Comparison of OO 4-6-2 Class A3 LNER models


Manufacturer	Trix	Tri-ang	Hornby	Hornby	Hornby	Hornby	Hornby	Hornby	Hornby
Year model introduced	1968	1968	1981	1998	2005	2005	2022	2023	2023
DCC Capability	DCC incompatible	DCC incompatible	Motor fitted but no DCC socket. Ringfield motor	DCC compatible but no socket	DCC Ready. 8-pin socket	DCC Ready. 8-pin socket	DCC Ready. 8-pin socket	DCC Ready. 8-pin socket	DCC Ready. 21-pin socket
Detailing
Bodyshell - factory-fitted separate details
Boiler supports	No	No	No	No	No	No	Yes	Yes	Yes
Chimney	No	No	No	No	No	No	Yes	Yes	Yes
Coal load(s)	No	No	No	No	No	No	Yes	Yes	Yes
Coal rails	No	No	No	No	No	No	Yes	No	Yes
Dome	No	No	No	No	No	No	Yes	Yes	Yes
Drain cocks	No	No	No	No	No	No	No	Yes	No
Gangway corridor connectors	No	No	No	No	No	No	Yes	Yes	Yes
Handrails	Yes	No	Yes	No	No	No	Yes	Yes	Yes
Injector	No	No	No	No	No	No	Yes	No	Yes
Lamp irons	No	No	No	No	No	No	Yes	Yes	Yes
Lubricator mechanism	No	No	No	No	No	No	No	Yes	No
Nameplates - etched - pre-fitted	No	No	No	No	No	No	No	Yes	No
Nameplates - plastic - pre-fitted	No	No	No	No	No	No	Yes	No	Yes
Oil lubricators	No	No	No	No	No	No	No	Yes	No
Regulator linkage	No	No	No	No	No	No	Yes	Yes	Yes
Release valve	No	No	No	No	No	No	No	Yes	No
Reverser	No	No	No	No	No	No	Yes	Yes	Yes
Roof hatch	No	No	No	No	No	No	No	Yes	No
Safety valve	No	No	No	No	No	No	Yes	Yes	Yes
Safety valves - turned brass	Yes	No	Yes	No	No	No	No	No	No
Smoke deflectors	No	No	No	No	No	No	No	Yes	No
Smokebox door dart	No	No	No	No	No	No	Yes	Yes	Yes
Smokebox door numberplate	No	No	No	No	No	No	Yes	Yes	Yes
Tender ladder	No	No	No	No	No	No	Yes	No	Yes
Vents	No	No	No	No	No	No	Yes	No	Yes
Water tank caps	No	No	No	No	No	No	No	Yes	No
Whistle	No	No	No	No	No	No	Yes	Yes	Yes

Chassis/underframe detail
Brake rigging chassis	No	No	No	No	No	No	Yes	Yes	Yes
Correct-thickness "stamped" rods	No	No	No	No	No	No	Yes	Yes	Yes
Fluted connecting rods with oily finish	No	No	No	No	No	No	Yes	Yes	Yes
Footsteps	No	No	No	No	No	No	Yes	Yes	Yes
Inside valve gear	No	No	No	No	No	No	Yes	Yes	Yes
Lubricator mechanism	No	No	No	No	No	No	No	Yes	No
Sanding gear	No	No	No	No	No	No	No	Yes	No
Sprung front & rear pony trucks	No	No	No	No	No	No	No	Yes	No
Sprung front bogie	Yes	No	No	No	No	No	Yes	No	Yes

Cab, footplate & interior detail
Crew communication doors	No	No	No	No	No	No	No	Yes	No
Detailed & painted	No	No	No	No	No	No	Yes	Yes	Yes
Fallplate	No	No	No	No	No	No	Yes	Yes	Yes
Footplate doors	No	No	No	No	No	No	Yes	No	Yes
Glazing	Yes	No	No	No	No	No	Yes	Yes	Yes
Seating	No	No	No	No	No	No	Yes	No	Yes

Tender
Has easy-to-use coupling to loco	Yes	No	Yes	No	No	No	Yes	Yes	Yes
Has enclosure for speaker	No	No	No	No	No	No	Yes	Yes	Yes
Houses digital decoder	No	No	No	No	No	No	Yes	Yes	Yes
Houses PCB	No	No	No	No	No	No	Yes	Yes	Yes

Wheel "aesthetics"
Chemically-blackened	No	No	Yes	No	No	No	Yes	Yes	Yes
External brake discs	No	No	No	No	No	No	No	Yes	No
Metal-pin point bearings	No	No	No	No	No	No	Yes	No	Yes
Nickel-plated	Yes	No	Yes	No	No	No	No	No	No
Painted	Yes	No	Yes	No	No	No	Yes	Yes	Yes
Traction tyres	Yes	No	No	No	No	No	No	No	No

Bufferbeam detail (pre-fitted)
Cosmetic screw link coupling	No	No	No	No	No	No	Yes	No	Yes
Lifeguard	No	No	No	No	No	No	No	Yes	No
Pipework - pre-fitted to front	No	No	No	No	No	No	Yes	Yes	Yes
Pipework - pre-fitted to rear	No	No	No	No	No	No	Yes	Yes	Yes
Sprung buffers	No	No	No	No	No	No	Yes	Yes	Yes

Bufferbeam detail (in detailing pack)
Cosmetic coupling	No	No	No	No	No	No	No	Yes	No
NEM Couplings	No	No	No	No	No	No	No	Yes	No

Detail pack also contains...
Brake rigging	No	No	No	No	No	No	No	Yes	No
Crew	No	No	No	No	No	No	No	Yes	No
Locomotive plaque	No	No	No	No	No	No	No	Yes	No
Spare wheelset	No	No	No	No	No	No	Yes	No	Yes

Mechanical
Body Construction	No	No	No	No	No	No	Plastic with metal parts	Diecast	Plastic with metal parts
Working cosmetic features
Roof vent	No	No	No	No	No	No	Yes	No	Yes

Chassis construction	Diecast	No	Diecast	No	No	No	Diecast	Heavy diecast	Diecast
Loco-driven wheels (number of)	2 wheels	No	None	No	No	No	2 wheels	6 wheels	6 wheels
Minimum radius	Radius 1	No	Radius 2	No	No	No	Radius 2	Radius 2	Radius 2
Coupling socket/mounting
Fixed	Yes	No	Yes	No	No	No	No	No	No
NEM pockets	No	No	No	No	No	No	Yes	Yes	Yes

Coupling type	Peco style	No	Tension lock	No	No	No	Tension lock	Tension lock	Tension lock
Weighting (to assist adhesion)
Within body	No	No	No	No	No	No	Yes	Yes	Yes
Within boiler	No	No	No	No	No	No	No	Yes	No
Within chassis	Yes	No	No	No	No	No	Yes	Yes	Yes
Within tender	Yes	No	Yes	No	No	No	No	Yes	No

Separating the body from the chassis	Secured with one or more screws	No	No	No	No	No	Secured with one or more screws	Secured with one or more screws	Secured with one or more screws
Electrical
Motor type	5-pole (standard)	No	Ringfield	No	No	No	5-pole (standard)	5-pole with flywheel	5-pole (standard)
Motor location	Locomotive	Locomotive	Tender	No	No	No	Locomotive	Locomotive	Locomotive
Power collection	2 or 3 rail DC	No	2 rail DC	No	No	No	2 rail DC	2 rail DC	2 rail DC
Working lights
Firebox flicker	No	No	No	No	No	No	Yes	No	No
Headlamps	Yes	No	No	No	No	No	No	No	No

Pickups	No	No	No	No	No	No	Driving wheels and tender wheels	Driving wheels and tender wheels	Driving and leading wheels only
DCC speaker	No provision for speaker	No	No provision for speaker	No	No	No	Provision for 28mm round speaker	Provision for a speaker (dimensions unknown)	Provision for 28mm round speaker
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Comparison of OO 4-6-2 Class A3 LNER models

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