Comparison of OO Class 20 models

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Comparison of OO Class 20 models


Manufacturer	Hornby Dublo	Hornby Dublo	Lima	Bachmann Branchline	Lima	Bachmann Branchline	Bachmann Branchline
Year model introduced	1958	1977	1984	2004	2008	2008	2021
DCC Capability	DCC incompatible	DCC incompatible	DCC compatible but no socket. Pancake motor	DCC Ready. 8-pin socket	DCC Ready. 8-pin socket	DCC Ready. 21-pin socket	DCC Ready. PLuX22 socket
Bodyshell
Bodyshells represented (of Prototypes)
Class 20 - Headcode boxes	No	No	Yes	Yes	Yes	Yes	No
Class 20 - Headcode discs	Yes	Yes	Yes	Yes	Yes	Yes	No
Class 20/3 - Flat front with WiPac headlights	No	No	No	No	No	No	Yes

Detailing
Bodyshell - factory-fitted separate details
Body ladders	Yes	Yes	No	No	No	No	No
Door handles	No	No	No	No	No	No	Yes
Fan Grill (etched)	No	No	No	Yes	No	Yes	Yes
Fan(s)	No	No	No	Yes	No	Yes	Yes
Handrails	Yes	Yes	Yes	Yes	Yes	Yes	Yes
High intensity headlight	No	No	Yes	No	Yes	Yes	No
Jumper cables	No	No	No	No	No	Yes	No
Lamp irons	Yes	No	No	Yes	No	Yes	Yes
Nameplates - etched - require fitting	No	No	No	No	No	Yes	No
Panel cover handles	No	No	No	No	No	No	Yes
Radio antenna	No	No	No	No	No	No	Yes
Side grilles (etched)	No	No	No	No	No	No	Yes
Tablet catcher equipment	No	No	No	Yes	No	Yes	No
Tablet catcher recess	No	No	No	Yes	No	Yes	No

Chassis/underframe detail
Battery box	No	No	Yes	Yes	Yes	Yes	Yes
Footsteps	No	No	No	Yes	No	Yes	Yes
Fuel tank	Yes	No	No	No	No	Yes	Yes
Pipework	No	No	No	No	No	Yes	Yes
Sanding gear	No	No	No	Yes	No	Yes	Yes

Bodyshell - separately-fitted details - in detailing pack (where applicable)
Headcode discs	No	No	No	Yes	No	Yes	No

Cab, footplate & interior detail
Detailed & painted	No	No	No	Yes	No	Yes	Yes
Glazing	Yes	No	Yes	Yes	Yes	Yes	Yes
Window wipers	No	No	No	Yes	No	Yes	Yes

Wheel "aesthetics"
Chemically-blackened	No	No	No	Yes	Yes	Yes	Yes
Nickel-plated	Yes	Yes	No	No	No	No	No
Painted	Yes	No	No	No	No	No	No
Traction tyres	Yes	Yes	Yes	No	Yes	No	No

Bufferbeam detail (pre-fitted)
Cosmetic coupling - hook only	Yes	No	Yes	Yes	No	Yes	Yes
Lifeguard	No	No	No	No	No	No	Yes
Pipework - pre-fitted to rear	No	No	No	No	No	No	Yes
Sprung buffers	No	No	No	Yes	No	Yes	Yes

Bufferbeam detail (in detailing pack)
Cosmetic coupling	No	No	No	Yes	No	Yes	Yes
NEM Couplings	No	No	No	No	No	No	Yes
Pipework (for front)	No	No	No	Yes	No	Yes	Yes
Pipework (for rear)	No	No	No	Yes	No	Yes	No
Snow plough	No	No	No	No	No	Yes	Yes

Mechanical
Body Construction	Plastic with metal parts	No	Plastic	Plastic with metal parts	Plastic	Plastic with metal parts	Plastic with metal parts
Chassis construction	Diecast	Diecast	Lightweight	Diecast	Lightweight	Diecast	Heavy diecast
Loco-driven wheels (number of)	4 wheels	4 wheels	4 wheels	8 wheels	4 wheels	8 wheels	8 wheels
Minimum radius	Radius 1	Radius 1	Radius 2	Radius 2	Radius 2	Radius 2	Radius 2
Coupling socket/mounting
Fixed	Yes	Yes	Yes	No	No	No	No
NEM pockets	No	No	No	Yes	Yes	Yes	Yes

Coupling type	Hornby Dublo/ Peco "Simplex" coupling	Tension lock	Tension lock	Tension lock	Tension lock	Tension lock	Tension lock
Weighting (to assist adhesion)
Within chassis	Yes	Yes	Yes	Yes	Yes	Yes	Yes

Separating the body from the chassis	Secured with one or more screws	Secured with one or more screws	Body clips off from chassis	Secured with one or more screws	Secured with one or more screws	Secured with one or more screws	Secured with one or more screws
Electrical
Motor type	3-pole	3-pole	Pancake	5-pole (standard)	3-pole	5-pole (standard)	5-pole with two flywheels
Motor location	1 bogie mounted	1 bogie mounted	1 bogie mounted	Centre of chassis	1 bogie mounted	Locomotive	Centre of chassis
Power collection	2 rail DC	2 rail DC	2 rail DC	2 rail DC	2 rail DC	2 rail DC	2 rail DC
Working lights
Cab light	No	No	No	No	No	No	Yes
Directional headlights & tail lights	No	No	No	No	No	No	Yes
Headlights (independent)	No	No	No	No	No	No	Yes
Tail lights (independent)	No	No	No	No	No	No	Yes

Pickups	Unpowered bogie only	Unpowered bogie only	Unpowered bogie only	All wheels	All wheels	All wheels	All wheels
DCC speaker	No provision for speaker	No provision for speaker	No provision for speaker	No provision for speaker	Provision for 28mm round speaker	Provision for 15x11mm rectangular speaker	Pre-fitted
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