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Number 7's Photograph Gallery


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In April 2022 Sir Nigel Gresley returned from an overhaul which took more than six years and cost about £750,000. If you would like to make a donation towards the cost of this overhaul please click on the donate button.


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A progress report for the overhaul may be found here.


January to Overhaul December 2020

The equal lever of the Gresley conjugated gear has new bushes and is shown on the machine after being bored out.
Photograph: Richard Swales

1 January 2020

The Cartazzi "wedges" have been skimmed by one of our volunteers to restore the correct geometry.
Photograph: Richard Swales

9 January 2020

The trailing Cartazzi horn liners are worn beyond further use. Here the right side one is being carefully removed.
Photograph: Richard Swales

9 January 2020

The keyways in the coupling and connecting rods are being carefully dressed to remove wear and to ensure security of the key when the bushes are pressed in.
Photograph: Richard Swales

9 January 2020

The new steam pipe casting have been delivered and await transporting to contractors for machining.
Photograph: Richard Swales

9 January 2020

The middle gudgeon pin before grinding has to be fitted with a plug drilled with a centre hole so that the pin can be rotated about its cemntre accurately. The plug is fitted at the large end.
Photograph: Darrin Crone

9 January 2020

The boiler lagging is now being fitted.
Photograph: Ken Woods

14 January 2020

The tender filler space is being painted ready to accept the air tanks. Here shown in undercoat.
Photograph: Peter Brackstone

15 January 2020

The new valve guide casting is carefully positioned on the valve chest cover before being drilled for its securing bolts.
Photograph: Richard Swales

16 January 2020

The crinoline that supports the streamline casing is being repaired and painted before fitting.
Photograph: Richard Swales

18 January 2020

The air brake tanks have been hydraulically tested and passed by the insurance company.
Photograph: Darrin Crone

21 January 2020

The crinolines are prepared for fitting.
Photograph: Richard Swales

23 January 2020

Insulating the boiler. The insulation is retained with chicken wire.
Photograph: Richard Swales

23 January 2020

Two of the gudgeon pins after return from the grinders.
Photograph: Richard Swales

23 January 2020

All the coupling rod and outside big end bushes have now had keys made and fitted, and the oiling felts fitted.
Photograph: Richard Swales

23 January 2020

The knuckle pins that join the coupling rods together have tapers machined to provide best fit in the rods.
Photograph: Richard Swales

23 January 2020

The valve guides are mounted on the valve covers and are examined for their condition.
Photograph: Richard Swales

28 January 2020

One of the valve guides has been replaced by a new casting. It is being fitted to its valve cover.
Photograph: Richard Swales

28 January 2020

All the cylinder relief valves have now been successfully tested at their set blow off pressure. A lot of work has gone in to recovering some of these valves.
Photograph: Richard Swales

28 January 2020

All the crinoline sections, in order of fitting are in front of the loco being prepared.
Photograph: Trevor Camp / SNGLT

28 January 2020

The key ways in the rods show wear so these are dressed. The new keys fitted to the bushes locate in here.
Photograph: Richard Swales

30 January 2020

The backhead cladding is fitted. It can be seen where the numerous large sections were previously cut out for repairs. These have been welded in place.
Photograph: Peter Brackstone

5 February 2020

The main boiler cladding after a preliminary clean. It is made up of original sections, patches and newer material.
Photograph: Peter Brackstone

11 February 2020

More of the main boiler cladding showing the condition of some of the sections.
Photograph: Peter Brackstone

11 February 2020

We had a visit from twp Chelsea Pensioners.
Photograph: Tony Oldfield

12 February 2020

The Cartazzi overhaul is well under way. The bronze slide have been skimmed to return them to the correct shape. Both are marked as being from 4464 Bittern, the Left previously marked as being on V2 4788 (60817).
Photograph: Darrin Crone

12 February 2020

The trailing crossheads have been machined to remove all their whitemetal and to true them up. The crosshead on the milling machine located on the valve spindle socket.
Photograph: Richard Swales

12 February 2020

The loco now carries a complex electrical system. Here some of the wiring is reinstalled after new conduit was run in below the cab floor.
Photograph: Richard Swales

13 February 2020

One of the coupling rod bushes about to be pressed in.
Photograph: Richard Swales

20 February 2020

One of the coupling rod bushes being pressed in, aligned by a close fitting key.
Photograph: Trevor Camp / SNGLT

20 February 2020

The old valve guide that was unacceptably out of position is machined to correct its alignment.
Photograph: Richard Swales

21 February 2020

The reverser column is refitted now the backhead cladding is in place and painted.
Photograph: Peter Brackstone

27 February 2020

Not mentioned in the report but there's plenty of activity on more minor components. Here the cover for the tender gangway top spring is being painted before fitting.
Photograph: Peter Brackstone

27 February 2020

New tender streamlining steel in position.
Photograph: Richard Swales

27 February 2020

The streamlined casing shows corrosion along the sides and bottom edges. New steel is welded in.
Photograph: Darrin Crone

3 March 2020

Four Cartazzi Spenser spring bottom plates are required we are using two old and two new.
Photograph: Darrin Crone

4 March 2020

The lower cod's mouth door assembly being fitted after riveting and painting.
Photograph: Peter Brackstone

5 March 2020

To work on the boiler safely we have had to invest in access equipment. It is all checked weekly following a controlled procedure.
Photograph: Richard Swales

5 March 2020

The battery box is being fabricated.
Photograph: Richard Swales

5 March 2020

The tender coal door catch after refurbishment.
Photograph: Darin Crone

8 March 2020

The back corner cladding pieces have been repaired, fitted and painted in undercoat.
Photograph: Peter Brackstone

11 March 2020

The tender gangway floorplate is in place.
Photograph: Richard Swales

12 March 2020

The new Cartazzi bronze bearing casting, now being machined.
Photograph: Richard Swales

12 March 2020

The projections from the back of the valve chest covers have to be the correct length to located against the valve liners.
Photograph: Richard Swales

14 March 2020

One of the coupling rod oiling rings having it's oil retaining holes de-burred.
Photograph: Darrin Crone

16 March 2020

The last cast iron steam pipe to be machined at contractors. The position of the datum for the holes to be drilled in the flange is being discussed.
Photograph: Darrin Crone

17 March 2020

The wedges for the lower tender vestibule support brackets being skimmed to restore their shape.
Photograph: Darrin Crone

17 March 2020

The left knuckle pin is fitted to the coupling rod.
Photograph: Darrin Crone

19 March 2020

The right leading oiling ring is pressed onto the bearing that projects through the rod and into a recess in the rods.
Photograph: Richard Swales

20 March 2020

The coal door frame has been partially riveted. The rivets being ground flush. The original small section of roof over the corridor is refurbished and fitted .
Photograph: Richard Swales

20 March 2020

The new valve guide bolts have the hex head machined on an Elliott milling machine, indexed with a Fritz Werner dividing head.
Photograph: Darrin Crone

27 March 2020

The new valve guide bolts have their overall lengths marked off on a flat surface with a vernier height gauge. 29 March 2020
Photograph: Darrin Crone

29 March 2020

As the bolt heads won't pass through the headstock of the Colchester Student lathe, the ends have to be supported in a three point steady then machined to length. Photograph: Darrin Crone

29 March 2020

The completed bolts with pin holes drilled, next to the old bolts.
Photograph: Darrin Crone

30 March 2020

One of the knuckle pins on a Bridgeport milling machine having the cotter machined.
Photograph: Tony Bickerstaff

30 March 2020

The keyway slot of the left knuckle pin is machined by indexing round by 90 degrees with a substantial rotary table.
Photograph: Tony Bickerstaff

30 March 2020

Lubricator drive crank components
Photograph: SNGLT Engineering Team

 

Lubricator drive crank
Photograph: SNGLT Engineering Team

 

TPWS bell
Photograph: SNGLT Engineering Team

 

TLED spotlight unit
Photograph: SNGLT Engineering Team

 

New TPWS and OTMR battery box
Photograph: SNGLT Engineering Team

 

Cartazzi bearing casting
Photograph: SNGLT Engineering Team

 

Cartazzi bearing casting
Photograph: SNGLT Engineering Team

 

The new tender battery enclosure.
Photograph: Richard Hawkhead

31 May 2020

The tender water gauge valve and new stainless steel adaptor
Photograph: Peter Slater

8 June 2020

The AWS/TPWS sunflower unit used as a warning indicator and to acknowledge signals
Photograph: Mike Page

11 Jun 2020

The middle big end test bush made to high accuracy and will be used to ensure the middle big end bearing is held securely in the rod.
Photograph: D Holmes

14 July 2020

One of the handbrake link side plates being machined with a radius where the section thickness changes
Photograph: Darrin Crone

15 July 2020

The handbrake side links and centre block trial assembled on dowel pins ready for final welding
Photograph: Darrin Crone

7 August 2020

One of the new tender vestibule support rod packing pieces has been machined and is being drilled
Photograph: Darrin Cronw

8 August 2020

One of the new blast pipe caps being machined with the use of a rotary table
Photograph: Tony Bickerstaff

10 August 2020

Refurbished boiler pressure gauges.
Photograph: Darrin Crone

2 September 2020

The devil is in the detail, individually made smoke box studs with drawing and material purchase order detail
Photograph: Darrin Crone

5 September 2020

The re-metalled and machined middle piston valve tail rod bush
Photograph: Darrin Crone

5 September 2020

The new and ex-service blast pipe caps, with a 7¼" gauge version
Photograph: Darrin Crone

6 September 2020

Two new nuts made for the coupled wheel spring hangers to replace "odd" sized nuts. Now we only need one spanner to adjust the brakes instead of having to remember the odd ones!
Photograph: Darrin Crone

27 September 2020

First day back in the workshop, our maximum permitted attendance is five. Our last day before lockout we had 16. It's very quiet.
Photograph: Richard Swales

29 September 2020

We have set up our own "wash station" in the corner of the workshop. All we need now is to get the hot tap to work,
Photograph: Darrin Crone

30 September 2020

The valve covers are fitted
Photograph: Richard Swales

1 October 2020

An old tender dragbox bush and the last new one ready to go in. I suppose it was due a change.
Photograph: N Franklin

2 October 2020

Two of the 4 new bushes now fitted in the tender dragbox. The side or safety link pins go through these bushes. The side links provide a backup connection between loco and tender if the main drawbar fails.
Photograph: N Franklin

2 October 2020

Measurements have been taken of the Cartazzi horn gaps to enable liners to be specified.
Photograph: Richard Swales

7 October 2020

With the valve cover on and the valve in place the offset dimensions can be taken.
Photograph: Richard Swales

7 October 2020

The knuckle pin bushes are pressed in to the trailing coupling rods.
Photograph: Richard Swales

8 October 2020

The loco brake gear is laid out and the rebushed links pinned up to check fit and dimensions taken for new pins.
Photograph: Darrin Crone

16 October 2020

One of the refurbished lower vestibule support assemblies fitted with the new floorplate above.
Photograph: Darrin Crone

16 October 2020

The new tender side link pins that will go through the new bushes. The one with the longer top goes through a longer hole in the cast iron balance weight. It gives me something to hold on to for removal. Photograph: Darrin Crone

18 October 2020

Riveting the coal door frame on to the front plates of the tende.
Photograph: Peter Brackstone

20 October 2020

An Engineering Team volunteer boring the new little end bushes.
Photograph: Richard Swales

20 October 2020

The right coupling rods are lifted on to the crankpins.
Photograph: Richard Swales

20 October 2020

The right coupling rods fitted and leading crankpin cap.
Photograph: Richard Swales

20 October 2020

The ends of the new Cartazzi hangers have been slotted and the undercuts at the ends of the threaded section have been finished. Photograph: Darrin Crone

23 October 2020

New brake pins freshly machined by a volunteer.
Photograph: Darrin Crone

23 October 2020

A white-metalled crosshead being machined in the home workshop of one of our volunteers.
Photograph: Richard Swales

26 October 2020

The right combination lever fitted to the radius rod, the machined valve crosshead in place on the valve spindle but not pinned in to the combination lever.
Photograph: Richard Swales

29 October 2020

The middle cylinder steam pipes tried in place.
Photograph: Darrin Crone

4 November 2020

The left side combination lever fitted to radius rod and valve crosshead being set up for mid gear position. Photograph: Richard Swales

5 November 2020

New pipe end cones for the atomiser steam supply pipework.
Photograph: Darrin Crone

6 November 2020

The new cast iron steam pipes that are fastened to the tops of the cylinders are fastened together and pressure tested.
Photograph: Darrin Crone

12 November 2020

The CME ponders on the valve head positions on the spindle.
Photograph: Tont Bickerstaffe

12 November 2020

One of the little end bushes during machining by one of our Engineering Team volunteers.
Photograph: Tont Bickerstaffe

12 November 2020

The handbrake link being machined in a volunteer's workshop. Photograph: Richard Swales

17 November 2020

The steam supply pipe to the air pump is pressure tested before final fitting to the loco.
Photograph: Darrin Crone

17 November 2020

Not open to the public a view of the loco from the viewing gallery.
Photograph: Richard Swales

19 November 2020

Also seen from the public gallery, the tender.
Photograph: Richard Swales

19 November 2020

The new cast iron steam pipe in position with the ex-service steel pipe cut to fit.
Photograph: Richard Swales

19 November 2020

The left lower combination lever and piston crosshead drop link pin holes are compared for alignment during fitting of the union link. Photograph: Richard Swales

20 November 2020

Once cut and with the end flanges in position the cuts in the pipe are bridged to hold the pipes new shape.
Photograph: Richard Swales

20 November 2020

The right side valve gear assembly with union link fitted.
Photograph: Richard Swales

20 November 2020

The left union link being measured for twist.
Photograph: Richard Swales

24 November 2020

The new handbrake link machined by Engineering Team volunteers with the ex-service behind.
Photograph: Richard Swales

27 November 2020

The coach has arrived at contractors for the overhaul of the underframes.
Photograph: Darrin Crone

2 December 2020

The new loco brakeshaft bearings during machining, with the same components in model form for a 7¼" A4.
Photograph: Darrin Crone

3 December 2020

The new tender corridor canopy fitted. Original drawings were used to fabricate this part.
Photograph: Richard Swales

4 December 2020

The two loco brakeshafts being rebushed.
Photograph: Richard Swales

4 December 2020

The little end bearings being slotted for their oiling felts.
Photograph: Tony Bickerstaffe

8 December 2020

One of the cast iron steam pipes being set up for drilling.
Photograph: Richard Swales

11 December 2020

The coach has been lifted for the underneath of the coach and bogies to be thoroughly inspected.
Photograph: Richard Swales

16 December 2020

Everything needs painting, and work proceeds on a little end keyway.
Photograph: Richard Swales

18 December 2020

The ex-service cladding sheets with a new steel sheet being marked out and drilled.
Photograph: Richard Swales

18 December 2020

One of the middle big end bearing half castings having the mating surface machined.
Photograph: Tony Bickerstaffe

21 December 2020

After the faces are machined they are tinned with solder.
Photograph: Tony Bickerstaffe

22 December 2020

After aligning the halves they are soldered together.
Photograph: Tony Bickerstaffe

22 December 2020

The new cladding sheet being welded. In front the middle trailing valve cover waiting to be welded so that the end stop can be finished to the correct length.
Photograph: Richard Swales

22 December 2020

Santa's leading artisan elf popped in to help with some pipework on his way to the North Pole.
Photograph: Richard Swales

22 December 2020

The middle big end bearing halves soldered ready to go for machining.
Photograph: Darrin Crone

23 December 2020

The new right leading boiler cladding panel in place.
Photograph: Darrin Crone

23 December 2020

The right leading brakeshaft bearing in position.
Photograph: Darrin Crone

23 December 2020

The leading left brakeshaft bearing housing is honed to remove taper and improve circularity for the fitting of the bearing.
Photograph: Tony Bickerstaffe

23 December 2020

The little end bearings are keyed in to the connecting rods. New keys being ground to size.
Photograph: Tony Bickerstaffe

30 December 2020

All photographs are copyright of the photographer named on the larger version.

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