Stour valley dream - Introducing 'The Jogglater' - P4 point construction
Entry posted by Fen End Pit
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I got back to building more pointwork today, the first for some time. One job I always feel a bit wary about is getting the joggle in the stock rail where the end of the switchblade fits. One of the recommended ways to do this is to bend the rail twice with a pair of pliers. I've always found this a bit hard, because you need to get the two bends accurate or else you end up with the rail bent in the vertical plane and then nothing will ever run over the point correct ever.
What we are after is a rail bend like this...
I've come up with a way to do this which I've not seen written up before. I've christened is 'The Jogglater'.
All it consists of is a piece of nickel-silver with a notch about 2mm wide cut out of it, the nickel-silver is quite meaty, the material left over from an 'old fashioned' kit's mainframe etch.
The length of rail to joggle is put through the slot and positioned in a sturdy vice ensuring that rail is parallel with the top of the Jogglater which means the sides of the slot are at right-angles to the rail.
Squeezing the vice firmly makes the rail bend, putting in the necessary Joggle.
You need to make a two, one for pressing the left-hand rail and one for the right-hand rail. Once used the tools stay in the shape put you don't want to keep rebending them in alternate directions of the metal with fracture.
The final rail should then have a suitable joggle in it and, most importantly, is should continue to be straight in the vertical direction. This can be checked by holding against a flat surface, there should not be any gap between the rail and the flat surface over its length.
Then all you have to do is thread a load of chairs on and set to with the track gauges.
David
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8
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