Hornby 2721 class detailing
The 2721 is an old-stager in the Hornby range and by no means up to the standard of recent RTR but it's a characterful model that offers a bit of Edwardian charm with its delightful open cab. The main problem, aside from the usual issue of ride height and (I think) wheel spacing - is the sparse chassis detail, which completely lacks outside pull rods.
One option is to swap the Hornby one for a Bachmann pannier chassis:
but I decided to see what could be done with the model "as is". The chassis under this model isn't the one it came with, which was the very old version with open frame motor, unflanged centre drivers and pickup off only two axles, but rather a newer version with a can motor and three axle pickup that nonetheless still fits the old tooling. I got it off ebay for less than twenty pounds including postage.
The main job was to add the outside brake gear - this is the third attempt. I glued etched brake shoes to the plastic versions moulded as part of the keeper plate, then added cross-rods and outside pull rods from plastikard. My first effort was too fragile, but the cross-rods make the whole thing more than strong enough to withstand normal handling.
In addition I have added separate handrails all round and am now in the process of additional detailing and finishing. The spectacle plates are from the Mainly Trains etch. The model has been resprayed with Precision GWR green and will carry "Great Western" lettering, I think.