JNR Class C63

Class C63
Type and origin Power type Steam Total produced 1
Specifications Configuration: ​  • Whyte 2-6-2 Prairie Gauge 1,067 mm (3 ft 6 in) Driver dia. 1,520 mm (5 ft 0 in) Length 18,275 mm (59 ft 11.5 in) Total weight 100.20 t
Performance figures Tractive effort 12,570 kgf (123,300 N; 27,700 lbf)

Background of the plan

It was around 1955 ( 1955) that C63 was planned . At that time, financial , etc. flame electrification is also not slow progress, also railcars and diesel locomotives of the technology is also immature, smokeless was not in a situation where Ikeru and steadily. On the other hand existing locomotive is in some of them is progressing aging, transport demand since that would lead to a shortage of locomotives in conjunction with the increase, "rework" new-made steam locomotive of what is in the unavoidable The decision was made.

Structure

Rural local lines in the customer currency is intended to be used in a dual purpose, mainly aging had been particularly serious C51 form has been designed for the purpose of replacing the. The structure is based on type C 58, but the goal was to obtain performance as close to C 51 as possible. In order to become the last steam locomotive manufactured by JNR, the following new design is adopted. Boiler all welding pressure as a structural conventional 16 kg / cm 2 from the railway steam locomotive maximum 18 kg / cm 2 for boosting the. We will improve the ride comfort by sprung loading of the bogie frame of the single-axis follower . Adopted a deflector with a shape cut off the lower part . Conventional Montetsu differential , such as running board from angle rather than in a manner that supports projecting the stay member, similar to Witte type adopted in Germany, the smoke chamber method for fixing projecting support member horizontally from. Newly adopted coil spring and oil damper for tender truck . Bearing the wheel all including the axis-destination followers axis roller bearings and. However , as with C59 type , C61 type , C62 type manufactured after World War II , plain bearing is used for the driving wheel shaft and the front wheel shaft, and the wheel bearing shaft is used as the roller bearing and the wheel bearing shaft is used as the roller bearing. The axis arrangement was the 1 C 1 (White type: 2-6 - 2, American style: Prairie) like the C 58 type which became the base.

Discontinued

Number plate of C 63 1 exhibited at the Kyoto Railway Museum Thus, in 1956, the design drawing was completed, firstly a prototype car was to be manufactured, and a manufacturing order was supposed to be issued. However, prior to the official production decision , the progress of smokeless progress and the supply and demand of the locomotive were reconsidered, and at the present stage it reached the conclusion that the manufacture of the steam locomotive is not absolutely necessary, I was supposed to watch over the situation, seeing off. Then the technology of AC electrification and diesel locomotive and electric cars was established immediately afterwards , and the electrification / dieselization advanced rapidly. In addition, the National Railways made plans to completely eliminate the steam locomotive in 15 years from the fiscal year of 1960 (Showa 35 years) as " Power Modernization Plan " in 1959 (Showa 34 years), and made it implementation (completion as planned in 1975, the year of the degree of 1976 March). As a result, there was no concern that the steam locomotives would be insufficient at all, but since the national railway was converted to the policy of abolishing the steam locomotive, finally the C63 type manufacturing decision was not made. As for the C63 type, like the EH50 type electric locomotive which was also discontinued in production , a lot of information and materials are introduced even after discontinuation of production, and as a form of disappointing without seeing the sun, railroad fans It is widely known. However, the basic C 58 type has a tendency that remarkable pitting and yawing occur at high speed when the dynamic axes are concentrated at the center of the frame at the short axis distance and the overhang at the front and rear ends is large It was known that there was. Therefore, the boiler combustion purposes efficiency grate in the present format expand its area, further worsening the symptoms since the overhang is larger heavier than C58 shape, even if actually manufactured initially Some possibilities have been pointed out that the targeted C 51 style performance could not be obtained. Then at the Koriyama Plant (present · Koriyama General Vehicle Center ), 1/5 scale live steam was produced based on the design drawing, mainly for the succession of the steam locomotive related technology to the young staff , the dynamic mini SL It is used as an event etc. In addition to models being exhibited on the first floor of Koriyama station , models are also displayed in the exhibition room of Umezuroji steam locomotive building . Besides this, the number plate of C63 1 painted in vermillion is present in the plum alley steam locomotive building.

See also

• Japan Railways locomotive numbering and classification

External links

Category:1067 mm gauge locomotives of Japan Category:Steam locomotives of Japan Category:2-6-2 locomotives Category:Preserved steam locomotives of Japan Category:Railway locomotives introduced in 1955