Steamboat Thor from Växjö

Swedish Steamboats


Steamboat Thor from Växjö

Steamship Thor
 Built in 1887 at Bergsunds Mek. Verkstad, Stockholm Sweden
Call sign Measures in meter Tonnage Engine
kW
Speed
Knots
Length Beam Draught Gross Net
SFB-6090 17.15 3.56 1.09     4.4 8
 Wood- and coal-fired fire tube boiler with one furnace. 6 bar.
 Single cylinder enginewith Stephenson's reversing link motion and an expansion slide valve.

 Refurbished in 1971 at Ekenäs south of Kalmar Sweden
Signal
letters
Measures in meter Tonnage Engine
kW
Speed
Knots
Length Beam Draught Gross Net
SFB-6090 16.48 3.75 1.54 16.25   30 9
 Wood- and coal-fired fire tube boiler with one furnace. 6 bar.
 Single cylinder engine with Stephenson's reversing link motion and an expansion slide valve.
The measures differ so much and the hull is all-welded so I guess this is a copy of the original boat. In a boat from 1887 it should be at least some rivets left.

Steam boat Thor

 

The engine onboard SL Thor

Steam boat Thor's engine room
The entire engine room is a space behind a fence where the engineer operates the engine and the boiler. At the lower part of the picture is the main steam pipe from the boiler to the engine.
It's a good bet that the steam pipe was red-panted in the old days.

 

Steam boat Thor boiler front The steam boiler

  The fire tube boiler with one furnace.
  Just ignited, one hour before departure.




Link systemExpanssion slide valve

Stephenson's reversing link motion and the expansion slide valve rod.
A. The normal slide valve.
B. The expansion slide valve.
The expansion slide valve's excenter is 180° before the crank and therefore the expansion slide valve closes the steam passage to the cylinder before the normal slide does. Turning the expansion slide rod will adjusted the plates in the expansion slide valve to increase or deceases the expansion.


Steamboat Thor from Växjö

© 2007 Lars Josefsson  Steamships