Steamtrucks & -busses

This page is dedicated to a project which took place from 1930 until 1936 where engineers from Henschel und Sohn worked with Warren Doble on developing steam installations for use in road and rail vehicles.

This page should be seen as a global overview over the project whereas not all the details are not known at this time and as a starting point for further investigation.

The Project

In 1930 Henschel und Sohn and Borsig(Berlin) obtained a licence for using the patents of Warren and Abner Doble for use in road and rail vehicles. From 1932 until 1934 Warren Doble worked in Kassel with Richard Roosen and other engineers of Henschel und Sohn research and development department, called TB4 ”Studienburo”.

Warren brought Doble F31 with him when he started work in Kassel and Oscar Henschel bought Doble F35.

After a period of research the first busses were sold to Elberfelder Bahnen and Kraftverkehr Sachen AG

Over time more busses and trucks were build, the biggest order came from the Deutsche Reichsbahn which ordered 10 trucks which were used for delivering goods from railway depot Kassel

The Vehicles

This is a list of vehicles which were part of this project.

Doble F31

build on a Buick model 60 sedan in 1930, destroyed in an airraid during WW2.

Doble F35

upgraded from Chassis E12 by William Besler, destroyed in an airraid in WW2.

Delivered as a chassis, body built by Erdmann & Rossi, Berlin.

Sentinel S6

built in 1935 wit serialnumber 9196, used for many years as a mobile testing platform, was fitted with a mechanical stoker.

Steam Launch

built in 1933 as a testing platform

Bus for Elberfelder Bahnen Wuppertal

used from 1933 until 1942, then decommissioned due to fuel shortages, converted to front steer and rear mounted boiler in 1936.

Bus for Kraftverkehr Sachsen AG

built in 1933/34

Truck for Wickuler-Kupper-Brauerei, Elberfeld (Wuppertal)

Truck for Thuringia-Brauerei August Schmidt Muhlhausen

10 trucks for Deutsche Reichsbahn

built in 1933, two diffent cabversions are known, used from depot Kassel.

Truck for Kraftverkehr Nordmark AG Altona

triple-axle truck with 1 steam engine on each rear axle, built in 1934, ran between Hamburg and Berlin, decommissioned in 1937

Bus for Bielefelder Stadtwerke

delivered in 1935 and decommissioned in 1936 due to poor performance related to the use of the wrong fuel and increasing cost of fuel

Bus for Kasseler Omnibus Gesellschaft

built in 1935, converted to dieselmotor

Bus for Omnibusbetrieb der Bremer Vorortbahnen

built in 1936, converted to dieselmotor


Here is a list of sources i currently have in my possession.

jaar van uitgave bron Naam Auteur ISBN
1934 Neue Dampffahrzeuge Zeitung Verein Deutsche Ingineure Roosen en Imfeld
1934 “New Steam Driven Vehicles” Steam Car Developments & Steam Aviation
1934 Der Dampfomnibus, Verkehrstechnik Uhlig, H.
1935 Der Henschel Dampflastwagen, Organ fur Fortschritte des Eisenbahnwesens Organ fuer die Fortschritte des Eisenbahnwesens Schleifenheimer, H.
1935 125 Jahre Henschel. 1810-1935
1937 Leichte Dampfantriebe an Land, zur See, in der Luft. Münzinger, Friedrich
1941 Hochdruck-Kleinkessel mit Zwangdurchlauf fuer ortsfeste Anlangen Zeitung Verein Deutsche Ingineure Roosen, R
1943 Versuche an einem kohlegefeuerten Dampflastwagen Automobiltechnische Zeitschrift Rüggeberg, G
1944 The Modern Steam car and its background + supplement Clymer
1946 B.I.O.S final report 1748 Fitton, A. and Sharpe, G.C.H.
1946 The Steam lorry, Comprehensive German Tests on a Vehicle of British Design Automobile Engineer, March 1946 pagina 117 -123 Nott, R.H.P.
1955 Steam Road Vehicles and Railcars in Germany, Chapter 3, Steam Busses, Lorries and Railcars By Henschel & Sohn, of Kassel Walton, J.N.
1960 Henschel Heute, 150 Jahre Henschel
1975 The Undertype Steam Road Waggon Maurice Kelly 978-0900404160
1976 Ein Leben fuer die Lokomotieve Roosen, R 3-440-04309-6
1996 Alle Lastwagen von Henschel 1925-1967 Hesse, KH; H.A. Bauer 3-926071-12-5
1996 “Volldampf statt vollgas” Last und Kraft, 4/96 Gottwaldt, A
1999 Das Lastwagen-Album, Henschel Regenberg, B 9783861332046
2001 Neuartige Dampflokomotiven von Henschel in Kassel: Das Lebenswerk des Ingenieurs Richard Roosen Zeitschrift des Vereins für hessische Geschichte (ZHG) Band 106 Gottwaldt, A
2006 “Henschel steam road vehicles” Steaming 2006 Regenberg, B
2009 “Henschel Steam Lorries, Buses and Railcars from British Intelligence” The Steam Automobile Bulletin
2012 Henschel: Lastwagen 1925-1974 (Typenkompass) Gebhardt, W.H. 978-3-613-03403-7
2012 Doble shippinglist.doc James D. Crank Crank, James D.
2016 Dampfselbstfahrer im deutschsprachigen Raum Schmidt-Römer, Dr.-Ing. H.


Based on the research i already have done i am looking for the following sources

  1. “Betriebserfahrungen mit dem ersten Henschel-Dampfautobus”, Henschel -Hefte , Marz 1934, 3. Kraftwagen-Sondernummer, S.6.
  2. “Der Dampfantrieb fur Strassenfahrzeuge”, Henschel-Hefte, Februar 1935, 4, Kraftwagen-Sondernummer, S.16.
  3. “Doble Developments, The use of Steam at high pressure and temperatures in small steam power plants “ Light steam Power feb 1962, page 24
  4. Doble Steam Cars – Buses, Lorries And Railcars by J. N. Walton 1970, 2e editie in met correcties verschenen in 1975
  5. Fünf Jahrtausende Radfahrzeuge: 2 Jahrhunderte Straßenverkehr mit Wärmeenergie. Über 100 Jahre Automobile Rudolf Krebs
  6. Oldtimer Heft / Magazin Sonderheft 2 Maart 1986
  7. From BIOS report 1748, appendix 1 Documents Evacuated, BIOS/DOCS/2651/2046/1 until BIOS/DOCS/2651/2046/17, these are drawings, documents and reports which are the basis of the BIOS report.

If you know of other publications which cover this project in any way i would like to know.


if you wish to get in touch with me in regard to this research, i can be reached through the Contactform here.

Alles over Hanomag, Henschel & Hanomag-Henschel