XRBD 8017 Roco

Trailer XR 7800

Photo Roloff on Wikimedia.

Brand - Reference

Roco 45691 and 64216

Type

XRBD 7800 and XRBD 7300, unified railcar trailers.

Number Revision date
XRBD 8017 11.5.79
XRBD 7308 28.7.67

Mass

117 g (NEM: 98 to 127 g)

Comments

Wheels ø 9 too small: the actual diameter of 860 gives 9.9 to scale. The ideal would be the wheels for TP wagons released by REE in 2016, whose diameter is precisely 9.9: a little too big for the TP, but exact for the unified trailers. But the brake shoes jam. The yellow colour is too dark.

Ref. 45691: the high price is probably due to lighting. There is even a completely hidden bulb which was probably used to illuminate the tail lamps, but there is no light guide! So the bulb only serves for heating (well for passengers in winter!) and to consume electricity.

Ref. 64216: the price is increasing, but not the quality! There are current pickup strips, but no lighting at all (except the light guide). The seats in the luggage are deformed because the body is wrongly mounted. Moreover, the interior fittings were roughly filed in a vain attempt to fit it properly, hampered by the lamp light guides. A point nevertheless positive (hey no, not even, see below!): the fittings are specific to this trailer with a small luggage, with armchairs and not benches. But nothing justifies such a price!

See:

Modifications

  • Lanterns and compartment lighting with LEDs.
  • Function decoder.
  • Bachmann ø 9.6 wheels painted, on Piko axles.
  • Drawbars letting the complete buffer beam to be installed.

History

All types included, the unified bogie railcar trailers XR 7300, 7800 and 8100 were built from 1952 to 1962, to 692 units, by Decauville, Compagnie Générale de Construction, Compagnie Française de Matériel de Chemin de Fer and Soulé.

They are often named “Decauville” by misuse of language, the actual Decauville XR 6000 and 7200 trailers having been built just before and just after the Second World War, and having served them as a kind of prototype.

The 7308 belongs to the 7301 to 7530 series with small luggage compartment (6.7 m2), manufactured from 1952 to 1960. This series was normally mixed 1st / 2nd class (XRABD). But it may have been downgraded afterwards.

The 8017 belongs to the 7801 to 8018 series with large luggage compartment (15.3 m2), manufactured from 1955 to 1962.

Quotation of the Loco-Revue sheet No. 176/177.

Note that the picture shows a trailer with small luggage compartment; we see a passenger access door right next to the luggage door (probably an XRBD 8100).

This type of railcar trailer represents the most widespread model on the SNCF network. Of lighter construction than the classic passenger cars, it is intended exclusively for railcar traffic.
All these trailers are similar with some exceptions. They are subdivided into several sub-series according to their interior fittings, their general characteristics being identical.
They are intended to be towed by medium power railcars (from 300 hp (220 kW) up to 825 hp (605 kW) in order to increase the capacity offered by these railcars on certain lines, using the available power.
The possible compositions vary with the power of the traction unit(s) and the profile of the line to be covered — a maximum of 4 trailers can be reached in some cases with one or two railcars.

Documents

XRBD 8017 RocoXRBD 8017 Roco

XRBD 7308 RocoXRBD 7308 Roco

Trailer XR 7800

Photo Roloff on Wikimedia.

Dimension Actual 1:87 Model
Overall length 21 192 243.6 243.0
Chassis length 19 862 228.3 228.0
Body width 2 924 33.6 33.9
Height 3 179 36.5 35.8 1
Pivot distance 15 850 182.2 180.3
Bogie wheelbase 2 200 25.3 25.0
Wheel diameter 860 9.9 9.0 2
  1. With ø 9.6 wheels.
  2. Original wheels.