Comparison of N GP40 EMD hood unit models


Manufacturer	Bachmann USA	Mehano	Bachmann USA	Atlas	Atlas	Atlas	Bachmann USA
Year model introduced	1968	1969	1987	1996	2003	2018	2018
DCC Capability	DCC compatible but no socket	DCC incompatible	DCC compatible but no socket	DCC compatible but no socket	DCC Ready - Manufacturer specific decoder(s)	DCC Ready - Manufacturer specific decoder(s)	DCC Ready - Manufacturer specific decoder(s)
Mechanical
Body Construction	No	No	No	Plastic with metal parts	Plastic with metal parts	Plastic with metal parts	No
Chassis construction	No	No	No	Diecast	Diecast	Diecast	No
Loco-driven wheels (number of)	No	No	No	8 wheels	8 wheels	8 wheels	No
Minimum radius	No	No	No	Radius 2	Radius 2	Radius 2	No
Coupling socket/mounting
Non-NEM socket	No	No	No	Yes	Yes	Yes	No

Coupling type	No	No	No	Knuckle Coupling	Knuckle Coupling	Knuckle Coupling	No
Weighting (to assist adhesion)
Within body	No	No	No	Yes	Yes	Yes	No
Within chassis	No	No	No	Yes	Yes	Yes	No

Separating the body from the chassis	No	No	No	Body clips off from chassis	Body clips off from chassis	Body clips off from chassis	No
Electrical
Motor type	No	No	No	5-pole with two flywheels	5-pole with two flywheels	5-pole with two flywheels	No
Motor location	No	No	No	Centre of chassis	Centre of chassis	Centre of chassis	No
Power collection	No	No	No	2 rail DC	2 rail DC	2 rail DC	No
Working lights
Directional headlights & tail lights	No	No	No	Yes	Yes	Yes	No

Pickups	No	No	No	All wheels	All wheels	All wheels	No
DCC speaker	No	No	No	No provision for speaker	No provision for speaker	No provision for speaker	No
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