Search found 586 matches

by John Palmer
Fri Aug 21, 2020 8:25 am
Forum: On My Workbench
Topic: A few things on my workbench
Replies: 46
Views: 3625

Re: A few things on my workbench

I've always had rather a soft spot for Bloaters, perhaps because the sliding door configuration was a quite an uncommon feature in GWR wagon design practice. Only managed to see one 'in the flesh'; this was an example that infested the S&T Works yard at Reading for everal years in the late 1960s...
by John Palmer
Sun Jul 19, 2020 2:23 pm
Forum: Serjt-Dave
Topic: Brassmaster 4F The journey
Replies: 32
Views: 4415

Re: Brassmaster 4F The journey

Dave has made a first class job of my tyro's attempt to create a suitable etching for a Whitaker Engine Exchanger, and his work on the fittings for extending the apparatus into the exchange position look as though they could be made to work! I did the design as infills on the artwork for a range of ...
by John Palmer
Sat Jul 18, 2020 1:53 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 26
Views: 3102

Re: Future Project?

For some reason I'd got it into my head that the inside cylinder on a Scot was offset from the centre line but the GA reproduced in Nock's monograph shows that I was wrong.

An interesting exercise - look forward to hearing how you get on!
by John Palmer
Sat Jul 18, 2020 1:32 pm
Forum: Operating in Practice
Topic: Hartington (Derbyshire)
Replies: 9
Views: 1618

Re: Hartington (Derbyshire)

The 1922 revision of the 25" OS map reproduced on the National Library for Scotland site shows the additional outlet from the neck onto the single line, just inside the down home signal. Alignment of track on the OS map suggests that the formation was engineered for double track, but presumably...
by John Palmer
Sat Jul 18, 2020 12:33 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 26
Views: 3102

Re: Future Project?

Crank axle for a Gresley 3-cylinder engine?

Interference fits of shafts in the crank webs? And how are you planning to set up the big end bearing?
by John Palmer
Fri Jul 17, 2020 3:22 pm
Forum: Operating in Practice
Topic: Hartington (Derbyshire)
Replies: 9
Views: 1618

Re: Hartington (Derbyshire)

I expect you've come across the photographs at http://sutherland.davenportstation.org.uk/aaprint/ash.html . The picture 'ash-64-04' is helpful as it shows quarry traffic being shunted, with what looks like an ex-LNW tender outside the brake - probably in use as a water carrier. 'ash-62-15' shows the...
by John Palmer
Tue Jul 14, 2020 11:20 pm
Forum: Recommendations
Topic: Guttering
Replies: 2
Views: 1091

Re: Guttering

The range of specialist chimney pots is also well worth a look. The crown and coronet varieties are not the easiest items to make from scratch, so I foresee myself ordering some of these. Would like some better images of the louvred chimneys; not so sure about whether these accurately reproduce the ...
by John Palmer
Tue Jul 14, 2020 11:11 pm
Forum: Jeremy Suter
Topic: Turning a chimney
Replies: 56
Views: 8670

Re: Turning a chimney

For those that can stomach it, 15 pages of discussion on parting off, dig-ins, chatter, load-induced movement of tool/toolpost/crosslide, etc, etc at https://www.model-engineer.co.uk/forums/postings.asp?th=103618&p=1 . Some particularly interesting contributions from Cabeng (well I found them in...
by John Palmer
Tue Jul 14, 2020 11:51 am
Forum: Jeremy Suter
Topic: Turning a chimney
Replies: 56
Views: 8670

Re: Turning a chimney

Terry, many thanks for that Chronos link. I feel a purchase coming on, and it's time to dust off the CAD package and work up a little drawing of how I might go about this. Going up a level from Terry's link leads to a range of additional choices, including parting blade holders that look capable of ...
by John Palmer
Mon Jul 13, 2020 3:40 pm
Forum: Jeremy Suter
Topic: Turning a chimney
Replies: 56
Views: 8670

Re: Turning a chimney

More inspirational stuff! I recall that in the golden days of Model Railways Colin Binnie contributed articles that included the use of home-ground form tools. One that particularly sticks in memory involved two pieces of gauge plate cut to an identical profile, then hardened, tempered and mounted a...
by John Palmer
Mon Jun 29, 2020 2:20 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 33
Views: 2004

Re: Kyle of Lochalsh MPD - track layout

Hi, Martin, I agree this is a hard one to call, but having engaged in a similar line-drawing exercise I come to a slightly different conclusion. When drawing my lines I try to use the maximum point of contrast in the underlying picture in order to optimise their alignment. In this case my l/h line a...
by John Palmer
Mon Jun 29, 2020 12:13 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 33
Views: 2004

Re: Kyle of Lochalsh MPD - track layout

Looking at the tandem's furthest switch in the Boyes photograph to which I posted a link, there is a pronounced set in the right hand stock rail, but I'm hard pressed to see any set in the stock rail opposite - so was this really a split deflection switch? In the MLS-copyright photograph of 1934, th...
by John Palmer
Sun Jun 28, 2020 5:12 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 33
Views: 2004

Re: Kyle of Lochalsh MPD - track layout

That Clan Goods has some ominous holes where there should be rivets holding the beam on. DaveB I thought they were likely to be the holes used for bolting a snowplough to the buffer beam. From memory, some Scottish K2s had a length of angle iron attached to the running plate adjacent to the buffer ...
by John Palmer
Sat Jun 27, 2020 4:25 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 33
Views: 2004

Re: Kyle of Lochalsh MPD - track layout

Two more shots of the coal stage from Ernie Brack's archive, the first confirming that the kickback terminated just short of the stage: https://www.flickr.com/photos/irishswissernie/49413495242/in/photostream/ https://www.flickr.com/photos/irishswissernie/49413294851/in/photostream/ . And a shot sho...
by John Palmer
Sat Jun 27, 2020 2:48 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 33
Views: 2004

Re: Kyle of Lochalsh MPD - track layout

Here are links to three more photographs that may assist as regards the kickback from the west-side shed road: https://www.ambaile.org.uk/preview/en/27630/1/EN27630-The%20turntable%20and%20shed%20at%20Kyle%20of%20Loch.jpg https://www.rail-online.co.uk/p129376112/h67FA4852#h67fa4852 https://thetransp...
by John Palmer
Sat Jun 20, 2020 12:56 am
Forum: Track and Turnouts
Topic: Kyle of Lochalsh tandem turnout length and other questions
Replies: 30
Views: 1508

Re: Tandem turnout length question

Can't produce a photograph, but the North British certainly produced drawings for diamonds and slips with partially interlaced sleepering (on the acute crossings), although they were obliged to use timbering up to 14" in width in the centre of the formation to support the K crossings. https://8...
by John Palmer
Thu May 07, 2020 6:49 pm
Forum: Track and Turnouts
Topic: Mysterious pyramid
Replies: 6
Views: 846

Re: Mysterious pyramid

Lots of interesting stuff in that photograph. Weighted detector on the connections to the turnout, and what looks like a special traffic set in the background that includes at least one Ironclad (?Diagram 213 Brake Third). But the really interesting vehicle is the one in the foreground: it appears t...
by John Palmer
Thu Apr 30, 2020 12:19 pm
Forum: Tools and Techniques
Topic: Collet chuck for lathe
Replies: 16
Views: 1208

Re: Collet chuck for lathe

The picture David has posted suggests to me that this lathe may be an example of Brian Perris' Pixi/Jason design re-worked by Ross and Alexander to offer a 2" centre height (see http://www.lathes.co.uk/jason/ ) and known as the 'New RandA. According to the linked page, "the very early head...
by John Palmer
Sun Apr 19, 2020 6:14 pm
Forum: Mark Tatlow
Topic: A Highland Miscellany
Replies: 300
Views: 99318

Re: A Highland Miscellany

Very impressed with the method for making the Midland pinnacles. That ring of wire filled with solder as the basis for the circular 'plate' in the middle of the casting has worked a treat! I can't quite make out whether you designed a notch into the profile of the pinnacle to locate the wire ring, a...
by John Palmer
Sun Apr 19, 2020 5:56 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 420
Views: 75792

Re: Brimsdown-The last grand project.

Thank you, Tony, for a really useful set of posts about wiring matters generally and the Edac connector system in particular. The scales have now fallen from my eyes as to how these work. For our Burnham layout, begun in the 1970's, we adopted for our board connectors the Belling Lee Unitor range of...
by John Palmer
Tue Apr 14, 2020 4:38 pm
Forum: Semaphore Signals
Topic: Double Distant
Replies: 2
Views: 1539

Re: Double Distant

My first thought on this was that one distant mounted above another might cover the situation where one distant related to the the block post in advance whilst the other was a 'gate distant' for a level crossing. Based on this, a quick search against 'two distant signals on same post' produced a lin...
by John Palmer
Thu Mar 19, 2020 2:56 pm
Forum: Track and Turnouts
Topic: Ground Signals
Replies: 21
Views: 1927

Re: Ground Signals

May be worth noting for the purpose of these discussions that a level crossing does not count as an obstruction within the clearing point.
by John Palmer
Thu Mar 05, 2020 1:15 pm
Forum: Starting in P4
Topic: First chassis in P4
Replies: 49
Views: 4530

Re: First chassis in P4

Thanks to Dave for confirming that his reference was to radius centre drills, and to Terry for his comments on their theory and practice. I can see that in principle they ought also to improve the centring of a component on which a taper is to be generated. As to spotting drills, an interesting arti...
by John Palmer
Thu Mar 05, 2020 12:10 pm
Forum: Other Workshop Practice
Topic: Fixing Steel Axle to Plastic Gear
Replies: 10
Views: 2264

Re: Fixing Steel Axle to Plastic Gear

Don't know whether you have seen Captain Kernow's Class 22 conversion thread at https://www.scalefour.org/forum/viewtopic.php?f=21&t=2022&p=16334 , but if not then it may be worth a look. If you intend to press steel stub axles into the nylon gear muff, as shown in that thread, then it looks...
by John Palmer
Wed Mar 04, 2020 3:27 pm
Forum: Starting in P4
Topic: First chassis in P4
Replies: 49
Views: 4530

Re: First chassis in P4

Dave, I've taken a look at the Drill Service (Horley) website but couldn't find any centre drills the shape of which was described as 'curved'. I think you are probably referring to what the website describes as 'radius type' drills but would like to be sure I haven't got my wires crossed. In partic...

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