Hello everyone, and welcome to another update from us at Quorn. Its been another wet and windy one, so no signwriting for Dave, but plenty achieved otherwise! Before we get down to business, I should plug our Instagram page for those of you that are that way inclined, it’d be greatly appreciated if you followed us over there!
Having looked at the weather forecast, we decided (after speaking with the signalman) to hand shunt the Lowfit onto the middle road to start the repairs to its vacuum train pipe. You may remember that after renewing its vacuum cylinder, the subsequent test found that the train pipe was holed under the north end headstock.
With only three clamps securing the train pipe, quick order was made of releasing the bolts, either by spanner or hot spanner and then getting the pipe supported where it could be worked on.
Even though I said that there was no signwriting for Dave, he did manage to get the vacuum release star on the solebar of 3621, however decided after that to cease, owing to the fact the drizzle was washing the chalk marks away.
Back to the pipe then: the holed end was cut off and a new stub end found. This was clamped to the good metal in the train pipe, then Charlie and Ernie welded the joint together. Once the pipe had been welded, the pipe was scraped and wire brushed then it was moved into the back of Nick’s lorry to paint.
Ernie continued the welding on the vacuum cylinder removed from the Lowfit, heating the patch and knocking it down to close the gap, then welding round the seam. There is still some work to do on this and it has been moved inside the garage to give it an opportunity to dry!
Dave made a start on a different vacuum cylinder dome recovered from the fish van body. This was removed from one of the Esso tanks, maybe 3711. There was no chance of it holding vacuum, but with a new dome, there was a good chance it would go again. Dave cut most of the old dome off the cylinder, then he and I started grinding the weld to remove the final half inch left.
Tom removed the cast owners plates from 3854, which will be replaced with the 3D printed plates by Dave. After removing the plates, Tom then applied some primer to the bare metal.
In the back of the lorry, I pressure tested the repaired pipe using compressed air as any leaks from this are easier to find than with vacuum. Some small pinholes were found in the weld joint, so the pipe was removed for re-work.
Ernie ground out the defects and re-welded the pipe, after which it was pressure tested again with no leaks present. However a leak was found in the tee off for the vacuum cylinder, so that was ground out and re-welded. Nick coated both areas in red oxide primer.
Once we had got the dome sited in the cylinder, Ernie tacked it into position and got ready to weld the outer seam, which he then did.
Mark, Oliver, Tom and Dan got started needle gunning the solebar and side panels of the Lowfit, making excellent progress.
The 3D printed plates also received a coat of primer and undercoat.
The pipe was re-fitted back to the Lowfit and the vacuum system tested. The cylinder worked perfectly, however the hoses put on for the test may have contributed to the leak off test failing. The wagon will be fully re-tested prior to release to traffic.
The Lowfit was shunted back and the opportunity taken for a skip trip in Danny after a general tidy up. Dave remains ever hopeful of the opportunity to do more signwriting on 3621, but in the meantime we’ve got plenty to do repairing vacuum cylinders and other odd jobs in between!
See you again next week! Cheers, Ross.
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