Thursday, 29 April 2010
Ever expanding PVA
This is from a still-born project for a Class 59/2 in P4 using a Life Like Proto 1000 PA-1 loco as a basis to provide a powerful all wheel drive model which could handle the sort of loads which the real locos could. However, two things have put pay to this.
Firstly the article on the latest ModelRail on rebuilding a 59 using Bachmann's 66 chassis as basis by one well known member of RMweb and secondly a problem with PVA...
As you can see it has expanded over the last three years and distorted the chassis frame. This problem is well documented in the letters page of Model Railway Journal but I filled the fuel tank with 'Liquid Lead' secured with diluted PVA some time before this first appeared. If I recall correctly the PVA reacts in someway with the lead causing the expansion. Here it's ruined one chassis frame but it must be heart-breaking to see one of your kitbuilt locos ruined by this. So I'm back to old methods using scrap lead flashing and Araldite!
All is not lost though, the remaining parts of the Class 59 will see reuse in the future as I would love a decent National Power Class 59 after spending hours with my dad watching them working on coal trains to and from Drax Power Station. The mechanical parts salvaged from the loco will see use much sooner - all will soon be revealed!