Campbell and the K3, Italy, 1937
Blue Bird K3 is a hydroplanepowerboat commissioned in 1937 by Sir Malcolm Campbell, to rival the Americans' efforts in the fight for the world water speed record. She set three world water speed records, first on Lake Maggiore in September 1937, then later twice raising her own record.
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The name 'K3' was derived from its Lloyd's unlimited rating, and was carried in a prominent circular badge on the forward hull.
Design[edit]
After Campbell's achievement of the 300 mph land speed record with Blue Bird in 1935 he retired from the land speed record. Shortly afterwards he switched his attentions to the water speed record, at that time dominated by the American Gar Wood.[1]
Bluebird was designed by Fred Cooper and built by Fred Goatley of Saunders-Roe. How to open dmg files in windows 10. The design was intended to be the smallest possible hull capable of carrying the Rolls-Royce R racing engine. Campbell had already used this engine in his Blue Bird car, and they had also been used in pairs in Segrave and Kaye Don's Miss England boats. Of the three individual R engines used by K3, one had previously run in Blue Bird and one in Miss England II.
The most compact layout placed the engine behind the driver and relied on a front-mounted v-drive gearbox to reverse the direction of the drive shaft and increase the shaft revolutions 1:3 to 9,000 rpm. This gearbox, along with much of the mechanical design, was designed by Reid Railton who had previously designed cars for Campbell.[2]
Unlike Gar Wood's multi-engined monsters, Blue Bird was designed for a single engine, and the smallest possible craft to carry it. She was 23 feet (7.0 m) long with a beam of 9 feet 6 inches (2.9 m), compared to 38 feet for Miss America X. Her estimated top speed on paper was to be 130 mph.[2][1] It was usual at this time for English hydroplanes to have their engines mounted as far astern as possible (Gar Wood disagreed, and had pointed this out to Segrave). In Cooper's usual style, the hull was wide and low, with a narrow, rounded, central superstucture. The engine was placed right back to the transom and the superstructure was extended rearwards in a fabric-covered overhanging conical nacelle. This rearward weight distribution encouraged planing, but could lead to some peculiar attitudes when setting off at slow speeds, as the whole boat appeared to be sinking by the stern. The displacement was only 4,945 pounds (2,243 kg) and the engine alone weighed 1,640 pounds (740 kg).
Construction was of plywood, although the attention paid to weight-saving was such that this was laminated to order from varying numbers of veneers, rather than sawn from factory-made standard sheets. The frames are formed of single-piece unjointed sheets of 7-ply, the hull skins of 5-ply and the deck of 6-ply. Even the engine bearers were made of a central plywood box girder.[2] Reserve buoyancy in the event of an accident was provided by 36,000 ping pong balls, sewn into pillow cases.[2]
Records[edit]
On 1 September 1937, at Lake Maggiore on the border between Switzerland and Italy, K3 set a record of 126.32 mph,[3] breaking Gar Wood's previous 5-year-old record.[1] The next day she improved this to 129.5 mph.
Breaking the design speed of 130 would require another year, when on 17 August 1938 at Lake Hallwyl in Switzerland at 130.91 mph(210.63 km/h).
Ventnor 'three pointer'[edit]
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Despite these records, Campbell was dissatisfied with their small margin over the previous record (6 mph).[1] K3's hull was a single-step hydroplane, as already used for Miss England. This lifted half of the hull clear of the water, reducing drag upon it. A new idea from America was the 'three point' hydroplane, where the forward hull is divided into two sponsons and the boat rides at speed on just these and the propellor. This reduces the wetted area (and drag) still further. It was not possible to convert K3 to this hull form, so Campbell began work on a whole new boat, K4, re-using the same engine.
Restoration[edit]
The original boat was restored at Filching Manor in East Sussex and is now in working order. The boat was stripped down and fully rebuilt using parts to the original standard. (http://www.k3bluebird.com)
She ran on the regatta course at Henley-on-Thames during the Traditional Boat Festival on 18-19 July 2015. (http://www.tradboatfestival.com/#!bluebird-k3/c9ig)
External links[edit]
References[edit]
- ^ abcdHarris, Skimming the Surface
- ^ abcdFox (1937).
- ^Knowles, Arthur (2001). The Bluebird Years. Sigma Leisure. ISBN978-1-85058-766-8.
Sources[edit]
- Fox, Uffa (1937). '31: Bluebird'. Racing, Cruising and Design. London: Peter Davies. pp. 172–174. ISBN0907069150.
- Harris, Fred (2000). Skimming the Surface. Ainsdale Press.
- Tremayne, David (2005). Donald Campbell: The Man Behind the Mask. Bantam Books. ISBN0-553-81511-3.
- Villa, Leo (1976). The World Water Speed Record.
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Blue_Bird_K3&oldid=901243341'
Napier-Campbell 'Bluebird II' | |
---|---|
Overview | |
Production | one-off (1927) |
Designer | C. Amherst Villiers |
Body and chassis | |
Body style | open-wheel, front-engined racing car. |
Related | Campbell-Napier-Railton Blue Bird |
Powertrain | |
Engine | 22.3 litre W12-block Napier Lion VIIA, 450 hp @ 2,000 rpm, 502 hp @ 2,200 rpm |
Transmission | 3-speed epicyclic, ratios of 0.333, 0.666, 1 final drive ratio 1.27:1 |
Dimensions | |
Wheelbase | 12 ft 1.5 in (3.696 m), track 5 ft 5.25 in (1.6574 m) front, 4 ft 9 in (1.45 m) rear |
Length | 15 ft (4.6 m) |
Curb weight | approx. 3 tons dry |
The Napier-Campbell Blue Bird was a land speed record car driven by Malcolm Campbell. Its designer was C. Amherst Villiers and Campbell's regular mechanic Leo Villa supervised its construction.[1]
This was Campbell's first car to use the Napier Lion aero engine. His intention was to surpass his previous Sunbeam Blue Bird's achievement of the 150 mph barrier and to reach 200 mph.
1927[edit]
Blue Bird in 1927
When first built, the car used a Napier Lion engine of around 500 bhp. It was of conventional form with a front-mounted vertical radiator and the driver behind the engine. The three banks of the W-12 engine were hidden behind bulges in the narrow bonnet, with exhaust stub pipes protruding.
Bluebird's first record attempt was on 4 February 1927 at Pendine Sands.[2] A peak speed of 195 mph (314 km/h) was achieved, tantalisingly close to the magic 200 mph (320 km/h), but the two-way average recorded for the record was lower, at 174.883 mph (281.45 km/h).[3]
1928[edit]
Napier-Campbell 'Blue Bird III' | |
---|---|
Overview | |
Production | one-off (1928), rebuild of the 1927 car. Other details unchanged |
Body and chassis | |
Related | Napier-Campbell 'Blue Bird II' |
Powertrain | |
Engine | 23.948 litre Napier Lion 'Sprint', 875 hp (652 kW) at 3,300 rpm |
Transmission | final drive ratio 1.5:1 |
Dimensions | |
Length | 18ft |
Curb weight | 52cwt dry |
The 1927 record was short-lived, as Segrave's Sunbeam 1000 hp achieved both the 180 mph and 200 mph targets a month later. This prompted Campbell to rebuild the car as 'Blue Bird III' for 1928. https://nnnuwb.weebly.com/blog/mini-dam-dmg. He persuaded the Air Ministry to allow him a Schneider Trophy-tuned 'Sprint' engine, as fitted to the Supermarine S.5 seaplane, of 900 hp (670 kW).
Improved aerodynamics were innovatively tested in Vickers' wind-tunnel by R.K. Pierson, their Chief Designer. Blue Bird’s body shape was substantially changed, with the famous coachbuilders Mulliner producing the bodywork. The results were unorthodox. A vertical tail fin was added for stability, a first for Blue Bird and land speed record cars. Open spats behind the wheels also reduced drag. The biggest change was to the radiators, which were moved to the rear of the car and mounted externally.[4] These surface radiators were made by Fairey Aviation and contained 2,400 ft (730 m) of tube.[5] Removing the nose radiator allowed a low, rounded nose with better streamlining.[6] However, one French newspaper compared its looks to a whale.
Following Segrave to Daytona Beach, on 19 February 1928 Campbell took the record at 206.956 mph (333.063 km/h), breaking the 200 mph barrier for his first time.[7] Once again though he only held the record for a couple of months, losing it by a whisker to Ray Keech and the White Triplex.
1929[edit]
Campbell sought a more predictable venue than a tidal beach, so he set off to survey possible sites by air. Africa showed promise, first at a site 600 miles from Timbuctu and so impractically inaccessible. A dry lake bed in South Africa, the Verneukpan, was still 450 miles (720 km) from Cape Town, but did have some chance of access.[8]
Blue Bird was rebuilt for a third time. The chassis, engine and drivetrain remained the same, but the bodywork was replaced with one built in Dumfries by Arrol-Aster.[9] This body was lower, requiring a hump around the cockpit where Campbell now sat astride the gearbox. The surface radiators were replaced by a conventional circular nose opening, covered by a distinctive 'birdcage' grille.[10][11]
Unfortunately, after a period of five years of no rainfall, it poured down almost as soon as they arrived. Campbell returned to Cape Town, where on his 44th birthday he learnt that Henry Segrave at Daytona Beach had set a new record in Golden Arrow at 231.44 mph (372.47 km/h). Blue Bird was unable to match this at the African altitude and climate, but he made the best use of the long course and set the world 5 mile and 10 mile records at 212 mph (341 km/h).[7]
After Segrave had raised the record in Golden Arrow by a whole 30 mph (48 km/h) though, Campbell knew that Blue Bird was beaten and began work on a new car, the Campbell-Napier-Railton Blue Bird.
References[edit]
- ^Leo Villa (1969). The Record Breakers, Sir Malcolm & Donald Campbell, Land and Water-speed kings of the 20th century. Hamlyn.
- ^'Bluebird at Pendine, setting the 4th Feb record'. Brooklands photo archive.
- ^Holthusen, Peter J.R. (1986). The Land Speed Record. ISBN0-85429-499-6.
- ^'Rear above view of Blue Bird III, showing the external radiators'. Brooklands photo archive.[permanent dead link]
- ^'1928 Napier-Campbell Blue Bird III'. Bluebird team racing. Archived from the original on 1 October 2008.
- ^'Record-breaking Pendine Sands' (photo). Sand Speed Wales.[permanent dead link]
- ^ ab'Sir Malcolm Campbell, biography'. Bluebird team racing.
- ^'Verneuk Pan'. Bluebird team racing. Archived from the original on 28 June 2007.
- ^'Blue Bird, 1929'. Racing Campbells. Archived from the original on 15 July 2011.
- ^'The 1929 Blue Bird, showing the 'birdcage' grille'. Brooklands photo archive.[permanent dead link]
- ^'Seek New Auto Speeds Marks with Streamline Car' Popular Mechanics, May 192
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- 'record-breaking Pendine Sands'. Sand Speed Wales. Archived from the original(photos) on 9 September 2010. Many rare period photos.
Bibliography[edit]
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- Kenny, Paul (2009). The Man Who Supercharged Bond: The Extraordinary Story of Charles Amherst Villiers (Hardback). Sparkford: Haynes Publishing. ISBN978-1-84425-468-2.
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