Sunday, December 03, 2006

A problem solved


brake wire
Originally uploaded by Phil_Parker.
I think it makes sense to finish the chassis for my model Isle of Man Peacock before putting it away again. If I’m confident it is running up and down the track, I’m confident that I can finish the model. Then I can get stuck in with something else. Also if all the bits are soldered in place I can’t lose any of them can I ?

Anyway, I have the chassis trundling up and down a bit of GEM flexitrack (I think that’s what it is – it looks older than me) and decide to fit the rods and cross heads. The model continues to work but not awfully well. It’s a bit hesitant at some parts of the wheel revolution. I put this down to stiffness, iffy pick-ups or dodgy quartering. Things do seem to improve a bit as the model runs.

Then I spot the obvious. The rods are touching the wires to support the brake hangers. Not enough to jam things solid – I have been there before – but enough to make the wheel pause as it rotates.

There is no need to have the wires that long. On the finished model they need not reach as far as the face of the wheel but it is convenient to leave them longer than required while building as it saves measuring things.

Of course I have now chopped the wire back as the photo shows and the chassis runs a lot better for it. Perhaps by adding this to the blog I’ll remember next time !

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