Discussion in 'Steam Traction' started by Gav106, Apr 10, 2011.
He does look like he's having fun though.......
Engineering Up-date - February 2018
Submitted by Kevin West on 16 April, 2018 - 08:42
Locomotive Frame Assembly
Firstly, an apoligy from me for the delay in posting this up-date. The reports are created around the schedule for our Warrior Newsletter, for this up-date I just forgot to post it on the web-site!
Work continues on the construction of The Unknown Warrior at number of locations.
Board Members inspect progress on the boiler at West Shed, Sat 27th January prior to a board meeting. Photo – Kevin West
Construction of the boiler for the Unknown Warrior continues to make good progress at Heritage Boiler Steam Services.
Work is mainly progressing on marking out the various parts ready to start drilling the many rivet and stay holes required.
The Doorplate being marked out for drilling. HBSS, West Shed, 27th January 2018. Photo – Kevin West
The Outer Firebox Wrapper showing the stay holes marked out prior to drilling. Photo – Kevin West
A small issue was discovered on some of the holes drilled in the Doorplate. The Doorplate was returned to LNWR Heritage, Crewe and was back at the West Shed within a week following correction.
The Doorplate showing the doubler plate fitted inside. Photo – Kevin West
HBSS have continued marking out the various parts ready for drilling rivet and stay holes.
Boiler Components in the workshop at HBSS. Photo – Kevin West
The Doubler Plates for fitting inside the sides of the Outer Firebox have been delivered to HBSS and work has started on marking out for drilling.
The Doubler Plates. Photo – Kevin West
This work is a major step forward towards the completion of the boiler assembly.
The casting for the Boiler Steady Bracket which fits to the base of the Doorplate on the rear of the Boiler has been cast and awaits quotation for machining.
Casting for the Boiler Steady Bracket. Photo – Kevin West
Inner Firebox at West Shed. Photo – Kevin West
Inside view of the Inner Firebox showing the stay holes in the crown. Photo – Kevin West
From outside appearances little work appears to be progressing on the chassis at present. In fact, the work being undertaken is final lining up of the Valve Crosshead Slides and other motion parts.
Front of the locomotive showing the Smokebox floor area. Photo – Kevin West
The Blast Pipe and Blast Pipe Cap have been delivered to Llangollen. These will be trial fitted to the chassis in the near future to check for alignment.
Following completion of the lubrication pipework under the Smokebox, the Smokebox Floor Plate work can be completed.
We are waiting for delivery of the Reverser Shafts following machining before the next round of major work starts on the chassis.
Main Reverser Shaft Bearings. Photo – Kevin West
Brake System and Lubrication System
Work continues on installing the lubrication system pipework.
Cylinder Oil Atomiser in position with evidence of lubrication pipework in the background. Photo – Kevin West
The drive gear for the mechanical lubricators has been checked and the Running Plates slotted for the Operating Arms.
At view from below the Running Board showing the Lubricator Drive Arm. Photo – Kevin West
The machining required on the Brake Cylinder Piston has finally been undertaken and is due back at Llangollen to allow the Cylinder to be assembled and fitted to the Chassis. This will complete the mechanical assemble of the locomotive braking system.
Refurbishment of the original 9” Tender Brake Cylinder from 8F 48518 continues at Harco Engineering.
Pistons, Valves and Motion
Work is progressing on the procurement and manufacture of the remaining Inside Valve Gear parts.
The Return Cranks have been finished and await delivery to Llangollen.
Return Cranks. Photo – Robert Stephenson Engineering
RH Valve Crosshead Slide. Photo – Kevin West
Design work is progressing on the Piston Rod Glands and Covers plus Squab Boxes for lubrication of the Piston Rods. These will be based on those fitted to the Black 5’s as no drawings of the originals have been found.
Squab Box fitted to Black 5 45337. Photo – Kevin West
Manufacture of the Cab Reverser unit continues at Harco Engineering.
Drain Cock Gear, Cylinder Relief Valves & Sanding Gear
The Cylinder Relief Valves have been sent to a specialist Safety Valve company in Gloucester for testing and setting. Once set up on the test rig it has shown up a weakness in one of the castings. The Spring Cages are failing and cracking. The supplier of the castings has been contacted and we await a reply regarding replacement castings.
Cylinder Relief Valve on the test rig. Photo – Kevin West
Relief Valve Spring Cage casting showing failed casting. Photo – Kevin West
Without these parts the Valves cannot be completed and tested allowing fitting to the locomotive which has a knock on effect on delaying the installation of the rest of the Drain Cock operating gear.
We continue sourcing fittings required for the locomotive.
We are presently looking to obtain the Steam Heating Shut Off Valves that are fitted to the Buffer Beams of the Locomotive and Tender. The LMS fittings appear to be very scarce, so we will probably have to make new castings rather that obtain complete valves. The original drawings also do not appear to have survived so we are looking to borrow a valve to create new drawings. Unfortunately, even this is proving difficult as most are fitted to working locomotives!
The Steam Heat Valve fitted to Black 5 45337. Photo – Kevin West
Work has re-started on the preparation of the Tender chassis for riveting with the countersinking of numerous holes.
Future Work Planning
Areas of existing design work include, Boiler Cladding Sheets, Cab Footplate structure and Tender Tank.
Once again Kevin thank you for your very comprehensive update, it helps to underline what I huge task it is.
Thank you very much for this update Gav106!
Thank You for the update Gav! It looks odd seeing the outer wrapper attached to the throatplate before the plate is cut to follow the slope of the throatplate.
Good progress though, it's all coming together!
Some more progress of the boiler to the LMS Patriot Project`s locomotive , pictures posted at the facebook page to Heritage Boiler Steam Services https://www.facebook.com/permalink.php?story_fbid=2045518815771801&id=1988973648092985
Another excellently detailed progress report, many thanks for keeping them coming.
Good stuff. Does Kevin mean a trapezoidal rather than "triangular" thread? Seems bizarre that a square form tap could be delivered in response to a spec for a vee form thread. Also seems odd that the LNWR/LMS used a vee thread form for a regularly used heavy duty screw thread rather than an Acme / trapezoidal profile or square form. To cut the internal thread, presumably you would rough it out with a tool mounted in a between centres boring bar, started three times at 0,120, 240 by indexing?
Spoken like a true machinist...
For those interested in seeing progress on the Patriot boiler please visit the HBSS Facebook page. There was another update last night
I'm hoping it is a page that is viewable without having a Facebook account.
It is Gav ..... cheers. Just can't select individual images (as with all FB pages) without signing in.
Thank You for the link Gav! More excellent progress being made! I hope the replacement reverser shafts won't take a massively long time to be manufactured and supplied too.
The Patriot Project has had some serious setbacks over the last year so it's good to see that the current boiler build seems to be a success story so far. Let's hope HBSS becomes an important part of the rebuild/newbuild scene.
More great news from the "boiler team" building the Patriot`s boiler
I don't know if this is the right thread but.... I took advantage of the special offer on the new book The Patriots - vol 1 45500-45525 and I think it's fantastic.
Landscape format, 4 or 5 pics for each loco in the range covered, many previously unpublished, most being of locos out on the road (personal grump here - so often books on locos feature almost entirely side on shots on shed which I find too static, I much prefer action shots), there's a particularly good shot of 45509 The Derbyshire Yeomanry at Millers Dale with masses of background details... how soon will Vol 2 be out
Well worth £20 of anyone's money......
Something to do with Patriots on the Patriot thread?! How dare you not take this thread off into some sort of drift!
Ah yes, The Derby Yoyo, so called because it so often had to return to Derby Works...
I shall be hoping to acquire a copy at the Llangollen open-day tomorrow.
Hopefully the second volume won't be out until The Unknown Warrior is complete and running! Thus the full story can then be told...
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