Saturday 27 August 2022

A firmly 'Anchored' chassis frame

Although I have the Bachmann chassis that the A1 Models diesel is designed to fit (in my case a U36-B) I have opted to instead use an Atlas GP7 chassis to power the model. This is a slightly more sophisticated chassis and has a smaller die-cast section and allows for a figure (of sorts) to be represented in each cab, whereas the Bachmann chassis would only really allow something at one end. This particular chassis was previously used under my original Dapol railbus loco conversion and it was still in the chassis frame from this era. This proved useful as a blueprint for the new frame that would be required for the A1 body.


The new unit is largely 40 thou styrene, reinforced with Evergreen strip where required. Through careful measurement it and the original clip onto the Atlas chassis block using four dimples drilled into the inner sides of the upright sides. Between the bogies I have added a section that hides the fuel tank area of the chassis but also reflects the design of 'Royal Anchor'.

I found two suitable figures to sit in the loco, they had to get head and shoulders within the width of the chassis upright as this slots into the A1 Models body (there are substantial strengthening ribs along the bottom edge). The figures are actually glued in place as they will only get require minimal painting to give an impression of colour. The chap at this end looks rather bored, he must be awaiting the right-away!


Having been reminded by an observer of the absence of any Dapol kit parts so far in the build, I delved into the railbus and drewery shunter bits boxes in order to maintain this tradition. Space constraints ruled out my initial thought to use the part from the railbus kit that represent the side of the engine block, visible through the side window. I considered Drewery shunter vac pipes but in the end I resorted to a railbus air tank under the bufferbeam at the far end and a box of some sort at the the closest end. 

The next step was to make provision for MicroTrains couplers. As luck would have it the bottom of the bufferbeams is 7mm from rail level, and there is just enough material to drill a 1mm dia hole to screw the coupler into. There is just one problem... it looked tacked onto the bottom of the bufferbeam!


This would take some thought to resolve, we shall see how next time.

Colin

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