Search found 445 matches

by John Palmer
Tue Mar 26, 2019 1:21 am
Forum: Signals and Control Systems
Topic: Arrangement of levers in a signal box
Replies: 11
Views: 423

Re: Arrangement of levers in a signal box

A bit of a deviation from the original topic, but since the Jim, the OP, has raised the question about collars I guess he won't mind a bit of thread drift. Post mortems on the accidents at Hawes and Quintinshill reveal the extent to which what was regarded as safe practice in railway working was (an...
by John Palmer
Fri Mar 22, 2019 12:56 am
Forum: Signals and Control Systems
Topic: Advice sought on point rodding routing
Replies: 7
Views: 383

Re: Advice sought on point rodding routing

Lovely photo Tim, Not knowing anything about the junction, it would appear there is one line less used (dull railtops) than the others - do you know why? Andrew The dull railtops are the line running into the up side platform at Ashton Gate station, reduced to siding status. Trackplan: http://brist...
by John Palmer
Mon Mar 18, 2019 11:43 am
Forum: Operating in Practice
Topic: Operational entertainment...
Replies: 34
Views: 5163

Re: Operational entertainment...

Photographic evidence suggests that at Bath Queen Square/Green Park the dining/kitchen cars on certain long distance trains took on gas from a gasholder truck which the station pilot had to position adjacent to the car in question. I have no idea whether such 'en route servicing' was exceptional, bu...
by John Palmer
Mon Mar 18, 2019 11:20 am
Forum: New Products
Topic: SCC - Sparkshot Custom Creations
Replies: 261
Views: 36787

Re: SCC - Sparkshot Custom Creations

Knuckles wrote:2 foot rule for me on most things.

And me. If only I could exercise the self-discipline to stick to it. Good post.
by John Palmer
Mon Mar 18, 2019 11:15 am
Forum: New Products
Topic: SCC - Sparkshot Custom Creations
Replies: 261
Views: 36787

Re: SCC - Sparkshot Custom Creations

What are the options for 3rd-party door furniture these days? I seem to remember etched T-handles and loop-handles being available back in the '90s. https://www.roxeymouldings.co.uk/category/63/4mm-scale-etched-accessories-by-roxey-mouldings/ . For a South of England prototype, all the variety you ...
by John Palmer
Mon Mar 18, 2019 12:26 am
Forum: Steam Locomotives
Topic: Wide-cab Drummond T9, non-superheated - allocations for last four
Replies: 5
Views: 263

Re: Wide-cab Drummond T9, non-superheated - allocations for last four

You've probably looked at this already, but http://www.semgonline.com/steam/t9class_dat.html gives some sparse data both on tender pairings and allocations. 307 and 312 are given as Stewarts Lane allocations in June 1924. First allocations given for the other two are August 1937: 302 at Eastleigh an...
by John Palmer
Sun Mar 17, 2019 1:05 am
Forum: Railway Buildings
Topic: Carriage loading docks
Replies: 74
Views: 3488

Re: Carriage loading docks

Even though Fowler's works were on the LMS (Midland), the strange-looking van behind the engine, which we might assume to be part of the job, is marked "NE". The photo was taken on 19th June 1925 I'm reasonably confident that that van is a Pooley & Sons' weighing machine adjustment va...
by John Palmer
Sat Mar 16, 2019 1:18 pm
Forum: Railway Buildings
Topic: Carriage loading docks
Replies: 74
Views: 3488

Re: Carriage loading docks

Well, if a BB1 is too big to remain within gauge on a Rectank then it's also going to be too big to do so on the F1, F3 and F4 road roller trucks, all of which had a railhead to bed dimension of 3' 6", which is only a fraction of an inch less than the same dimension on a Rectank (3' 6 and 5/8&q...
by John Palmer
Sun Mar 10, 2019 4:12 pm
Forum: Steam Locomotives
Topic: Locomotive fire irons
Replies: 14
Views: 835

Re: Locomotive fire irons

Probably an exceptional case, but the Kings, with their long, narrow fireboxes, required irons some 14 feet in length! Once you have put the dart through your firebed I can't see an alternative to swinging it through 180 degrees in order to return it to its place of rest on the tender. You certainly...
by John Palmer
Sun Mar 10, 2019 3:32 pm
Forum: Semaphore Signals
Topic: Mystery apparatus at Radstock
Replies: 8
Views: 714

Re: Mystery apparatus at Radstock

Steve, thanks for identifying Mel Roberts as the ultimate source of the information about the gainstroke device and, of course, my thanks too to Mel himself for this. Having taken a look at other S&D signalling layouts I have formed the view that Radstock West Down Distant must have been the lon...
by John Palmer
Sun Mar 10, 2019 2:09 am
Forum: Semaphore Signals
Topic: Mystery apparatus at Radstock
Replies: 8
Views: 714

Re: Mystery apparatus at Radstock

I passed this query on to to a friend with an interest in the S&D, who in turn circulated it around an S&D group. I offer the following response from a retired S&T engineer in that group. "It is a Gainstroke Lever, used where there is an excessive pull of wire to a remote signal. I...
by John Palmer
Thu Mar 07, 2019 4:27 pm
Forum: Semaphore Signals
Topic: close up photos of GWR tubular signals
Replies: 13
Views: 668

Re: close up photos of GWR tubular signals

Looks like the standard GWR contact enclosure, most probably for a repeater of the signal's aspect in the signal box. The lamp has no backlight blinder, but does have wires, so it appears that the signal is not visible from the box (or someone is being extra cautious) and has repeaters for the lamp...
by John Palmer
Thu Mar 07, 2019 1:59 pm
Forum: Semaphore Signals
Topic: close up photos of GWR tubular signals
Replies: 13
Views: 668

Re: close up photos of GWR tubular signals

Simon_S wrote:Just curious, what's the rectangular box with wires going in to it?

Looks like the standard GWR contact enclosure, most probably for a repeater of the signal's aspect in the signal box.
by John Palmer
Thu Mar 07, 2019 11:22 am
Forum: Semaphore Signals
Topic: Mystery apparatus at Radstock
Replies: 8
Views: 714

Mystery apparatus at Radstock

Having been delighted by the discovery that 223 of Ron Toop's S&D photographs have been put online at https://www.flickr.com/photos/midsomer-norton-south-station/sets/72157629882634822/page1 , I've been poring over a particular favourite shot of mine taken from Tyning's Incline at Radstock, and ...
by John Palmer
Mon Mar 04, 2019 3:15 pm
Forum: On My Workbench
Topic: Exactoscale Transfer Box - 4GB 112A
Replies: 2
Views: 388

Re: Exactoscale Transfer Box - 4GB 112A

Steve, I have instructions for an Exactoscale 2:1 single stage reduction box with product code GB003. Not quite what you asked for, but may assist. I've scanned this into pdf format but can't see a way of attaching the pdf file either to a private message or the forum-provided email page. If you thi...
by John Palmer
Sat Feb 23, 2019 12:42 pm
Forum: MarkS
Topic: 1P 0-4-4T chassis by Rumney
Replies: 38
Views: 5401

Re: 1P 0-4-4T chassis by Rumney

On the attached drawing extract I've marked in red my take on the cross-section of the ashpan that was originally intended, and in green the version finally adopted. Following my previous comment on the absence of a back damper, closer examination of the GA drawing also tells to me that the draughts...
by John Palmer
Wed Feb 20, 2019 11:39 am
Forum: MarkS
Topic: 1P 0-4-4T chassis by Rumney
Replies: 38
Views: 5401

Re: 1P 0-4-4T chassis by Rumney

On the kit, the ashpan seems to go too far back, and I thought that it was unlikely the main brake pivot rod went through the ash pan as this photo shows. (Note: the brake piston can be horizontal or vertical) A word of warning: unless you have a photograph proving me wrong (entirely possible!), I ...
by John Palmer
Sun Feb 17, 2019 5:03 pm
Forum: Wagons
Topic: Suitable paint for goods vehicles
Replies: 12
Views: 677

Re: Suitable paint for goods vehicles

I use Tamiya "IJN Grey" to represent LNWR goods grey. Ah but that begs the question "which IJN Grey?" The Naval Arsenals at Maizuru, Kure and Sasebo used different greys in ascending order of darkness. In addition the Yokosuka Naval Arsenal used a fourth gray which has been said...
by John Palmer
Sun Feb 17, 2019 9:56 am
Forum: Track and Turnouts
Topic: Modelling loose heeled switches in 4mm
Replies: 34
Views: 2285

Re: Modelling loose heeled switches in 4mm

The switch illustrated by Dave K causes me some concern, given the proximity of the tongue rail to the stock rail in the area I've indicated by a yellow ellipse: GWR Loose heel switch.jpg I would expect flange backs to strike the outer face of that tongue rail as they pass through - shades of Grayri...
by John Palmer
Sat Feb 16, 2019 1:42 am
Forum: Where to Find?
Topic: Brecon & Merthyr
Replies: 3
Views: 314

Re: Brecon & Merthyr

David, the Taff Vale & Dragon Models pricelist at http://www.taffvale.wales/price.php contains an entry for Brecon & Methyr transfers, but has them marked 'NLA'; presumably No Longer Available. However, there's also the following note: "Note: We have depleted stocks of transfers, now on...
by John Palmer
Mon Feb 11, 2019 12:17 pm
Forum: MarkS
Topic: 1P 0-4-4T chassis by Rumney
Replies: 38
Views: 5401

Re: 1P 0-4-4T chassis by Rumney

Mark, if you don't already have it I highly recommend you to lay your hands on a copy of Wild Swan's 'Midland Engines No.1' profile, which covers the 1833 and 2228 class bogie tanks. Your 1823 class engine is substantially identical to the 1833s, the difference being the raising of boiler pressure f...
by John Palmer
Sun Feb 10, 2019 1:33 am
Forum: MarkS
Topic: 1P 0-4-4T chassis by Rumney
Replies: 38
Views: 5401

Re: 1P 0-4-4T chassis by Rumney

Perfect, that's exactly the information I need. Adding the 4mm value to half the diameter of whatever drill I use should get the CSB wire to exactly the right pitch - thank you very much, Justin. This is looking promising. I have taken an hour or so to machine six delrin bushes and found no difficul...
by John Palmer
Sat Feb 09, 2019 3:41 pm
Forum: MarkS
Topic: 1P 0-4-4T chassis by Rumney
Replies: 38
Views: 5401

Re: 1P 0-4-4T chassis by Rumney

Tim, I estimate between 8X and 10X full size. :) I have a question for Justin or Pete as to the queried dimension on this image: 2228 Bogie query.jpg I take this to be the pitch of the CSB wire above the bogie wheel centre, and by scaling the drawing in the instructions into a CAD drawing showing th...
by John Palmer
Fri Feb 08, 2019 3:02 pm
Forum: MarkS
Topic: 1P 0-4-4T chassis by Rumney
Replies: 38
Views: 5401

Re: 1P 0-4-4T chassis by Rumney

Most of the components for the vacuum regulator are fairly straightforward turning and boring exercises, so the two I've so far made have been scratch-built. The tricky part to make is the trunnion/lever assembly projecting forwards from the top of the regulator valve housing. One day I'll manage to...
by John Palmer
Thu Feb 07, 2019 3:25 pm
Forum: MarkS
Topic: 1P 0-4-4T chassis by Rumney
Replies: 38
Views: 5401

Re: 1P 0-4-4T chassis by Rumney

Oh dear, it appears I should have researched more deeply and opted for the Gibson Deeley door, which certainly looks better in the pictures on that linked thread. Possible the door hinge-straps are a trifle on the wide side, but in terms of depth and proportions of door and angle ring it's not bad. ...

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