Tuesday, 21 February 2012

Machines for 2012...solder & shim

With all of the Machines now assembled with their required Yokes, it was now time to solder.

Everything laid out & ready to do some soldering.

Soldering & my preferences:
The Coils outer wires need to be soldered to the connectors known as Solder Lugs & the Coils inner wires soldered together.
Because all of the Coil wires have a Positive (+) current running through them, they'll need to be insulated from possible contact with the Frame which is Negative (-).
There's various products used for doing this insulation & everyone has their own preferences, I personally like a harder tubing which is commonly known as Insulation Spaghetti.

Once the Coil wires have all been soldered into place, then the Capacitor is fitted.
The Capacitor will also have a Positive (+) current running through it, so again the Spaghetti is used to insulate it's wires from the Negative (-) Frame.

Shim those Coils:
Next on the agenda was to make a start to Shim each of the Coils.
Basically you want the Armature Bar to hit the Core of Top Coil square on...
You typically do this by using a variety of thin washers known as Shims to raise the Coils up by a very small amount.
My preference is for steel Shims in a variety of sizes ranging from 0.005" up to 0.030" (0.13mm to 0.76mm)
And because each of the Frames are handmade & slightly different to the next, this means that each Coil Set will require their own individual set of Shims to get everything square.
This is just another of those time consuming jobs when building Machines, but it's one that's very important to do.

So here's the "First Batch" after another days effort completed...
...and another step closer to the Finish Line!

Another step closer to completion

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