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Posts Tagged ‘Adams O2’

The ex London and South Western Railway (LSWR) Gate Stock sets from Kernow Model rail Centre, were first announced back in 2011 and although the process has been a long one with a few hurdles along the way, the four being produced will shortly be available (they are on the high seas as I post this). These models represent the 56ft stock, originally built by the LSWR in 1914 and as later converted in the early 1930s by the Southern Railway to their now adopted standard Pull Push air control system and the SR four window driving end.  The last set to be withdrawn was set 373 in 1960.

K1002 Set 373 in Southern Malachite.

Although only four versions are being produced there are a still a number of detail variations  which has meant quite complex tooling, albeit still with a small number of compromises. The most obvious difference being the addition steel plating applied to Set 373, towards the end of its life under British Railways, which has been tooled for as version K1004. The four versions being produced are as follows:

K1003 set 363 in Crimson. Picture courtesy and copyright A York / BRM

K1001 Set number 374 in SR Lined Maunsell Green livery as carried between 1933 and circa 1945
K1002 Set number 373 in SR unlined Malachite Green livery as carried between circa 1947 and circa 1949

K1004 Set 373 in BR Green. Picture courtesy and copyright A York / BRM

K1003 Set number 363 in BR Crimson livery  as carried between 1950 and circa 1954 when subsequent re varnishing made the lining almost invisible.
K1004 Set number 373 in BR (SR) Green livery  (in reality a heavily varnished malachite with BR number style and positions)

The distinctive etched gates. Picture courtesy and copyright A York / BRM

Each set, comprising of a driving brake trailer and an open third trailer, is packaged within a single Kernow Model Rail Centre house style cardboard box with inner plastic tray lid. As supplied the coaches are fitted with NEM tension lock couplings in sprung close coupling cams, but two different lengths of a fixed bar are also provided to allow for different close coupling lengths between the coaches depending on the purchaser’s layout curves.
The characteristic vestibule ‘gates’ that of course gave rise to the name of this stock are exquisitely etched but robust separate components. A detail pack includes the air control hoses for the coach ends.

The development of these models has at times been frustrating with a number of challenges that have tried to be over come in as economical way as possible.  I certainly believe that the models capture the very distinctive look of the prototypes well, however as with any process especially when the CAD work, tooling and manufacture is carried out on a different continent, such as in this case China, occasionally it does mean errors do creep in, but lessons have certainly been taken on board for future projects.

Both the ‘outer’ ends of K1002 Set 373.

A number of us involved have tried to ensure the result is as good as possible, now that the first of the finished models have arrived, the majority of the product batch is still on the high seas, on closer inspection a small number of errors have additionally come to light. However I do not feel that they detract from the overall model (except for those most vocal & critical rivet counters for whom perhaps no model will ever meet their perceived standards).

A view of the underframe of the Driving Trailer.

Starting below the underframe the bogies frames are slightly too narrow (the datum for tooling possibly taken from the 00 wheel face), resulting in slightly deeper stepboards but with weathering the effect will be minimised. Although the detail of the construction of the underframe with fine trussing and planking etc. is well represented an error has occurred with transposing of the brake V hangers and battery boxes (the correct information for which was certainly supplied to China).

A closer look at the driving trailer coach of set 363. Picture courtesy and copyright A York / BRM

On the coach bodies, the slight tumblehome and panelling is well captured and windows fitted with flush glazing throughout. A number of the small detail differences between the sets has been incorporated where possible, such as the air operated whistle and front window wiper positions. The large number of complex and varied shaped handrail are all separately fitted items.

A view of the ‘inner’ ends showing the nicely represented gangways.

A slight mismatch in the tooling tolerances between the side and ends has resulted in a very slight height anomaly only visible on very close inspection of the relative positions of the top of the front driver’s windows and the waistband beading on the inner ends, but this is hardly visible on the final painted versions and the eye is very much drawn to the good representations of the scissors gangways, steps and handrails.

A comparison between the later plated set 373 in Green and set 363 in crimson. Picture courtesy and copyright A York / BRM

On the version of set 373 with the plating (K1004) the requested representation of the flush rivets, that certainly should not be proud, has resulted in slight dimples where perhaps the intention was for the pint to fill more than it has.
Inside the coaches a representation of the seating is provided however one internal partition is missing between the second and third window bays at the inner ends and also for some inexplicable reason a bench seat goes totally across the inner end (on the driving trailer only, the trailer coach is correct) which should be two plus seating giving access to the corridor connection between the coaches.

An extract of an image of set 363 taken in 1952 showing the waist lining

At least one magazine reviewer has questioned the waistband lining on K1003 set 363 in BR crimson, but this is correct and  the photographic evidence exists, taken at Bisley in 1952  (although I cannot post the full image here due to copyright).

The body off the chassis. Picture courtesy and copyright A York / BRM

The large windows and the open nature of these coaches with the gated vestibules do mean that populating the models with passengers would add to the effect and to enable this the bodies are simply fixed the chassis via clips along the sides and can therefore be carefully prised apart. Grip the body in one hand and the chassis in another, and sliding a piece of plasticard between the two, lift the body off, leaving the representation of the interior seating  available to add passengers and if required perhaps add the missing partition and cut back the spurious bench seat across the inner ends.

These sets could be found on the following services at various times during their life: Seaton – Seaton Junction, Yeovil Town – Yeovil Junction (363, 373), Lee-on-the-Solent – Fareham (374 up to 1930), Ascot – Guildford (374), Farnham – Guildford (374), Bordon – Guildford (373), Plymouth – Turnchapel (363, 373, 374), Plymouth – St Budeaux – Tavistock (including Bere Alston – Callington non Pull Push mode) (363, 373, 374). They also saw railtour use during the 1950’s and have been recorded at Plymouth, Plymstock, Callington, Turnchaple, Exteter, Yeovil, Salisbury, Bisley, Bournemouth, Poole, and Swanage.

I am sure that most modellers of the SR and BR(s) of the western section will be pleased with these models and they make an ideal companion to either the Hornby ex LSWR Drummond M7 or indeed the Kernow Model Rail Centre’s own commissioned ex LSWR Adams O2 0-4-4Ts.

 

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I am pleased to publish below images of the first off Engineering Prototype (EP) samples for the now seven versions of the Kernow Model Centre Adams 0-4-4T O2 class locomotives (the 7th variation, of 207 in Maunsell lined green was announced here).

Isle of Wight version W24

Isle of Wight version W24

These images are taken from the first main body parts tooling run are obviously far from complete, with little of the separately applied details such as pipework, brake gear and handrails etc added,  but will give you an idea of the impressive amount of detail and variations that have been incorporated.

Mainland pull push fitted version

Mainland pull push fitted version

Just look at the shear number of holes in the body tooling to incorporate those details. The full list of the available variations, including both Isle of Wight and Mainland versions,  and liveries that will be available can be found on the Kernow Model centre dedicated webpage here.

Rear 3/4 view

Rear 3/4 view

These being the first off Engineering Prototypes will therefore be subject to minor tweaks and correction where necessary. It has already been noted that some of the detail combinations of the EP’s produced do not reflect the final versions, but at this early stage are as much to test the tooling rather than to confirm each and every variation being produced.

The body only of the Mainland non PP fitted version

The body only of the Mainland non PP fitted version

For example the Mainland Pull Push fitted version shown left has the side tank strengthening plate of the Calbourne version and also the Isle of White type Westinghouse pump fitted.

A final view from the top

A view from the top

As regular readers of this blog will know I have been assisting the Kernow Model Centre with the development of these Adams O2 models, hence me being able to publish these pictures with their kind permission, and it’s nice to report this further progress.

The front face of the O2 in this case an IoW version

The front face of the O2 in this case an IoW version

This 1st EP will be checked to highlight any corrections needed, and will be followed  by a more complete and working sample for fuller appraisal. Once this has been complete and if there are no problems with the 1st EP, The model will then be progressed to a 2nd EP where all the rivets and finer detail will be added to the tool. For speed of development the 1st painted samples will also be provided to allow the project to then move apace ready for signing off and full production. Production should take, when authorised, around 4-6 weeks with roughly the same time to ship to Kernow Model Centre’s premises.

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I am please to advise with Kernow Model Centre’s permission that the second set of CAD images have arrived from Dapol and Kernow Model Centre along with myself are now in the process of checking these. I am sure there will be further amendments to be made in due course.

These Cads reflect the Isle of Wight extended bunker version also fitted with the Westinghouse air braking system used on the Island. The mainland variant of the model, including the pull push fitted option will be worked on once this version is complete.

Further information about the O2 models from the  Kernow Model Centre can be found here.

The shovel that was inadvertently left on the water tank during the laser scan has been removed!

The Engine Head Signal discs (often incorrectly referred to as headcode disks) will be separate fittings as they were with the Beattie Well Tank.
The destination and duty number boards are shown for effect but will not be included on the completed model.

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The Kernow Model Centre have today released the first off CAD images of the forthcoming Admas O2 commissioned model and have also advised further information as below. It should be noted that being the first off there are still a number of corrections and amendments that are likely to be required.

The CAD drawings  have been produced from the data collected during the laser scan of Calbourne carried out at the Isle of Wight Steam Railway last autumn. Once these  have amended these with any corrections required they  will move on to produce individual cad-cams for each variant to be produced.

Unfortunately the cost of tooling these models has risen by almost 40%, mainly due to the changes in labour conditions and working practices in China. Kernow Model Centre  therefore regret that they cannot absorb a price rise of this magnitude and have been forced to increase the price of the O2 model to £119.99. This price will be reduced to £104.99 for pre-orders placed prior to delivery of the final model. They will continue to honour the pre-order price for their loyal customers who had already pre-ordered this model prior to July 2012, subject to no taxation changes such as VAT increases.

In response to demand an additional variant has been added to the five models previously announced. This will be number 30193 with an early emblem for the benefit of modellers who want an early emblem O2 without pull-push equipment.

Kernow Model centre  have received many requests for a pull-push fitted O2 with late crest, but to date no evidence has been found to  establish that such a version ever existed! Should positive information about this come to light then they certainly consider this request.

Realistically we do not think it likely that these models will be available before the end of this year and think it more likely that they will now be delivered during 2013.

The full list of the now six initial variants can be found and pre-ordered from the Kernow Models Website here

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