Search found 32 matches

by NorthHighlander
Mon Jun 19, 2017 1:28 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Thank you for your further work on the pulling sequence and locking table, Keith, very much appreciated. I have amended my copy and posted in at 'The Other Place' as version 3.1.2. I'm now reading up on dog charts.... I think I might be able to get away with 4 tappet bars, in which case it could be ...
by NorthHighlander
Fri Jun 16, 2017 6:34 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Doh! I knew there was something.... nagging at the back of my mind as I published it... yes, thanks for your offer. I'll have a go at it before Sunday and perhaps you'd 'mark my work', please, Keith?? By the way, trap 19 and FPL 20 are now history and plain line on platform 2 is now restored! I've a...
by NorthHighlander
Fri Jun 16, 2017 11:45 am
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Hello Philip Yes, you are right, it's a very intense service, but on the basis of exhibition layouts needing to have some movement within no more than a couple of minutes, it's a very contrived timetable. The layout started life as a trial of Hubert Carr's Geodeck baseboard system back in 1978 and t...
by NorthHighlander
Tue Jun 13, 2017 7:28 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Yes, the Tyers instrument with the key tokens would have been given up on leaving the block section... to clarify, Keith, the LAYOUT was started in 1978, it depicts the era around 1959, so autotrains might still be pertinent... there's a philosophical argument here... if I say the model is based at ...
by NorthHighlander
Mon Jun 12, 2017 8:11 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Many thanks for the time you have taken to provide a very detailed response to my latest diagram, Keith. I have now read the document in detail and there are significant changes. When I responded on RMWeb on: http://www.rmweb.co.uk/community/index.php?/topic/48504-gwr-signals-and-where-they-go/page-...
by NorthHighlander
Tue May 09, 2017 10:14 am
Forum: Trains: Model and Prototype
Topic: Thoughts on Motors
Replies: 74
Views: 16940

Re: Thoughts on Motors

Nigel makes a very important point about the efficiency of gearboxes. I can't claim any expertise on them, but I think it's notable that the Portescap motor/gearbox combos use(d) spur gears rather than worms. I think the main problem with worms is that there has to be some play to accomodate the for...
by NorthHighlander
Mon May 08, 2017 10:18 pm
Forum: Trains: Model and Prototype
Topic: Thoughts on Motors
Replies: 74
Views: 16940

Re: Thoughts on Motors

I should add to that last sentence the paradox that we usually recommend that you choose the largest battery that you can find space for. We should also add that high quality motors with as many segments as possible, a high quality gearbox, properly lubricated and well meshing with minimum friction ...
by NorthHighlander
Mon May 08, 2017 10:13 pm
Forum: Trains: Model and Prototype
Topic: Thoughts on Motors
Replies: 74
Views: 16940

Re: Thoughts on Motors

Thank you, Jon, for your further note clarifying usefully your concerns. 2mm scale is what we call in technical terms 'a challenge'! But we intend to satisfy the many 2mm modellers who are Club Protocab members. The issue is that the manufacturers and individual modellers are somewhat hamstrung by t...
by NorthHighlander
Mon May 08, 2017 12:15 pm
Forum: Trains: Model and Prototype
Topic: Thoughts on Motors
Replies: 74
Views: 16940

Re: Thoughts on Motors

..I'm sorry, I did not include the link to the Battery University which is:
http://batteryuniversity.com/learn/arch ... y_concerns

Regards

Tony Hagon
by NorthHighlander
Mon May 08, 2017 12:13 pm
Forum: Trains: Model and Prototype
Topic: Thoughts on Motors
Replies: 74
Views: 16940

Re: Thoughts on Motors

Responding to Jon's thread, at Acc+Ess we fully understand his concerns. He is right that lithium ion can present a safety issue if handled incorrectly, but these issues have been known since the 1970s when lithium batteries first appeared. This link gives a very good summary IMHO of the issues and ...
by NorthHighlander
Mon Apr 24, 2017 12:48 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Thanks for the heads up on Kidder.. Although I can see the reasons why the SVR would have wanted to have everything under sbox control, and it may have been a Railway Inspectorate requirement, it would have made good theatre for the visitors to watch the fireman releasing the loco under g/f control....
by NorthHighlander
Sun Apr 23, 2017 7:47 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Re one of Keith's statements in his very welcome write up: "Secondly the value of signals 25 and 27 is obscure, if 26 and 28 are ground frames as shown then the man on the ground (shunter or guard) will control the points and give movement instructions, to use the signal he would have to be abl...
by NorthHighlander
Sun Apr 23, 2017 7:40 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Some excellent replies, many thanks.. Drat time on the platform end gantry, Keith... I have already made up (quite a few years ago) a two arm gantry with what is now shown as signals 16 and 19 at the ends, so moving 19 inboard to accommodate the shunt signal 18 to its left is going to be a grrr mome...
by NorthHighlander
Sun Apr 23, 2017 3:49 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

I've had a good look at your very detailed document, Keith and thank you so much for taking the time to compile it. Herewith my responses, which are more in way of acknowledging my errors and omissions... I shall be at Scaleforum this year, so I certainly owe you a drink at the very least! Penhafod ...
by NorthHighlander
Sun Apr 23, 2017 1:59 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

...sorry, addendum to my last, I meant 'assume that the crossovers don't need FPLs in the trailing direction, i.e. the point on the Goods Loop South.' I understand that the platform point would need an FPL in the facing direction for passenger movements, so releasing this frm the box would enable th...
by NorthHighlander
Sun Apr 23, 2017 1:56 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Great replies, Keith and John, thanks for taking the time.. I'll look at your notes, Keith in a while. Re the engine release crossovers, yes it makes sense to release the GF from the signal box and have local handsignals (it also throws up two spare levers in the box which I'll need if, as seems to ...
by NorthHighlander
Sun Apr 23, 2017 10:11 am
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Hi Keith
Yes, I put the diags on RMWeb because of a thread I found there that had some very useful replies from the Stationmaster and, since I didn;t work on the WR either, I wanted to make sure there are no howlers in the signalling... thanks for offering to look at the arrangement..

TH
by NorthHighlander
Sat Apr 22, 2017 9:30 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Progress steady during the week... Firstly, I have now drawn up the signal box diagram which looks like this: signalbox diagram_filled.png This is my stab at the locking table and I'd be grateful for any expert who wants some fun and with my thanks to criticise or comment before draw up the tappet t...
by NorthHighlander
Tue Apr 18, 2017 9:27 am
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Thanks for the additional info re the autocoaches. Bearing in mind that the branch from Trehafod to Penhafod Upper was 1:50 for nearly a mile, the locos would have to be chimney first up the branch, so the autocoach would be propelled from Ponty to Machen... I've dusted off the file I created back i...
by NorthHighlander
Mon Apr 17, 2017 7:27 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Tony H... (a good name and initial!) no, there are some dodgy halves trying to sit down on the rivets, but there aren't any inside chairs as far as I can see, but I will do something about those chair halves..
by NorthHighlander
Mon Apr 17, 2017 7:25 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Yes, Keith.... when I first started the layout, I was following Bernard Weller's guide notes and I used the perforated brass strip captured by the rivet under the sleeper and a fairly chunky dropper wire soldered to it... there is a forest of these droppers under the board! I don't now need insulate...
by NorthHighlander
Mon Apr 17, 2017 6:51 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Thanks for the notes.... in order: Thanks for the update, Chris... although we all travelled to Ponty in the early and middle fifties, I was too young to remember anything prior to around 1958, so I can't really remember any of the RR 0-6-2Ts, certainly not the autocoach from Ponty to Ynysybwl but I...
by NorthHighlander
Sun Apr 16, 2017 8:02 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

... it's a very short switch... probably an A switch which back in 1978 I would have chosen because it was the shortest not because it was the most appropriate.... 5 slide chairs are probably adequate for that without looking it up..
by NorthHighlander
Sun Apr 16, 2017 4:00 pm
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

Well, I only had the one in mind, Tim,and it doesn't include the ones that aren't sitting properly because of the Brooke-Smith rivet... I'll have to remedy those...
by NorthHighlander
Sun Apr 16, 2017 11:01 am
Forum: Layouts and Operations
Topic: Penhafod Upper - 1978
Replies: 57
Views: 10734

Re: Penhafod Upper - 1978

"Since the PC&N lost its sole passenger service [provided by a 64XX plus an autocoach in its latter days] fairly early in the 1950s in reality, perhaps you could extend it to run Penhafod Upper to Machen, change for Newport..." Ah, a good idea, Noel... done and the WTT amended accordin...

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