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by grovenor-2685
Tue Jun 15, 2021 1:00 pm
Forum: Signals and Control Systems
Topic: Recreating a Facing Point Lock via electronic locking...
Replies: 12
Views: 492

Re: Recreating a Facing Point Lock via electronic locking...

MERG kit PMP27 does this, each deals with 4 servo controls which can be on different Servo4s so use them for the facing points that need locking both ways and rewire the levers for those points to use the SPDT momentary contacts, still use the FPL lever to supply power to the point lever, then locke...
by grovenor-2685
Tue Jun 15, 2021 11:48 am
Forum: Signals and Control Systems
Topic: Recreating a Facing Point Lock via electronic locking...
Replies: 12
Views: 492

Re: Recreating a Facing Point Lock via electronic locking...

We have an already developed circuit within MERG to convert a servo4 to work with pulses for both directions of movement, that would probably be the simplest way.
I'll look up the relevant info later.
by grovenor-2685
Mon Jun 07, 2021 7:43 pm
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

martin goodall wrote:(which, on the approach to a branch terminus would be a Fixed Distant).

Might be a fixed distant depending on company practice at the time concerned, you can't extrapolate from recent GW practice.
by grovenor-2685
Mon Jun 07, 2021 12:17 pm
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

But if the train sees the home off as soon as it comes into view he is likely to assume that he has been cleared through and accelerate again then be caught out by the starter being on. This being the scenario that rule 39A is intended to prevent.
by grovenor-2685
Mon Jun 07, 2021 9:53 am
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

Rule 39a is not about checking trains it's about not lowering signals in advance of the arrival of the train where a clear run through into the section in advance is not signalled. If there is a clear run through into the section in Advance then signals are pulled off before the train arrives. IMHO...
by grovenor-2685
Sun Jun 06, 2021 5:53 pm
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

I'm also a bit puzzled by a rule requiring a train to be brought (almost) to a stand after its entry into the forward section has been accepted by the block post in advance. Subjecting the driver of a loose coupled train whose vehicles may be strung out over a 'sawtooth' gradient profile to such a ...
by grovenor-2685
Sun Jun 06, 2021 10:07 am
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

It was a new requirement in 1902. Indeed looking more closely at my 1892/1902 document the last sentence covering not ending in a single line was added in 1902. I rather presume that there must have been some sort of incident concerning a train held outside a terminus awaiting the clearance of the ...
by grovenor-2685
Sun Jun 06, 2021 9:33 am
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

There was no mention of this requirement in the first BOT requirements in 1858 but by 1902 it was included so somewhere in the intervening 44 years someone thought it a good idea. I've no idea if there are any records anywhere showing the development of the requirements over that period.
by grovenor-2685
Sat Jun 05, 2021 7:57 pm
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

No mention of platforms in that sentence but the platform comes in an earlier sentence in requirement 11 which says that on double lines each line must have its own platform. Interestingly by 1928 the wording is slightly modified as at terminal stations a double line of railway must not, as a rule ,...
by grovenor-2685
Sat Jun 05, 2021 6:41 pm
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

And Glossop on the GC.
by grovenor-2685
Fri Jun 04, 2021 10:29 pm
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

In the video, when the goods train stops it is described as a home, when the passenger train proceeds through it is described as an inner home. The link below should take you to the passenger train segment. A bit of mis-captioning then. There is only the one home on the layout, and it was the goods...
by grovenor-2685
Fri Jun 04, 2021 7:40 pm
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

Most likely rule 39A was in operation. ie for the goods the starter was at stop, for the passenger clear. Now I've looked at the video, firstly the station is a terminus, hence no starter, hence rule 39A is not strictly applicable, the signal concerned is described as home, not inner home and there...
by grovenor-2685
Fri Jun 04, 2021 6:20 pm
Forum: Operating in Practice
Topic: Stopping at an Inner Home signal
Replies: 44
Views: 1534

Re: Stopping at an Inner Home signal

Most likely rule 39A was in operation.
ie for the goods the starter was at stop, for the passenger clear.
by grovenor-2685
Sat May 29, 2021 12:05 pm
Forum: DCC
Topic: De-activating Cobalt iP Digital motors
Replies: 7
Views: 786

Re: De-activating Cobalt iP Digital motors

Why would you want to de-activate them?
Do you actually men to say set up the addresses?
They should work on the default address before you start to alter it. I think.
by grovenor-2685
Wed May 26, 2021 11:52 am
Forum: Track and Turnouts
Topic: What is the angle of these crossings at Garlieston?
Replies: 12
Views: 1032

Re: What is the angle of these crossings at Garlieston?

Given the radius of the curves C10 seems reasonable. Larger crossing angles and/or shorter switches would make the inner radii very tight.
by grovenor-2685
Tue May 18, 2021 9:45 pm
Forum: Serjt-Dave
Topic: In A Flap
Replies: 21
Views: 1374

Re: In A Flap

Plenty of instruction on use of fibre optics for signals in Steve Hewitt's topic on RMweb.
https://www.rmweb.co.uk/community/index.php?/topic/59687-semaphore-signals-4mm-scale-mainly/
by grovenor-2685
Fri May 14, 2021 9:09 pm
Forum: Exhibitions
Topic: Scalefour Society AGM 2021
Replies: 4
Views: 834

Re: Scalefour Society AGM 2021

The AGM has not made it into the calendar yet, maybe the times could be included when it does.
https://www.scalefour.org/calendar/
by grovenor-2685
Fri May 14, 2021 12:52 pm
Forum: Product Information
Topic: ABS Range of products
Replies: 16
Views: 2253

Re: ABS Range of products

Just type falcon brass into the search box at the top of the ebay page, you should get 25 results.
https://www.ebay.co.uk/
by grovenor-2685
Sat May 08, 2021 4:54 pm
Forum: Steam Locomotives
Topic: Brassmasters Rebuilt Royal Scot, 46109
Replies: 241
Views: 37005

Re: Brassmasters Rebuilt Royal Scot, 46109

Why not just start a new topic in this section, https://www.scalefour.org/forum/viewforum.php?f=17, where it belongs. Using the correct subforum helps others to find it, in the future.
by grovenor-2685
Wed May 05, 2021 10:47 pm
Forum: East of Scotland
Topic: Building track
Replies: 1
Views: 506

Re: Building track

Just go for it, start with the B6.
See https://www.scalefour.org/forum/viewtopic.php?f=5&t=7490
by grovenor-2685
Thu Apr 29, 2021 9:05 pm
Forum: Semaphore Signals
Topic: LMS/LNWR 1930s junction distant signalling
Replies: 48
Views: 3112

Re: LMS/LNWR 1930s junction distant signalling

Like most phasing out, a very long process, changes would only be made if the location concerned had significant work underway. On main lines such as the WCML the LMS had a policy for upgrades and renewals to the block system that involved installation of colour light distants so as that took effec...
by grovenor-2685
Wed Apr 21, 2021 7:23 pm
Forum: Semaphore Signals
Topic: LMS/LNWR 1930s junction distant signalling
Replies: 48
Views: 3112

Re: LMS/LNWR 1930s junction distant signalling

That link does not work for me and I've not managed to find the diagram on the SRS site but colour light IB signals were introduced very soon after the colour light distants so that would be reasonable, there were plenty of IBs installed in that part of the WCML.
by grovenor-2685
Tue Apr 20, 2021 11:05 am
Forum: Semaphore Signals
Topic: LMS/LNWR 1930s junction distant signalling
Replies: 48
Views: 3112

Re: LMS/LNWR 1930s junction distant signalling

That article at least gives the date when installation of colour light distants started so you can forget about them if you are in the 30s. Note that the use of 'mechanically operated' is a bit of a misnomer, the signals themselves are normal colour lights (searchlights were also tried). I think the...
by grovenor-2685
Tue Apr 20, 2021 7:45 am
Forum: Semaphore Signals
Topic: LMS/LNWR 1930s junction distant signalling
Replies: 48
Views: 3112

Re: LMS/LNWR 1930s junction distant signalling

Like most phasing out, a very long process, changes would only be made if the location concerned had significant work underway. On main lines such as the WCML the LMS had a policy for upgrades and renewals to the block system that involved installation of colour light distants so as that took effect...
by grovenor-2685
Mon Apr 19, 2021 10:16 pm
Forum: Semaphore Signals
Topic: LMS/LNWR 1930s junction distant signalling
Replies: 48
Views: 3112

Re: LMS/LNWR 1930s junction distant signalling

Must be a mighty big layout if you have room for the distants. :) I would think it likely that it would have worked splitting distants, suggest looking up a few WCML signal boxes on the SRS or Signalbox.org sites to confirm, they must have some. I don't know if the LNW went in for fixed distants at ...

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