33035′s generator now stands ready for collection after a rewind at Bowers over the last six months. The work has been necessary to restore the ETH section back to working order after it had previously blown out a winding at the Ecclesbourne Railway. The generator was sent to Bowers for overhaul, and the blown ETH winding temporarily sealed up so the loco could complete its season at the railway and finishing the year with a visit to the Nene Valley Railway diesel gala. Returning to Barrow Hill, the generator was removed for a second time last December and sent to Bowers. The following pictures show the stages of repair.
The armature removed and the old ETH windings exposed prior to extracting
Each new winding made of strands of copper wires bound together
Each winding carefully inserted in the armature slots
The windings are taped up and protected in the main slots with Nomex insulating sheets. This shows the strands fed into the commutator slots to the left.
The ends of the windings are arranged waiting for trimming and soldering to the end of the commutator
Windings now in place and ends taped up prior to dipping in varnish
After varnishing and curing in the oven, the final banding is done on a slow turning lathe
Armature after banding and revarnishing. It is now sent away for balancing.
Armature refitted into field frame, showing heating tapes added as a modification to protect the generator in winter.
Almost finished, awaiting refitting of the fan.
After over three years tucked up in the comfort of No3 road at Barrow Hill, Sherwood Forester did not want to leave for its seaside holiday and so it put up a determined fight over the four weeks leading up to the Swanage Diesel Gala. There’s nothing like a deadline to focus minds and raise stress levels, but our team of volunteers and the co-operation of Barrow Hill made it all happen. Continue reading
At long last Sherwood’s bogies are nearing completion of the restoration work to needle-gun, chisel and scrape many layers of paint and muck from the side frames and buffer beams. A coat of grey primer-undercoat allowed all the fine detail to be seen and admired by the rivet counters, but a return to the top coat of black unfortunately also means a return to obscurity after the hours of hard work. In the pursuit of authenticity, we specified a finish part way between gloss and satin, as we felt that modern gloss paints are just too shiny compared with the old BR oil-based paints. Hopefully we have got it about right and the bogies will blend in nicely once we clean the blue paintwork. Continue reading
What to do during the cold winter weekends? Why needle gunning of course, but wrap up well, put on the ear defenders and safety goggles. Sherwood’s bogies have been under sustained attack from the needle gunners these last few weeks, blasting all the old paint and grime back to the bare metal. The buffer beam at No2 end was clearly overdue a descaling, as a small bit of rust around the edges of two small treadplates turned out to be some serious rot around the pony-link covers, all of which had to be re-plated in a number of places. Continue reading
The PDLG made its traditional festive visit to Bowers Electrical today, to view the latest casualties from diesel preservation, and progress with our own projects.
The generator from 33035 has been dismantled and the armature placed on roller stands. From this picture, you can see the ETH section on the right has the banding removed to reveal the blown coil. The glass bandings are on the floor. The coils will have to be carefully prised out of the slots in the armature, and then it will be transferred to the clean room for rewinding. Continue reading
Since our return from the Nene Valley Railway diesel gala, the spotlight has shifted back to Sherwood, and the result of the last few weeks of progress now sees the loco up and running again after its 3 year engine overhaul. We originally thought it would take about 18 months, but as usual there have been distractions along the way. Anyway, it is finally coming together for 2015. Continue reading
It has been a short but intensive summer for 33035, starting with the Keighley & Worth Valley Diesel Gala, four Saturdays working the Wirksworth-Duffield service, and rounding off with another delightful visit to the Nene Valley Railway. Three years ago Sherwood Forester took part in the Nene Valley Railway Diesel Gala and returned home to Barrow Hill for its overhaul. 33035 has followed in its footsteps and is now delivered safely back at Barrow Hill after a smooth ride back on the mainline courtesy of DCR. Assuming no more phone calls, the loco will be wintering at Barrow Hill and receiving further maintenance work, which will be reported here in the coming months. Continue reading
Recent visitors to Barrow Hill Roundhouse will have been surprised to find it has almost been emptied out, leaving just five locos huddled together in one corner. All the other roads have been boarded over and the turntable pit filled with a steel frame to provide the base for the Jools Holland concert this coming Saturday (13th). While all this has been going on, work on Sherwood has continued unabated. Continue reading
With various summer distractions including a long weekend away for 33035 at the K&WVR Gala, progress with Sherwood has been steady, and is now picking up again. All twelve cylinder heads have been fitted and torque tightened down. The top water rails connecting the heads were bolted on, and blanking plates made up, so that the block could be filled with water and pressure tested. Normal running pressure is 20psi, so the system was tested up to 30psi just to make sure. Continue reading
This year’s B-exam on 33035 concluded with an oil and filter change. Two barrels of oil were ordered up, and a new set of filters delivered. The Class 33s do not have a sump drain, as this was removed long ago by the Southern, and so the old oil had to be pumped out from the engine crankcase. It was definitely time to change the oil, as there was an accumulation of sludge in the bottom of the sump, which had to be mopped out and cleaned with a couple of buckets of diesel. The filters were also filthy, but fortunately there were no signs of metallic bits that could indicate bearing problems. Continue reading