Restoration diary

Myself, Sarah and Toby the dog attended site and the usual weekender Dave was there when we arrived. Dave spent the Saturday erecting a shelving unit the group acquired courtesy of one of our volunteers employers (enough said) and having a general tidy up.

We spent the day working on assessing our KV10's. A couple were found to have damaged PCB connectors, I have found a source for acquiring replacements.

The worst KV10 was dismantled to use a template to check the remaining units and to provide spare parts.

A list of spares needed is being compiled and all parts sourced so repairs can be carried out prior to transporting the KV10's and associated PCB Control Cards for testing.

Following a recommendation from The Fifty Fund I made contact with a Mr Noel Craigen, a former Technical Engineer with experience at various British Rail Traction Maintenance Depots, to assess and test our KV10s and Control Cards.



For those who are not in the know a KV10 regulates the voltage of either the Main Generator or the ETH Generator and are otherwise known as CU3 & CU6 respectively (each Class 50 locomotive uses two KV10 units). Each KV 10 has a pair of Control Cards that need testing and pairing also.



I met Noel at Rowsley on Saturday and we carried out an initial inspection of the KV10's and associated Control Cards. Noel has confirmed prices to carry out electrical and function tests as necessary. Once I have ensured any visible damage or missing parts have been repaired/replaced the KV10s will be transported to Yorkshire to Noel's premises for the tests and necessary repairs  to be completed.

This is another important stage of the electrical and control work underway.

Preliminary discussions have been engaged in with a good contact who can overhaul KV10s.  RRRG has a good number of both KV10s and their control cards in our possession but we have no idea if any or all of them are actually serviceable!  For the uninitiated, a 50 has two KV10s: one controls the main generator field strength and the other the ETH generator field strength - the difference being the control cards in the KV10 which define its function (main or ETH generator).  We understand this same contact can overhaul CU1 control units (the "master brain" of a 50) and we hope to have more news on these electronic component overhauls in a month or so.