Comparison of OO Class 33 models

Lima OO Class 33 Heljan OO Class 33 Heljan OO Class 33 Lima OO Class 33 Heljan OO Class 33 Heljan OO Class 33 Heljan OO Class 33
Manufacturer Lima Heljan Heljan Lima Heljan Heljan Heljan
Year model introduced 1977 2005 2006 2010 2014 2019 2023
DCC Capability DCC compatible but no socket. Pancake motor DCC Ready. 8-pin 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
Bodyshell
Bodyshells represented (of Prototypes)
Class 33/0 - as built Yes
Yes
No Yes
Yes
Yes
No
Class 33/1 - push-pull fitted Yes
Yes
No No No No Yes
Class 33/2 - Hastings gauge body "Slim Jim" No No Yes
No No No Yes
Detailing
Bodyshell - factory-fitted separate details
Etched horn grille No No No No Yes
Yes
No
Fan Grill (etched) No Yes
Yes
No Yes
Yes
Yes
Fan(s) No No No No Yes
Yes
No
Handrails No Yes
Yes
No Yes
Yes
Yes
High intensity headlight Yes
Yes
Yes
No No Yes
Yes
Jumper cables Yes
Yes
No No No No No
Lamp irons No Yes
Yes
No Yes
Yes
Yes
Nameplates - etched - require fitting No No No No Yes
Yes
No
NRN (National Radio Network) Pod No No No No No Yes
No
Representation of internal equipment (behind grilles) No No No No Yes
Yes
No
Side grilles (etched) No Yes
Yes
No Yes
Yes
Yes
Chassis/underframe detail
Battery box Yes
Yes
Yes
Yes
Yes
Yes
Yes
Footsteps Yes
Yes
Yes
Yes
Yes
Yes
Yes
Fuel tank Yes
Yes
Yes
Yes
Yes
Yes
Yes
Pipework No Yes
Yes
No Yes
Yes
Yes
Sanding gear No No No No Yes
Yes
No
Speedometer cable No No No No Yes
Yes
No
Cab, footplate & interior detail
Detailed & painted No Yes
Yes
No Yes
Yes
Yes
Glazing Yes
Yes
Yes
Yes
Yes
Yes
Yes
Seating No No No No Yes
Yes
No
Window wipers No Yes
Yes
No Yes
Yes
Yes
Wheel "aesthetics"
Chemically-blackened No Yes
Yes
No Yes
Yes
Yes
Traction tyres Yes
No No Yes
No No No
Bufferbeam detail (pre-fitted)
Cosmetic buckeye coupling No Yes
Yes
No No No Yes
Cosmetic screw link coupling No Yes
Yes
No Yes
Yes
Yes
Electric train heating box/ pipes No No No No Yes
Yes
No
Lifeguard No Yes
Yes
No Yes
Yes
Yes
Multiple working sockets/ pipes No No No No Yes
Yes
No
Pipework - pre-fitted to front No No No No Yes
Yes
No
Pipework - pre-fitted to rear No No No No Yes
Yes
No
Sprung buffers No Yes
Yes
No Yes
Yes
Yes
Bufferbeam detail (in detailing pack)
NEM Couplings No Yes
Yes
No Yes
Yes
Yes
Pipework (for front) No Yes
Yes
No No No Yes
Pipework (for rear) No Yes
Yes
No No No Yes
Snow plough Yes
Yes
No No No Yes
No
Detail pack also contains...
Alternative headcodes No Yes
Yes
No Yes
Yes
Yes
Mechanical
Body Construction Plastic
Plastic with metal parts
Plastic with metal parts
Plastic
Plastic with metal parts
Plastic with metal parts
Plastic with metal parts
Chassis construction Lightweight
Plastic & metal
Plastic & metal
Lightweight
Diecast
Diecast
Diecast
Loco-driven wheels (number of) 4 wheels
8 wheels
8 wheels
4 wheels
8 wheels
8 wheels
8 wheels
Minimum radius Radius 2
Radius 2
Radius 2
Radius 2
Radius 2
Radius 2
Radius 2
Coupling socket/mounting
Fixed Yes
No No Yes
No No No
NEM pockets No Yes
Yes
No Yes
Yes
Yes
Coupling type Tension lock
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 Body clips off from 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
Electrical
Motor type Pancake
5-pole with two flywheels
5-pole with two flywheels
5-pole (standard)
5-pole with two flywheels
5-pole with two flywheels
5-pole with two flywheels
Motor location 1 bogie mounted
Centre of chassis
Centre of chassis
Centre of chassis
Centre of chassis
Centre of chassis
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
Directional headlights & tail lights No Yes
Yes
No Yes
Yes
Yes
Illuminated headcodes No Yes
Yes
No Yes
Yes
Yes
Pickups Power bogie only
All wheels
All wheels
All wheels
All wheels
All wheels
All wheels
DCC speaker No provision for speaker
Provision for 23mm round speaker
Provision for 23mm round speaker
No provision for speaker
Provision for 23mm round speaker
Provision for 23mm round speaker
Provision for 23mm round speaker
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