Tender springs for a Titfield Thunderbolt tender

Discussion in 'G1/32' started by Jon Nazareth, 3 March 2018.

  1. Jon Nazareth

    Jon Nazareth Western Thunderer

    I'm looking for some springs for the tender of my Titfield Thunderbolt. The springs need to be about 21mm long and so, I thought that I'd try the G1 boys. Does anyone know of a supplier of small springs? They don't have to be exactly the same.

    Jon
    P-001.jpg
     
  2. Overseer

    Overseer Western Thunderer

    Try MMP 7mm wagon springs. The length will be about right and there are a choice of number of leaves available. I think the phosphor bronze used is a bit thick for 7mm so it could be just right for the larger scale.
     
  3. Jon Nazareth

    Jon Nazareth Western Thunderer

    Overseer
    I seem to have left out the fact that these are for a G3 model but in this case I don't think that it matters as it is the length that is the critical thing. By the way, who are MMP? I did look on Google but couldn't find anything.

    Jon
     
  4. daifly

    daifly Western Thunderer

  5. Jon Nazareth

    Jon Nazareth Western Thunderer

    I have looked and the are not quite the thing and I'm now looking at G1 tender springs. The ones on Thirtysecond's C Class look promising.

    Jon
     
  6. David Halfpenny

    David Halfpenny Western Thunderer

    Here's a very crude (laptop camera) image of the two tender springs in G1MRA's Members' Shop:

    G1 Tender Springs.jpg
    If it looks promising, I'll bother to dig out a camera.

    If you aren't a G1MRA member yet, I can pop some in the post to you as I can stock up again at the AGM.

    Other tender springs are available - if nothing else these buttermetal castings give you a feel for the scale.

    [Sometimes, the quickest thing to do is sit down with a strip of brass and just make the *ing things - there's only four of them :) ]
     
  7. Spitfire2865

    Spitfire2865 Western Thunderer

    Jon, are these springs supposed to be structural, or would 3D printing be an option?
     
  8. Jon Nazareth

    Jon Nazareth Western Thunderer

    David
    That looks interesting but, I need the spring on it's own. I did try chopping up a 7mm spring but realised it would be too much like hard work. If I made them myself, it would mean making 35 leaves, 7 leaves to a spring plus 8 yoke type spring hangers but, if all else fails, that may be the only route to take.

    Trevor
    That sounds promising. I'll have to look out what drawings that I have and get back to you.

    Jon
     
  9. David Halfpenny

    David Halfpenny Western Thunderer

    If you slice-up the casting on the right of my picture to get 22mm long springs, it means making a grand total of 12 cuts, plus making 8 hangers.

    Either way, Jon, if you'd made a start straight after your post today, you'd have finished the job before lunch :) D1/2d
     
  10. Arty

    Arty Western Thunderer

    These any good, G1 whitemetal ?
    spring2.jpg
    sring3.jpg
     
  11. Jon Nazareth

    Jon Nazareth Western Thunderer

    Richard
    They may have been but I've ordered some via Trevor Young and Shapeways. I've ordered some in plastic and some in brass, I'll post some pictures when they arrive.

    Jon
     
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