Fs coupling Electrotren

Fd coal hopper coupling

Anonymous photo / Gérard Huet on forum.e-train.fr.

Electrotren 0918 K

Jouef HJ6144 and HJ6145


Fd (MH hopper) so-called “EDF coupling” for coal transport.

UIC number Revision date
23 87 612 8 955-8 P 8.12.89
Home base: Villeneuve St Georges
21 87 064 7 992-8 P 11.11.74
Home base: Reims
21 87 064 7 770-8 P 13.10.73
Home base: Creutzwald

Resp. 94, 76 et 92 g (!) (NEM: 70 to 91 g).

Good respect of scale, except the wheels too large, but it doesn’t show too much, and they will be changed. The two Jouef references, released at the same time, have curiously very different weights.

Attention: when removing the wheels, to paint for example, the drawbar supports dislocate very easily.

There are some inaccuracies, such as the reproduction of the same brake equipment on both wagons, while one part is a single copy, common to both wagons. Another is the omission of a reinforcing angle at each end top, visible on almost all photos.

The interior, hidden by the load, is not represented. It will not be possible to show an empty train.

See the Loco-Revue Forum.

Quotation of Gérard Huet.

On a real coupling (I don’t speak of “false” couplings obtained by assembling two old single wagons), the braking mechanism is not identical on the two wagons: there is a complete system to one side with cylinder, distributor, tank, vacuum handle. The other wagon has just a single cylinder (no tank, no distributor and no vacuum handle). A tee connector is used to connect a hose to feed the second wagon’s cylinder. On the Electrotren model, it will be necessary to remove the distributor, its support and the air tank from the second wagon.


  • Wheels, linkage and brake blocks, buffers painted. Air tank and distributor removed from one of the wagons of each coupling. Attention: the axles are difficult to put back in place because of the drawbar support. Proceed gradually on both sides.
  • Wheels ø 10.4.
  • All wagons weighed down to 78 g on average by removing ballast plates.

With a total capacity of 76 m3 and 58 t of coal, these wagons were built from 1963 to 1967 to 1218 units on Arbel plans. They are called "EF 60". Central unloading by automatically opening and closing the trap doors, which implies a special installation preventing mixing with other wagon types. Source: ajtrainsim.free.fr.

Quotation of Gérard Huet.

The first EF30 wagons (30-tonne coal wagon for EDF plants) were released in 1955 (ARBEL plans and design, but various manufacturers). They were then supplemented by EF60 couplings (60-tonne), two permanently coupled EF30 wagons, very simplified buffers, and a braking system common to both wagons. In the 1980s, single wagons were converted into couplings, generally keeping the buffers, but with modification of the brake components (as for “real” couplings.) These wagons are normally painted in light grey (with a slight bluish nuance), but they are quickly damaged by the intensive exploitation in coal transport and constitute a beautiful field of investigation for the addicts of the realistic weathering.

General characteristics (coupling):

  • Capacity 76 m3
  • Usable load 58.5 t
  • Maximum gross weight 80 t

Trap door control:

  • Opening: by swinging the hinge after unlocking the safety lever.
  • Closing: the trap doors close automatically when the caster passes over the ramps between the rails.

Duration of unloading: instantaneous.


  • Drawing by Gérard Huet
  • Photo of Anton Kendall
  • La Vie du Rail sheet, where it is clearly stated that the wheel diameter is 920 mm, unlike most 2-axle wagons, which have wheels of 1 000 or 1 050 mm. My modest check.
  • Report of the BEA-TT (Land Transport Accident Investigation Office) on the derailment of 44 EF60 hopper train. You can see pictures of the undersides of the lying wagons and the coal load.
Hopper coupling diagram

To have a clear mind about this, I checked two photos of the Loco-Revue Forum provided by Gerard Huet, and very lightened to better see the interesting parts. With all the usual reservations (wagon not perfectly profile, angle of field, etc.), I found in one case 936 mm, in the other 948 mm (base: wheelbase of 5 250). And 1000 mm gave an obviously too large diameter. So, rather 940?

Fd coupling ElectrotrenFd coupling Electrotren

Fd coupling ElectrotrenFd coupling Electrotren

Fd coal hopper coupling

Anonymous photo / Gérard Huet on forum.e-train.fr.

15 160 174.3 175.5
1 wagon 6 710 77.1 77.6
3 120 35.9 36.0
3 800 43.7 44.4 1
1 wagon 5 250 60.3 60.5
Total wheelbase 12 460 143.2 144.2
920 10.6 11.4 2
  1. With original wheels; 43.8 with ø 10.4 wheels.
  2. Original wheels.