Bahamas – work in progress

November 2016

At Ingrow:

Tender – work on the tender frames has included overhaul of the buffers, steam brake cylinder and operating gear, drawhook, steps, etc.

The wheels have had all their journals, bearing, tyres machined.  New tyres have been fitted to the leading wheelset.  The horn clips have been cleaned and painted and new nuts fitted to all the bolts.  New wood packers which sit between the frames and the tender tank were made and set to place to allow for fitting of the new tender tank, which took place on.  On the same day the wheelsets were reunited with the chassis. The whole job was completed in just the one day using the 50T crane.  Since then the tank has been bolted down, the spring hangars levelled and a start made on the pipework.

Engine – the gudgeon pins have been checked and nuts and cotters made, all the valve motion has had the old bronze bushes removed and the holes bored true. These are now awaiting new bushes. Cleaning of the coupling and connecting rods is complete and will soon be sent to Tyseley for the bearings to be remetalled.

Fittings – the boiler clacks, snifting valves, the regulator stuffing box and gland follower have been overhauled, as have both safety valves and the AWS air admission valve.  The regulator rod has been machined and a start made on the rear safety valve.  New copper pipework has been made up for the injector steam supply, the brake steam supply, and the atomiser and tube cleaner steam supply.

The chimney has had all the casting core holes plugged and welded.

At Tyseley:

Engine – the piston valves have been repaired and assembled into the valve chests.  The slidebars have been re-assembled and set, and the crossheads whitemetalled and machined to suit.  The piston castings have been machined, re-assembled to the piston rods, and attached to the crossheads.

Boiler – the new front barrel-ring has had the front tubeplate riveted into place.  Work on the second barrel-ring insert is complete.  The new steel doorplate is also complete,  has been riveted into the boiler, together with an insert in the rear of the crown plate. All the stayholes have been drilled and tapped, and the firedoor ring has been bolted up ready for riveting.  New pads for water gauges, blower, and blowdown valve have been fitted; the washout-plug holes have been drilled, all the stay holes have been drilled and tapped, and the fire-door frame fitted to locate the fixing-stud holes.  A new manifold pad casting has been made and machined to replace the original, which was cracked and beyond economical repair.

Firebox doorplate 22 November 2016.

Firebox doorplate 22 November 2016.

The new steel throatplate has been fitted to place, all the stay holes drilled and tapped, and is awaiting the wrapper side plates to be welded in before riveting.  Preparation for fitting new rivets in the copper tubeplate is in hand.

There was a meeting with the Insurance Co’s engineer in November who reported that  he was pleased with the work done so far.

October 2015

At Tyseley:  Since the engine was put back on its wheels in August, the brake rigging has been overhauled; re-bushed and fitted with new pins where required and re-assembled. This includes the steam-brake cylinder and bell-crank bracket, which have also been overhauled. Work on the engine frames is thus substantially complete.
The piston rods have been machined parallel and polished, and new piston securing nuts have been made. The threads on the piston rods have been re-cut, so the new nuts are individually matched to the rods.  One piston casting has been received, but the other two are awaiting delivery from the foundry.
The new bottom-half throatplate had been set-up for forming the flange into the boiler barrel. Once complete, it will be mounted on a second forming block to make the flanges into the firebox wrapper plates.
At Ingrow: Tender – the tool tunnel has been extended further into the water space to accommodate the length of the rake.  The water shutoffs have been overhauled and the tank level gauge linkage connected. The access panels have been welded into place and the intermediate buffers have been assembled with new springs and refitted back into the dragbox.
The brake crosshafts and hangars have been refitted and new cotters made. The handbrake bridle has been welded up and machined. The new front frame stretcher has been primed drilled and bolted into position ready for riveting.
The horn faces have been checked against the axleboxes and all axleboxes are being built-up with whitemetal ready for machining.
The tender springs and spare driving springs have been made ready for sending away, and the spring hangar bolts shot blasted ready for crack detection.

May 2015

Engine – The new piston-valve rings have been manufactured, and await assembly with the valve heads and repaired spindles.
The bogie has been reassembled.  The driving wheels and journal work are complete, and the driving axleboxes have been bored and new bronze liners fitted.  The slidebars have been dimensionally checked and the bottom outside bars sent for grinding, while the top outside bars are being set to position.  The middle cylinder slidebars are acceptable. The crossheads will be machined to size when this exercise is complete.
The engine and bogie springs have been received, but their repair is not wholly acceptable and some remedial action is required.  The intention is to re-wheel the engine in mid May.

Boiler – The new front boiler barrel ring is on site. The second barrel ring has been crack checked and is acceptable, and the ‘D’ insert has been made, and ready to be welded in place. The new front tubeplate has been machined. The flanging block for the new doorplate has been fettled to form the upper section of the new plate. This will be made first and riveted into the boiler before the lower three quarter section, so to improve access.
The removal of the crown stays continues to indicate those remaining are badly necked. The decision has been made, therefore to have them all removed and renewed.  Fortunately there is some contingency funding available to cover this extra work

Tender – New brake-adjusting nuts have been manufactured and the threads restored in the pull rods. New bushes have been made and fitted in the pull rods where necessary and the cross-shafts built up with weld. The draw gear has been removed and the rear dragbox has been cleaned and repainted.
The right front tender steps have been riveted into place and the left side bolted up and drilled ready to rivet. The leading frame stretcher has been removed and a new one is being manufactured.
The axleboxes have been stripped and cleaned and all the spring pillars cleaned ready for crack detection. The intermediate buffer housings have been drilled for the retaining screws and these have also been manufactured. The spring retaining brackets have been removed, straightened and are ready for painting.  The warming valve is almost completed.
The tender wheelsets have all been measured prior to have the tyres machined at Tyseley.

 

January 2015

Engine.  Grinding of the hornblocks true is now complete, as is boring of the valve chests, for which new valve heads have been manufactured.  The former front heads have been reduced in size to enable them to be used in the rear liners.  The valve spindles have been straightened and machined true.  Machining of the bogie wheels has been completed.  Final assembly of the bogie will now depend on refurbishment of the springs.
The driving wheels are currently being profiled and the driving axleboxes have been machined to accept the new bronze liners. The slidebars are currently being measured and assessed.

Boiler.  The new boiler front barrel ring is awaited. The second barrel ring has been crack checked and found to be acceptable.  The new wrapper sides have been pilot drilled and now await first fitting. The new front tubeplate has been welded, NDT checked, annealed and flattened, and now awaits machining.  The former-blocks for the new door and throatplates are available, that for the doorplate has been sent out to have the new plate precision bent to match before flanging takes place – expected to start in mid-February.
Investigation continues as to the acceptability of the crown stays, many of which are to be renewed.

The boiler from 'Bahamas' undergoes major 'surgery' at Tyseley Loco Works, 27 January 2015.

The boiler from ‘Bahamas’ undergoes major ‘surgery’ at Tyseley Loco Works, 27 January 2015.

Tender.  The tender frames have been lifted to allow removal of the axle boxes and wheelsets.  The frames are now in the shed at Ingrow and all the brake hangars, cross shaft and the draw gear have been removed. The axle boxes have been degreased and a small team is making good progress on painting the inside frames.  The wheels are to be sent away for machining.  The new tender tank has been delivered to Ingrow.

Miscellaneous.  Progress is being made on the refurbishment of boiler steam fittings, and the annealing/cleaning of copper pipework at Ingrow.

 

October 2014

Progress at TLW continues as follows:
Locomotive - The mainframe repairs are complete and work has started on grinding the hornblocks true. The LH valve chest has been bored, and the RH is almost completed. Refurbishment of the various parts of the bogie is well advanced.
Boiler - The front barrel ring of the boiler has been removed.  As a consequence of cracks discovered in the seal welds of the butt strap, some of which pass into the parent material, and other cracks adjacent and within rivet holes where the front tubeplate was attached, a new replacement ring has been ordered, as this is the only viable option for repair.  The new front tubeplate blank is on site and work was in hand preparing the flange for welding. It is anticipated that the forming of the new doorplate should start by about end November.
The new tender tank ordered from Hill & Webster is almost complete and is due for delivery to Ingrow in early December.
Work continues at Ingrow on the the tender frames, refurbishing of various boiler fittings, and annealing/cleaning of copper pipework

July 2014_MG_3782

Progress continues at the workshop of the South Devon Railway, where new tyres were fitted to the driving and bogie wheel sets – as seen in the view here (photo: John Hillier).

Meanwhile further progress on the engine and boiler continues at Tyseley, and on the tender and footplate fittings at Ingrow.

 

22 March 2014
Progress at TLW continues as follows:
Mechanical works: The pistons have been separated from their rods; the steam brake cylinder has been removed, stripped and examined; the new axlebox-crown brass castings have been delivered, and the horn cheek liners are on order.  The engine frames have been lifted from the wheels.

Boiler: The smokebox, superheater header, and all tubes, have been removed. Work has started on removing stays and rivets to enable the corroded plates to be cut out and allow a thorough survey to take place.
Meanwhile, work at Ingrow continues on the repair of small boiler fittings.  New material has been obtained to complete the repair of the tender intermediate buffers; the water-pick-up gear has been removed from the tender frames, and the steps are under repair.

The Learning Coach – this former breakdown riding and tool van is now undergoing internal repair and conversion to become an education facility as part of the whole Bahamas overhaul project.  The kitchen stove and associated piping has been removed, and a contractor has been appointed to remove the heat protective asbestos from the kitchen compartment.

22 January 2014

boiler lift

An important milestone in dismantling Bahamas occurred on 16 January, at TLW, when the boiler was lifted from the frames.  For further details please see the 45596 Boiler Lift – Press Release.

 

6 January 2014

To date, the boiler has been disconnected and is ready for removal, the valves and pistons have been removed from the cylinders, and the brake gear has been removed from the chassis.

10 December 2013

Following the delivery of the engine to TLW on 27th November, by 9th December the following tasks have been undertaken.
The main steam pipes, superheater elements and blastpipe have been removed, the cab is ready for removal, the footplate boiler cladding has been removed, boiler expansion angle clamps removed, and work is in hand removing the ejector exhaust pipe, handrails etc.

31 October 2013

Contract signingThe contract between the Society and Tyseley Locomotive Works (TLW) for the overhaul and repair of the locomotive’s boiler, wheels and frames was signed today.  Tysley’s Bob Meanley watches as BLS Chief Engineer, Steve Allsop, signs the contract document.

28 July 2013Whistle removal 2

Progress continues in stripping the locomotive of those parts that are to be retained at Ingrow, and which will be refurbished by Society volunteers.  Here the whistle is being removed.

18 May 2013
This day was the last opportunity to see Bahamas as a complete locomotive before the process of dis-assembly began.Night shot