Finney7 LSWR L12

Discussion in 'Workbenches, including workshop techniques.' started by Dikitriki, 22 August 2017.

  1. Tom Mallard

    Tom Mallard Western Thunderer

    I think it is more to do with the width of the platform or 'box' the crew stand on rather than the width of the footplate where the stanchion and sandboxes locate. That would be applicable to a T14 for example. A wide bodied T9 would use a similar arrangement to the L12 compared to the narrow bodied T9

    Tom
     
  2. Steph Dale

    Steph Dale Western Thunderer

    Tom,

    Agreed, the wooden part of the footplate is wide, which would normally be matched with a wider footplate that the stanchions bolt through. I was only picking up on the width of the metal bit. The 'wings' would have been visible from their shadow cast.

    Steph
     
  3. Dikitriki

    Dikitriki Flying Squad

    I hope this one passes muster!

    P1010426a.jpg

    P1010427b.jpg

    Again, the rear of the top has been split to allow for R/C access. The filler makes a nice handle!

    And the 2 together. At least I have a head start on the T9 now.

    P1010425a.jpg

    Richard
     
  4. Dikitriki

    Dikitriki Flying Squad

    Continuing my mad dash to get the tender on its wheels for Reading.....

    First the tender footplate and drag/buffer beams.

    P1010434a.jpg
    P1010435a.jpg

    I have cut the buffer stocks off inside the rear buffer beam, as they would have been very visible, and reduced the length of the buffer ram for the same reason.

    P1010436.JPG

    At the front end I have added strengthening angle in the corners (as I did at the rear end) and added a strengthening strip behind the front step plate. It makes it much less vulnerable at the half-etch step locations to clumsy pick up. This unit screws in to the tender top.

    The chassis is a separate screw-on unit. There is a lot of detail to go on, but that will wait until after the show.

    P1010432a.jpg

    P1010433a.jpg

    Now for the bogies.

    Richard
     
  5. Dikitriki

    Dikitriki Flying Squad

    Bit of a late night, but I have the tender on its wheels.

    The basic bogies are simple affairs.

    P1010440.JPG

    P1010441.JPG

    The springs and bearings repay careful cleaning up and straightening, though they are prone to break where the rod from the bearing goes into the spring. No matter, it's easier to clean up and can be readily soldered on in two parts.

    P1010442a.jpg

    This is the rear bogie which has the guard iron. To get the ride height to match the loco, I had to add bearing pads to the top of the bogie stretcher.

    P1010437a.jpg

    That's as far as I'm going for now. The tender is short on detail, but it passes muster for display purposes.

    I'll now clean the loco - it's had a lot of handling over the last few shows, and then unite loco and tender for the first time.

    Richard
     
  6. Dikitriki

    Dikitriki Flying Squad

    And for the first time, I can show the whole loco:)

    P1010444a.jpg

    It will be on that stand tomorrow.

    Richard
     
  7. Dikitriki

    Dikitriki Flying Squad

    Hi,

    Back on the L12, I want to get it running tomorrow.

    I have prepared all the radio control gubbins. It all fits in the tender on screw in brackets. There are 8 AAA batteries which should give 3 plus hours running time. Not being particularly experienced with R/C, I just carefully followed the wiring instructions....and was mightily relieved when it worked!.

    P1010478a.jpg

    P1010481a.jpg

    That's compact enough to fit in most tenders pretty easily I reckon.

    Richard
     
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  8. Yorkshire Dave

    Yorkshire Dave Western Thunderer

    Have you a photo of the RC gear fitted into the water cart?
     
  9. Dikitriki

    Dikitriki Flying Squad

    I'll take some tomorrow.

    Richard
     
  10. LarryG

    LarryG Western Thunderer

    This is yet another constructional article I have only just come across and it has been a joy to read through. The soldering is the tidiest I have ever seen and that is saying something seeing as there are other neat solderers on this forum. I look forward to seeing the loco painted.
     
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  11. Pencarrow

    Pencarrow Western Thunderer

    Hi Richard, excellent work on the loco. Are the etches / castings for the tender the same for those that will come with the T9?
     
  12. Steph Dale

    Steph Dale Western Thunderer

    Chris,

    Yep! ;)

    Steph (not Richard, but unusually I'm here first)
     
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  13. Dikitriki

    Dikitriki Flying Squad

    Hi,

    L12 test was generally successful.



    I say 'generally'.... It worked and went in the right direction. Haulage was particularly impressive. However, slow running is simply not good enough. I suspect that the receiver/controller's output is not giving me anything like the sort of control that I would have with DCC. I am using a Deltang RCT-Rx65c. Any ideas about what I can do to improve the slow speed response, or is there a better receiver/controller I can use? I have obviously got the tender brake shoes prototypically close to the wheels judging from the sparks:)

    Just to amplify Steph's reply; the white metal castings will be a little better than those I am using. We have refurbished the patterns and had new moulds made. In fact the axlebox and spring unit has had more detail added. Otherwise the same.

    Richard
     
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  14. Steph Dale

    Steph Dale Western Thunderer

    Richard,

    Gimme a call (once the Grand Prix has finished! :D) - I've got an idea to help with the slow speed control.

    Steph