Central Vermont class U-1a

The Central Vermont operated four 4-8-2 “Mountain” locomotives which had been ordered by the parent Canadian National and leased to this railroad. Built in May 1927 by ALCO-Schenectady, they had the works numbers 67335 to 67338 and got the running numbers 600 to 603. With a driver diameter of 73 inches, they were intended for passenger trains like the “Ambassador”, but sometimes also had to haul freight trains. The 384 square feet of the firebox included a combustion chamber of 54 inches in length, 14 square feet of arch tubes and two thermic syphons with a total of 76 square feet. 

They featured Walschaerts valve gear, a stoker built by the Standard Stoker Co. and a Coffin feed water heater. The boiler pressure was later raised from 200 to 210 psi. Originally they had tenders which carried 10,000 gallons of water and 14 tons of coal. Later, they had new or modified tenders with only 9,550 gallons of water, but 18 tons of coal. Three were retired in 1956 and the fourth one in 1957.