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Build Diary entries for October 2021

Here are the diary entries for this month. You can use the forward and backward links to see the next or previous months. Most photos taken before 2018 are small size. From 2018 onwards, most photos you see below will have a link to a full size image by clicking on the photo.

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Bogie Assembly Trial Fit
04/10/2021
  Highslide JS
  Today was the first trial assembly of the bogie frame; Chris and Bob take a breather from our efforts. We still have to fit the AWS receiver stay between the lifeguards - we have this in stock. SSLC's Monday Gang have been trained in use of the overhead crane at CTL Seal which makes the job a lot easier
   
Bogie Centre Slide Testing
11/10/2021
  Highslide JS
  The bogie pivot pin, bolted to the main frames, engages in a bush within the bogie centre slide. The centre slide is able to move laterally while being restrained vertically by plates with a bevelled edge (V strips on the drawing). The movement of the centre slide is resisted by side control springs. This set up smooths the locomotive's entry and exit form curves as well as reducing flange wear on the driving wheels. We need to ensure that the centre slide can move left and right and does not bind on the bogie stretcher. Today we slowly lowered the centre slide into place checking that clearances are adequate. Here the centre slide is just above where it will sit on the wear plates while John checks clearances. We believe that a further 3 thousands of an inch need to be machined off the centre slide vertical face as clearances are a bit tight in places. The centre slide is being lifted by large magnetic lifting eyes. On the centre slide you can see the 4 bosses for oil lubrication pipes.