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Japanese Government Railways Class 1850 Steam Locomotive

Class 1850 steam locomotive is a tank steam locomotive with a shaft arrangement of 0-6-0(C). First, the 1850 class steam locomotives were imported from Dubs by the Japanese Government Railway in 1885 as an addition to the 1800 class steam locomotives manufactured by Kitson, and later private railways such as Nippon Railway and Hokkaido Railway introduced additional locomotives of the same type, Although this locomotive is almost the same type as the Class 1800, there are some structural differences, such as rivets that can hardly be seen. In the Japanese Government Railways, a total of 20 cars were imported from 1885~1887. Later, with the separation of the Japanese Government Railways and the Nippon Railway, the number of cars in the Japanese Government Railways was reduced to 14 cars. The remaining cars were renamed Z class around 1892~1894, and later became B2 class, the same as class 1800. At the Nippon Railway, 6 cars transferred from the Japanese Government Railway became the class D3/3, and 12 more cars were added between 1894 and 1896. Hokkaido Railway introduced 3 cars in 1903, and they became class A3. After the nationalization of Nippon Railway and Hokkaido Railway, the locomotives of the same type of these private railways were all changed to the class 1850 around 1909. The locomotives were numbered 1850~1884. It seems that it was an excellent locomotive, and during the Meiji era, it was mainly used on the gradient lines in various regions, such as the Shinetsu Line and the Tokaido Line. In its later years, it seems that its main role was as a switching locomotive. After being disposed of and reacquired by private railroads, they were all discontinued by JNR in 1949, but one of the cars disposed of to private railroads and factories remained until the 1960s. The construction of the class 1850 differed slightly depending on the year of its manufacture, but the mod currently deals with the earliest of the class 1850, manufactured in 1885.

~Mod Contents~.
This mod adds 13 types of steam locomotives with different paint schemes and signs depending on the era. These will all be added as variations of [JGR Class 1850]. [No. 63] is not the type name, but the number of the locomotive that will appear in this mod. Nighttime signs were used on sections with tunnels longer than half a mile (about 800 m), even during the daytime, after 1901. The variations for nighttime use are intended for use in such sections, but strictly speaking, there is no specific rule of this kind in the regulations before 1901, so you are free to use either nighttime or daytime signs as you see fit.

Appearance year: 1885~1888
○JGR No.63 Steam Locomotive (for daytime)
Appearance year: 1885~1894
○JGR No.63 Steam Locomotive (for night, for single track after 1887)
Appearance year: 1887~1894
○JGR No.63 Steam Locomotive (for double track)
Appearance year: 1892~1897
○JGR Class Z steam locomotive (manufactured in 1885, for double track)
○JGR Class Z steam locomotive (manufactured in 1885, for single track)
Appearance year: 1897~1901
○JGR Class B2 (later Class 1850, manufactured in 1885, before 1901, for double track)
○JGR Class B2 (later Class 1850, manufactured in 1885, before 1901, for single track)
Appearance year: 1901~1909
○JGR class B2 (later class 1850, manufactured in 1885, for daytime use after 1901)
○JGR class B2 (later class 1850, manufactured in 1885, for night double track after 1901)
○JGR class B2 (later class 1850, manufactured in 1885, for night single track after 1901)
Appearance year: 1909~1948
○JGR Class 1850 (manufactured in 1885, Late Meiji era ~ Early Taisho era, for daytime use)
○JGR Class 1850 (manufactured in 1885, Late Meiji era ~ Early Taisho era, for night double track)
Appearance year: 1909~1924
○JGR Class 1850 (manufactured in 1885, Late Meiji era ~ Early Taisho era, for night single track)

~In game performance~
Max speed: 65km/h
Weight: 36.88t
Power: 281.55kw
TractiveEffort: 95.84 kN
Length (including buffer): about 8.8m

～Caution～
○There are many unknowns about Japanese vehicles of Meiji era. So, I have made my own guesses about the dimensions, colors, and other unknowns. Therefore, the dimensions and shape may differ from the actual car, and some parts may not be reproduced.
○The performance of this vehicle is a guess by the mod creator.
○Currently, the running sound is the one originally included in the game.
○The width of some parts is wider than the original size for the convenience of adapting the locomotive for the 1067mm gauge to the gauge in the game ( I aimed for almost the original size in terms of length, height, and boiler diameter). We also omitted models of some parts.
○In order not to make the contents of the mod too complicated, I have not reproduced all of the front and rear signs, and for the 1887~1901 variants, I have only reproduced the two types for regular passenger trains.
○Since I am not expecting to be able to prepare variations from the Taisho~Showa era now, the variations from the Late Meiji~Early Taisho era can be used until 1948, but if I add more variations in the future, I plan to change the year of availability. As for the front signs used on the Late Meiji - Early Taisho variations, if we follow the subsequent history, the 1924 (Taisho 13) revision made it possible to use green lights on single track sections at night as well as on double track sections (thus, as far as single track use is concerned, until 1924), Around 1930, such front signs seem to have been discontinued. Please note that the signs on trains have been changed since then.
○Please be aware that some of the descriptions in the mods may be incorrect.
○When installing the mod, please make sure that it works on your own PC and install it at your own risk.
Please understand the above in advance.

-Don’t redistribute the data of this mod without my permission. –

I'm not good at English. I wrote this description with the help of deepl translator. I’m sorry if my English is wrong.