Dog Star said:At the least we shall get to know who lives on the wild side of 7mm 8).
As a starter... those of us who are members of the S7 Group can buy gauges and jigs for S&C work, in angles of 1:5, 1:6, 1:7 and 1:8 . What do you do if the crossing angle is either not an integer ratio or is greater than 1:8? ???. For example:- the natural lead for "C" switches is 1:10 to provide a C10 turnout.... I have thought of asking our Committee if "bespoke" angles can be provided accepting that such might attract a price premium.
regards, Graham
adrian said:@JB : hopefully we can show that we are an active bunch, unfortunately I feel as though I've been letting the side down at the moment. I've just been too busy sorting out other higher priority items.
Adrian
I bought a switch blade jig before I read about S&C practices of the GWR... and then realised that the filing jig was not going to produce more than one length of switch blade... or if it does then I do not know how to achieve such variations. As a result, I now file the switch blades by eye after marking the planing length for the required type of switch blade. I guess that GWR followers are probably well suited here because there is the GWR S&C Practices bible by the GWSG and there are at least two if not three relevant papers in the proceedings of the Swindon Engineering society.phileakins said:So, I know that the Group stores has switch blade jigs and I wonder whether anyone has experience of them?
Phil
phileakins said:Anyone got anything on joggles?
Phil
phileakins said:Incidentally - I believe Brian Lewis (C&L) uses a sanding machine to produce his switch blades.
Phil
I used a slightly different method. I used a couple of flat steel strips, one either side of the rail, one to the left of the position for the joggle, the other to the right. All were placed in the jaws of a vice which was then tightened hard. The joggle was formed as it was squashed between the two steel strips - it's easier to do it than describe it!Dog Star said:To make the joggle in 7mm bullhead:- mark the stock rail on the toe side of the joggle, hold rail at right angles to long surface of vice jaws and then bend sharply away from the centre line of the turnout. [snip]
I have read - but not tried - of the idea of fixing the two steel strips to opposing faces of a hinge, to maintain the correct alignment, etc.adrian said:I used a slightly different method. I used a couple of flat steel strips, one either side of the rail, one to the left of the position for the joggle, the other to the right. All were placed in the jaws of a vice which was then tightened hard. The joggle was formed as it was squashed between the two steel strips - it's easier to do it than describe it!
Adrian