The Kernow Kontinuum

Discussion in 'Layout Progress' started by Captain Kernow, 11 June 2010.

  1. Captain Kernow

    Captain Kernow Western Thunderer

    I've now got the 0395 goods engine to the agreed stage of partial completion with the person for whom it is intended:




    Some footage of the final test run on 'Bethesda Sidings':

    3 LINK, Geoff, cbrailways and 4 others like this.
  2. Captain Kernow

    Captain Kernow Western Thunderer

    Also started doing some wagon conversions to P4. This is one of a couple of Bachmann minerals bought by John Farmer on Ebay. I tend to either fit internal rocker compensation (MJT) to such RTR wagons or simply convert them rigid.


    I know there aren't any holes in the wheels, but John has opted for the true running qualities of the Black Beetle product and to be honest, you can't really tell.
    Geoff, cbrailways and GrahameH like this.
  3. Neil

    Neil Western Thunderer

    Very tidy work CK. Out of interest how do you decide which P4 conversion technique to use?
  4. MartinWales

    MartinWales Western Thunderer

    Neil, was'nt there an article by Stephen Williams in MRJ which described the techniques used?
  5. Captain Kernow

    Captain Kernow Western Thunderer

    Generally, it's down to a couple of factors:

    - how difficult would it be to fit springing or an outside bearing rocker unit

    - how confident am I that I could perhaps just get away with putting in lots of weight and not even compensate or spring the wagon at all

    In all honesty, I've found that trying to add springing to existing RTR wagon chassis is fraught with quite a lot of extra work and if springing is essential (which I find it not to be, much of the time, if the track is OK), then it's as easy to simply completely replace the RTR chassis with an etched chassis kit or a combination of etched springing parts and a Parkside chassis, for example.

    If I'm feeling a bit lazy (which is much of the time), then it's much easier to install an internal bearing rocker unit and keep the RTR chassis 'as is'.

    When I first started in P4, I was all for as much fidelity as possible, lots of springing and I went to some lengths to achieve this. As the years went by (and the layout still wasn't finished!), I started just converting wagons as rigid, unsprung or uncompensated, provided there was additional weight provided. As long as they then stayed on the track, I was happy.

    Some people say they can see how springing causes a heavy model loco or wagon to replicate the way that the prototype negotiates prototype track, but I'm afraid that I just can't see this (yes, I've tried!).
    Geoff, Kylestrome, Tappa and 2 others like this.
  6. AJC

    AJC Western Thunderer

    I know what you mean, Tim - I decided a while ago, that (in EM) I can build things that stay reliably on the track without recourse to springs for the most part and now cheerfully and without any guilt at all simply rewheel RTR and solder up the spring carriers supplied on sprung chassis. Dad has a slightly different view, but he enjoys the mechanical fiddling about more than I do. I will admit that his sprung 37 does look better in motion than it did before though...

    Last edited: 28 October 2020
  7. Neil

    Neil Western Thunderer

    Thanks Tim. I think I'd be far too lazy or too slow a worker to achieve anything in the finer scales with the consequent need to keep fine flanges on the straight and prototypically exact width. My earlier EM stuff was just built to ordinary OO standards with the wheels pushed out a bit. That's not to say I don't admire finer stuff, more power to anyone's elbow who takes it on, the results can be spectacular, but it's just not for me.
    Geoff and Captain Kernow like this.
  8. Captain Kernow

    Captain Kernow Western Thunderer

    Do you know, the more I look at this photo, the more I am convinced that it isn't actually Kington at all, but Pembridge, one of the intermediate stations between there and Leominster. This view is reinforced by having watched the excellent Jim Clemens footage taken on the branch in 1964 again.
  9. Captain Kernow

    Captain Kernow Western Thunderer

    Since finishing the above '0395' project, I've been working on more P4 wagons, mostly Cambrian 'Herring' kits, plus a Chivers 'Ling'.

    I've also been looking at making some more magnetic coupling poles, given that the excellent product previously sold by Lanarkshire Model Supplies is no longer available.

    I bought some very small magnets (1mm x 1mm and 1mm x 2mm) from First for Magnets, to see which was the most suitable and a shunting pole was made up with each type of magnet.

    1mm N/S rod formed the main 'pole', with a thin brass sleeve fashioned around the magnet and soldered to the nickel silver rod. The magnet itself was glued into the hollow part of the sleeve (don't try applying heat near one of these magnets, as it takes away the magnetism!).

    This was the 2mm x 1mm magnet shunting pole (both poles used pen torches that I already had):

    The tip of the longer (2mm) magnet can be seen protruding:

    In practice, I found that the larger (2mm long) magnet was a little too powerful, when used with the Smiths steel links on the end of my couplings. It was a little difficult to get the link off the magnet!

    I then made another shunting pole, this time using a 1mm x 1mm magnet, which ended up being totally encased by the thin brass sleeve:


    This proved to be much more workable and will form the basis for further magnetic coupling poles in due course.

    The reason the second pole has a bend in it, is simply due to ensuring that the magnetic business end is in the same place as the beam of light from the pen torch!
    Ian_C, Kempenfelt, Geoff and 11 others like this.
  10. MartinWales

    MartinWales Western Thunderer

    Keep us updated CK!
    AdeMoore likes this.
  11. Alan

    Alan Western Thunderer

    Just what I need . I have days when it takes minutes to couple and uncouple wagons on Blakeney using a bent bit of wire. Other times it's seconds. Thanks Tim.
    MartinWales and Captain Kernow like this.
  12. GrahameH

    GrahameH Western Thunderer

    Very often some of the best ideas are so simple and this only goes to show that with some ingenuity you can make uncoupling easier, nice work matey.
    MartinWales likes this.
  13. Captain Kernow

    Captain Kernow Western Thunderer