Comparison of OO 4-6-2 Class 7MT Britannia BR models

Tri-ang OO 4-6-2 Class 7MT Britannia BR Hornby OO 4-6-2 Class 7MT Britannia BR Hornby OO 4-6-2 Class 7MT Britannia BR Hornby OO 4-6-2 Class 7MT Britannia BR
Manufacturer Tri-ang Hornby Hornby Hornby
Year model introduced 1960 1981 2000 2006
DCC Capability DCC compatible but no socket. Complete rewire required - OO Motor fitted but no DCC socket. Ringfield motor DCC Ready. 8-pin socket DCC Ready. 8-pin socket
Detailing
Bodyshell - factory-fitted separate details
Handrails No Yes
Yes
No
Pipe work No No Yes
No
Regulator linkage No Yes
Yes
No
Safety valves - turned brass Yes
Yes
Yes
No
Smoke deflectors Yes
No No No
Tender ladder No No Yes
No
Whistle Yes
Yes
Yes
No
Chassis/underframe detail
Brake rigging chassis No No Yes
No
Cab, footplate & interior detail
Glazing No No Yes
No
Tender
Has easy-to-use coupling to loco Yes
Yes
Yes
No
Wheel "aesthetics"
Chemically-blackened Yes
Yes
Yes
No
Nickel-plated No Yes
Yes
No
Bufferbeam detail (pre-fitted)
Sprung buffers No No Yes
No
Bufferbeam detail (in detailing pack)
Pipework (for rear) No No Yes
No
Mechanical
Chassis construction Diecast
Diecast
Plastic & metal
No
Loco-driven wheels (number of) 2 wheels
None
None
No
Minimum radius Radius 1
Radius 2
Radius 2
No
Coupling socket/mounting
Fixed Yes
Yes
Yes
No
Coupling type Tension lock
Tension lock
Tension lock
No
Weighting (to assist adhesion)
Within tender No Yes
Yes
No
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
Electrical
Motor type 3-pole
Ringfield
Ringfield
No
Motor location Locomotive
Tender
Tender
No
Power collection 2 rail DC
2 rail DC
2 rail DC
No
Pickups 2 out of 3 axles
No No No
DCC speaker No provision for speaker
No provision for speaker
No provision for speaker
No
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