Tuesday, 19 January 2016

Fish and Steel

We've moved the blog post forward this week as other commitments mean it will be tricky to create a post on Thursday. However, there's been plenty going on that we can share.

BDA Bogie Bolster Steel Wagons

Fastline Simulation: This early airbrake conversion of a Bogie Bolster D to diagram BD006A has six bolsters and four ratchets on each side and is finished in freight brown livery.

Fastline Simulation: This diagram BD006D BDA has a new design of bolster, considerably more ratchets for securing the load on each side and is finished in Railfreight flame red and grey livery.
One feature of the 1070's and 1980's was the conversion of existing vacuum braked wagons to air brakes as Britsh Rail strived to raise freight train speeds and to standardise across the network. Some 1250 Bogie Bolster D wagons were converted over about 5 years with their plate back bogies being replaced by Y25C examples with either clasp or disk brakes. At the same time various configurations of ratchets were fitted to allow the use of nylon straps to secure loads in place rather than the traditional chains any they were recoded as BDA.

The pictures above show an early conversion to diagram BD006A in freight brown livery and one of the final conversions to diagram BD006D in Railfreight flame red and grey livery.

BRA/YLA 'Mullet' Bogie Rail Wagons

Fastline Simulation: Freshly converted from a BRV BORAIL this Railfreight flame red and grey liveried BRA will spend about 18 months in revenue stock before being transferred to the engineers department and recoding to a YLA.

Fastline Simulation: A freshly repainted  YLA Mullet in engineers yellow and grey livery.
Like the Bogie Bolster D wagons above some 150 BORAIL wagons were converted to air brakes. The process was a little more complex than with the BDA bolsters with a new low sided body with pockets for the ratchets placed on top of the fishbelly underframe and six new bolsters being added. The wagons gained the TOPS code of BRA.

The wagons only managed about 18 months as a part of the revenue fleet before being transferred to the Engineers department and recoding as YLA Mullets. Eventually they were to gain engineers grey and yellow livery signifying their owning department though they appear to have been frequently borrowed when loads requiring their length were required. More recently some have gained EWS livery and can still be seen carrying long steel loads.

YQA 'Parr' Bogie Sleeper Wagon

Fastline Simulation: In progress render of a YQA Parr sleeper carrying wagon with 9 load ratchets on each side.
At various stages from 1985 onwards around 70 YLA 'Mullets' have been converted to (almost) flat wagons with the removal of the bolsters, the fitting of heavy longitudinal timbers and a number of different ratchet configurations. Initially this conversion looks to have been for the carrying of track panels and the TOPS code of YMA was applied. Allegedly following some confusion the FISHKIND of Parr was applied and eventually the TOPS code changed to YQA at possibly the same time that more wagons were converted for carrying concrete sleepers.

The render above shows a fairly typical configuration for a YQA 'Parr' with 9 ratchets on each side and is one of four different variations currently under development.

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