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Comparison of OO 4-6-0 Class 4073 Castle GWR models

Hornby Dublo OO 4-6-0 Class 4073 Castle GWR Airfix GMR (Great Model Railways) OO 4-6-0 Class 4073 Castle GWR Airfix GMR (Great Model Railways) OO 4-6-0 Class 4073 Castle GWR Hornby OO 4-6-0 Class 4073 Castle GWR Hornby OO 4-6-0 Class 4073 Castle GWR
Manufacturer Hornby Dublo Airfix GMR (Great Model Railways) Airfix GMR (Great Model Railways) Hornby Hornby
Year model introduced 1957 1979 2005 2010 2023
DCC Capability DCC incompatible Motor fitted but no DCC socket. Ringfield motor DCC Ready. 8-pin socket DCC Ready. 8-pin socket DCC Ready. 21-pin socket
Detailing
Bodyshell - factory-fitted separate details
Chimney No No Yes
Yes
Yes
Coal load(s) No No No Yes
Yes
Drain cocks No No No Yes
Yes
Handrails Yes
No Yes
Yes
Yes
Injector No No No Yes
Yes
Injector pipework No No No Yes
Yes
Lamp irons No No No Yes
Yes
Nameplates - etched - pre-fitted No No No Yes
Yes
Numberplates - plastic - require fitting No No No Yes
Yes
Pipe work No No No Yes
Yes
Regulator linkage No No No Yes
Yes
Release valve No No No Yes
Yes
Reverser Yes
No Yes
No No
Safety valve Yes
No Yes
Yes
Yes
Smokebox door dart No No No Yes
Yes
Smokebox door numberplate No No No Yes
Yes
Tender handbrakes No No Yes
No No
Tender water tank No No No Yes
Yes
Whistle No No Yes
Yes
Yes
Whistle - turned brass Yes
No No No No
Chassis/underframe detail
Brake rigging chassis No No Yes
No No
Correct-thickness "stamped" rods No No No Yes
Yes
Fluted connecting rods with oily finish No No No Yes
Yes
Footsteps No No No Yes
Yes
Inside valve gear No No No Yes
Yes
Lubricator mechanism No No No Yes
Yes
Pipework No No No Yes
Yes
Sanding gear No No No Yes
Yes
Sprung front bogie No No No Yes
Yes
Cab, footplate & interior detail
Detailed & painted No No No Yes
Yes
Fallplate No No No Yes
Yes
Glazing No No Yes
Yes
Yes
Tender
Has easy-to-use coupling to loco No No Yes
No No
Has enclosure for speaker No No No Yes
Yes
Houses digital decoder No No No Yes
Yes
Houses PCB No No No Yes
Yes
Permanently coupled to locomotive Yes
No No No No
Wheel "aesthetics"
Chemically-blackened No No No Yes
Yes
Coloured-plastic No No Yes
No No
Nickel-plated No No Yes
No No
Painted Yes
No No Yes
Yes
Bufferbeam detail (pre-fitted)
Pipework - pre-fitted to front No No Yes
Yes
Yes
Pipework - pre-fitted to rear No No Yes
Yes
Yes
Sprung buffers No No No Yes
Yes
Bufferbeam detail (in detailing pack)
Cosmetic coupling No No No Yes
Yes
NEM Couplings No No No Yes
Yes
Mechanical
Body Construction No No No Plastic with metal parts
Plastic with metal parts
Chassis construction Diecast
No Diecast
Diecast
Diecast
Loco-driven wheels (number of) 2 wheels
No 2 wheels
2 wheels
2 wheels
Minimum radius Radius 1
No Radius 2
Radius 2
Radius 2
Coupling socket/mounting
Fixed Yes
No No No No
NEM pockets No No No Yes
Yes
Non-NEM socket No No Yes
No No
Coupling type Peco style
No Tension lock
Tension lock
Tension lock
Weighting (to assist adhesion)
Within boiler No No No Yes
Yes
Within chassis Yes
No No Yes
Yes
Within tender No No Yes
Yes
Yes
Separating the body from the chassis Secured with one or more screws
No Secured with one or more screws
Secured with one or more screws
Secured with one or more screws
Electrical
Motor type 3-pole
No Ringfield
5-pole with flywheel
5-pole with flywheel
Motor location Locomotive
No Locomotive
Locomotive
Locomotive
Power collection 2 rail DC
No 2 rail DC
2 rail DC
2 rail DC
Pickups Driving and trailing wheels only
No Locomotive only
Driving wheels and tender wheels
Driving wheels and tender wheels
DCC speaker No provision for speaker
No No provision for speaker
Provision for 28mm round speaker
Provision for 28mm round speaker
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