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Blue Monday? No, (Blue Circle) Cemflo Friday!

Production of our Cemflo PCVs cement tanks is complete and the models are due to leave the factory early next week. We’re just waiting for quotes on air and sea shipping before deciding how they will be shipped, but it is likely that they will come by air so we would expect delivery to the UK within the next couple of weeks.

The Cemflo tanks are being produced for us by our friends at Accurascale who’ve done a great job on these distinctive looking tanks and sent us these pictures from the production line. We’ve put some ideas for train inspiration below.

IMPORTANT

If you would like to guarantee your Cemflo wagons at the pre-order price then please place your order now! The price will rise to our MSRP of £29.95/wagon (£89.85 per triple pack) when the models arrive.

Cemflo in our familiar plastic box packaging

Suitable for the early-1960s modellers to the late-1980s modellers, the Cemflo tanks were built between 1961 and 1965 for Associated Portland Cement Manufacturers (APCM) and are probably best known for their use on trains of Blue Circle cement from Cliffe, in Kent, to Uddingston on the outskirts of Glasgow. Later in their working lives, they also supplied a number of other locations, including Aberdeen, Dewsbury, Dundee, Grangemouth, Sunderland, and Widnes. The last Cemflo/PCV wagons were withdrawn from service in mid-1988.

Several types of locomotives were observed hauling Cemflo wagons during their time in service, including class 25s, class 26s, class 27s, class 31s, class 33s, class 37s, class 40s, class 45s, class 47s… even Black 5s, Jubilees,V2s, 9Fs and A4s!

Here are a few links to some interesting flows for inspiration:

A4 60026 at Stonehaven, June 1965

Perhaps the classic Cliffe-Uddingston train – D6582 and D6577 (later class 33s), April 1962

9F 92191 Summer 1962

AL5 E3090 (later 85035) at Leighton Buzzard, 1966

Class 20 retrieving a damaged Cemflo, August 1967

40014, at Chinley Junction, May 1979

08630 at Grangemouth, April 1987

47237 at Millerhill, April 1987

47596, 7M66 Dewsbury – Earles Sidings, June 1988

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Class 92s…but wait, there’s more!

As a final surprise, we are delighted to reveal that three extra Class 92s are being made available.

92008 ‘Jules Verne’ in original Railfreight livery, 92023 in Caledonian Sleeper and 92043 in GB Railfreight.

These were produced by Rapido in response to the high number of requests received from those who missed out after the deadline passed while the models were in production. These are 92008 ‘Jules Verne’ in BR Railfreight livery, 92023 in Caledonian Sleeper teal, and 92043 in GB Railfreight livery.

These models are DC only, and are available from retailers and from Revolution directly (where stocks are available – we have none of the 92023 Caledonian Sleeper models however retailers will have stock), priced at £175 each. Retailers will start to receive their stock later this week.

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Class 92s inbound!

The wait is nearly over for our Class 92s. The models left the factory mid last week and are currently at Heathrow awaiting delivery to us (updated: 23/12/20). If the models are delivered to us before Christmas (we’ll update this page once we know) then we will start to send out orders as soon as we get the models – that means the earliest deliveries are likely to be just after Christmas.

If your order(s) are fully paid then you don’t need to do anything other than check that your delivery address is up to date on your account (we check all orders against the latest shipping address on your account and update as necessary).

Outstanding payments

Payments by instalment plan: (deposits placed before 1 Jan 2019) if you paid a small deposit then there should be 3 payments in total for each 92 ( the initial deposit and 2 further payments). If any of the instalments for your order(s) are showing as Partially Paid or Pending Deposit Payment then it means one or more of the invoices is yet to be paid – please pay as quickly as you can so that we can send out your model(s).

50% deposit payments: (deposits placed after 1 Jan 2019) if you paid a 50% deposit then your balance invoice will not have been generated yet but we will generate it over the next few days.

Delivery updates

We realise that it can be frustrating waiting for orders, but please bear with us – there are hundreds of orders to send out and we send them out in order of when they were paid. We regularly update progress of where we have got to on our Projects page in the Notes section. Please don’t message us asking for an update on your order until all parts of your order have been marked as “Complete” – that means your order has been despatched – or until we have said that all orders have been sent and please bear in mind that there are still ongoing delays with the postal system.

Unfortunately there was a last minute delay affecting some of the DCC Sound fitted models so these models will follow in a separate delivery scheduled for just after New Year – if you ordered a mix of DC and DCC Sound models we will ship the DC models first if we reach your order before the remaining Sound-fitted models arrive.

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Something for Christmas and last posting dates

Looking for a present for a loved one or something for yourself? Our stock system doesn’t easily allow people to see what we have physically available for immediate despatch versus projects that are open for pre-orders as both use the “In Stock” status to allow orders to be placed (NB we indicate in the product descriptions if something is a pre-order for a model awaiting production), so we thought it might be useful to give a quick summary of models we have in stock for immediate dispatch.

We realise that it has been an unusual and tough year for many and we’d like to spread a bit of Christmas cheer, so in the spirit of Christmas we’re offering a 5% discount for orders over £100 between now and 17 December on in stock items (please note that this discount is only applicable for in stock items and won’t work for orders for future products). To get the discount place your order as normal and in the discount code box use the code: 5XMAS2020. The code will only apply to in stock items listed below and we reserve the right to refund any orders mixing in stock and future orders – all orders for models in development should continue to be placed as separate orders per product range.

The last date we can guarantee delivery before Christmas is if we receive your order by 17 December 2020 (for UK orders only, for international orders some of the last guaranteed posting dates have already passed so we can’t guarantee that non-UK orders will be delivered before Christmas but we will do our best).

In stock items (available for immediate dispatch):

N gauge

IPA car carriers: limited remaining stock now on sale!

OO gauge

Please remember the discount code only applies to the items listed on this page and please don’t mix with orders for future projects – thanks!

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Tell us what you want! Really, really want….in O!

As part of the Gauge O Guild’s virtual show and with our O gauge DRS 37/4 being produced in conjunction with Heljan due soon, we thought now was the time to ask O gauge modellers if there is any interest in us scaling up any of our offerings to the senior scale of 7mm/ft.

We’ve created a simple questionnaire with some suggested models we could scale up, such as:

Our forthcoming model of 975025 ‘Caroline’ inspection saloon in N and OO – would you like it in O as well?
Our N gauge Sturgeon/Tench engineers wagons would make impressive wagons with their size in O!
Looking for a general purpose goods van suitable for the mid-1980s to the current day? How about our IZA cargo-twins?
How about our massive KUA nuclear flask carriers in O – the heaviest wagons currently on the network at 160 tonnes loaded across 4 bogies.

Of course if you have another suggestion we’re always open to ideas and you can suggest something else – perhaps you’d prefer a class 92 in O or a 321 (though seriously we’re more likely to start with unpowered rolling stock)! You can select as many models from our list as you would like, but if you make your own suggestion please only suggest one additional model. Just click on the button below to complete the questionnaire. We’ll leave it running for a few weeks to see what interest there is – thanks!

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Goods inbound!

Like London buses our models are never just one arrival at once – both our N gauge IPA car carriers and KUA nuclear flask carriers are on their way to us and should clear customs for delivery to us in the next 7-10 days.

As a result we’ve started to send out balance invoices for the IPA car carriers and we will shortly be starting to send out balance invoices for KUAs. As ever our deposit software can only generate separate balance invoices for each line of your original order(s), and unfortunately it isn’t possible to combine the invoices (trust us it creates a lot more work for us).

If you haven’t received any (or all) of your expected balance invoices please login to your account and check if there are any new invoices available for payment – sometimes the email system doesn’t send off all the notifications.

If you need to change your address, as usual, please update the shipping address in your account – it won’t feed through to your existing orders but we check the account address when we generate the shipping labels.

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Sweet Caroline…rail tour draw and winners!

We spent some time trying to work out the fairest method for selecting winners for places on our exclusive Sweet Caroline rail tour and the best our boffins could come up with was to use Google’s random number generator. Each purchase of 975025/Caroline was assigned an exclusive number according to the date the order was placed. Google’s number generator did its magic and we cross-referenced the draw numbers with order numbers.

You can watch the video of the draw and a bit more of an explanation below (or you can skip to the end if you prefer to just see the winners rather than listen to me waffle on!).

Sweet Caroline rail tour draw for places

We’ll now make contact with all the winners to check their availability. The tour is provisionally booked for 19 May 2021 (subject to any coronavirus restrictions) starting and finishing at Derby. Thanks to everyone that has purchased a model so far – you can still pre-order a model from our webshop.

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Class 128 and the NGS Journal

WR region 128 (as built)
WR 128 with corridor connection, split headcode boxes and sandboxes.

The latest NGS Journal (4/20) states that the order book for the 128s was now open – this is not quite correct.

When we submitted the information for inclusion before the print deadline that was our intention. However in evaluating the CADs we asked the designer to make some improvements which unfortunately took slightly longer than anticipated.

We now have the revised CAD and we’re checking the improvements. once the CAD is approved and finalised we will announce the opening of the order book through our normal channels (our website, newsletter and social media).

We apologise for any confusion, and would like to add that this is no fault of the NGS Journal editor.

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Delivering your parcels…first 128 CAD

WR region 128 (as built)

Revolution Trains is pleased to show the latest CAD images for our forthcoming N gauge Class 128 Parcels unit. We’ve submitted our corrections to the factory and once those are ironed out we will announce the price, versions and open the order book.

The main “spotting” notes between the versions are that the 4 Midland Region 128s were built without a corridor connection and had a centre headcode box, whereas the Western Region 128s were all built with corridors (though many were later removed) and split headcode boxes. Other variations were plated or removed headcode boxes, marker lights, sandboxes on bogies, 3 different types of buffer (clipped, oval or round) and a variety of exhaust types.

WR region 128 (as built)
WR 128 with corridor connection, split headcode boxes and sandboxes.
MR 128 (55987-990) with no corridor and centre headcode box
WR 128 with plated over corridor and marker light in the headcode box
Former WR 128 with plated corridor and removed/plated headcode boxes replaced with marker lights

Once the factory have made the CAD corrections we will finalise the versions we are offering and open the order book (not all variants are shown above eg 55991/2 kept their corridor connections to withdrawal in late 1990 but lost their split headcode boxes) .

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Sonic Models announces new liveries and numbers for 56xx line-up

Sonic Models is offering additional liveries and new numbers to the forthcoming Sonic Models 56xx GWR/BR(W) 0-6-2 tank locomotive in N.

The new versions – and models already announced and previously available to order from Revolution Trains – will all be available only from well known Yorkshire retailer Rails of Sheffield. All existing orders with Revolution will be fulfilled by Revolution and Rails will handle processing and fulfilment of models of all orders from today forward. Production has started and it is anticipated that the models will arrive in the UK during the summer.

The six new variants include three new identities for existing liveries and three all- new versions. The new liveries include GW unlined green with “shirt-button” logo, as used from the mid 1930s until WW2, GWR unlined green with GWR “austerity” block style lettering as applied in wartime and BR unlined black with “BRITISH RAILWAYS” lettering from the early years of nationalisation. Additional numbers are being offered in BR lined green with late crest, BR unlined black with early emblem and GW unlined green with GREAT WESTERN lettering, as these have proved the most popular variants so far.

New versions

S2101-01A: 5643 BR lined green, late crest
S2101-04A: 5619 BR unlined black, early emblem
S2101-06A: 6671 GW unlined green with GREAT WESTERN lettering
S2101-07: 5609 GW unlined green with shirtbutton logo
S2101-08: 6602 BR unlined black with BRITISH RAILWAYS lettering
S2101-09: 5644 GW Unlined green with plain GWR block lettering

Two of the new versions are of locomotives in preservation, and it is anticipated that proceeds will be used to make a donation to their owners to enable this valuable work to continue.

From here on both new and existing 56xx models will only be available to order from Rails of Sheffield. The price of all versions is £109.95.

The complete list of 12 models is as follows:
S2101-01 – 5637. BR lined green, late crest.
S2101-01A – 5643. BR lined green, late crest. New.
S2101-02 – 6681. BR lined green late crest (small) weathered.
S2101-03 – 5633. BR unlined green, late crest.
S2101-04 – 6639. BR unlined black, early emblem.
S2101-04A – 5619. BR unlined black, early emblem. New.
S2101-05 – 5616. GW unlined green with GWR shaded lettering.
S2101-06 – 6623. GW unlined green with GREAT WESTERN lettering.
S2101-06A – 6671. GW unlined green with GREAT WESTERN lettering. New.
S2101-07 – 5609. GW unlined green with shirtbutton logo. New.
S2101-08 – 6602. BR unlined black with BRITISH RAILWAYS letting. New.
S2101-09 – 5644. GW Unlined green with plain GWR block lettering. New.

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KFAs inbound

As I write our KFAs are just leaving the factory to be shipped to the UK.

We didn’t take deposits on the KFAs so the good news is that everyone has paid in full! Please just make sure that your shipping address on your account is up to date (as we will check your order against your account shipping address).

The KFAs are being air-freighted in so we suspect that it will be mid-late next week by the time they’ve got to the UK and cleared customs.

If you’d like to collect your order at Warley then please drop us an email – the easiest way is to reply to your order confirmation – and we will confirm whether it will be possible (if you don’t get a confirmation then we can’t guarantee that we will have your order at Warley). Deadline 12pm on Friday 22/11/19 so that we know what stock to bring to the show!

We will keep this post updated with the latest information, so please don’t send us emails asking for delivery estimates – that just slows down the process for everyone.

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EALNOS MMA/JNA wagon deliveries!

Our 4mm/OO EALNOS wagons are being sent out to our customers and retailers but please be patient as there are several thousand wagons to send out! Once we know that your order has been sent out we will mark your order as completed.

Update (24/10/2019): we’ve sent out all but 2 orders. We will process any postage refunds due as soon as we receive the information from Trains4U.

We’ve sent out all the balance invoices for customers who paid a deposit. If you paid a deposit and haven’t received an email with your balance invoice then please login to your account and check if the balance invoice has been generated – if you are missing any invoice please drop us an email. We will start chasing payments soon so that we can send out more orders.

Please make sure that your address is up to date as we will check your shipping address on your order against the current one on your account details.

Orders will be processed in date order of receipt and will be sent out by Trains4U on our behalf – please don’t ask Trains4U (or us) for an update on your order as that only slows down the process. We all want to send them out as quickly as possible but it will take us a few weeks to get everything sent out.

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Vans ahoy! VEAs at the dock.

The VEA vans produced in conjunction with Sonic Models are due to be unloaded anytime now and we expect to receive them by the end of next week. We’ll get them shipped out to our retailers and customers as soon as possible – if you have ordered direct from us and would like to save a bit of postage by collecting at TINGS then please drop us an email by 31 August (so that we know not to send your order out!) and we will confirm if it is possible. If you place an order between now and TINGS and would like to collect at TINGS then please put a note in your order in the delivery notes and we’ll bring them along for collection and refund your P&P.

In the meantime we thought it would be helpful to show some sample consists for anyone yet to decide on which VEAs they would like. Loosely speaking the late 70s and early 80s the majority of VEAs would have been Maroon, then early 80s started to see the introduction of Railfreight red/grey with the Railfreight Distribution grey with yellow ends introduced in 1990.

If you would still like to purchase some VEAs they are available from some of our retailers or direct from our web shop here.

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You don’t have to be a surgeon to inspect…a Sturgeon!

The first samples of our forthcoming Sturgeon engineers wagon have arrived and barring a few minor changes we’re really pleased with the quality of the samples.  We’ve got a bit more work to do in finishing the assessment and completing livery diagrams, but in the mean time here are some pictures.

Different underframe details


They look even nicer in the flesh and we’ll have them on display at our stand at Model Rail Scotland at the SEC from 22 to 24 February 2019. Please feel free to come and have a look for yourself!

 

 

 

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Extra Pendolino sets and spare Class B tanks for sale – 10am, 2 January

DC silent

1 x 2000A 390001 Virgin Pioneer
3 x 2000B 390005 City of Wolverhampton
3 x 2000C 390006 Tate Liverpool
1 x 2000D 390045 101 Squadron

All 9 car Pendolino sets £335.00.

2 x 2001C  390122 Penny the Pendolino
2 x 2001D 390138 City of London
4 x 2005 390132 City of Birmingham (later red/silver livery with grey doors ie no stripes on doors)
All 11 car Pendolinos £365.00
1 x 2002 390103 Virgin Hero w/Royal British Legion Poppy Logos £375 (includes donation to RBL)
5 x 2004  5-car set £220.00
DCC Sound:
2 x 2501D 390138 City of London £460.00
2 x 2502 390103 Virgin Hero w/Royal British Legion Poppy Logos £470 (includes donation to RBL)
All prices exclude P&P.  As numbers are limited then sales will be restricted to one of each set per customer. These are the only sets that we have – if they are not listed then we have no spare sets.
In addition we will have limited stocks of all Class B tanks except Mobil Charrington red.
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Revolution/Sonic announce first steam loco – GWR 56xx 0-6-2T

Revolution Trains is offering the attractive GWR/BR(W) 56XX 0-6-2 tank engine as its first steam locomotive.

This model is being produced in conjunction with new entrant Sonic Models, and will feature high levels of detailing and a smooth reliable running.

Though the engineer behind the model has a track record of producing highly regarded steam locomotive models in N, the 56XX has been selected in part because it does not feature complex outside valve gear.

200 of the attractive 56XX locomotives were built at Swindon (with a small number built in the North East due to capacity issues) and designer C B Collett borrowed heavily from the proven south Wales valleys engines inherited by the GWR.

The locomotives were reliable and sturdy and while originally intended for traffic in south Wales they rapidly saw service across the GWR, and subsequently the western region of British Railways, from the South West to the Midlands.

All were withdrawn by the end of 1965, and nine are now preserved.

The models will be available in GWR green, BR green and BR black, and will feature coreless motors, NEM 6 pin decoder socket, NEM couplers, original or later style driving wheel balance weights, Swindon or Armstrong (NE) safety valves, detailed cab interior and accessory detail pack.

Delivery is expected Q4 2019.

CAD for this model has now been approved and an image is attached. Like the VEA van produced by Sonic models, this product is not being crowdfunded but sold via retailers in the traditional way.

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All roads lead to…..Revolution! See us at Warley – stand D53

With just a few days to go until the Warley 2018 model railway show at the NEC in Birmingham, we would like to invite you all to our stand (D53) to see our latest developments, pick up a catalogue and see our latest samples.  We will have the first tooled sample of an all new OO/4mm product (which will be available for order in the Shop section of our website from Saturday morning).

We will also have on sale (all N gauge at the moment):

  • Class B 35T tanks (not many)
  • 40′ hicube containers
  • 20′ tanktainers – if you pre-ordered tanktainers and would like to collect at the show please bring a copy of your order with you as they arrived just after our deadline for arranging collection in advance, but we will do our best!
  • Possibly a handful of Pendolino sets

If you’ve requested pickup of an order then you should have had confirmation – if you haven’t had confirmation then we can’t guarantee that we will have your order with us! If you have had confirmation that we can fit your order in then you’ll be able to pick it up on Saturday or Sunday.

You can find us on stand D53 next to the bus that our friends at Rapido Trains Inc have brought into the show.

Click on the image for a larger version!

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Sturgeons for sale!

The CAD for our N gauge Sturgeon wagon  is complete and these wagons are ready to start tooling.  The order book is now open and we can confirm that the price is £35 per wagon. We issued discount codes with our Class B tanks and IZAs but as the CAD took us longer than anticipated some of the codes have expired, so as a result we have discounted the Sturgeons for everyone automatically (ie no need for a code) by £2/wagon ie £33/wagon until 21 December 2018.  We thought that was the fairest way as some people will have old discount codes that they might have lost etc…plus it meant we could offer a £2/wagon discount on singles and triples (the discount codes would have only given £2 off a triple pack not £2/wagon).


If you are interested in these models please don’t delay ordering – the faster we reach the funding target the quicker we can get them tooled and into production.  One reason the Cargowaggons took less than a year from announcement to production was that customers stepped up very quickly with orders.

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TEA for 4(mm)…

They’re here…well very nearly anyway!  Rapido told us recently that production of our 4mm/OO TEA tanks was complete, so we took the decision to airfreight in the complete consignment of TEA tanks and the models should be with us later this week.  As usual, customers who paid in full when they ordered are likely to receive their models first as there is less admin for us.

Delivery and invoicing arrangements:

Paid in full: if you have moved over the past couple of years please check that your shipping address (not the address on the order!) is correct on your account on our website. We will start sending out models paid in full over the weekend of 17/18 November.

As we pick and pack your order we will update it to the latest shipping address saved on your account.  We will send out fully paid orders in order of when we received your order.  Once your order has been despatched we will update it to “Completed” status and you should receive it from the Royal Mail a few days later.

Paid a deposit: generating all the balance invoices will take us some time (please remember we do this in our spare time!), however we know that some of wish to get your balance paid as quickly as possible so that you can get your hands on your models!

You have two choices:

Option 1 – wait for our invoice: please be patient and wait for us to generate your balance invoice(s).  The balance invoices will be emailed to you and will include details of how to pay.  Once your balance is paid then your order will be placed in our order queue for picking and posting.

Option 2 – I would like my order soonest!: if you would rather get your balance paid and your models as quickly as possible then we have a shortcut for you! It means more work/thought for you so if you are not in a hurry or if you are not sure then stick with option 1!

Go onto our website and login to your account – check that your shipping address is correct (and update if necessary).  Open your order for your TEAs and you will see at the bottom of the deposit order a line saying “Future Payments” – this may or may not include VAT – if it says excludes VAT and you live in the UK or other part of the EU then you must add VAT to the Future Payment amount (ie multiply the future payment amount by 1.2). Go to our website here and enter your balance amount and follow the payment instructions.  If you have multiple orders you are welcome to add all the balance together to make one payment.

No need to email us to say you have paid – we will match your payment against your order(s) and mark your order(s) as paid (“processing” on our system), then your order will go into our queue for picking and posting.

As a check your balance should equal your deposit less the amount of shipping you paid on the deposit.  For example, if you paid a £20 deposit and £6 P&P then the balance should be £20. If you are not confident about calculating the correct balance amount then please stick with option 1.

Please do not:

  • email us asking where your order is – that just slows us down replying to you rather than packing orders; or
  • email us to confirm that your order is correct – we will contact you if it isn’t; or
  • email to confirm that you have paid the right amount – again we’ll tell you if you haven’t; or
  • email to change your shipping address – you can do that online on our website! 

Sorry if this seems unfair, but this is really important as all of these individual emails take time out of us sending out your models!  We’ll let everyone know once we’ve done the first pass through the order list – that is the point that we will ask you to send us emails if you haven’t received your order or balance invoice(s).

Collection at Warley: for those of you that wish to collect your models at Warley, this will be possible but only by prior arrangement!  If you collect your order at Warley we will refund your P&P charge after the show.  If you have a balance to pay then it will be possible to pay your balance at the show (your P&P charges will be deducted from your balance when you pay).

If you wish to collect your order at Warley please email us by the end of Monday 19 November, preferably with your order number(s). We will confirm by email by Thursday 22 November whether your order will be available for collection.  If you haven’t received a confirmation from us by Thursday 22/11 there is no guarantee that we will have your order for collection!

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Cargo inbound and Cargowaggon couplers

Cargowaggon deliveries and balance invoices

As many of you will have noticed our Cargowaggon twins arrived in the nick of time on Friday 7 September – just as the doors were closing on setup for TINGS.  This allowed us to hand out orders to customers at the show and save time picking/packing/posting on the rest of the orders.

We’ve got a few bits of admin to complete before we can start sending out the rest of the orders – namely closing off all the orders collected at TINGS and refunding any P&P due so that we don’t send out duplicates.

Then we will send out orders in the following order (in date order of when the order was placed):

  • Orders paid in full;
  • Balance invoices, which we will send to you and then despatch in order of when balance received.

NB based on previous experience it will take us a few weeks to process all the orders in our spare time so please bear with us.

If you like the look of the wagons but didn’t place an order then all the retailers listed on our website should have received their order by early next week (w/b 17/09/18).

Cargowaggon Coupler Conundrum

Some customers have reported that when coupling their new IZA twins together for the first time, in a small number of occasions the coupler pocket cover inside the wagon comes loose, meaning the socket can be pushed out of its housing and up into the wagon body.

At the factory both halves of the wagon were fitted with inner couplers.  This ensures customers have a spare, and also “loosens” the coupler pocket, but obviously on one car needs to be removed before the twin can be joined up.

To avoid any possibility of the socket becoming dislodged you may wish to remove the bodies of both wagons before coupling.  This is very simple as they just pull off with gentle pressure.

Then the coupler pocket covers can be held firmly in place with a fingertip as the model is clicked together.

If the cover does come loose, replacing the wire spring and putting the coupler pocket back in place – maybe with a tiny amount of adhesive – is straightforward.  Even if the spring is lost and the coupler will not automatically self-centre it will still function.

Because of their long wheelbase, the models will drag a little around curves less than 12″ radius.  If your locomotives are having trouble you may wish to remove the weights inside, which can be simply unscrewed.