NS 7000

{{Short description|Dutch steam locomotive class}}

{{more citations needed|date=June 2022}}

{{Infobox locomotive

| name = NS 7000

| image = HUA-163285-Afbeelding van de fabrieksnieuwe stoomlocomotief nr. 48 "Zeist" (serie 41-50) van de N.C.S. (Nederlandsche Centraal-Spoorwegmaatschappij), later omgenummerd tot nr. 158 (serie 151-160) van de S.S. en .jpg

| powertype = Steam

| builder = Sächsische Maschinenfabrik, Hohenzollern

| builddate = 1899–1903

| totalproduction = 10

| whytetype = 4-4-0T

| uicclass = 2'B

| gauge = 1,435 mm (4 ft 8 1⁄2 in)

| leadingdiameter = {{cvt|800|mm|ftin}}

| driverdiameter = {{cvt|1350|mm|ftin}}

| over bufferbeams = {{cvt|8930|mm|ftin}}

| height = {{cvt|3800|mm|ftin}}

| locoweight = {{cvt|37|MT|ST LT}}

| fueltype = Coal

| fuelcap = {{cvt|1|MT|ST LT}}

| watercap = {{cvt|3.5|m3|impgal}}

| firearea = {{cvt|1.04|m2|sqft}}

| boilerpressure = {{cvt|12|kg/cm2|psi}}

| tubearea = {{cvt|48|m2|sqft}}

| fireboxarea = {{cvt|5|m2|sqft}}

| superheaterarea = {{cvt|20|m2|sqft}}

| cylindercount = 2

| cylindersize = {{cvt|360|x|500|mm|in}}

| valvegear = Walschaerts

| maxspeed = {{cvt|75|km/h|mph}}

| tractiveeffort = {{cvt|4030|kgf|lbf}}

| operator = NS, SS and NCS

| powerclass = NS: LO

| fleetnumbers = NCS: 41–50
SS: 151–160
NS: 7001–7010

| withdrawndate = 1947 - 1954

| disposition = All scrapped

}}{{Commons category|NS 7000}}

The NS 7000 was a series of tank engines of the Dutch Railways (NS) and its predecessors Maatschappij tot Exploitatie van Staatsspoorwegen (SS) and Nederlandsche Centraal-Spoorweg-Maatschappij (NCS).

History

In 1899, the NCS bought a tank engine from the Sächsische Machinenfabrik in Chemnitz for use on the local railway lines.{{Cite web |title=Garrattfan's Beginner's guide to locomotive kit building with DJH NS 7000 E198 |url=https://www.modelrailroading.nl/Projects/NS7000n/pages/01%20history/nl.html |access-date=2022-03-31 |website=www.modelrailroading.nl}} Inspiration was taken from the 2.311 to 2.380 series of the French Compagnie des chemins de fer du Nord.{{Cite book |last=Wijck Jurriaanse |first=N.J. van |url=https://www.worldcat.org/oclc/905461491 |title=De Nederlandsche Centraal Spoorwegmaatschappij |date=1973 |publisher=Wyt |isbn=90-6007-527-7 |location=Rotterdam |oclc=905461491}} After the locomotive entered service and proven itself with the NCS, a follow-up order was placed for four more locomotives, which were put into service in 1901 as 42–45. No. 41 was delivered in the original green NCS livery, but Nos. 42-45 were painted in the new ocher yellow livery introduced in 1901 with olive green bands with white and red piping. In 1901 all five locomotives 41-45 were sold to the Nederlandsche Buurtspoorweg-Maatschappij (NBM).

In 1902, a batch of three locomotives (Nos. 46-48) was delivered with another batch of two locomotives (Nos. 49–50) arriving the following year, these being built by Hohenzollern in Düsseldorf-Grafenberg.

Modifications

All ten locomotives were built without a superheater. In 1909, Nos. 42 and 48 were fitted with a smokebox superheater, after favorable results had been obtained with express locomotives Nos. 19 and 21. After the superheater also produced favorable results with Nos. 42 and 48, Nos. 43, 47 and 50 were also fitted in 1910 and 1911. The superheater of No. 48 was removed in 1912 and received a fully occupied superheater. No. 41 received a flame tube superheater from Werkspoor in Amsterdam in 1914. In 1916 the NCS bought back the five locomotives sold to the NBM.

In 1919, the NCS was taken over by the SS, with these locomotives being included in the SS numbering as Nos. 151–160. When the locomotive and rolling stock fleets of the HSM and the SS was merged in 1921, the locomotives of this series were given the NS numbers 7001–7010. The NS continued the fitting of superheaters, so that eventually all locomotives of this series were equipped with a superheater. Other changes carried out by the NS involved the installation of a sandbox on the boiler around 1924 and the removal of the bell after 1938.

In and After NS service

The NS used these locomotives, among other routes, on the Haarlemmermeer lines, to replace the series 7700.{{Cite book|last=Waldorp|first=H.|url=https://www.worldcat.org/oclc/63833327|title=Onze Nederlandse stoomlocomotieven in woord en beeld|date=1986|publisher=De Alk|isbn=90-6013-947-X|edition=7e, gew. dr|location=Almaar|oclc=63833327}}

From 1954 onwards, No. 7001 was used by the NS on the NTM line between Groningen and Drachten. No. 7001 was the last former NCS locomotive to be withdrawn in 1954, after which the locomotive served for several months as a static boiler for the Wilco factory in Assen. In 1955 the engine was scrapped in Veenendaal, after 55 years of service and 2.2 million kilometers traveled.

NS 7009 was sold to the Kempensche Zinc company in Budel in 1951. The locomotive remained there under its NS number until 1967, when it was sold for scrap.

class="wikitable" style="float"

!Builder

!Lot no.

!Built

!NCS number

!SS number

!NS number

!Withdrawn

!Notes

Sächsische Machinenfabrik

|2471

|1899

|41

|151

|7001

|1954

|

Sächsische Machinenfabrik

|2472

|1901

|42

|152

|7002

|1952

|

Sächsische Machinenfabrik

|2473

|1901

|43

|153

|7003

|1951

|

Sächsische Machinenfabrik

|2474

|1901

|44

|154

|7004

|1952

|

Sächsische Machinenfabrik

|2475

|1901

|45

|155

|7005

|1952

|

Hohenzollern

|1544

|1902

|46

|156

|7006

|1954

|

Hohenzollern

|1545

|1902

|47

|157

|7007

|1948

|

Hohenzollern

|1546

|1902

|48

|158

|7008

|1953

|Briefly named "zeist"

Hohenzollern

|1618

|1903

|49

|159

|7009

|1951

|

Hohenzollern

|1619

|1903

|50

|160

|7010

|1947

|

Gallery

File:Du_Nord_2.311_to_2.380.jpg

File:HUA-165061-Afbeelding van de stoomlocomotief nr. 42 van de N.C.S. (serie 41-50, later serie 151-160 van de S.S. en serie 7000 van de N.S.) te Utrecht, ter hoogte van de Boorstraat.jpg|Steam locomotive no. 42 of the NCS (series 41–50, later series 151-160 of the SS and series 7000 of the NS) in Utrecht, near the Boorstraat.

File:HUA-165068-Afbeelding van de stoomlocomotief nr. 42 van de N.C.S. (serie 41-50, later serie 151-160 van de S.S. en serie 7000 van de N.S.) met een lokaaltrein te Utrecht.jpg|Steam locomotive no. 42 of the NCS (series 41–50, later series 151-160 of the SS and series 7000 of the NS) with a local service in Utrecht.

File:HUA-151295-Afbeelding van de stoomlocomotief nr 7008 (serie 7000) van de N.S. met rijtuigen langs het perron van het station te Bovenkerk.jpg|Steam locomotive no. 7008 (series 7000) of the NS with carriages along the platform of the Bovenkerk station.

File:HUA-166294-Afbeelding van de stoomlocomotief nr. 7009 (serie 7000) van de N.S. in de locomotiefloods te Uithoorn.jpg|Steam locomotive no. 7009 (series 7000) of the NS in the locomotive shed in Uithoorn.

File:Netherlands, Zijl (2).png|A train with an NS 7000 on the swing bridge over the Zijl near Leiden; circa 1930.

Sources