Merryweather Fire King - a novice build

Discussion in 'A Work In Progress' started by Bob Wild, Feb 13, 2020.

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  1. Feb 13, 2020 #1

    Bob Wild

    Bob Wild

    Bob Wild

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    This thread is to describe my progress in building the above fire engine. I first came across the plans in a magazine article published in 1908 here http://www.john-tom.com/MyPlans/SteamPlans2/Fire Engine 1908/ModelEngineerFireEngine1908Small.pdf
    If you look you will see the drawings leave a lot to the imagination. So my first challenge was to produce my own using Fusion 360. Attached is my progress to date. Some time later I came across a full set of plans from a French website drawn by a guy in New Zealand! So far I’ve started on the chassis and the front suspension.
    One of the reasons for starting this thread is hopefully to get some help in stuff that is new to me. Starting with the leaf springs
    a) How on earth do I form the 4mm eyes at each end?
    b) The material used is spring steel. It is currently in the anealed state. What is the best way to harden an temper them?

    I’m attaching a few pictures of my progress so far. Also a roller bender which I made and a proper drawing from the guy in New Zealand
     

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  2. Feb 14, 2020 #2

    gg89220

    gg89220

    gg89220

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    Last edited: Feb 14, 2020
  3. Feb 14, 2020 #3

    Bob Wild

    Bob Wild

    Bob Wild

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    hi. That is really an interesting thread, which fills me with hope. The video is terrific. I was a bit apprehensive about the wooden wheels, but having seen yours I might have a go. Did you make the spokes parallel so you could feed them in easily. It looks to me as if tapered ones would be a nightmare. I’ve nearly finished forming the transverse spring. Still not sure about bending the eyes. And as I said earlier, I’ve no experience with heat treatment. I suppose a bit of experimentation is called for.
    Bob
     
  4. Feb 15, 2020 #4

    gg89220

    gg89220

    gg89220

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    hi
    heat the ends red and allow to cool slowly to soak
     
  5. Feb 15, 2020 #5

    Bob Wild

    Bob Wild

    Bob Wild

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    Thanks for the advice. But I’ll be a bit delayed as I have to take the family skiing
     

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