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These notes are largely culled from the KLR website at http://www.kirkleeslightrailway.co.uk

1998 built 0-4+4-0t Hawk is a Kitson Meyer type articulated locomotive. It is based on a design by Andrew Barclay Sons & Co. Hawk was Brian Taylor's third locomotive for the KLR and the first to be entirely constructed in the Clayton West Workshops.

This substantial locomotive is the most powerful 15" gauge loco in the UK, if not the world.

0-4+4-0t Hawk on standby outside the depot at Clayton West. Note the chimney cap. April 11 2004
0-4+4-0t Hawk on standby outside the depot at Clayton West. Note the chimney cap. April 11 2004

A side on view of 0-4+4-0t Hawk Clayton West. Note the chimney in the coal bunker. Exhaust steam from the rear bogie goes straight to atmosphere providing no draught on the fire but a percentage is now used as clinker control steam. April 12 2004
A side on view of 0-4+4-0t Hawk Clayton West. Note the chimney in the coal bunker. Exhaust steam from the rear bogie goes straight to atmosphere providing no draught on the fire but a percentage is now used as clinker control steam. April 12 2004

Technical Specification:

Driving Wheel Diameter 14"
Cylinder Number 4
Cylinder Stroke

8"
Cylinder Bore 4"
Grate Area 3 ft²
Boiler Pressure 190 psi
Tractive Effort 4371lbs
Combustion System Simplified Gas Producer
Exhaust System Lempor with Kordina
Valvegear Walschaerts
Sanding Equipment Steam
Roller Bearings Main axleboxes, coupling and connecting rods, little ends

A general view of Hawk's cab. The driving controls are largely group on the right hand side. April 11 2004

A general view of Hawk's cab. The driving controls are largely group on the right hand side. April 11 2004

A closer view of the right hand side controls showing the regulator, reverser, brake valve and brake gauges amongst other controls. April 11 2004
A closer view of the right hand side controls showing the regulator, reverser, brake valve and brake gauges amongst other controls. April 11 2004

The drive for the mechanical lubrication on Hawk is taken from the expansion link. So on this engine the oil feed is not proportional to the valve travel. April 11 2004
The drive for the mechanical lubrication on Hawk is taken from the expansion link. So on this engine the oil feed is not proportional to the valve travel. April 11 2004

The rear chimney comes up through the coal bunker, below which is a small water tank feeding the left hand injector. As the exhaust goes straight to atmosphere the exhaust is often very wet as there is no mixing with the combustion gases to re-heat the exhaust steam. April 11 2004
The rear chimney comes up through the coal bunker, below which is a small water tank feeding the left hand injector. As the exhaust goes straight to atmosphere the exhaust is often very wet as there is no mixing with the combustion gases to re-heat the exhaust steam. April 11 2004

A close up of the big end, coupling rod and return crank on one of the bogies. The bearings with grease nipples are rollers. April 11 2004
A close up of the big end, coupling rod and return crank on one of the bogies. The bearings with grease nipples are rollers. April 11 2004

Hawk's firehole door opens out and down. This loco lacks the secondary air ducting of the other locos but does have a deflector plate on the fire side of the door. April 12 2004
Hawk's firehole door opens out and down. This loco lacks the secondary air ducting of the other locos but does have a deflector plate on the fire side of the door. April 12 2004

The cylinders on Hawk are acknowledged as somewhat restricting performance. As can be seen the valve diameter is not huge. April 12 2004
The cylinders on Hawk are acknowledged as somewhat restricting performance. As can be seen the valve diameter is not huge. April 12 2004

With less than ideal steam passages to the cylinders intermediate receivers have been fitted to each bogie. This is the large red item shown here. April 12 2004
With less than ideal steam passages to the cylinders intermediate receivers have been fitted to each bogie. This is the large red item shown here. April 12 2004

A general view of one cylinder and some of the motion. Most bearings visible in this shot are plain. April 12 2004
A general view of one cylinder and some of the motion. Most bearings visible in this shot are plain. April 12 2004

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