Search found 259 matches

by Dave Holt
Mon Sep 28, 2020 11:32 am
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Brassmasters Rebuilt Royal Scot, 46109

Well, I have finally got round to making up the coupling rods - and the connecting rods, too. I've also been working on the crankshaft and eccentric. The former is in final assembly stage whilst the latter is ready to fit once the crank is finished. Here are the rods and eccentric. The eccentric is ...
by Dave Holt
Mon Sep 21, 2020 8:30 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Brassmasters Rebuilt Royal Scot, 46109

Well, it turned out not to be the coupling rods next. I decided to assemble the MJT gearbox conversion instead. The replacement sides were tried in place using the brass rod originally used to align the inside cylinder as it was the right size for the frames and the gearbox sides, prior to fitting t...
by Dave Holt
Sat Sep 19, 2020 2:05 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Brassmasters Rebuilt Royal Scot, 46109

The reverser linkage and shaft for the inside valve gear has been fitted, as have the bogie mounting spacer and ash pan sides. The bogie mount has had to be altered to give clearance for the inside cross head and drop link. The ash pan sides are replacement for the kit items because 46109 had a rock...
by Dave Holt
Mon Sep 14, 2020 10:06 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Brassmasters Rebuilt Royal Scot, 46109

Thanks Howard. Glad you're enjoying the ride. Well, I've committed now; the inside cylinder has been fixed into the frames. The motion plate is still loose, but the layer that located the rear ends of the slide bars has been attached to the plate and the central hole opened up to allow the cross hea...
by Dave Holt
Sat Sep 12, 2020 4:38 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Brassmasters Rebuilt Royal Scot, 46109

The inside cylinder has been trimmed to fit between the frames, the slide bars fixed to the cylinder and the whole lot trial fitted in the frames. Nothing soldered, yet. A simple jig has been made to help align the cylinder/slide bar assembly with the centre line of the front axle and is seen in sit...
by Dave Holt
Fri Sep 11, 2020 11:22 am
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Brassmasters Rebuilt Royal Scot, 46109

Although this is still not my intended next job, some further progress has been made by assembling the frames. You'll notice I've also changed the title of this thread to reflect its new status. A few modifications, especially to the keeper plate/springs unit, to accommodate the inside crank and ecc...
by Dave Holt
Mon Aug 31, 2020 8:56 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

Bullet bitten and con rod created. It went from this: Scot_021.JPG Two layers of the Brassmasters Fowler 4F rods (their model uses large eccentrics rather than a crank axle to provide some cross head motion), to this: Scot_022.JPG Component parts laid out on the jig used to assemble the rod with the...
by Dave Holt
Fri Aug 28, 2020 1:26 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

The eccentric rod, expansion link and radius rod have now been assembled. Nothing accidentally soldered solid for a change!
Scot_020.JPG

Con rod next, perhaps?
Dave.
by Dave Holt
Thu Aug 27, 2020 11:04 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

Some progress and a bit of a set-back, today. The eccentric rod has been made by modifying the rods from the Brassmasters Fowler 4F valve gear etch. The length has been reduced and a pivoted arrangement provided so the rod can fit over the eccentric sheaves allowing the crank axle to be fitted and r...
by Dave Holt
Wed Aug 26, 2020 10:36 am
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

A start has been made on the inside valve gear with the production of some of the rods and assembly of the front portion of the gear. The anchor link is from a spare Brassmasters Black 5 etch and the combination lever and radius rod are from the same source, but modified by cutting the laminations t...
by Dave Holt
Sat Aug 22, 2020 9:27 am
Forum: Steam Locomotives
Topic: Martin Finney V2
Replies: 67
Views: 7880

Re: Martin Finney V2

Doug,
When weighting the loco, especially where the weight is in the boiler, do take care to get the balance of the loco right as it's very easy to make it front end heavy, by packing the boiler and smokebox. Much harder to get weight behind the motor/gearbox.
Dave.
by Dave Holt
Mon Aug 17, 2020 8:13 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

Some progress over the past few days since the drop in temperature has made the modelling room more habitable. The support bracket for the expansion link has been made and is seen here loosely placed in position on the motion bracket. It's dimensionally right but only representative in detail. Scot_...
by Dave Holt
Mon Aug 17, 2020 8:00 pm
Forum: Steam Locomotives
Topic: Martin Finney V2
Replies: 67
Views: 7880

Re: Martin Finney V2

Glad you're not modelling either of them in that condition.
Looks like good progress is being made but, as you say, finding out how and where for some of the smaller details are arranged can be quite difficult.
Dave.
by Dave Holt
Fri Aug 14, 2020 11:56 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

The inside crosshead, complete with the drop link has now been made. It is based on a Brassmasters brass casting from the Fowler 4F kit, modified to provide the drop link necessary of the Scot inside motion. The resultant item is not strictly a scale replica of the actual part, but is an approximati...
by Dave Holt
Mon Aug 10, 2020 1:16 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

The first component for the inside valve gear has been produced. But what is it? Scot_003.JPG Well, it's the support bracket which carries the inside gear reverser wey-shaft and the lifting arms. Here it is roughly (very) placed against the main frames. It will be attached to a narrow frame space wh...
by Dave Holt
Wed Aug 05, 2020 9:28 am
Forum: Chassis and Suspensions
Topic: Loco bogies
Replies: 7
Views: 765

Re: Loco bogies

DaveB, you're absolutely right. On Stanier and BR Std bogies, the inverted leaf spring buckle bears on the underside of the bogie top stretcher casting. This, in turn, bears against the underside of the loco main frames, via a pair of cup and hemispherical bearing pads. As you say, the springs hold ...
by Dave Holt
Tue Aug 04, 2020 7:11 pm
Forum: Chassis and Suspensions
Topic: Loco bogies
Replies: 7
Views: 765

Re: Loco bogies

The compensated bogies under my Stanier and BR Standards, transmit the load direct from the external equalising beams to the loco compensation system. As with the real thing, the bogie frames carry no weight and simply keep the axles in the right place and allow pivoting and side movement. Very ligh...
by Dave Holt
Mon Aug 03, 2020 1:12 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

Still at the plotting and scheming stage. As part of this process, I've marked out some key reference points for the inside valve gear on the main frames. A friend turned some centre locating buttons, which a a good push fit into the etched axle bush holes in the frames, to enable the axle centres t...
by Dave Holt
Mon Jul 27, 2020 8:43 pm
Forum: Steam Locomotives
Topic: Brassmasters Blk5 45232
Replies: 228
Views: 29429

Re: Brassmasters Blk5 45232

Well, not much done since the last posting. However, the loco now has its identity and has now been dismantled to component parts prior to painting. I've been putting this off as I hate to take the models apart having completed the construction - it seems like such a backward step. Still there's no ...
by Dave Holt
Sun Jul 19, 2020 11:07 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

Morgan, The webs were made by a colleague from the P&O group who has some small machine tools. The material is 1/16" thick ground mild steel. The axle and pin holes were drilled and reamed in a vertical mill, which he had intended to mill the web profile. However, it turned out his machine ...
by Dave Holt
Sat Jul 18, 2020 1:24 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Re: Future Project?

All good suggestions, but actually it's for a Brassmasters Rebuilt Royal Scot. Still at the early planning stages, but it's already apparent I'm going to have to make some significant modifications to the kit to accommodate inside valve gear. A major issue is that the kit design for the outside valv...
by Dave Holt
Sat Jul 18, 2020 9:37 am
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 27
Views: 3330

Brassmasters Rebuilt Royal Scot, 46109

Mmmm. Wonder what this might be in aid of?
Crank_001.JPG
Crank_001.JPG (154.9 KiB) Viewed 2988 times

Just loosely assembled at the moment.
Dave.
by Dave Holt
Thu Jul 16, 2020 8:00 pm
Forum: Steam Locomotives
Topic: Brassmasters Blk5 45232
Replies: 228
Views: 29429

Re: Brassmasters Blk5 45232

Mark is probably right about the coal, but I have seen photos of locos prepared for holiday excursions to Skegness or Scarborough piled high at the start of their turn, so that was the basis. Might have overdone it a bit but it's been like that for about 20 years, so I'm not inclined to change it no...
by Dave Holt
Wed Jul 15, 2020 11:25 pm
Forum: Steam Locomotives
Topic: Brassmasters Blk5 45232
Replies: 228
Views: 29429

Re: Brassmasters Blk5 45232

Thanks for the kind comments, gents.
David, I'll be in touch shortly.
Dave.
by Dave Holt
Wed Jul 15, 2020 10:30 am
Forum: Steam Locomotives
Topic: Brassmasters Blk5 45232
Replies: 228
Views: 29429

Re: Brassmasters Blk5 45232

An executive decision was made - fixed W/M buffers! BM_Blk5_45284_161.JPG BM_Blk5_45284_162.JPG The tender is now complete and has temporarily been connected to the loco. The latter has had some fine strips added to the rear edge of the fall plates, to bridge the gap to the tender. BM_Blk5_45284_163...

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