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Restoration diary

Reports of restoration work on 50029 and 50030.

Work party report 9th July 2023

Jay Hirst, Richard Wade and I were on site today.We fitted and reconnected the driver's side tail lamp unit, not the easiest of tasks, as access to put the nuts on the bolts is difficult under the driver's desk. We then belled out and marked all the wires from the change-end switches in both cabs. The mounting plates that hold the change-end switch...
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Work party report 8th January 2023

​Mark and Robert Burrows, Jay Hirst and I were on site yesterday. Mark and Robert barred the power unit round, rotated and oiled the four turbos, then did some more cleaning and scraping off loose paint around the electrical cubicle. Jay and I searched for the brake frame electrical conduits in our storage, finding mos...
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Work party report 13th November 2022

Work party report 13th November 2022
Wiring in the no 1 end cab of 50030 seen in November 2022. Photo by Andy Rowlands.
Engine compartment water pipes reinstalled in 50030 in November 2022. Photo by Andy Rowlands.
Jay, Dave and I were on site today. Dave has been busy refitting various water pipes from the radiators that go through the filter compartment to the power unit. Jay helped me reconnecting the cables to the cab switch panel above the driver's position at no 1 end, but we lost the light before we could fix the panel in place.
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Work party report 18th September 2022

​Dave Rolfe, Jay Hirst and I were on site today. Dave was refitting fuel and water filler valves he'd perviously removed, cleaned & painted. Jay and I reconnected the cables to the fuel lift pump and alternator. The cables had all been cut off long ago, so each one was extended with a through-crimp and new ring crimp. The through-crimps we...
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Exhausters and blower motor lift 16th August 2022

Exhausters and blower motor lift 16th August 2022
A further big step forward in the restoration of 50030 was on Tuesday August 16th 2022. The traction blower motors and vacuum brake exhauster were lifted out of Repulse to allow the areas behind them to be cleaned and repaired if necessary. At a later date we will put back overhauled electrical machines which we acquired separately from the on...
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Work party report 18th April 2021

Work party report 18th April 2021
A key priority for us now that the power unit is out of 50030 is to get the bodyshell watertight. There's no point us putting overhauled mechanicals and electrical machines back in there if they are only going to get wet! The same applies to the cabs as we move on to refitting and restoring the controls and air pipes behind the driver's desk. We've...
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Compressors update

Compressors update
The main block of a class 50 air compressor, stripped down and partially overhauled.
The motor end of the compressor, as the overhaul progresses.
The compressor crankshaft. Note the surface rust from water ingress.
The electrical machine end of the compressor.
The compressor body. This particular example has suffered water ingress over the years and we will probably use it only for parts to repair another of our compressors as it will be expensive to repair.
The compressor motor field windings overhauled.
Another view of the field windings of the compressor; the electrical end of the machine has been refurbished.
Another view of the refurbished electrical motor field windings of the compressor.
The compressor fan housing.
The compressor motor armature in the process of receiving overhaul.
Air compressor cylinder heads. Note the one on the left shows signs of water damage.
Our medium term goal is to restore 50030 to a state where the Diesel engine can be started up and the locomotive's systems checked. To this end we are concentrating on both the power unit and generators plus the air and vacuum systems. We already have an overhauled vacuum exhauster in secure, heated storage off site and we have a number of compress...
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Cab restoration update

At the last work party I attended I took home with me a number of items to repair/overhaul or look into replacements.The first items were a pair of air horn valves, two of which are our three spares.  Despite looking rather battered the first one (photo 1) was in generally good condition.  I stripped it down, gave it a good clean, sourced...
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Power unit progress

Power unit progress

The restoration of the power unit ex-50008 Thunderer which was purchased by RRRG for use in 50030 is now almost complete.  This has involved removing all sixteen cylinder heads and either overhauling them or replacing them with overhauled heads, then removing all sixteen pistons and con rods before replacing both big and small end bearings, piston rings and if necessary pistons to effectively return the power unit to "zero hours" status.  Even with highly dedicated volunteer labour this has been a lengthy process but is now well into the "home straight".

Dave Rolfe has concentrated on an external overhaul of the unit, cleaning and painting especially auxiliary items such as water rails (blue) and oil feed pipes (pink).  This will enable us to identify potential problems such as oil leaks when the unit is in service inside 50030.  Ian Kemp, RRRG's mechanical team leader, and his fellow dedicated volunteer Peter Carter have been refitting the auxiliary pipework to the unit.  This has now reached the stage of refitting the lower cooling water rails.

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In common with other Class 50 owners we have decided to manufacture our own gaskets as this is much cheaper than buying ready-made items.  Ian and Pete were busy today cutting out and fitting the water rail gaskets to one side of the power unit before refitting and attaching one of the water rails.  This is not an easy task because the casting of the engine block makes accessing the fastening nuts very difficult!  The corresponding water rail on the other side will be refitted in due course.

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The tasks remaining to complete the overhaul of the diesel engine part of the power unit are to complete the refitting of oil and cooling water feed pipes and to test and overhaul the Woodward engine governor if necessary.  We also need to source a set of braided hoses which feed cooling water to the turbos - these were either missing or rotten when we bought the power unit.  The main generator attached to the engine is in good condition and will be detached and overhauled separately nearer the time the unit is ready to be installed inside 50030.

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The power unit currently in 50030 is also practically complete and serviceable.  We did start an overhaul of this power unit before the Thunderer power unit came on the market and it is turn intended for use in 50029, to replace the power unit in that locomotive which suffered a serious seizure that was the cause of 50029's BR withdrawal in 1992.  An exchange of main generators is possible, to mate the good generator on 50029's damaged block with the good block attached to the main generator with flashover damage that is currently in 50030 - however this is a decision some time in the future.

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Work party reports 29th June and 14th July

Work party reports 29th June and 14th July

On 29th June a long-running sub-project within the electrical restoration of 50030 took a substantial step forward. I got the proper reverser (Class 50 specification) fitted into Repulse, with help from Dave Rolfe, Peter Carter and Ian Kemp as it's so damned heavy. We had to jiggle it about to get it to fit properly, but did it in the end. I attached the divert cables at the rear, but didn't have time to do the auxilaries at the front as I showed two visitors round Repulse. We are always happy to show enthusiasts around our project so if you want to take a look inside our locomotives then get in touch with us either via the website or our Facebook pages and we will do our best to accommodate you.

 

 

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Also on this date Dave, Ian and Pete also continued sorting fuel and water pipework recovered from 50030's power unit to replace damaged sections on the ex-50008 unit.  This unit is destined for use in 50030 when complete - the existing power unit in Repulse was in acceptable condition when we acquired the loco, but has high engine hours and as part of our policy of overhauling our 50s to a very high standard in order to give them a long and trouble-free career in preservation we decided to overhaul one power unit totally.  The existing unit in Repulse will be re-used inside 50029 because the engine in Renown has serious problems following the seizure which ended the loco's BR career.  We don't know for sure but are aware of the possibility that the unit in 50029 may only be usable as a source of spares.  Power unit work can be one of the most gruelling of the practical restoration projects as the same task often has to be done at least sixteen times, sometimes even 32 or 64 times!

 

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On 14th July I attached the reverser auxiliary contact wiring after showing another visitor round Repulse. Meanwhile, Ian, Pete and Dave fitted the fuel feed and return pipes to the ex-50008 power unit that they had previously salvaged from the power unit inside Repulse.

 

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Work party report 29-30 June

Work over the weekend of 29-30 June involved stripping and painting the last of the louvre mechanisms for the radiators in 50030, hopefully to be refitted in 2-3 weeks.  Photos to follow.

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Never a truer word...

Sharp-eyed Mechanical Officer spotted an interesting addition to the livery of 66030 at Hereford on 11th August.

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Work Party 28th April 2012

Sarah and I attended site and again met on site by Dave who I now think lives on site full-time as he is always there :-)

Dave continued with clearing and tidying the container a job that when he started thought would take a morning ended up taking three days. Once this was completed he continued with the refurbishment of the radiator grilles. The process takes such a long take as each element is being stripped back to bare metal, prior to priming and painting, and as BR's policy appears to have been apply new paint onto the old there are numerous layers of paint and a rainbow of colours.

Sarah & I continued with the  assessments of the KV10's. Starting with the best we are checking and cleaning contacts and replacing unserviceable parts. We have finished one complete unit having to re-terminate a couple of broken cables connections and replace a couple of components. The next best KV10 selected had sound looking components but the cable terminations at the top of the unit looked a little rusted and three of them sheared off when attempts were made to loosen them even after liberal application of WD40 (other lubricants are available lol). Therefore we had to loosen of the paxolin board from the body of the KV10 and using recovered termination studs from other scraped units these were replaced but this is not easy as unless you disconnect cables going from one side of the unit to the other side the board only gives finger width space.

Our next visit to site to continue with work on the KV10's will be in a few weeks as we will be participating in a railtour with EE Type1's and a couple of galas where it's hoped to sample a certain Mr Spracklen's 50026.

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