Brassmasters Rebuilt Royal Scot, 46109
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Re: Brassmasters Rebuilt Royal Scot, 46109
Wow - that's fabulous. Not easy to see when assembled, but you know it's there. All those items between the frames and below the footplate = a complete model.
Look forward to seeing it some time.
Cheers,
Steve
Look forward to seeing it some time.
Cheers,
Steve
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Re: Brassmasters Rebuilt Royal Scot, 46109
Wow Dave it's just fabulous. Can't wait to see it running
All the best for the New Year
Robin
All the best for the New Year
Robin
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Re: Brassmasters Rebuilt Royal Scot, 46109
Thanks for the kind comments.
The cylinder drain cocks and operating linkage have been fitted and, I'm fairly sure, that completes the cylinder/valve gear unit.
In this photo, the connecting and eccentric rods have been disconnected from their crank pin; hence the strange angles.
Dave.
The cylinder drain cocks and operating linkage have been fitted and, I'm fairly sure, that completes the cylinder/valve gear unit.
In this photo, the connecting and eccentric rods have been disconnected from their crank pin; hence the strange angles.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
I think I've just experienced a modelling first.
Not much work on the Scot recently as I've been occupied by other things but am making a jig to position the angle section sand pipe supports and, for the first time I think, I've had to change a piercing saw blade because the teeth were worn out, rather than because I broke it!
Dave.
Not much work on the Scot recently as I've been occupied by other things but am making a jig to position the angle section sand pipe supports and, for the first time I think, I've had to change a piercing saw blade because the teeth were worn out, rather than because I broke it!
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
The jig mentioned above is now complete and ready to use. Probably a bit of over-kill, but there are 8 supports to be accurately positioned for depth below the frames and spacing either side of the axle.
The jig clamps to the spring part of the keeper plates and can be adjusted for position before tightening the clamp screws (the larger head in the photo). There are pivoted side pieces that hold the 0.8 mm angle material for the sand pipe supports. They can be hinged out of the way to allow the jig to be removed once the angle is soldered to the mounting tags on the spring part.
Here's the front section of keeper plate and the jig with the side parts hinged away.
And here the jig is clamped to one of the springs and a lash bit of 0.8 mm angle held in position by the side part moved into the working position. The support angles need to have a bend in them so they lie against the mounting tag which can just be seen above the jig.
Hope it works in practice.
Dave.
The jig clamps to the spring part of the keeper plates and can be adjusted for position before tightening the clamp screws (the larger head in the photo). There are pivoted side pieces that hold the 0.8 mm angle material for the sand pipe supports. They can be hinged out of the way to allow the jig to be removed once the angle is soldered to the mounting tags on the spring part.
Here's the front section of keeper plate and the jig with the side parts hinged away.
And here the jig is clamped to one of the springs and a lash bit of 0.8 mm angle held in position by the side part moved into the working position. The support angles need to have a bend in them so they lie against the mounting tag which can just be seen above the jig.
Hope it works in practice.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Here's a not particularly good photo of the jig in use. You can just about make out the nearer support angle held in the LHS of the jig and soldered to its mounting tag. The one one the other side is already attached.
Only another six to do.
Dave.
Only another six to do.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Not that much progress since the last entry. I've been putting off the next steps and busying myself with some non-modelling activities to avoid having to tackle the sand pipes. Where's the problem with those I hear you ask - just bits of bent brass wire. Mmm....., not quite that straightforward on the Scot, especially if you want them to come away with the keeper plate.
Anyway, a start has been made.....
Frames with all eight support struts fitted:
Just visible in this shot is one of the notches cut into the bottom edge of the frame, into which a bracket attached to the ash pan side protrudes to lie flat against the frames and form part of the sand pipe support. In this way, the sand pipes, which extend up to (through) the footplate, are actually mounted on the keeper. The arrangement is shown in these photos:
Just have to motivate myself to plough on with the others, now.
Dave.
Anyway, a start has been made.....
Frames with all eight support struts fitted:
Just visible in this shot is one of the notches cut into the bottom edge of the frame, into which a bracket attached to the ash pan side protrudes to lie flat against the frames and form part of the sand pipe support. In this way, the sand pipes, which extend up to (through) the footplate, are actually mounted on the keeper. The arrangement is shown in these photos:
Just have to motivate myself to plough on with the others, now.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Looking superb Dave! - keep at it...
Cheers,
Steve
Cheers,
Steve
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Re: Brassmasters Rebuilt Royal Scot, 46109
Fair play Dave - suberb, starting to run out of superalitives!
It looks like you used brass wire for the sand pipe runs, from the footplate - may I ask what diameter please.
regards
Mike
It looks like you used brass wire for the sand pipe runs, from the footplate - may I ask what diameter please.
regards
Mike
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Re: Brassmasters Rebuilt Royal Scot, 46109
Yes, Mike, 0.45 mm brass wire. The real things are 1 5/16" O/d, which scales at 0.4375 mm, so I use 0.45 as the nearest readily available. I believe gravity sand pipes (as on GWR and early locos from other companies) were somewhat larger diameter.
Dave.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Dave Holt wrote:Yes, Mike, 0.45 mm brass wire. The real things are 1 5/16" O/d, which scales at 0.4375 mm, so I use 0.45 as the nearest readily available. I believe gravity sand pipes (as on GWR and early locos from other companies) were somewhat larger diameter.
I'm only surprised you haven't tried running a drill into the wire ends to make it look hollow!
That would be an ecumenical matter.
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Re: Brassmasters Rebuilt Royal Scot, 46109
All the sand pipes are now fitted and bent to shape. It looks like some very minor tweaking is required before the brackets to the support struts are fitted.
On this occasion, I've decided not to drill the ends of the pipes to make them look hollow.
Dave.
On this occasion, I've decided not to drill the ends of the pipes to make them look hollow.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Dave Holt wrote:All the sand pipes are now fitted and bent to shape. It looks like some very minor tweaking is required before the brackets to the support struts are fitted.
On this occasion, I've decided not to drill the ends of the pipes to make them look hollow.
Scot_146.JPG
Dave.
Trick missed Dave, Eileen does 0.4mm brass tube.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Yes, thanks, Will, I've got some. Seems a bit of a waste for these and it might be hard to stop it collapsing on the tighter bends. Not sure you can get plumber's bending springs that small.
Dave.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
but you could have .33 or other thin wire inside the brass tube, except at the lower end... to help prevent crumpling.
a@y
a@y
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Re: Brassmasters Rebuilt Royal Scot, 46109
After a bit more putting it off, I've fitted all eight support brackets to the sand pipes, This makes hem much more rigid and will allow trimming of the top of the rear pipes to just below the footplate.
Dave.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Looking splendid Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Dave Holt wrote:After a bit more putting it off, I've fitted all eight support brackets to the sand pipes, This makes hem much more rigid and will allow trimming of the top of the rear pipes to just below the footplate.
Is this going to prevent you from being able to drop the wheels out? Great looking build by the way.
(Edit) Ignore me I just read that they are part of the keeper plate! They really didn't consider the 4mm modeller when designing these locomotives...
Nick Allport
CLAG
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Re: Brassmasters Rebuilt Royal Scot, 46109
Yes, Jack, as you realised, the sand pipes come off with the keeper plate. The main problem is that the brake rigging is now interlocked with the sand pipe/keeper unit and, although loose, they both have to be removed and fitted together, which makes it a bit more complicated to align everything.
I've now fitted the treads to the rear steps and finally got round to bending the front guard irons (part of the frames) to shape. Just for fun, the chassis was posed with the tender from Black 5, 45232, to see how the steps align. Pretty well, as can be seen. Of course, the proper Scot tender is a fully rivetted type and has a higher front platform to match the loco footplate level.
Dave.
I've now fitted the treads to the rear steps and finally got round to bending the front guard irons (part of the frames) to shape. Just for fun, the chassis was posed with the tender from Black 5, 45232, to see how the steps align. Pretty well, as can be seen. Of course, the proper Scot tender is a fully rivetted type and has a higher front platform to match the loco footplate level.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Dave this is positively brilliant. It is making me have itchy fingers to get back to my V2's. There is a number of items in the way of this at the moment.
Any how hopefully I get to some modelling this weekend.
Any how hopefully I get to some modelling this weekend.
Doug
Still not doing enough modelling
Still not doing enough modelling
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Re: Brassmasters Rebuilt Royal Scot, 46109
Apart from the motor/gearbox torque restrainer and the pick-ups, I think the chassis is now complete. The last cosmetic items fitted were the front foot steps and bracing struts and the two injector overflow pipes.
All the parts have been re-assembled, partly to check the assembly sequence. After inserting ten 14 BA screws into the keeper plate, I discovered that the eccentric strap cannot be fitted into the sheaf unless the axle is partially withdrawn from the horns - somewhat frustrating but, hopefully, I'll remember for the future. With the keeper plate split in two (a mistake I now realise) and entwined with the brake rigging and the exhaust injector steam pipe floating around, it's a bit of a fiddle to get everything into place so the screws can be fitted. Three pinged out of the tweezers but were later retrieved, much to my relief.
Here we see both sides and the under side and top.
Dave.
All the parts have been re-assembled, partly to check the assembly sequence. After inserting ten 14 BA screws into the keeper plate, I discovered that the eccentric strap cannot be fitted into the sheaf unless the axle is partially withdrawn from the horns - somewhat frustrating but, hopefully, I'll remember for the future. With the keeper plate split in two (a mistake I now realise) and entwined with the brake rigging and the exhaust injector steam pipe floating around, it's a bit of a fiddle to get everything into place so the screws can be fitted. Three pinged out of the tweezers but were later retrieved, much to my relief.
Here we see both sides and the under side and top.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Motor restrainer now fitted. It's removable so the gear box can be tipped forward to access the motor fixing screws.
Dave.
Dave.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Hi Dave.
To say that I am highly impressed would be an understatement.
Hard to believe it is only 4mm/ft scale.
Regards
Tony.
To say that I am highly impressed would be an understatement.
Hard to believe it is only 4mm/ft scale.
Regards
Tony.
Inspiration from the past. Dreams for the future.
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Re: Brassmasters Rebuilt Royal Scot, 46109
Hi David, I have to agree with Tony's comment. A modeling at a skill I can only dream of. Well done and I look forward to seeing it painted and finished.
Keep Safe
Dave
Keep Safe
Dave
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Re: Brassmasters Rebuilt Royal Scot, 46109
Thanks for the kind comments, Gents.
In order to delay having to sort out the pick-ups, I've allowed myself to be distracted by bending lengths of 0.8 mm brass wire to represent the two injector delivery pipes and the train vacuum pipe under the footplate. Under the front end of the cab, these align (more or less) with the aft part of the pipes which are part of the chassis. Because of the vacuum pipe on the driver's side, the two delivery pipes are not symmetrical.
Having previously said that the chassis was complete except the pick-ups, I now realise that I haven't quite completed the hopper ash-pan operating lever.
A general view from underneath.
The driver's side, with the injector delivery pipe below the valance and clipped to the vacuum pipe directly above, but hidden. On the fireman's side, the delivery pipe is further outboard and higher up, hidden behind the valance.
Dave.
In order to delay having to sort out the pick-ups, I've allowed myself to be distracted by bending lengths of 0.8 mm brass wire to represent the two injector delivery pipes and the train vacuum pipe under the footplate. Under the front end of the cab, these align (more or less) with the aft part of the pipes which are part of the chassis. Because of the vacuum pipe on the driver's side, the two delivery pipes are not symmetrical.
Having previously said that the chassis was complete except the pick-ups, I now realise that I haven't quite completed the hopper ash-pan operating lever.
A general view from underneath.
The driver's side, with the injector delivery pipe below the valance and clipped to the vacuum pipe directly above, but hidden. On the fireman's side, the delivery pipe is further outboard and higher up, hidden behind the valance.
Dave.
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