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Topic: Napier Deltic

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	History 1
		D. Napier and Son is an under-rated company which has not only manufactured superb products bringing credit to this country, but has also been responsible for the training of engineers to carry its standards of excellence to be used by other industries.
		Napiers realized the fundamental features for an aero-engine, low weight, smallest possible frontal area and maximum power, this generally means squeezing many cylinders into a small volume.
		The author was employed by D Napier and Son.
	www.ptfnasty.com /ptfDelticHist1.htm (2868 words)

	Napier Deltic
		The term Deltic (meaning in the form of the Greek letter Delta) is used to refer to both the opposed piston high speed diesel engine designed and produced by Napier & Son, and the locomotives produced by English Electric using these engines for British Railways, for which see elsewhere.
		The sides of the triangle were cylinders; the Deltic engine was an opposed piston design, meaning that instead of each cylinder having a single piston and being closed at one end with a cylinder head, the elongated cylinder would contain two opposing pistons driving in opposite directions.
		In addition, Deltic diesels served in MTBs and PT Boats built for other navies; particularly notable being the Norwegian built Tjeld (Nasty) class, which were also sold to Germany, Greece, and even the United States Navy.
	www.teachersparadise.com /ency/en/wikipedia/n/na/napier_deltic.html (639 words)

	Deltic History
		These were the 37K series Deltic which suffered from piston failure, due to the hidural piston crown becoming detached from the skirt due to fatigue failure of the copper alloy.
		This fault was eventually overcome and the Deltic is still in use by the Royal Navy in mine sweepers.
		The Deltics used in the locos were running about 5000 hours between overhaul which was quite good.
	www.ptfnasty.com /ptfDelticHist.htm (243 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		The Deltic story began in 1944 when the British Admiralty commissioned Napier to design a diesel engine for their Motor Torpedo Boats and other lightweight, high speed craft.
		Before the war Napier had been working on aviation diesel designs (licensed versions of the Junkers Jumo 204) and the Admiralty felt these would be a reasonable starting point for the larger design they required.
		Deltic engines were easily removed upon break down, generally being sent back to the manufacturer for repair.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Napier_Deltic (751 words)

	BBC - h2g2 - The Deltic Locomotive
		The Deltic arrangement was a triangle with three crankshafts at the corners and the cylinders as the sides of the triangle.
		Deltics were moved onto secondary services; however, it was too expensive for BR to maintain such a small fleet of non-standard locos, especially as they were really too powerful for the duties they were assigned.
		Deltic was donated to the Science Museum in London, and is currently at a National Railway Museum exhibition at Shildon in County Durham.
	www.bbc.co.uk /dna/h2g2/A11815175 (2425 words)

	CNC Machining Craftsman—Clen Tomlinson
		Napier and Son Ltd. had a license to develop this unit as the “Culverin” aero engine in 1935 but it was not until after the 2
		Napier Deltic engine as seen at the PRIME show in Oregon, September, 2003.
		Three crankshaft main bearing frames—The main bearing frames are the center of the crankcases which form the “corners” of the triangle and bolt to the three cylinder block assemblies to form the main structure.
	www.craftsmanshipmuseum.com /Tomlinson.htm (3651 words)

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