Dapol Class 73s…into traffic!

March 28, 2017

No. 73 108 in late condition, photographed at Eastleigh in 2002.
Faded, dirty but still doing its stuff on the SE TPO.

No. 73 108 is one of the locomotives I have chosen to model using one of the two new Dapol models to recently arrive on Folkestone East. Conversion to EM turned out to be the simple, involving the regauging of the split axle wheel sets which have a good profile on them – good enough to run smoothly through my hand built track.

There are many well-thought out technical features of this model. The body lifts straight off after releasing the retaining screws – no pesky clips to fight. Don’t loose the screws though or you will be scr*wed when it comes to putting the body back. There is a good space for both decoder (nearest) and a sound speaker. A 21-pin socket ensures all lighting features have power.

The circuit board makes contact with circuits in the body by means of a row of sprung contact pins which eliminates linking wires and plug and sockets. However, I did not want the cab lights illuminated and was looking to fit a decoder with ‘stay-alive’ (‘keep-alive’) . The only one I had to hand was a wired LaisDCC one which works well with this mechanism. 21-pin versions with stay-alive are also available. I also wished to work the head code lights independently using red LEDs, so decided to remove the circuit board and hard wire a LaisDCC decoder in place with its stay-alive capacitor. The lighting connections to the circuit board are easy to locate and desolder, so this hard wire DCC conversion is easily reversed – the circuit board being stored away safely.

The image above shows the hard wire installation, with the head light LEDs wired with 5k Ohm resistors to reduce the fierce light to something a little more realistic. Connections will be made with the head code box LEDs too.

A stay-alive unit is seen in this image. It was not quite powerful enough to power the Dapol Class 73 when it lost contact through those pick-up bearing rings. In the end, I built a new stay-alive unit with some higher Farad rated capacitors with great success. The higher rated unit was still connected to the same LaisDCC decoder. It is worth mentioning that even the smallest capacity stay alive unit will prevent light flicker in the most reliable models even if there’s not enough juice to deal with a serious stall. In many instances, the flywheels fitted to modern mechanisms will carry a loco over a minute dirty spot without interruption,. The only hint of a problem will be a flickering of LED head and tail lights. Stay alive units also smooth the operation of locomotives that otherwise seem to run well.

A final look at the DCC installation. It may seem strange to remove the convenient 21-pin DCC interface. However, wired decoders offer so much more flexibility in terms of organising lighting effects and this installation turned out to be quick and effective. The model is numbered 73 108 with an address of 3108 and is now hauling trains on Folkestone East. It is at this point I must admit to keeping two Lima EDs, stripped of drives and in the process of being reworked with Dapol detailing parts. One is No. 73 129 ‘City of Winchester’ which is used as a trailing unit in the SE TPO so the train can be top and tailed. Two Dapol EDs on this train is overkill. The second loco was also a regular on the SE TPO: No. 73 131 which will eventually be refinished in EWS livery.

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Dapol Class 73s in OO gauge.

March 27, 2017

A long term plan to replace my Lima Class 73s (EDs) with the new Dapol one is finally getting underway with the acquisition of two brand new models, both labelled as No. 73 138. One will be renumbered No. 73 107 and the other No. 73 108. Once in traffic (one is being run-in on the layout at this time) they will be supplemented with two more, to become 73 107 in plain grey  and 73 131 in EWS livery.

There is much to commend this model, despite the mixed reception it has received. It does look like an ED, even though I have some slight reservations about those front cab windows. I think the deep set head code panel actually causes the optical illusion that there is something not quite right when in fact they are probably pretty close. Some people have commented on the strange cab lighting arrangement, something I dislike and will isolate as part of the commissioning work.

Comment has been passed on the poor paint colours, particularly the rail blue versions, even though livery application in its self is pretty smooth. The yellow on my models is slightly the wrong shade (probably faded yellow) and who decided to colour match a sun faded roof? If you are modelling these locos in 2000s condition, that roof colour is not at all bad. However, for one in early to mid 1990s, the faded yellow and roof grey are no right at all – the grey should be executive dark grey. Also, by the time 73 107, 108 and  others reached  that stage of sun fading, they were pretty grubby!

My assessment of the models is not to give a critical review, but to look at them with regard to their use on Folkestone East. Tests with the first model to be commissioned (to become No. 73 108) shows that one will manage the South East or Dover-Manchester TPO single handed without any difficulty, even on the 1% incline up out of Martello Tunnel. Two Lima ones in multiple could not manage even the short 6-coach SE TPO on that short climb on the layout. The Dapol models are not particularly heavy, but demonstrate some excellent tractive effort and are very sure-footed on the track. They will make few demands on my hand built track formations.

The etched grille work and fine details are superb. Just superb. The overall shape is very good too, except perhaps the slightly over emphasised cab roof sagging (seen to vary slightly from loco to loco and depending on the angle and lighting of any photographs). No matter, the shape is more than fine with me.

Yes, it looks like an ED. Now, I have to get it running on EM gauge track like an ED before starting cosmetic work on the livery. When opening up the bogies, I discovered split axles with ring bearing bushes used to collect current through the inner section of the axles, so a stub-axle design with bogie frame mounted contacts was not used – to my advantage as it turned out.

Axle bush current collection is not a great design because such bearings also have to be lubricated and even so-called conductive lube can collect dirt which eventually prevents current from being conducted through to the internal circuits. However, the big boon, and I really mean this, is that the assembly of the split axles to large final drive gears with big and durable bosses allows easy regauging to EM gauge and that is where the lack of stub axles was very helpful. Once regauged, the axles still gripped the gear moulding well and the wheels are of such a nice profile as to run through EM track smoothly without any harsh clicking.

Adding Dapol EDs to the fleet has been both easy (wheels) and difficult (pick-ups). I decided to adopt stay-alive technology and a rigid wheel and bearing cleaning programme to avoid having to fit cumbersome wiper pick-ups to see if that would do the trick. When it came to fitting a decoder, I was really impressed with the ease of removing the body. Undo the screws and the body simply lifted off – no struggle, no clips to mess about with, no connecting wiring. There’s bags of room for a decoder and a special location for a digital sound speaker. I must admit, where some modellers see room for a speaker, I see room for stay-alive! More on DCC installation soon!

 


Work restarts on Folkestone East

March 26, 2017


After mothballing the layout for 18 months whilst I worked on other projects, I have finally flung the dust covers off the layout and started to deal with some problems with it (I admit to making a pig’s ear of some aspects of the layout, ears which now need to be rectified). Operating wrinkles also needed to be ironed out too.

The first job involves the original laser cut turnouts which made up the curved cross-over at the Ashford end of the layout. This junction, which provides access to the harbour branch turn-back roads and yard, is the most critical on the layout. Using laser-cut turnout bases and glued chairs is a good technique and looks great too except for one thing: they are not durable enough for a heavy duty main line hosting a frequent train frequency. As a facing pair of turnouts on the main line, they were becoming badly damaged by the heaviest locos in the fleet, namely my Heljan Class 47s. At nearly 750g each, they were knocking six shades of hell out of that cross-over to the point they no longer worked properly and repairs were impracticable. New ones of more durable soldered construction (see above) were built at the work bench and installed in January.

A plan to remodel the unsuccessful western end of the layout was in mind anyway, so turnout replacement fitted well with the building of some flats based loosely on Lawrence Court just off the Dover Road together with remodelling the scenery and modifying the back drop to make room for the partial low relief buildings.

During the 18 month period of storage, further information regarding a row of brown-brick buildings (predominantly hidden behind weed trees on the line side) became available, buildings which turned out to be the Lawrence Court flats. Winter-time images with trees bare of leaves revealed how dominant these low-rise flats actually are at this location. Whilst the real main line on which this layout is inspired is dead straight in this location, I have to live with a curve as it is located at the end of the room! There’s no extending the layout through the wall and into my neighbour’s field without objections from the sheep and other practical difficulties! The flats were nearly complete by the time I found the time to write this blog entry. They fit on the curve of the layout quite well, being partial low-relief buildings. Ideally, they should be set a little further back from the line, but the curve in the track makes placing the buildings tricky. Once the landscaping around and to the rear of the flats is complete, trees will be added to the line side once again partially concealing them.

The Up platform will be reinstated and track work reballasted and fitted with conductor rails once again. As part of this project, the signal box project has made a giant leap forward. Some adjustment to the back drop by moving it back by 3 inches and changing its shape a little has provided more room for the signal box (as well as the flats) which is moved east a little further to better position it in relation to the prototype location. Oh, yes, I must mot mention the retiring of the faithful Heljan 47s in favour of Bachmann ones (less damaging to the track) and the introduction of Dapol Class 73s (one picture above) which are gradually replacing my venerable Lima ones. More of the signal box, remodelling and the commissioning of the Class 73s later!


In many ways…

March 19, 2017

…I am sorry that events have brought us to this…alienation of our friends in Europe by the British Government closely allied to a pig-headed determination to push Scotland down the hard Brexit path when so much could have been done to involve us in negotiations and retain access to the single market.

Independence for Scotland is now the only way. For me, I am growing cold on a second referendum too. I think the best course of action now is to convene a National Assembly and declare a formal unilateral declaration of independence or UDI.

703


Colonialism is a Crime

March 19, 2017

Freedom to choose is a right enshrined in international law with its inclusion in the UN Charter in 1945. Article 1 of the Charter states that one of the purposes of the United Nations is: “To develop friendly relations among nations based on respect for the principle of equal rights and self-determination of peoples.”

With regard to Scotland, it looks increasingly apparent that the British Government is in violation of that law.

Grouse Beater

703Molto grazie! An Italian newspaper devotes its front page to Scotland as “Europe’s Hope”

  • International law does not recognise the construct “Once in a generation”.
  • The British government, represented by their prime Minister Theresa May, her lickspittle lackey David Mundell, only Tory MP in Scotland, and Ruth Davidson, leader of the Scottish wing, tried to frustrate the mandate of the people of Scotland.
  • Having rejected proposals from the Scottish Government for Scotland to remain in the single market, refused joint negotiations with Brussels – we are supposedly in a ‘Union’ with England – Scotland is now told to take a hike.
  • There is a name for ruling over people while preventing them from being part of the political process that governs their lives. It’s called colonialism.
  • In international law, it is a crime against humanity.
  • Describing a constitutional debate as “divisive” – the most recent propaganda ploy to silence the debate –…

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