies: 18
Views: 2,056
Posted By DHfan

I believe it's more than rare, it's literally the...

I believe it's more than rare, it's literally the only surviving B.IV. It's still listed for sale at Platinum Fighters.

I've never understood why the DH Museum restored W4050, the prototype, to...
Forum: Aviation History and Nostalgia
31st Mar 2024, 18:56
Replies: 18
Views: 2,056
Posted By DHfan

Considering it was the most produced variant, it...

Considering it was the most produced variant, it will be good to have another FB.VI in the country. There's only one at the moment, the composite at the de Havilland Aircraft Museum.
Forum: Aviation History and Nostalgia
21st Mar 2024, 18:19
Replies: 15
Views: 1,837
Posted By DHfan

There was a thread mentioning tractor pulling on...

There was a thread mentioning tractor pulling on Wix a few years ago. As I recall, although Merlins weren't unknown, generally the Allison was the preferred engine, performance at altitude not really...
Forum: Aviation History and Nostalgia
20th Mar 2024, 14:57
Replies: 15
Views: 1,837
Posted By DHfan

I don't believe so, although they may all use the...

I don't believe so, although they may all use the same basic crankcase. I have definitely seen references to transport heads for the later civil versions and I'm fairly sure I've seen references to...
Forum: Aviation History and Nostalgia
19th Mar 2024, 17:45
Replies: 44
Views: 5,807
Posted By DHfan

I agree it seems unlikely, but I'm only repeating...

I agree it seems unlikely, but I'm only repeating what was posted, eight years ago, and it's not a user name I recognise although he was a regular poster,

He also said the civil Merlin TBO was...
Forum: Aviation History and Nostalgia
18th Mar 2024, 18:23
Replies: 44
Views: 5,807
Posted By DHfan

I found an ancient post on the FP forum which...

I found an ancient post on the FP forum which said the oil for the Centaurus was AeroShell 100 U, apparently specially formulated for the engine.
One squadron or flight used OMD-270 instead in the...
Forum: Aviation History and Nostalgia
18th Mar 2024, 15:16
Replies: 29
Views: 2,648
Posted By DHfan

I know virtually nothing about gas turbines, but...

I know virtually nothing about gas turbines, but I do know that the Vipers in the Shackleton MR.3 ran on Avgas because it was carried for the Griffons.

I "may" have read that they could only run...
Forum: Aviation History and Nostalgia
17th Mar 2024, 12:35
Replies: 29
Views: 2,648
Posted By DHfan

Indeed, and like many others I used to get them...

Indeed, and like many others I used to get them mixed up too, until it was pointed out to me that it was "T" for tank.
Forum: Aviation History and Nostalgia
17th Mar 2024, 00:38
Replies: 29
Views: 2,648
Posted By DHfan

Grrrr!! Totally irrelevant but Bovingdon isn't in...

Grrrr!! Totally irrelevant but Bovingdon isn't in London, it's in Hertfordshire.

Despite my current location, I'm Hertfordshire born and bred. Quite a lot of people, and journalists in particular,...
Forum: Aviation History and Nostalgia
16th Mar 2024, 09:26
Replies: 29
Views: 2,648
Posted By DHfan

I wonder if "Winkle" Brown flew them all? It...

I wonder if "Winkle" Brown flew them all?
It wouldn't be a direct comparison, unless he chose to say so, but I know he flew the Meteor and the Vampire and I'd be extremely surprised if he didn't fly...
Forum: Aviation History and Nostalgia
15th Mar 2024, 15:19
Replies: 44
Views: 5,807
Posted By DHfan

As Jhieminga, stated, it's an early Centaurus. ...

As Jhieminga, stated, it's an early Centaurus.

If an aeroplane is designed for 2000+hp, it's hardly likely to be fitted with an engine with around a third of the power.

The same picture is in...
Forum: Aviation History and Nostalgia
14th Mar 2024, 00:27
Replies: 44
Views: 5,807
Posted By DHfan

Dropped?

Dropped?
Forum: Aviation History and Nostalgia
12th Mar 2024, 00:31
Replies: 44
Views: 5,807
Posted By DHfan

I've no idea of how many miles I did now but I...

I've no idea of how many miles I did now but I used to buy a 99p gallon of oil a week for my 1962 Vauxhall Cresta.

So far, I think you've got the winner.
Forum: Aviation History and Nostalgia
8th Mar 2024, 08:08
Replies: 34
Views: 2,502
Posted By DHfan

That caused me to raise my eyebrows too but on...

That caused me to raise my eyebrows too but on reflection, it was literally the first few days of a war of unknown duration. Nobody knew if the phrase "it will all be over by Christmas" might have...
Forum: Aviation History and Nostalgia
7th Mar 2024, 11:46
Replies: 34
Views: 2,502
Posted By DHfan

Bill Gunston's World Encyclopedia of Aero Engines...

Bill Gunston's World Encyclopedia of Aero Engines confirms everybody except the OP's views.

There was absolutely no connection between the Rolls-Royce Ghost engine and the Eagle or any other...
Forum: Aviation History and Nostalgia
5th Mar 2024, 10:51
Replies: 44
Views: 5,807
Posted By DHfan

Yes, it's a particular grade of AeroShell, which...

Yes, it's a particular grade of AeroShell, which Shell will make, but understandably there's a minimum order of about a grillion* gallons.

It seems that in theory a specified substitute is...
Forum: Aviation History and Nostalgia
5th Mar 2024, 10:07
Replies: 44
Views: 5,807
Posted By DHfan

I had a '62 Vauxhall Cresta that used nearly as...

I had a '62 Vauxhall Cresta that used nearly as much oil as petrol.

I've just remembered the first time I ever heard of a sleeve-valve engine. It was in the middle sixties and an article in Motor...
Forum: Aviation History and Nostalgia
5th Mar 2024, 08:48
Replies: 44
Views: 5,807
Posted By DHfan

I would guess that all sleeve-valve engines are a...

I would guess that all sleeve-valve engines are a bit oily with effectively twice as many cylinder oil films required. One between the sleeve and the block and another between the piston and sleeve.
Forum: Aviation History and Nostalgia
5th Mar 2024, 08:13
Replies: 34
Views: 2,502
Posted By DHfan

Much to my surprise, according to Wiki, the...

Much to my surprise, according to Wiki, the Rolls-Royce Falcon did have an epicyclic reduction gear. I know they're pretty much standard on radials but it's the first I've heard of one on an inline...
Forum: Aviation History and Nostalgia
4th Mar 2024, 21:41
Replies: 34
Views: 2,502
Posted By DHfan

The drivel was regarding your assertion that...

The drivel was regarding your assertion that epicyclic gearing was in virtually every gearbox and engine in the world, which is absolute rubbish, or if you prefer - just plain wrong.
Forum: Aviation History and Nostalgia
4th Mar 2024, 14:32
Replies: 34
Views: 2,502
Posted By DHfan

Although I was actually looking to see if an...

Although I was actually looking to see if an early copy of The Aeroplane was available, I found a book on the Internet Archive called Building and Flying an Aeroplane, published in Chicago in 1912....
Forum: Aviation History and Nostalgia
3rd Mar 2024, 17:25
Replies: 34
Views: 2,502
Posted By DHfan

I don't "believe" it was invented beforehand, I...

I don't "believe" it was invented beforehand, I know it was. I've no idea what Rolls-Royce patented but even discounting the Greeks and Romans 2,000 years ago, Frederick Lanchester used an epicyclic...
Forum: Aviation History and Nostalgia
3rd Mar 2024, 10:24
Replies: 34
Views: 2,502
Posted By DHfan

Strange interpretation of left behind. It...

Strange interpretation of left behind.

It won the 1914 French Grand Prix.

It's years since I read Sir Geoffrey de Havilland's autobiography, Sky Fever, but I have an idea he mentioned searching...
Forum: Aviation History and Nostalgia
3rd Mar 2024, 07:51
Replies: 34
Views: 2,502
Posted By DHfan

I also had three cars with overdrive in the...

I also had three cars with overdrive in the seventies. No other car or motorcycle I've ever owned has had epicyclic gearing. I believe automatic gearboxes use epicyclic gearing, but I've never owned...
Forum: Aviation History and Nostalgia
3rd Mar 2024, 00:47
Replies: 34
Views: 2,502
Posted By DHfan

Rubbish. Drivel even.

Rubbish. Drivel even.
Forum: Aviation History and Nostalgia
2nd Mar 2024, 22:21
Replies: 34
Views: 2,502
Posted By DHfan

My sentiments entirely. I would have thought...

My sentiments entirely. I would have thought quite the opposite.
Forum: Aviation History and Nostalgia
27th Feb 2024, 10:01
Replies: 9
Views: 788
Posted By DHfan

I have a feeling I've read the term "weapon bent"...

I have a feeling I've read the term "weapon bent" some time in the dim and distant past in regard to failed AI equipment.
Forum: Aviation History and Nostalgia
19th Feb 2024, 15:31
Replies: 4
Views: 773
Posted By DHfan

I found a post on the Flypast forum from 11 years...

I found a post on the Flypast forum from 11 years ago where Peter Arnold said AB910 had a four-bladed prop before July 1951 for air racing, long before it was donated.to the BBMF.

In later years...
Forum: Aviation History and Nostalgia
19th Feb 2024, 12:22
Replies: 4
Views: 773
Posted By DHfan

Where's the "dislike" button when you need...

Where's the "dislike" button when you need one?
Forum: Aviation History and Nostalgia
19th Feb 2024, 08:03
Replies: 9
Views: 1,016
Posted By DHfan

Harris was appointed to carry out the...

Harris was appointed to carry out the government's or war cabinet's policy of area strategic bombing which he carried out with dogged determination, not only because he was ordered to do so but also...
Forum: Aviation History and Nostalgia
18th Feb 2024, 18:44
Replies: 9
Views: 1,016
Posted By DHfan

A large force of Mosquitos couldn't have been...

A large force of Mosquitos couldn't have been formed that much earlier as the bombers didn't enter service until very late 1941 or early 1942. The bulged bomb bay doors to carry the 4000 lb bomb...
Showing results 1 to 35 of 544
 
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