Sutton's Locomotive Workshop British Railways Sulzer Type 2 Operating Manual - page 13

4. Model description

This model will give you many years of reliable operation if it is handled with 

care and periodically inspected and serviced. It has been created as a working 

replica for adult modellers and collectors, and should not be regarded as a toy. 

The standard model is intended to operate off conventional 12V direct current, 

supplied from a model railway controller. A decoder blanking plug is fitted. 

Digital sound versions feature a ZIMO decoder connected via the PluX22 

(NEM 658) connection and require a DCC control system for full functionality.

Fine detail - handle with care

The model comprises 350 individual components, all of which have been painstakingly 

hand assembled. A range of different materials have been utilised including injection-

moulded plastics plus cast and photo-etched metals. The high number of parts is in 

contradiction to the recent trend towards simplification, and is a direct result of the 

quest for greater detail. Many parts are fragile and if the model is handled, it should 

be done so with great care. We cannot be held responsible for any damage during use.

Designed for smooth operation

A die-cast zinc alloy metal chassis has been employed for superior adhesive weight 

and houses our smooth-running ‘Black Cat’ five-pole motor. The centrally-mounted 

motor, mated to two brass flywheels, supplies movement via carden shafts running 

to both bogies. The tolerances and free-running of any drive-train have a dramatic 

impact on responsiveness. Our requirement has therefore resulted in a low-friction 

specification which comprises worm reduction drives feeding spur gears linked to all 

axles. These are housed in a machined metal gearbox, designed to avoid any twisting 

and binding problems that are common with deformed or less-than-rigid plastic 

components. All axles run in lightly lubricated stepped brass bearing bushes.

Minimum recommended radius

The wheelsets nominally provided are set for ‘OO’ (16.5mm) gauge track. The model 

will run over commercial track systems down to a minimum radius of 16 inches 

(400mm) but, due to the finescale RP25 wheel profile, more satisfactory running will 

be achieved over curved track formations of a larger radius. The use of this locomotive 

is not recommended on ‘vintage’ or coarse-scale trackwork. 

Good haulage capability 

The mechanism provides a haulage capacity that meets most demands. Remember 

that the rolling resistance of stock varies considerably. Because of the deliberate 

omission of ‘traction tyres’, please do not expect performance to match that of older 

models. Tests have shown this model to be easily capable of hauling over 14 modern 

bogie carriages on level track and seven carriages up a 4% gradient.

5. Display and set-up

The model is supplied in its own display case which also acts as secure packaging 

during transit. This case has been provided for collectors who may wish to display the 

locomotive as part of a larger collection or perhaps as an individual executive desk 

feature. You will note that by the use of three flangeways, this base accepts wheels set 

to ‘OO’, ‘EM’ or ‘P4’ gauges. 

To extract the model from the case, lift off the transparent cover and remove the 

plastic blister support and protective polythene sheet. Undoing the two long mounting 

screws from the underside of the base will released it from the plinth.

As supplied (in display mode), the model has fully detailed bufferbeams with 

representations of the screw-link couplings and various brake hoses, control cables 

and ladders. To run with the UK ‘tension lock’ system, please fit the additional parts 

as supplied with the packaging: The coupling plugs into a right-angle NEM 362 

pocket that, in turn, is seated in the coupling apparatus behind the bufferbeam. A 

hidden kinematic movement system (in the chassis) is employed that automatically 

extends the coupling as the vehicle enters a curve. 

Note: To work effectively and reliably it may be necessary to remove or cut away any 

pipes or detail that restrict free movement of the ‘tension lock’ coupling.  

SLW Class 24 Operating Manual   

                                                                                            Page 25

Page 24   

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