Arun Sharma
Western Thunderer
I've been CAD doodling of late following a few trips to Clapham Junction [Sarf' London as opposed to North Yorkshire] to photograph the class 455/8 SWR EMUs before they all get replaced by new class 701 Arterios.
The class 455 have the highest availability of any EMUs on BR being of a fairly simple design based on the Mk3 20metre bodyshell. They share essentially the same bodyshell as many of the Sprinter DMUs and early second generation 3rd rail and 25kV EMUs. In fact the first class 150 was created by taking a 455 shell off BREL's production line and putting a diesel engine in it.
All the remaining 455s are now employed by SouthWesternRailway and there are three subclasses distinguishable by their different cab and roof lines:
This is the class 455/8:
The upper pic is a screenshot of the CAD program showing the artwork for the cab and how it relates to the fwd half of the passenger area. The lower pic is part of that artwork translated into solid form via 3D printing in 7mm scale [naturally]. This basic design could [like BR did] be used for a variety of MUs including the class 210 DEMUs that worked (mainly) on the BR(W) lines out of Reading.
These were printed at home on an Elegoo Saturn 8k resin printer but the body shell will be printed [in two halves] on an industrial FDM printer in ABS because it is 381mm long and being devoid of significant surface detail, can be printed on an FDM printer and sanded smooth. The doors [blue in the picture] will be printed separately on a resin printer because of not wishing to lose the surface detail. I will draw some nickel-silver etches for the window surrounds and drop-down ventilators.
Visitors to the Guildford O gauge Trade Show [23 Nov 2024] should be able to see this on the 7mm Scale Society stand.
The class 455 have the highest availability of any EMUs on BR being of a fairly simple design based on the Mk3 20metre bodyshell. They share essentially the same bodyshell as many of the Sprinter DMUs and early second generation 3rd rail and 25kV EMUs. In fact the first class 150 was created by taking a 455 shell off BREL's production line and putting a diesel engine in it.
All the remaining 455s are now employed by SouthWesternRailway and there are three subclasses distinguishable by their different cab and roof lines:
This is the class 455/8:
The upper pic is a screenshot of the CAD program showing the artwork for the cab and how it relates to the fwd half of the passenger area. The lower pic is part of that artwork translated into solid form via 3D printing in 7mm scale [naturally]. This basic design could [like BR did] be used for a variety of MUs including the class 210 DEMUs that worked (mainly) on the BR(W) lines out of Reading.
These were printed at home on an Elegoo Saturn 8k resin printer but the body shell will be printed [in two halves] on an industrial FDM printer in ABS because it is 381mm long and being devoid of significant surface detail, can be printed on an FDM printer and sanded smooth. The doors [blue in the picture] will be printed separately on a resin printer because of not wishing to lose the surface detail. I will draw some nickel-silver etches for the window surrounds and drop-down ventilators.
Visitors to the Guildford O gauge Trade Show [23 Nov 2024] should be able to see this on the 7mm Scale Society stand.
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