Nn3 Steam Engines Page 1

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	Drawing of simplex style valve gear for the GHQ K27 to replace the Marklin valve gear on the Marklin 2-8-2 chassis.
	Drawing of Walschaerts style valve gear for the GHQ K27 to replace the Marklin valve gear on the Marklin 2-8-2 chassis.
	Drawing showing how to modify the Marklin style valve gear for the GHQ K27 to imitate the Simplex valve gear on the Marklin 2-8-2 chassis.
	C16 drive system from Roger Hord
	Roger Hord's K37 Drive. Click on the image to get to the next page with extensive details on this drive system.
	Leslie Trill has used 2mm Society parts for this gear reduction. He says the engine crawls very nicely. Click on the image for a page with more information.
	Narrow Gauge of Southern Africa. This mountain is a Cape Gauge Engine which was built in the U.K. about the time of the First World War. Cape Gauge is 42 inches or 3ft 6in between the rails and is virtually the standard gauge of Southern Africa south of Lake Tanganyika. These railways all came from Cecil Rhodes development of southern Africa under British Colonial Rule. The last in this line of engines was the Class 25 of Rhodesia and South Africa the grey hounds of passenger service. This model was made from a Del Prado static model of a class 11 of the Benquela Railway of Angola. This railway was built to extract raw minerals from Northern Rhodesia and Southern Congo to the port of Benguela.
	In East Africa the gauge was Meter gauge even thou it was built by the British starting at the port of Mombassa in Kenya the system extended to Uganda and Tanganyika which today is Tanzania. In the early days of Independence these three countries formed the East African Community with common services customs and communications such as East African Railways and Harbours. This engine represents a the second 2700 Class Mikado's built in India and supplied as used equipment to Tanzania in the late 1970's. Again the shell comes from a Del Prado model of an Indian Railways class YP Pacific which used the same boiler cab and tender as their class YG Mikado's. The smoke deflectors need to be removed yet and he model repainted to grey and black. In Tanzania they were classed as 2700's 2701 to 2705 numbers which had originally been assigned to MacArthur 2-8-2's which arrived from the USA during WWII. These engines saw service in Moshi and Tabora in the mid to late 1970's some lasting into the early 1980's before being withdrawn.
	Drawing showing how to modify a pair of Bachmann 4-4-0's to produce a 4-6-0 and maybe a unique display engine for your station park or some other public location. Like everything on this page I have done it so even though I do not have pictures ready yet for everything these things do work. (This is a standard gauge version)
	Drawing showing a proposed frame for a 2-8-2 inside frame style. Drivers are 40 inch and pilot wheels are 28 inch. Using a 0816 motor from Micro Motor with shaft extension and gear train.
	Drawing shows a Nn3 chassis using 2MM type powering of the chassis. Parts are modified to suit this application. Driver size is 40 inch. Using a 0816 motor from Micro Motor with shaft extension and 2MM 20t 14t and 20t gears. Gears are reduced to 1mm width and axle muff is reduced in length. The gear train yields a 28.5 : 1 reduction. The addition of another 20T/14t would given a reduction of 40.7 : 1.
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by G.A. Hamilton
last update to this page 15th January 2009
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Nn3 Steam Engines Page 1