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35005 - SR Merchant Navy Class ‘Canadian Pacific’

Status Under Overhaul

Notes

Merchant Navies were known for their excellent steaming ability, largely thanks to the Bulleid boiler, and ran very smoothly at high speeds. The innovations originally applied to the class, such as chain driven drives and air smoothed casing, were removed during rebuilding and this cured many ills. However, the locomotives did suffer from a number of issues throughout their careers such as being prone to wheel slip, so careful handling was often required.

Nick named 'Can Pac', she took part in the Rugby trials of 1952.

In the last days of steam on the Southern region, Merchant Navies regularly broke the magical 100mph. It is also said that 'unofficially', a Merchant Navy went faster than 126.5mph, therefore beating the world steam record held by A4 'Mallard', but this has never been proven. However, it is fair to say that crews did push the envelope in the final years of steam and the Merchant Navy class leant themselves well to very fast running.

Can Pac moved to Eastleigh Works via rail on Thursday 22nd September 2011, where she was stripped for assessment of works and costing. Since this time and following a successful bid from the Heritage Lottery Fund the overhaul has been started alongside a large outreach project.

More information and pictures can be found here and to find out ways to donate funds to help us restore CanPac into running order, please click here.

Details

Built at
Eastleigh Works
Build year
December 1941, rebuilt May 1959
Classification
8 passenger
Entered service
1941
Designer
O.V.S Bulleid
Mileage
976,806
Owner
MHRPS
Region
Southern
Total built of class
30
Withdrawn
October 1965

Technical

Cylinders
3
Cylinder size
18" x 24"
Driving wheel diameter
6' 2"
Fire grate
48.5 sg ft
Max boiler pressure
250 psi
Total length
71' 7"
Tractive effort
33495 ibf at 85% boiler pressure
Tender coal capacity
5 tons
Tender water capacity
6000 gallons
Wheel arrangament
4-6-2
Valve gear
Walschaerts