I've been absent from this forum for some time but here are a few recent projects. The first is a Metropolitan Railway K class Tank engine created from a Bachmann N Class.
Don't ever recall seeing a model of this. So interesting to look at. It's a Princess, it's a Duchess, it's a Punchess...Another project which I failed to show on here when completed. Princess Anne...
Oh yes, that's something unique for your layout. Were any changes made to the 2-10-0s as a result of the testing, or was the testing research for the Riddles 9F?WD 2-10-0 created by extending a Bachmann 2-8-0 chassis using parts and body parts from another damaged 2-8-0. Running with the LMS corridor tender which was used to test one of the class.
It was the variability in mechanism endurance that decided me to give up on Bach's split chassis steamers, before they abandoned these mechanisms in favour of regular steel axle wheelsets and wheelback wiper pick up. For me the point of having a model railway is to operate, and the result was that I wore through the conductive plating on tyres, stub axles and the 'axleboxes' typically well before the plastics in the driveline gave trouble, on an original condition mechanism. By recycling usable parts from worn out mechanisms to make assemblages that would run, the plastics troubles then emerged into view. I quite literally ran the final specimens of each class to 'wear out'; insufficient parts with life left in them to make one good running mechanism, and in all this never a single motor failure - that was a good unit.... Despite the split chassis Sir Francis Drake has always been a good runner...
I'm pretty certain that there was an article in the Railway Modeller in the late 1960s about doing such a conversion, but I wouldn't have a clue which issue it was in. It's a conversion (together with Peter Drummond's projected HR example) that I have often considered doing, in spite of having two unmade DJH kits that I never seem to get around to doing anything with.Elsewhere, there are those who are contemplating the conversion of an M7 into a Caledonian Railway 439 class.
A redesign less radical than conversion to a tender loco must have been possible. The description of the problem leading to the derailment suggests some resonance in the side tanks, which baffle plates would have limited, and there was no reason why the tanks could not have been somewhat lowered too. Whatever, the SR didn't go that way...One important difference between the Fowler and Maunsell designs was the fact that the Fowler tanks had most of the tanks mounted lower down which also lowered the centre of gravity. The side tanks plus the 6' driving wheels of the K class must have meant a less stable loco.
That's an aspect of models I enjoy, makes the line of development very clear.I will be able to show in model form the development from the K class right through to the BR Standard Class 4...