Well after much deliberation I have decided to opt for another form of tie bar for various reasons,
1/ I am modelling the Western region in the 50's and by this time most tie bars had been changed from the rod linkage to a rectangular bar design.
2/ Reliability is one of the most important wants on my list.
3/ So I am left with the Ambis style of tie bar from C&L or the JLTRT offering.
So after trying both I have decided on the JLTRT one's, in my opinion they are more sturdy and also easier to build and a darn sight cheaper, see below.
I thought I would take a break from the p/way with a little platform construction, and as both platforms are on a curve it was not just a simple matter of plonking some wood down. On the outside curve I held a marker pen onto the edge of the buffers on my longest coach and pushed it through the proposed station area so it would leave a clearance line on the baseboard to build to. And then again the same on the inside curve with the marker pen held against the middle of the coach, this method has seemed to of worked OK so far as I want to keep the gap as close as possible.
I have used hardboard as formers and this will probably be covered in embossed plasticard with additional lasercut edgings to the platform edges. With Telford a couple of weeks away I think I will see what the traders have got to offer.
Martyn.