Saturday 8th - More changes
A bumper turnout today with 28 attending, though obviously it was not possible to photograph everyone.
Beginning with TSO 4406 which currently is being shunted into the Barn as far as possible to allow Alan to continue metalwork repairs. It is taken back out at the end of the day.
In response to the query raised in the last post by Graham of Dolbran, the rivet line was created in the early days of the Mk1s. BR found that the bodyside skirting was corroding rather quickly and as such replaced the bottom six inches or so with a heavier grade of sheet metal, which was rivetted on. The bottom part of the sides generally lasts very well, with rivets replaced if required. Rust tends to form where old filler has broken out of the rivet line. We usually clean the line out, removing as much of the rust as possible and then coat with oxide or green primer. Initial filling is with fibre paste which is waterproof and this prevents any moisture seeping through from the back, which would cause ordinary filler to break out. Once the crack is filled with fibre paste, ordinary filler finishes off the repair.
Across on the jack road John adds insulation to the new pipework under SO 4798.
Ian has been doing a great job giving the main paintwork a complete sanding down.
[Photo : Paul E.] The photographer photographed during one of the periods when I was adding and sanding secondary filler to the rivet line area.
John has been fettling more of the door catches. He's produced quite a pile now, as can be seen below.
Our fish and chip evenings are definitely going up a few notches. When the Fish & Chip Specials run, Rose walks up to the station where the chip man and his team have their vans and places our orders. When ready she collects them and we settle down with cutlery, condiments, sauces and even some alcohol free beer. And this time it got even better because Rose had made a plum crumble and brought it in with some cream. Also the venue changed and we sat in the garden area by the greenhouse. All very pleasant and a great way to finish a hardworking day.
Dave does some more general sanding of the bodyside. The rusty rivet line is very obvious in the unsanded area on the left.
The north bogie has been pulled out to enable John to do his job. Meanwhile Ian goes round with the pressure oiler.
Inside the Inspection Saloon's rebuilt kitchen Bob adds white paintable sealant where needed to fill any gaps in the ceiling beading. This will then have further undercoat or top coat as required.
At the north end of TSO 4867 James will be having to make substantial repairs to the Malvern side of the roof, as can be seen in the next five photos, all taken by him.
It's all change at the south end with the toilet compartments and vestibule being completely stripped out. Robert brings out another piece, probably for keeping.
Some of the interior parts will be scrapped. Phil takes the trolley load and heads for the skip.
Chris takes this bundle for storage.
Almost finished.
Rubbish and platform cleared away.
Why such a drastic change? This coach is going to have an accessible area. It's a big job but we have already done this with TSO 4614, SO 4790 and BSK 34929.
Good progress is being made with SK 25451's body side. Filler is needed all over the side with the many craters to sort out, but the bulk of it going to ease out the area over the rivet line, which has been cleaned out, treated, and the crack filled with fibre paste as described earlier on.
Graham has been adding more filler to further ease out this bottom section.
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We have received quite a few donations of tools lately, which takes Kevin quite a bit to sort out.
Under the Mink D Paul battles to remove the accummulated rust.
Maurice completely cleans the spring clip taken from the side of the van.
I should have asked Upholstery what they were covering in the lovely silver horsechestnut leaf moquette.
Alex has at last been able to do the signwriting on the side of the sack truck. He's a very busy chap and much in demand!
The penultimate Behind The Scenes day ended with an hour long tour of C & W with yours truly taking them round. They were a lovely group and real pleasure to look after, being very attentive and asking lots of questions. The final BTS day for this year takes place in September and covers the whole railway.
Thanks for the explanation of the rivet line at the bottom of the bodyside skirting; I hope that the techniques which you all have adopted to deal with it, in the light of experience (the filling with fibre paste, etc) produces a more robust system than the original, so you all won't have to do so much repairing in the future.
ReplyDeleteThe artificial grass at the fish and chip evening looks startling (but nice), with everything else so brown. Hopefully the rain and heat will be back to normal soon, so everything can go back to its normal green.
Nice to read your considering giving FK3132 "MARY" a repaint.
ReplyDeleteThank you
John r ardin (1089)
Mentioning the corrosion problems that led to the adoption of the lower body repair, I could add a few details. As built BR tried very hard to reduce corrosion, all panels and parts were passivated, body panels were carbon arc welded and the interiors were sprayed with a thick bitumen type paint. Unfortunately gaps existed and there was some local welding that destroyed the passivation. The culprit was found to be condensation trapped behind the panelling and the lower edges being particularly prone The first solution was to weld new lower edges but this was soon found to be ineffective as the rear of the panel left bare by welding soon corroded away. The next stage was the introduction of the riveted edge (actually huckbolts) which removed heat from the equation and allowed limited anti corrosion repairs behind the "good" part of the panel..
ReplyDeletePS this corrosion problem was also behind the change to inset window frames rather than the original use of the bodyside panelling to form the frame.
The above from my experience as an apprentice in the Carriage Works and in the Carriage section of the CM&EE LMR
Malcolm in Ontario