Friday, 31 December 2010

Point operation

In the build up to this layout, point operation was always going to be one of my first major hurdles. How to set the distance between the switch blades accurately was something I was struggling with especially when working to P4 standards. My previous attempts go back a number of years to copperclad points with a sleeper sized tiebars. I now wanted a more realistic solution. I understood that the switch blades would twist slightly when moving, this movement would, in time, break any solder joint on the blade unless there was some built in flexibility between the blades and the device used to move them. Even though I'd read many descriptions of different solutions, I still struggled with how best to go about it and which materials to use. It was not until I'd discussed my problem with two guys from the P4 group that I started see how to put a solution together. Also having access to layouts in the local area group has helped, I've been able to look, listen, and hopefully, learn.

My method is nothing ground breaking, all ideas have been borrowed from other modellers. I decided at an early stage to adopt Tortoise point motors and install all motors under the baseboard using Exactoscale's Tortoise Mounting Plates which gave me the horizontal motion. I just needed to decide on how to transfer this horizontal motion vertically through the baseboard to the switch blades.

Also a couple of guys stated that on their P4 layout they used 16.5mm as the distance between switch blades. This sounded too narrow to me but in checking dimensions it seemed OK for the centre to centre measurement between blades. My rough calculations are - P4 standards state a distance of 17.47mm between outer faces of the check rails - in reality on my points this has become 17.38mm - minus 0.9mm for width of rail gives a nominal 16.5mm. No doubt purists will put me right but at the moment it seems to work for me.

Hopefully the diagram below will help to explain the following verbal description.

I've used 0.5mm brass wire for the wire droppers soldered to the blades. Both wire droppers are bent slightly so that they are vertical to the centre of the blade when they pass though the baseboard. I then drilled the motion arm from the Tortoise mounting plate with two 1.5mm holes at 16.5mm centres. The hole was drilled to pass though the arm. Into each hole I then glued a 13mm length of 1.5mm brass tube. An 18mm length of 1.0mm brass tube, with an internal dimension of 0.5mm, was then soldered into the 1.5mm tube (18mm being the distance from the base of the motion arm to the top of the balsa wood track base). When installed, this will leave just the 0.5mm brass wire passing though the ballast layer. To help with installation when threading the motion arm onto the wire droppers under the baseboard, I cut the wire droppers to different lengths, 24mm and 22mm. When fitted, the wire droppers will protrude through the motion arm which means that the motor cannot be directly under the point but will be offset to one side of the point under the baseboard.


Elements described above ready for installation.

It is all very simple really..........that is, once you know what to do, what to use and how to use it.

Wednesday, 29 December 2010

Additions to my Reference Library

While viewing St Merryn at Scaleforum with my partner and having discussions with a couple the SLAG guys the book below was purchased. Unfortunately for me I had to wait until Christmas Day to get my hands on it.


We have spent the last few days away visiting family but in quiet moments I've managed to skim read through most of the book, picking out a number of helpful tips in the process. I will need to read the book in more depth but it comes across as one that any budding P4 modeller (or possibly any modeller) should have in their collection. It is especially useful for myself due to the area in which St. Merryn is based covering many aspects that I need to consider: differences in track in the area; LSWR tiebars; Bachmann 45xx conversion to P4; Airfix 'B' Set conversion/detailing; Cornish hedges; layout lighting; and stock boxes being just a few. St. Merryn is a fine example of P4 modelling by an accomplished group of modellers and the book is written in a easy friendly style that should encourage rather than discourage. If it had gone into more detail it may have become a tome of information but unfriendly, certainly to the P4 newcomer. It is one book in my library that will not spend much time on the shelf.

The second book that Santa brought me was Colin Marsden's, 'The Diesel Shunter'.


This was a book that I discovered a couple of months ago while kicking my heels in Lincoln waiting for a new timing belt being fitted to my car. Apparently fitting the timing belt was a specialised job requiring special tools which non of my local garages had, so a trip to the main Peugeot dealer was arranged. I had to wait about 4 hours and while browsing W.H. Smiths I came across the above book. Having very little knowledge of anything relating to BR shunters, knowing I will need an 03 and an 08 for Tredethy Wharf, I immediately thought 'I need that one'. Unfortunately the dust jacket was damaged so, noting down the ISBN number, it was one destined for my Amazon Wish List. Then, when searching on Amazon, I realised that it was out of print...... second hand fetching a price far higher than its RRP. After mentioning this to my partner she came up trumps again by making a visit to W.H.Smiths to purchase the book, apparently getting a good discount in the bargain.

The little lady is a true treasure.

Friday, 24 December 2010

A barren few weeks

I recently had a gentle reminder that I haven't posted an entry for a while but the title of this post says it all really. To progress the layout I needed a few items from Squires and Exactoscale. There was some confusion with the Squires order, all down to me I hasten to add, which delayed me finding the items by a couple of weeks. Then I posted the Exactoscale order which took a respectable fortnight to arrive.

While waiting for the above orders to arrive a WWII war game was arranged. This awoke some interest in looking though my mass of unpainted lead and I was side tracked a little by a couple of gaming projects. First a building that had been languishing in a box for many a year. I slapped a little paint on it and after gaining a feeling of achievement, I then picked up a second building to complete. One thing led to another and before I knew it I'd also started and finished a German artillery unit. Wargaming has definitely taken a back seat during this last year and I was gradually loosing interest in picking anything up to paint or finish off. So it was good to get stuck into some old projects that had been hanging around for far too long. I think it has also helped to clear and refocus my mind on the railway project. As they say 'a change is as good as a rest'.

With a little bit of luck I'm back on track (pun intended). I'm definitely not on schedule as I had hoped to have finished laying the track during Christmas with wiring completed and something running. I have made a start on finishing the switch blades for the second point, and now the extra bits from Exactoscale have arrived, I can start on the final point. A little progress has also been made on the 7 plank wagon but not enough to shout about. I've also been looking at some Bill Bedford W irons to see where I've gone wrong in folding them, more of which later........

May I thank all who have read this blog during the last year and for the encouragement and comments left. I truly hope you all have a happy and memorable Christmas.

Friday, 29 October 2010

Track at Baseboard Joints (part 2)

A further report on method 3 from my previous posting......

Not sure if this has been done before but it is only a twist on the plywood and rivet method. At the baseboard edge, holes have been drilled through the plywood sleepers, and through the balsa underlay into the plywood track base. Then 20mm long panel pins have then been pushed and lightly tapped into place.

Panel pins in place

Pin heads were cleaned with a light rubbing of a file and then tinned with a little solder. The underneath of the rail was also cleaned with a file and tinned before soldering the two together. I still need to apply cosmetic chairs to cover the joints. My soldering technique has been a little dodgy of late but after a little demonstration the other evening from a P4 area group member (Gordon), I'm hopeful that these joints will hold.

The start of the next point with chairs and rail in place.

As can be seen from the above photo, I'm going to trial plastic chairs glued directly to plywood sleepers on the opposite side of the baseboard joint to this point. If these fail I can always revert to another method..............

Saturday, 23 October 2010

Film Show

I was at Grimsby library today to peruse a photographic exhibition put on by North East Lincolnshire Photographic Society. There were some fine photographs on display all by local amateur photographers. While browsing some posters in the entrance to the library I noticed the following event that might be of interest to some locals in the North Lincolnshire area.

At Cleethorpe's Memorial Hall on Thursday 11th November there is a 'Grand Film Show' titled 'Railways Remembered - Along LNER Lines'. Starting time 7:30pm but cannot remember who is presenting the show nor the ticket price. I remember the poster stating that the film show has a special tribute to the GCR and something about Immingham Docks, possibly the opening ceremony in 1912.

I've searched the web to check my memory and found nothing about this event.......typical.... should have taken a photo of the poster.

Sorry about only having half the information.....hope the info is of use to someone.

Saturday, 16 October 2010

Track at baseboard joints

On arriving home yesterday evening I had the surprise of finding a nice bulky envelope containing two Ultrascale wheel conversion packs. One for another Bachmann 8750 Pannier (to be 4694) and other for a Bachmann Class 08 Shunter. Better get my next order placed......... AND place my order for some 08 cranks that are being etched by my local P4 area group (Hi guys... could I have three sets please?).

As for progress on the layout............. my evening modelling time has again been difficult to find recently but track laying is progressing on the plank, all be it very slowly. One thing I've been struggling with is how to secure track at baseboard joints. I've been mulling over options and it looks like I'm going to trial at least three different methods.....


Method 1) At the joint at one end of the layout I'm trying C&L's Baseboard End Track Protectors. They look like they will work well but I'm a little concerned about the width of these protectors and the difficulty in disguising them. At the end I've chosen they are the perfect width for soldering the running rail and check rail to. This end they will also vanish under a covering of hard standing. I may be able to disguise them at the opposite end of the layout but at the middle joint I'm not sure how I can without extending the hard standing area across the baseboard joint.


C & L Baseboard end track Protectors (C1012)


Method 2) One suggestion that has been made by a member of my local P4 group is copperclad sleepers and brass chairs. At the moment I'm not that keen as, so far, no matter how hard I've tried I have not yet been able to paint a copperclad sleeper to match the wooden ones. I'm still going to give this method a trial on the layout though.


Brass chairs and copperclad sleeper


Method 3) I'm also thinking about hammering some panel pins into the plywood track sub-base through pre-drill wooden sleepers. Rail can then be soldered to the head of the pin and cosmetic chairs applied.


Pin and rail test solder

I'm now going to set myself up to be shot down in flames by all those who have much more experience than me. So here goes............


Method 4) With all the above said I still have a thought about using plastic chairs glued to wooden sleepers at baseboard joints. My theory is.....as the glue joint between chair and sleeper will be a weak point any damage should at least leave the sleeper and ballast intact. The above three methods would possibly stand rougher handling but any damage might be drastic. Not only would there be damage to rail and chairs but there might also be damage to sleepers, ballast and possibly the balsa underlay. With plastic chairs any damage should only require the rail and any damaged chairs removed then new rail and chairs installed. Hmmmm..... not sure if I'm brave enough to give this a try though................ I'll wait for the sound of those guns being fired..........


Hopefully with the longer evenings setting in I'll manage a few more hours each week and a few photos of my meagre progress.


Friday, 15 October 2010

NCR timetable time/distance graph

I've recently wangled a couple of lunch breaks and managed to create a time/distance graph for my North Cornwall line timetable. It's not complete as I still need to confirm workings to/from Mawgan Porth but it has thrown up a couple of anomalies.

The first anomaly was the Up 11:30 goods train passing the ACE between Launceston and Tower Hill. This must have been a problem created by using timetables from different periods. I've altered the timing of the goods slightly by shortening its stay at Launceston so that it reaches Tower Hill just before the ACE. Not sure if this is correct so if anyone has a 1961 goods timetable for the line please let me know.

The second anomaly was with the Down 7:15 Halwill departure which, when compared to other down trains, seemed to take too long to travel between Tower Hill and Launceston. I've double checked the 1961 timetable and the times are correct. My only assumption is that the timetable does not show the arrival time at Launceston it only shows the departure time. So I've altered this to have a 13 minute stop at Launceston, to drop off newspapers and parcels.

Neither of the anomalies have affected what I'm trying to do at Grogley Junction and the surrounding area but I like to try to get things as correct as possible with what information I can find (please note I did say 'try').


The thought of creating a time/distance graph had not occurred to me until Micky suggested it in a recent comment. Creating one has shown how valuable these graphs are to confirm timings for timetables. From now on I'll be trying to use one or more time/distance graphs while creating a timetable for the local workings around Grogley Junction.