Compound Locomotives 85 



boiler has two water drums on either side 

 of the fire-box, and these are connected by 

 a series of tubes to a single upper steam 

 drum. 



It should be stressed here that Mr. Gresley 

 is after economical steaming capacity rather 

 than mere power increase. The heavy cost 

 of coal necessitates this step, and the general 

 Press in their announcements have rather 

 overlooked this important factor, and 

 stressed that " No. 10,000 " was for faster 

 trains, one paper even going so far as to 

 state that speeds of 100 miles per hour 

 were aimed at. Most certainly Mr. Gresley 

 has no such intentions, and we would wager 

 that no increase of speed will be found on 

 the L.N.E.R. because of this innovation in 

 locomotive design. 



The following are brief details of this 

 fine engine: diameter of driving wheels, 

 6 feet 8 inches; cylinders, (2) high-pressure, 

 12x26, (2) low pressure, 20x26 inches; 

 total weight of engine and tender, 166 

 tons (all on); length over buffers, 75 feet 

 4 inches. The engine was constructed at the 



