Well I think I have finally cracked it using my new toy ( Proxxon Milling machine ) I have managed to produce a tiebar mechanism that works appears robust ( subject to further testing) and proved relatively simple to install. The mechanism hinges on the pins as described by Geoff Jones (Dec/Jan 2009/2010) floating in a tie bar milled from square plastic rod running in plastic channel, the nut in the end is to secure the operating rod. Initial testing is very promising tomorrow I will fit a spare servo and associated electrical gubbins and conduct further testing. All in all this looks very promising although I have still to tackle the problem of the O Class’s con-rods.

Apologies to the Easitrac consortium for the dog’s dinner I made of the point but it shows how unobtrusive the Pins are.

The Business end of the mechanism
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