Home page

Loco Kits in N

All loco, coach and wagon fittings for N gauge

GWR loco and coach fittings in N

Southern Railway loco fittings in N

LMS pre-group fittings in N

LMS fittings in N

LNER pre-group fittings in N

LNER fittings in N

BR loco fittings, general loco fittings, coach and wagon fittings.

Trams, narrow gauge, posters and timetalbles in N

Line side kits, fencing and signals in N

Signal equipment and signals in N gauge

25 kV catenary supports and fittings in N

Rolling road for N gauge

Our contact details

25kV Catenary and OHLE for N

25kV OHLE supports as installed on the West Coast Mainline and electrification projects of the 1960s.  Components can be mixed and matched to give variations on the supports illustrated.

CANTILEVER SUPPORTS

Used on both straight and curved plain track, through stations with an island platform and in modern servicing facilities.  Also used among Portal Supports in areas of complex trackwork.

The post is 'H' section milled brass, the insulators, register arms and tubing are etched n/s.  They can be assembled with solder or super glue.

25500 Cantilever support with 6ft encumberance.  2 pk. 6.00

25502 Cantilever support with 3ft encumberance.  2 pk. 5.40

25504 Bridge/ tunnel approach cantilever support.  2 pk. 5.40

 

 

25506 Yard and depot cantilever support. 2 pk. 5.40

 

 

TOP

PORTAL SUPPORTS

Both heavy and light portals with a choice of fittings in etched n/s or lost wax brass.  Available for 2, 3 and 4 tracks.

Portal kits come with 2 legs and a girder.  Both are an etch which fold up around a former.  The formed part is rigid with no need to solder or glue the folds.  Legs have half etched lines marking standard heights for platform or ground mounting, but are a minimum scale height of 20 feet to allow the portals to be fixed at a height appropriate for the formation.

HEAVY PORTALS

These are preferred for long spans or where there are many wires (e.g. across pointwork).

25520 2 track heavy portal. 64mm between legs. 1 pk. 4.00

25521 2 track heavy portal.  64mm between legs. 5 pack. 17.00

25522 3 track heavy portal.  86mm between legs. 1 pack. 4.40

25523 3 track heavy portal.  86mm between legs. 5 pack. 19.00

25524 4 track heavy portal. 127mm between legs. 1 pack. 5.50

25525 4 track heavy portal.  127mm between legs. 5 pack. 23.50

 

 

25526 4 track heavy portal with sloping ends.  127mm between legs. 1 pack. 5.50

25527 4 track heavy portal with sloping ends.  127mm between legs. 5 pack. 23.50

 

TOP

LIGHT PORTALS

Light portals are used on plain track and across simple point formations.

25530 2 track light portal. 67mm between legs. 1 pack. 4.00

25531 2 track light portal.  67mm between legs. 5 pack. 17.00

25532 3 track light portal. 91mm between legs. 1 pack. 4.40

25533 3 track light portal.  91mm between legs. 5 pack. 19.00

25534 4 track light portal. 132mm between legs. 1 pack. 5.00

25535 4 track light portal. 132mm between legs. 5 pack. 21.50

PORTAL BENDING FORMERS

Portal girders and legs are one piece etches.  The etch is rolled around the former, then the former is pulled out which leaves a four sided leg or girder. For information on FORMING GIRDER OR LEG click.

   

 

25555 Heavy girder former. 4.

25556 Light girder former. 3.30

25557 Leg former. 2.40

TOP

PORTAL FITTINGS

Register arms and support pulleys for use with both heavy and light portals.

Register arms are used to hold the contact wire in place.  Above them are the support pulleys from which the support wire is hung.  In some situations, typically in yards or station approaches where speeds are low, register arms and support pulleys are combined into a single unit.

PORTAL FITTINGS etched

Etched portal fittings suitable for both heavy and light portals.

25582 A Frame register arm, max height is 12.5mm.  Etched n/s.  4  pack.  3.50.

25583 Upright support pulley, register arm hanging.  Pulley is 4mm high.  N/s etch.  6 pk.  5.50.

25585 Register arm hanging, support pulley hanging.  Etched n/s.  6 of each.  5.50

 

25586 Insulators Type A.  Etched n/s.  18 pack.  2.20

25587 Insulators Type B.  Etched n/s.  18 pack.  2.20

 

TOP

PORTAL FITTINGS cast

Lost Wax cast brass portal fittings suitable for both heavy and light portals.

25588  A Frame register arm.  Cast.  4  pack.  8.00.

25589  Upright support pulley, register arm hanging.  Cast.  6 of each.  16.00.

25590  Register arm hanging, support pulley hanging.  Cast.  6 of each.  16.00

     

SPACING THE SUPPORTS AND HANGING THE WIRES

OHLE supports were erected to suit the track location and the instructions of the planning engineer.  Identical track arrangements can have different support arrangements.  Look at the prototype and examine photographs to see how supports are arranged.

On straight track maximum spacing is 73m, 0.49m (19.5inches) in N gauge.  A more typical spacing is 63m, 0.42m (17inches).  Supports are closer on curves and by points.

Contact wire height is typically 4.1m (13ft 6in), maximum is 5m (16ft 6in).  Model 25kV locos often need the contact wire to be higher and contact wire height should be checked against the model locos and adjusted if needed.

Supports can be erected without wires.  This allows access to clean the track and put stock on.  If hanging wires, guitar strings are a good choice.  These do not tarnish, have a low coefficient of expansion and do not kink if caught, but spring back into place.

TRANSFORMERS

 

25470 Booster transformer.  4mm diameter, 7.8mm high.  2 pk.  3.20.  3D print.

25471 Booster transformer.  Create a sub station to feed your overhead.  12.4mm long, 5.4mm wide, 11mm high.  2 pk.  3.80.  3D print.

25472  Transformer oil cooled.  Create a sub station to feed your overhead.  17mm long, 10mm wide, 11mm high.  1 pk.  4.40.  3D print

TOP

 

 

25473 Oil cooled transformer, small.  10mm, 6mm wide, 6.5mm high.  2 pk.  3.80.  3D print.

 

 

For AWS ramps, speed signs, relay cabinets, colour light signals.  See N Lineside 3.

Copyright (c) 2016 N Brass Locomotives. All rights reserved.