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Finescaling a Hall - Part 2

Posted by D869 , in steam 20 February 2015 · 797 views

A quick update on this project.

The chassis is now pretty much done barring a few odds and ends like couplings and attention is now turning to the superstructure.

Again there is not much to say about the chassis build - it went together as per Nigel's comprehensive instructions... although I do prefer to get things running and tested at the earliest possible stage whereas the instructions save the installation of the worm until quite late in the day.

One part that did prove niggly this time was the brakegear etch. I don't know why but having had no problems with this part on the Manor, it caused the Hall's chassis to jam and it took quite a lot of trial and error and tweaking to get the coupling rods to stop hitting the brake blocks and finally discover that the back of one of the crankpins was also hitting one of the etched cosmetic springs.

I also discovered while trying to trace a squeaking noise that the front end of the footplate was sitting too low and the front splasher was fouling the driving wheel flanges so it was quite difficult to turn the leading axle by hand. Surprisingly this seemed to be having little effect on the running. This must be down to the chunky motor and the high gear ratio in the drive train. Anyway that issue has been sorted by adding in 15 thou of packing to raise the front end a little.

The wobbly middle tender axle seemed to be not too much of an issue when the Hall was tried on St Ruth. I was hoping to pad out the bearings somehow but having measured the pinpoint dimples I'm now less convinced that their depth is the main problem. They are most definitely bigger in diameter though, hence the extra play in the axle. Padding the bearings doesn't seem to be a very easy option and attempts so far have been unsuccessful. It has now had some 36SWG phosphor bronze springs added which should resolve the vertical play but not the fore and aft movement. We'll see how it goes.

Having done most of the chassis jobs I then immediately set about attacking the body. I was anxious to not allow myself the excuse of leaving the loco in its factory finish ad infinitum (i.e. like the Manor) and given that it said 'Great Western' in large letters on the tender side, it would have been very out of place on St Ruth.

Work on the body so far has included removing the Dapol etched plates - I was worried about this job but they pinged off with relatively little fuss when subjected to firm pressure parallel with the cab sides and applied to their top or bottom edges using a small screwdriver, the hope being that Dapol's glue was weak when subjected to shear forces (it worked anyway).

Another bit of uncharted territory was erasing the pre-1948 elements of the livery. Having read up on the subject, I tried using T-Cut. After over half an hour I'd only erased perhaps half of the Bristol coat of arms on one tender side so I gave this up as a bad job. It also left a very gloss finish and a 'ghost' where the printed crest had been. After trying white spirit and IPA on a cocktail stick with little discernable impact I finally resorted to more severe methods.

Some time back I'd managed to buy (probably by mistake) a pack of No. 15 Swann Morton blades. These are small things with a convex curve to their cutting edges. Sticking a new one of these in the scalpel and carefully dragging it across the lettering showed immediate progress and the finish left behind was not terribly different from the original Dapol finish. It's still taken a lot of time but I'm very pleased with the results. In some places I've also used some tiny strips of 1200 grit wet & dry to even out the finish. I've also attacked the firebox lining but have concentrated on trying to remove as much of the orange as possible, which has been tricky where the lining paint has slightly 'missed' the moulded band. I'm less worried about removing the black. There are also some very inaccessible bits of the rearmost band that I've left alone. Time will tell whether these come back to haunt me.

...Which reminds me... I still need to remove the buffer beam number.

The moulded handrails have been pulled away from most of the boiler. Some of the knobs popped out of their holes nicely, others snapped. I didn't have much choice here because one of the knobs had already snapped so I needed to gain some clearance to be able to fix that. I'm still not too happy with the size of the joggle on the left hand side of the smokebox but I'm not sure what can be done short of replacing the entire handrail which I don't want to do.

Finally the moulded coal has been cut out of the tender and the edges cleaned back to allow a real coal load to be added. I've taken this back flush with the insides of the tender moulding so a small strip of the original 'coal' remains but hopefully this will be covered up when the real coal is added.

A couple of photos in its current condition.

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Useful information on removing the plates and other insignia. Sounds a bit of a job.

Don

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MinerChris
Feb 21 2015 03:54

Is the insulation destined to keep the coupling rods on the hall too? :imsohappy:
 
Do you have any idea about how the moulded handrail brackets compare to similar ones from NBrass or the 2mmSA etched ones, as I guess this is the option for replacing the broken ones? 
 
Chris.

Useful information on removing the plates and other insignia. Sounds a bit of a job.
Don

Thanks Don.

Is the insulation destined to keep the coupling rods on the hall too? :imsohappy:

For now, yes. It's rather more tricky to remove a soldered on washer. I won't mention names but I'm definitely in good company on this one although tracking down some black insulation would be a bit more in keeping.
 

Do you have any idea about how the moulded handrail brackets compare to similar ones from NBrass or the 2mmSA etched ones, as I guess this is the option for replacing the broken ones?

I don't have any turned or etched ones to compare with but I don't think it would be easy to replace a moulded one because somehow I would need to remove the moulding while retaining the integrity of the handrail - as mouldings they are of course all the same bit of plastic. Replacing the handrail too would probably be a more practical option.

The snapped ones have only broken at the point where they plug into the boiler so I'm hopeful of being able to do something with them - at least with any that are the only means of support in the middle of a long run of handrail.

Regards, Andy

...as mouldings they are of course all the same bit of plastic.


I was wrong on that one - having now attacked the broken handrail bits it turns out that the handrail itself is a piece of wire with plastic knobs threaded onto it.

Surprisingly it turns out that the way that most of the knobs snapped left a small dimple centrally positioned in the base of the knob - ideal for positioning a 0.3mm drill. The more critical of the snapped ones have now been drilled and the corresponding hole in the boiler drilled to accept a wire dowel... no rubbish though - a brand new 0.3mm Dormer drill for this job. I'm also a bit more hopeful of being able to adjust the joggle once everything is back in its proper alignment.

Regards, Andy

Can I be so bold as to ask if you still have the Hall front bogie? I am desperately searching for a front bogie for a Manor (the Hall should fit I think), and Dapol just don't offer any spares at all even through DCC supplies....would happily offer fair price for it if you don't need it now...

 

Thanks,

Alan

Alan, I have Manor bits too. I'll PM you.

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A blog about my own modelling projects (as distinct from the St Ruth group layout) - centered around BR WR circa 1968-1972 and my own minimum space 2mm Scale 2FS layout 'South Yard'

 

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