Comparison of OO 4-6-2 Class 8P Princess Royal LMS models

Tri-ang OO 4-6-2 Class 8P Princess Royal LMS Tri-ang OO 4-6-2 Class 8P Princess Royal LMS Hornby OO 4-6-2 Class 8P Princess Royal LMS Hornby OO 4-6-2 Class 8P Princess Royal LMS Hornby OO 4-6-2 Class 8P Princess Royal LMS Hornby OO 4-6-2 Class 8P Princess Royal LMS
Manufacturer Tri-ang Tri-ang Hornby Hornby Hornby Hornby
Year model introduced 1950 1970 1984 2001 2005 2019
DCC Capability DCC compatible but no socket. Complete rewire required - OO DCC compatible but no socket Motor fitted but no DCC socket. Ringfield motor DCC compatible but no socket DCC Ready. 8-pin socket DCC Ready. 8-pin socket
Detailing
Bodyshell - factory-fitted separate details
Body supports No No No No No Yes
Chimney No No No No No Yes
Handrails No No Yes
Yes
Yes
Yes
Injector No No No No No Yes
Injector pipework No No No No No Yes
Lamp irons No No No Yes
Yes
Yes
Pipe work No No No No No Yes
Regulator linkage No No No No No Yes
Release valve No No No No No Yes
Reverser No No Yes
Yes
Yes
Yes
Roof hatch No No No No No Yes
Safety valves - turned brass Yes
Yes
Yes
Yes
Yes
Yes
Smokebox door dart No No No Yes
Yes
Yes
Vents No No No No No Yes
Water scoop No No No No No Yes
Whistle - turned brass No No No Yes
Yes
Yes
Chassis/underframe detail
Brake rigging chassis No No Yes
Yes
Yes
No
Correct-thickness "stamped" rods No No No No No Yes
Fluted connecting rods with oily finish No No No No No Yes
Lubricator mechanism No No No No No Yes
Pipework No No No No No Yes
Sand boxes No No No No No Yes
Sanding gear No No No No No Yes
Sprung front bogie No No No No No Yes
Cab, footplate & interior detail
Detailed & painted No No No No No Yes
Footplate doors No No No No No Yes
Glazing No No No Yes
Yes
Yes
Tender
Has easy-to-use coupling to loco Yes
Yes
Yes
No No Yes
Has enclosure for speaker No No No No No Yes
Houses digital decoder No No No No No Yes
Houses PCB No No No No No Yes
Wheel "aesthetics"
Chemically-blackened No No No No No Yes
Coloured-plastic No No Yes
Yes
Yes
No
Metal-pin point bearings No No No No No Yes
Nickel-plated No No Yes
No No No
Painted No No Yes
No No Yes
Solid-spoked wheels Yes
Yes
No No No No
Bufferbeam detail (pre-fitted)
Cosmetic coupling - hook only No No No No No Yes
Lifeguard No No No No No Yes
Pipework - pre-fitted to front No No No No No Yes
Pipework - pre-fitted to rear No No No No No Yes
Sprung buffers No No No No No Yes
Bufferbeam detail (in detailing pack)
Pipework (for rear) No No Yes
No No No
Detail pack also contains...
Brake rigging No No No No No Yes
Mechanical
Body Construction No No No No No Plastic with metal parts
Working cosmetic features
Roof vent No No No No No Yes
Chassis construction Diecast
Diecast
Plastic & metal
Plastic & metal
Plastic & metal
Heavy diecast
Loco-driven wheels (number of) 2 wheels
2 wheels
None
2 wheels
2 wheels
6 wheels
Minimum radius Radius 1
Radius 1
Radius 2
Radius 2
Radius 2
Radius 2
Coupling socket/mounting
Fixed Yes
Yes
Yes
No No No
NEM pockets No No No Yes
Yes
Yes
Coupling type Tension lock
Tension lock
Tension lock
Tension lock
Tension lock
Tension lock
Weighting (to assist adhesion)
Within boiler No No No No No Yes
Within chassis No No No No No Yes
Within tender No No Yes
No No Yes
Separating the body from the chassis Secured with one or more screws
Secured with one or more screws
Secured with one or more screws
No No Secured with one or more screws
Electrical
Motor type 3-pole
X04
Ringfield
5-pole (standard)
5-pole (standard)
5-pole with flywheel
Motor location Locomotive
Locomotive
Tender
Locomotive
Locomotive
Locomotive
Power collection 2 rail DC
2 rail DC
2 rail DC
2 rail DC
2 rail DC
2 rail DC
Working lights
Firebox flicker No No No No No Yes
Pickups 2 out of 3 axles
2 out of 3 axles
No Driving wheels only
Driving wheels only
Driving wheels and tender wheels
DCC speaker No provision for speaker
No provision for speaker
No provision for speaker
No provision for speaker
No provision for speaker
Provision for 28mm round speaker
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