46447 arrives on the back of John and David Antell`s lorries. Both the engine and the tender safely on the deck! With the loco and tender now in the workshop, work has started on the overhaul. Here some of the team have been interrupted for a photo!! James makes a start needlegunning the old paint and any rust off the boiler. With the brake rigging removed along with the horn ties, the tender frames are ready for lifting off the axles. The tender tank has also been jacked up ready for removal also. On 12th November in the pouring rain, the boiler was lifted from the frames onto a wagon, the tender tank removed and rolled onto its side and the tender frames lifted from the wheels. There is a very detailed video capturing events on youtube. Copy and paste this link: https://www.youtube.com/watch?v=XEAf83BYqSA Having been removed from the frames, the boiler now sits on a wagon in the running shed where it will have the smokebox removed and the tubes and flues taken out. The tender tank is now on its side on another wagon in the running shed. The plan is to inspect, repair and paint the base before reuniting it with the tender frames. Chris and James remove the superheater header from the smokebox. This took quite some persuading to come away from the tubeplate. Jeff cuts away the corroded steel sections from the tender frames which are to be renewed. Steve cuts the smokebox rivets ready to remove the smokebox from the boiler. The boiler now with the smokebox removed. With the smokebox removed, a start was made removing the tubes and flues with the first row of flues seen here. Chris looks very dirty due to the huge amount of scale left on the tubes inside the boiler. Jeff and Tom weld in replacement frame stretchers in between the tender frames. Steve cuts the last of the tubes out of the boiler. Chris makes a start scraping the replacement axlebox bearings onto the journals. Lots of progress with the tender frames. This picture shows the right hand side having been needlegunned and primed and also the new steel channel sections in between the frames which have replaced the wasted original ones. Lee makes replacement rubber pads for the tender tank to sit on. Bradley is seen here needlegunning the scale from the inside of the boiler barrel. Under the scale, the plate work was found to be in very good condition with very little pitting. The front dragbox of the tender has been fully needlegunned and many of the plates which were originally 9/16 inch thick steel have now rusted down to nothing. The rear portion of the dragbox has been cut away so that the thin plates can be renewed and access can be made to the previously inaccessable sections enabling them to be descaled and painted. The underside of the dragbox has also been cut away each side. New sections welded into the dragbox. The completed dragbox with new steel plates welded in place. The completed dragbox from the front showing the new panels underneath. James applies the final bit of green primer paint to the tender frames which are now ready for undercoating. The frames turn grey as they are fully undercoated. Tom and James refit the tender steam brake. The springs and hangers have been refitted and the frames lowered onto the axles and boxes. The frames rewheeled now that the gloss black paint has been completed. the brake rigging has also been refitted. A video of the rewheeling can be found here: https://www.youtube.com/watch?v=f9ReoTIgBx8 Tom makes the replacement water scoop for the tender. The pony wheels have been needlegunned and primed. All of the pipework on the tender has been renewed including the vac pipe, the steam heating pipe and the two water pipes. Chris melts out the old white metal from the crossheads. With the tender frames 90 percent complete, the tender tank is lifted back into place. The base of the tank has been repaired and now the upper sections will be repaired and replaced as required. Jeff welds in replacement steel sections into the front of the tender. Tom is using the grinding attachment on the lathe to restore the finish on the piston rod which was covered in rust pits. Another view of the piston rod being ground in the lathe. Paul makes a start removing the the old studs from the backhead before retapping the holes. Steve and Brad make a start assembling the pony truck. Note the assortment of springs on the floor. Jeff continues to make good progress on the tender with the footplate floor panel now welded into place. Chris casts the white metal into the first crosshead. Lots of progress on the tender tank with one side almost finished being needlegunned and primed. There are a number of areas which have been found to be thin and so will be cut out and patched. Jeff cuts out another wasted panel before welding in place its replacement. The pony truck now 90 percent complete. With all of the stay and crown stay nuts removed from the inside of the firebox, Steve and Mike spent the day cleaning up the threads before fitting a few hundred new nuts! All of the stays are serviceable. Jeff has attacked the tender a bit more today. More corroded platework has been cut out along the side of the coal space and the bottom and back panels of the lockers. A datum line has been set up through the left hand cylinder back to the centre line of the middle driving wheels. Having got the datum running exactly through the centre of the bore, the distance from the slidebars to this line was checked. With the original shims refitted to the original positions, the slide bars were parallel to the datum within one thou! While Chris finished remetaling the right hand crosshead, the left hand crosshead was set up on the milling machine and machined to suit the measurements just taken between the slide bars. By the end of the day, the crosshead was ready for a trial fit. Note that the left hand expansion link has also been refitted after James spent the day polishing it up. This photo doesn`t do it justice! Steve, James and Mike have now finished replacing all of the side stay nuts and the crown stay nuts. Replacement tender axlebox covers have been cast and now await machining when the milling machine is free. Chris and James drill rivet holes in the new smokebox rolling. The new smokebox is taking shape with the original front ring being riveted in place and the whole assembly positioned into the saddle to mark out the locations for the saddle bolt holes. Another view of the smokebox in place and also the pony truck, front steps and guard irons fitted. The new doubling plates and the self cleaning fittings have now been riveted into the new smokebox. A view of the outside of the smokebox. The sand boxes have been repaired with new plate work as required and have now been painted ready for fitting. Replacement pony truck axlebox underkeeps have been fabricated to replace the missing bronze originals. The new underkeeps being trial fitted. Paul fits the new studs into the backhead of the boiler. The tender scoop mechanism has now been completed and is fully functional. Here the scoop is in the raised position. Here the scoop is in the lowered position. The cab doors have been overhauled and in the case of the fireman`s side, renewed. All of the original fittings were recovered and straightened etc before being rivetted onto the new steel panels. The tender cab roof has been completely dismantled, the rust removed, straightened, painted and rerivetted back together. James bolts the snifter stand on top of the cylinders. Steve and Joey fit the snifters while Dick and Joe fit the front cylinder covers. Paul taps holes on the smoke box. This was Pauls last days working with us before he moved away. Many thanks for all your help over the years Paul! The loco frames were pulled outside today to have the RH cab side removed. A view showing the progress around the front end. A new panel has been rivetted in place at the back of the loco. A view of the replacement plate and brackets from the inside. The wasted rear lap joints have had the steel patch screws removed ready for the lap to be repaired. The lap joint with the weld deposited to build up the edge to restore back to original thickness. The welded lap dressed back ready for restudding. The completed repair of the the rear laps. The wasted edge has been restored with copper welding and the copper patch screws fitted. Work has started on installing the miles of copper pipes from the mechanical lubricators. So far about 60m have been laid! A replacement cab side has been made and fitted complete with new window frames. Chris welds a patch into the fire iron tunnel. New axlebox heat sheilds have been fabricated. The cab roof has had the beading and gutter strips reriveted and the panels needlegunned and primed. Steve welds the replacement cylinder cover casings. The fire iron tunnel has been patched where thin and trial fitted. A view of the completed oil pipework on the left hand side. The completed front cylinder casing being trial fitted. A new reverser handle has been made from scratch copying an original one on loan. A wooden former has been made to form the new top feed casing. A new top feed casing is required and so Steve is seen here forming one half over a wooden former. Once the second half has been made, the two will be welded together before the lower features are added. A completed half section as removed from the former. This is the top feed casing we are using to copy. This one is borrowed from 41313 The top feed casing has progressed well with just the hole required in the top and the pipe details at each end. The pattern for the manifold and a couple of oil boxes and lids have been kindly loaned to us by Peter Winstanley and are now with the foundry ready for them to produce gunmetal castings from them. New seat brackets have been made. Along with new seat bases. Now on the paint bench ready for painting. The new side bearer castings have arrived and have been trial fitted. The new reverser handle has now been painted and fitted. 4 oil boxes have been machined and assembled from the castings. The tender and loco steam brake oil pots along with their caps and drain plugs were machined from gunmetal castings. Tom drills the flange sections for the new ashpan. Tom welds up the new ashpan from laser cut folded profiles (like an Ikea flatpack!) A set of metallic piston rod packing rings have been machined. Here one has been bored to size to suit the ground piston rod and the spring fitted. Tom and James spray the boiler with heat resistant black paint. The regulator body has its valve faces machined to remove the pitting. The main valve part of the regulator is machined to restore the faces. Steve laps the regulator plates together to get a steam tight finish. New and replacement gauge frame nuts, collars and spindles have been machined in house. The boiler has had a coat of heat resistant paint applied after the external work has been completed. Here the refurbished bosses with new studs can be seen on the backhead and the rocking grate mechanism trial fitted. A view showing the recently cleaned up coupling and connecting rods in front of the loco frames. The new split bushes for the piston rod glands have been machined ready for fitting. Another 3 oil boxes machined and assembled ready for fitting. These feed the pony truck slideways and centre bearing and also the cylinder cock linkage in the cab. The pattern for the blower valve complete with core boxes. On loan from P.Winstanley. Our newly acquired set of rolls are put to use rolling the cylinder clothing. The new cylinder clothing is trial fitted before riveting, welding and painting. Chris heats a new sand pipe in order to tweak it before welding it to the flange at the base of the sand trap. The new steam chest drain valves have now been finished and assembled. Alex on his holiday from the Isle of Wight Steam Railway rolling the plug ferrules. The completed ferrules now being primed. Work has started on the tender again with Jeff completing the task of cutting out the wasted steel plate work ready to weld in new next week. The coupling rod bushes have all been remetalled and machined. The coupling rods have now been fitted. New connecting rod big end brasses have been made and Chris is seen here tinning the inside in preparation for white metalling. Alex sits inside the boiler assisting with the flue hole tapping. Seen in this view is the long mandrel passing through the boiler to the hole in the front tubeplate to ensure that the thread is correctly aligned in the copper tubeplate behind. James makes new felt pads for the newly made big end bearings. Jeff makes more progress on the tender. A view of the flue tap cutting the thread in the firebox tubeplate from inside the boiler. New cab seats have been made to replace the split old wooden ones. Pete fits one of the axlebox underkeeps The loco now has a full set motion parts assembled although both return cranks and return crank rods are on loan whilst new replacements are made. The new underkeeps have been fitted along with the oil feed elbows and hoses. The J pipe and regulator valve has been refitted into the boiler. a number of components for the clacks have been machined. Seen here are the two top caps, two inner inserts and the two valves themselves. All of the small tubes have been fitted and expanded at one end so far. A view through the flue holes at the recently installed tubes. The boiler took a trip outside in the sunshine. Here the regulator valve can be seen sticking out the top before the dome cover was fitted. Chris steadies the new top feed casting into place on top of the boiler. The dome cover and top feed casting now in place on the top of the boiler. The backhead now has blanking plates, gauge frames and regulator stuffing box fitted. All in preparation for holding water once the flues are finished. After a lot of noise, all of the small tubes have now been expanded both ends and the beaded. The boiler and frames went for a trip out in the sunshine this weekend. Mainly to fit the chimney. This view shows the vac and steam heat pipe runs. Another view in the sunshine. The oil pipe runs can be clearly seen in this view. This view shows the reverser, new cab seat and the new wooden cab floor. A view of the loco and boiler in the sunshine. The firebox cladding has now been trial fitted and now removed for painting. Steve inserts another flue tube into the boiler. with all the flue and tube work complete, the new smokebox is positioned onto the boiler ready for drilling and riveting. The boiler has been filled with water and pumped up to 1 and 1/3 times working pressure. Steve lights the fire in the boiler for the first time since December 1966. The safety valves lift for the first time. Steve adds the lagging over the firebox. Keith fits the cladding on the back head. Jeff fits the cladding to the top and sides of the firebox. The boiler is lifted off the wagon and lowered onto the new ashpan. The boiler is lowered into the frames The cab roof lifted into place. The loco looking quite complete after the successful boiler lift. The loco and tender reunited. The new small and large ejector pipework being installed in the cab. A view showing the new injector delivery and the ejector pipe work. Also fitted are the handrails and the ejector. Following a successful hydraulic test of the new manifold and associated valves, it has been fitted to the boiler. A close up shot of the completed ejector pipework in front of the cab. More pipework made and fitted in the cab. The two larger pipes are the steam feeds to the injectors and the smaller pipes are for the sanders. The tender water gauge showing the level during a trial filling to check for leaks. More copper pipes added to the backhead. The superheater elements, header and steam pipes have been fitted in the smokebox. Jeff fits the glands to the outside of the smokebox around the steam pipes. The casing fitted around the steam pipe to the cylinders. Richard traces the original cab side numbers in preparation for signwriting the numbers onto the new cab side. A view of the cab now that all the copper pipework has been completed. Note the new steam brake now also fitted. The completed rear of the tender showing the cast plates and finished paint work. The start of the lining process. New wooden windows and arm rests have been fitted. The first move for 46447 under her own steam since late 1966. The first of several steaming trials. Richard gives the cabside numbers their first coat of paint. The numbers have been directly copied from the original BR painted cab side. The cab side deflector windows have had the cast frames machined and the glass fitted. The work`s photo of the finished loco! The IVATT 41313 and 46447 stored at Quainton around 40 years ago The IVATT when it was stored at Quainton about 40 years ago The newly restored IVATT 46447 on its maiden journey