Messrs. Beyer, Peacock & Co. Ltd.
Gorton Foundry, Liverpool Road, Manchester
2-4-0 Bissell-truck Tank Locomotives, 3ft Narrow Gauge
Design Changes - 1905

           No.10 G H WOOD Works No. 4662 Built 1905
           No.11 MAITLAND Works No. 4663 Built 1905

 

Description:
The requirements for the combined IOMR/MNR/FR system, in particular the new Douglas/Ramsey route, meant that a larger design of locomotive than that already in service was necessary to maintain competition between the IOMR and the Manx Electric Railway.  The basic criterion was for an engine which could carry sufficient coal and water to run non-stop from Douglas to Ramsey.  The outcome from Beyer Peacock was simply an enlarged version of their 'standard' design.

Other than for the enlarged upright smokebox and enlarged boiler, tanks and bunker, a cursory glance at these new engines when new would not have revealed any differences of significance.  It would need closer inspection to identify the detailed changes which Beyer Peacock were now incorporating into their engines.  The driving and coupled wheels each had one extra spoke and a cast-in balance weight.  The larger pony truck, open motion bracket and larger crosshead introduced with Engine No.8 were carried over into the 'new' design.

Place the new engines next to their elder sister Douglas and they were quite simply "bigger" - longer, wider, taller.  Although dimensionally on paper there was not a great difference, visually they were much bigger.

Specification Changes:  

Main Frame Length: 
    Driving Axle to Coupled Axle		 20ft 4.75in (+ 3in) 
6ft 6in (+ 3in)
Buffer Length: 7' 0" (+ 3")
Boiler: 
    Diameter 
    Centre Line from Rail 
    Firebox Length 
    Pressure
3ft 3in (+ 4.25in) 
5ft 2in (+ 4in) 
5ft 0in (+ 7in) 
160PSI
Wheels:
    Driving / Coupled
    Balance Weights
12 Spoke
Cast-in Crescent Shape
Side Tanks:
     Height
    Length
    Width
    Capacity
    Inspection Plates
3' 0" (+ 6")
10' 6" (+ 3")
1'  3.75" (- 1.25")
480 gallons (+ 95)
Round-ended - mid tank locale
Clearances:
     Chimney Top to Rail
    Cab Roof from Rail
    Width over Platforms
    Width over Tanks
    Width over Running Boards
9' 10" (+ 4")
9' 7.625" (+ 2")
6' 11" (+ 5")
6' 5" (+5")
5' 2" (+ 4")
Smokebox/Chimney:
     Construction
    Alignment
    Chimney
Larger Diameter/all riveted
Upright
Beyer Pattern 2' 8.75" (- 3")
Fittings:
     Injector Overflow Pipe
    Whistle
Through Side Tank/Footplate
Medium pattern - deeper tone
ID Plates:
     Maker's
    Name
Cab side smaller pattern
Side Tank - middle
Handrails:
     Boiler
Lower level thru tank brackets
to Cab frontplate
Weight: 20 tons 10cwt

 

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