Home.Layout.Construction.Buildings.Operation.Electrics.Rolling Stock.Gallery.Exhibition Data.A1 Partworks.
Copyright Robert Else 2010©

Different methods of controlling the point were considered and experimented with. The solenoid methods didn’t provide enough force to overcome the stiffness of the blades and it didn’t control the point. I really didn’t want the expense of the slow acting motors, but nothing I tried came close to my requirements. So slow acting motors it had to be. The two types I looked into were Tortoise or Fluglux. The main over riding factor here was the amount of clearance under the board. Limited to 45mm. So the Tortoise types were out, and the fluglux motors used. The other important feature I wanted to incorporate was point Roding. The initial thoughts were to mount all the motors under the signal box location and run the roding out from there. It very quickly became apparent that this was not a practical solution so they had to be mounted under the point they operated. The control rod from the motor to above the board in 1mm brass rod sleeved with suitable brass tube. On the top of the board, the emerging brass rod was soldered into an adjustable crank as supplied by C&L Finescale. A block of styrene was first fixed to the board before any ballast was laid and a brass mount fixed to that. Once the crank was lined up and the operation was correct. The other end was connected to one of the stretcher bars on the point. When using the adjusting crank the amount of throw of the point blades can be changed to account for operation.

Point rodding during construction

Point rodding once completed - also shown are the signal wires

Main Point Construction