Friday, 3 November 2017

Cylinder Patterns

We received a  couple of pictures from Premier Patterns today which show the completed patterns.  Theses polystyrene patterns will shortly go to the foundry to be used in a sand mould to produce the cylinders for 27.



The completed pair of poly patterns for the new cylinders for 27 (pictures by Premier Patterns)
The cylinders will be cast fairly shortly and, we are told, delivery should be before Christmas.  Once the cylinders are on site they will need to be seasoned for a while, ideally a year , before machining takes place.  the seasoning relieves the stresses in the material and helps to stop distortion during the machining process.
The patterns from the steam chest side - the buff coloured tape seals the joints in the segments
It looks like exciting times ahead, with the frames already being worked on at Sheffield Park and the cylinders due for delivery shortly!


It seems a shame that the hard work in the design and manufacture of the patterns will be no more once the cylinders have been cast!  Still, without it we would be looking at a much longer lead time for wooden patterns and all those cores to be made too!


Hope to see as many of you as possible at the West Sussex N Gauge Club's exhibition at Angmering this weekend, if not please keep popping back to see what we are up to!


Thanks for your continued interest and support in the project without your interest, support and donations we could not continue.


Thank You

Clive D. Emsley
Chairman - The Fenchurch Fund
Project Manager - PROJECT 27
A Sub-Committee of the Bluebell Railway Preservation Society
 
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