5" gauge model of 4472 Flying Scotsman

[greenglade]

Good day all... I have now assembled the 2:1 gear, there are a few small bits left to do. I need to plot and drill the holes for the retaining split-pins, Don states to use 3/64, I think that I'll go smaller with 1/32. I also need to finish drilling the oilways, these are very small at No.60 and I should have waited for a new drill bit to do these. The first one went without incident but alas I broke the drill on the second pin and I seem to have mislaid a pin too? No big deal, I'll wait until I have a new drill bit and tackle the job properly then. A big thank you to Eddie for describing how the middle cylinder link pin is secured on the prototype, I have done something similar for the model, details in the blog. There is also a new time-lapsed video showing the gear being assembled onto the model, well it is except for my big arm getting in the way, I must try harder next time, now that has a familiar tone to it, from perhaps 50 years ago...



http://4472flyingscotsman.co.uk/gresley ... ks-part-3/

Pete

[greenglade]

Hi guys... this isn't a new entry as such, just me adding to the last blog entry as it's too short to warrant an entry of its own and I think that these details need to be included. I guess the next job on the list is the cylinder valve spindles, bobbins and valve crossheads, that should keep me busy for a while.



Please check the previous link posted for details.

Pete

[greenglade]

On to the piston valves etc...just making a start in this blog entry



http://4472flyingscotsman.co.uk/piston- ... ns-part-1/

Pete

[greenglade]

Well, that's the cross-heads all but the taper and some final polishing, next will be the spindles and if the material arrives in time the valve bobbins too.



http://4472flyingscotsman.co.uk/piston- ... ds-part-2/

Pete

[greenglade]

Hi guys... a change in plan re 'paint' finish...As can be seen, by the two accompanying photos, I have painted the running boards in the 90% gloss finish, well you can see the splashers, everything else had been boxed up to protect from dust and await hardening before I tackled the removal of any blemishes... However, the amount of gloss had been bothering me as it's just too shiny to how I see 4472 during the late '30s, or for that matter at any time in her long career. This morning I have been looking through all of my reference images from the '20s/30's and also during preservation and none look as gloss as the picture shows here. Now I know that yes full gloss is the finish applied but you have to be very careful when applying it to a model or you end up with what looks like a 'toy'. Even the close-up photos that I took of her at York in 2016 show a satin finish, yes I know it began life as a full gloss but it soon dulls down and it's that 'patina' which I believe my model needs to look right. Therefore, in due course when I sand down the parts to remove any dust/debris from under the paint I am going to give them a light coating of satin which is at 70% gloss level. Not an easy decision to make but each time that I look at that gloss I know that in my head it will always look wrong, or should I say, wrong for a model of this scale.





In other news, some of you may have noticed that my blog has been offline for the last 7/10 days, this is due to the server still playing up. Hopefully early this week normal viewing shall return as the blog is migrated over to new hardware, sorry for the inconvenience to those who have been using it as a visual guide to their own builds. Pete
Ah, forgot to add, I'm not counting her high gloss finish as applied for Wembley 1924/25...

Edit: I'll get back on to the spindles/valves soon

[greenglade]

good afternoon all, sorry for lack of content of late, I was away in Cornwall for a while and now in the middle of some DIY. However, I have found time for 4472 and continuing with my recent post, I have now taken care of that paintwork which has bugged me for so long. well bugged me twice, first the bad finish and then recently the too high level of gloss... I think that I've sorted it now, well, sorted in my mind that is, I like the new finish and think it will look just right on the finished model.
Here's the latest blog entry to show what I mean.



http://4472flyingscotsman.co.uk/repaint ... oards-etc/

Pete

[greenglade]

Morning all, today's blog entry has just been posted and no it's still not the spindles/bobbins. I decided that since I had corrected the running board paintwork I may as well get the smokebox out of the way too. This involved a lot more work than just a new coat of paint, details within...



http://4472flyingscotsman.co.uk/complet ... -smokebox/

Pete

[greenglade]

Evening all, at last, I have made a start on the spindles/valves, as explained in the blog entry I'll be following Jim Ewins lead on the bobbin design although the bobbin itself will be using different materials, the bobbin will be covered in part 2, here's part 1 to begin with...



http://4472flyingscotsman.co.uk/spindle ... es-part-1/

Pete

[Horsetan]

Well, that's the cross-heads all but the taper and some final polishing, next will be the spindles and if the material arrives in time the valve bobbins too.

....

Loads of lessons here in what we can get away with, for those of us working in smaller scales

[greenglade]

Lots of work involved in this one but it's nice to be able to tick the box, well nearly, have one final job to do, details in the entry...



http://4472flyingscotsman.co.uk/spindle ... es-part-2/

Pete

[drmditch]

Fascinating (as usual).
Please may I ask what the sleeves you have used for the valves themselves are made from?

[greenglade]

Fascinating (as usual).
Please may I ask what the sleeves you have used for the valves themselves are made from?

Sleeves (liners) are Bronze to match the cylinders...

cheers

Pete

[greenglade]

evening all, I've begun getting the outside cylinders ready for final fitting to the frames, this may take a few blog entries. here I cover the exhaust passageway and make a start on the draincocks and associated parts.



http://4472flyingscotsman.co.uk/outside ... l-fitting/

Pete

[greenglade]

Today's blog update covers the draincock and relief valve assemblies, lots of fiddly work in this one. I have some finishing touches still to do but I'll take care of those on the final assembly after I have painted the cylinders and fitted them to the frames.



http://4472flyingscotsman.co.uk/drainco ... ef-valves/

Pete

[greenglade]

I am now very close to fitting the cylinders to the frames, I'll go over everything this weekend and unless I can think of a reason 'why not' the next blog entry will have the cylinders properly fitted where they belong. For this blog entry, I cover the main steam pipe flanges, painting the cylinders and checking access for removal of pistons and valves without removing the cylinders from the frames.



http://4472flyingscotsman.co.uk/cylinde ... he-frames/

Pete