Search found 345 matches

by Dave Holt
Wed Jan 27, 2021 11:04 am
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

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, rat...
by Dave Holt
Tue Jan 26, 2021 2:01 pm
Forum: Chassis and Suspensions
Topic: Tender CSBs and motor torque
Replies: 27
Views: 1402

Re: Tender CSBs and motor torque

Will L wrote:if you have a tender drive with a nice big motor in the tender and the loco chassis drive chain jams solid, even a rigid chassis tender may start revolving around the drive shaft


Shades of Wallace and Gromit's a Grand Day Out.
Dave.
by Dave Holt
Sat Jan 23, 2021 6:38 pm
Forum: Steam Locomotives
Topic: Hornby Crosti 9F
Replies: 9
Views: 949

Re: Hornby Crosti 9F

I too am a bit sceptical whether a straight re-wheel of a rigid chassis would be a success in P4. I've seen 2-8-0s like this run satisfactorily, presumable helped by the slight play in the narrow axle slots/holes in the frames. But a 2-10-0 might be a step too far. If it were me, I'd build a replace...
by Dave Holt
Sat Jan 16, 2021 5:43 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

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.
Scot_139.JPG

In this photo, the connecting and eccentric rods have been disconnected from their crank pin; hence the strange angles.
Dave.
by Dave Holt
Mon Jan 11, 2021 11:28 am
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Error corrected. I realised that I had fitted the outside cylinder snifting valves upside down. This has now been corrected - thank goodness I hadn't fixed them very well in the first place! The inside valve has also now been attached, probably a fraction low as the mounting hole had to fully in the...
by Dave Holt
Sun Jan 10, 2021 9:12 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Not much modelling over the weekend, but the cylinder relief valves are back on and clear the combination levers. I've also added a representation of the exhaust passage ways inboard of the front valve chests so that the vacuum relief or snifting valves can be fitted. Strangely, two rather nice N/s ...
by Dave Holt
Thu Jan 07, 2021 12:47 am
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

The remainder of the valve gear has been assembled and fitted. No clashes detected so that's a good outcome. That said, without the driving axle springs in position, the coupling rods do hit the rear cross member of the valve gear support frame near top dead centre, but since it's not required to ru...
by Dave Holt
Mon Jan 04, 2021 8:42 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Thanks, gents, for the supportive comments. I suppose it is where experience comes in when these sorts of problems occur. And it's useful to have spare bits from previous models just lying around waiting to be needed! I'm now back to somewhere near to state before I noticed the problems. Thankfully,...
by Dave Holt
Mon Jan 04, 2021 10:28 am
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Morgan,
It's an awful long time since I built the Jubilee chassis but I can't recall any particular problems with the valve gear - and mine is in forward gear, too - although at a fairly short cut-off.
Dave.
by Dave Holt
Sun Jan 03, 2021 8:56 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Houston, we have a problem! Well, several problems, actually. As shown in the photo, now everything is in place, there is interference between the combination lever and the rear cylinder relief valve, preventing the wheels turning to front dead centre. Obviously, something is wrong. Scot_130.JPG As ...
by Dave Holt
Fri Jan 01, 2021 10:30 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Happy New Year to all.
The front portion of the outside valve gear is now complete and fitted to the cylinders and support frame. The two latter have been joined into a single removable unit.
Scot_129.JPG

And, just to prove I have done both sides:
Scot_128.JPG

Dave.
by Dave Holt
Mon Dec 28, 2020 9:13 pm
Forum: Lord Colnago
Topic: From a Loco Works in Norfolk
Replies: 73
Views: 28967

Re: From a Loco Works in Norfolk

I'm no expert on things Western, so I'm happy to be proven wrong, but the castings look to me like standard GWR type which were also adopted by BR as their live steam injectors. The large part attached to the sprue goes at the bottom and also connects to the overflow pipe. The part on its own at the...
by Dave Holt
Sun Dec 27, 2020 9:36 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Thanks, Mike. Don't hold your breath! Hope everybody had as good a Christmas as possible under current restrictions. I certainly did. Today has been very much a case of a step forward, a step back and another step forward again, so a bit of progress overall. The mountings for the reverser shaft have...
by Dave Holt
Thu Dec 24, 2020 9:14 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Not too much modelling right now, mainly due to domestic Christmas preparation duties, but a little progress has been achieved. The detached inner valve gear support members have been fixed in their new positions, much closer to the outer ones. The openings in the front of the support frame have had...
by Dave Holt
Tue Dec 22, 2020 8:46 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Thanks, John. A start has been made on the outside valve gear. I need to make up the expansion levers to determine the correct position for the inner supports which I earlier removed from the valve gear support frame. Experience with another of these models showed that the inner frame members, as et...
by Dave Holt
Sat Dec 19, 2020 6:39 pm
Forum: Steam Locomotives
Topic: JLRT/Geen/Mitchell 4575 kit - Progress
Replies: 14
Views: 1370

Re: JLRT/Geen/Mitchell 4575 kit - Progress

John.
A very impressive recovery and looking good for further progress.
It does seem a bit odd for the kit to provide no backing support for area of such thin overlays. Perhaps there's a few bits missing from your example?
Best wishes for Christmas and New Year.
Dave.
by Dave Holt
Sat Dec 19, 2020 2:59 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Work has progressed on the cylinders. Except for the drain cocks - the castings in the kit are disappointing and nowhere near as good as those in the Black 5 kit, so will have to be replaced - the cylinders are now complete and the piston rods have been added to the cross-heads. A bit more work is r...
by Dave Holt
Sat Dec 12, 2020 3:05 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Other than some fettling and cleaning up, the bogie is now finished and trial fitted. Bogie ready to fit: Scot_115.JPG Scot_116.JPG And fitted to the chassis. Boy, are those rear wheels close to the brake hangers. I can see some judicious paring away of the front edge of the hangers. Scot_117.JPG Da...
by Dave Holt
Fri Dec 11, 2020 8:40 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

A bit of progress has been made with the bogie, in amongst writing and posting Christmas cards. The things that get in the way of modelling! It's been more of a struggle than it might have been. I couldn't find the side control springs and arranged with Brassmasters to obtain a replacement set. Whil...
by Dave Holt
Wed Dec 09, 2020 4:11 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

The slide bars have been fixed to the cylinder frame, ensuring they are square to the cylinder faces in all planes. A trial fit shows the top bars to sit nicely in the support bracket. The connecting rods and cross-heads run smoothly, without any clashes.
Scot_112.JPG

Dave.
by Dave Holt
Tue Dec 08, 2020 1:50 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Whilst trying not yo overload the finger tip, I decided to make a representation of the exhaust steam passageways between the three cylinders and the smokebox saddle using plastic card, laminated where necessary to represent the required thickness. Not too sure why I've bothered with this detail as ...
by Dave Holt
Fri Dec 04, 2020 9:16 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Thanks, Paul. Not much modelling just now. I've acquired a small but very painful cut near the tip of my left index finger - might have caught it with the piercing saw but can't remember doing it. It's making it too uncomfortable to try to grip parts between finger and thumb as any pressure on the f...
by Dave Holt
Wed Dec 02, 2020 10:45 am
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Thanks for the kind words. I must admit, I'm rather pleased by how it all fits and runs smoothly, considering it's mishmash of parts from left over etches and a few scratched bits.
Dave.
by Dave Holt
Tue Dec 01, 2020 2:52 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Ivan, you're quite right. The lack of diagrams in this kit does make it more difficult to assemble. The written instructions are very comprehensive and there are a couple of sketches, including the dreaded valve gear frame, but there have been a couple of areas where I haven't been sure which way ro...
by Dave Holt
Mon Nov 30, 2020 4:25 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 163
Views: 21698

Re: Brassmasters Rebuilt Royal Scot, 46109

Thanks for the comments and commiserations. Continuing with the valve gear frame/bracket, a substantial tie bar has been fixed across the front to hold the sides together once the centre section of the front plate is removed. On the real thing, this plate across the frames does not exist, with the e...

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