OO9/009 Doble Sentinel Steam 7192 Locomotive fits the Kato chassis 11-109

Introducing the London, Midland and Scottish Railway (LMS) Sentinel No. 7192, a stunning geared steam locomotive for your model train collection. This locomotive was originally built in 1934 by the Sentinel Waggon Works of Shrewsbury, with maker's number 8805 on LMS Lot 111. With its Abner Doble boiler and 4-cylinder compound arrangement, this locomotive is a marvel of engineering and design.

Although an order for an additional locomotive and three railcars was later cancelled, the LMS Sentinel No. 7192 continued to serve faithfully until its retirement in 1963. 

Don't miss out on the chance to own a piece of history with the LMS Sentinel No. 7192 model train. Order now to experience the beauty and power of this iconic steam locomotive.

The kit is unpainted and comes with the body, snap on chassis to fit onto a Kato motor, interior boiler piece a 3d scanned driver. The painted pictures are shown as examples only and the motor bogie and wagon are not included.

The kit chassis is designed in such a way to clip easily onto a Kato 11-109 motor  bogie chassis. The Kato chassis  can be carefully removed if you want to use it again on something else. 

The body is also a simple drop fit onto the chassis to allow for painting prior to assembly. We have also added an Interior piece that can be painted seperately that depicts the interior along with a 3d scanned driver. This is an easy to build kit, and can be painted with standard car primer or Tamiya primer as a base coat and finished with acrylic paints

We print our own models here in the UK using high detail resin. The sale is for the kit chassis, body, driver , cab interior, it is unpainted. The pictures showing the Kato chassis are for information purposes only, you will need supply one. See our shop for suitable motor chassis.

Background:
Abner Doble also designed and built a steam-powered locomotive called the Doble, which was based on many of the same principles as the Sentinel locomotive. The Doble used a water-tube boiler and multiple pistons to drive the wheels, which allowed it to be more efficient and powerful than traditional steam locomotives.

The Doble Ultimax was tested extensively and was praised for its performance and efficiency. However, it faced many of the same challenges as the Sentinel locomotive, as diesel engines were becoming more popular and cost-effective.

Despite the challenges faced by steam-powered locomotives, Abner Doble's innovations in steam technology paved the way for later developments in power generation and transportation, and he remains an important figure in the history of engineering and innovation.

Abner Doble was an American mechanical engineer and inventor who is best known for his contributions to the development of steam-powered vehicles. He was born in San Francisco in 1890 and died in 1961.

Doble started his career as a teenager, working with his father, William Doble, who was a steam engine manufacturer. In the 1920s and 1930s, Abner Doble designed and built several steam-powered cars, including the Doble Detroit and the Doble Model E. These cars were notable for their efficiency and speed, and they could travel long distances without needing to be refueled.

One of Doble's most famous creations was the Sentinel Locomotive, which he designed in the 1940s. The Sentinel was a steam locomotive that was notable for its advanced design and efficiency. It used a unique "water tube" boiler that heated the water much faster than traditional boilers, and it had a series of pistons that drove the wheels, rather than the traditional steam cylinders.

The Sentinel was tested extensively in the United States and was praised for its speed and efficiency. However, the locomotive was never widely adopted, in part because diesel engines were becoming more popular at the time.

Despite this, Doble's contributions to the field of steam-powered vehicles were significant, and he is remembered as one of the most important inventors of his time.

Finishing: All items are cleaned and cured by hand. They are unassembled and ready for you to prime and paint. We do our very best to remove support marks but some fine sanding may be required. All pieces and parts come unprimed and unpainted with all supports removed. Please do bear in mind that resin can be quite delicate so try to avoid dropping your parts! Sadly, we can't be held responsible for breakages once your item has arrived. However, if the piece is broken in the post, please provide images and we will of course see what we can do to help.

FAQ – Product FAQs

LMS Sentinel No. 7192 Model Kit – Frequently Asked Questions

What exactly is included in the LMS Sentinel No. 7192 kit?

The kit includes a high-detail resin body shell, snap-on kit chassis designed to fit a Kato 11-109 motor bogie, an interior boiler/cab piece depicting the interior, and a 3D-scanned driver figure. All parts are supplied unassembled, unprimed and unpainted.

Is the Kato 11-109 motor bogie included with the kit?

No, the Kato 11-109 motor bogie chassis is not included. The photos showing the Kato chassis and any wagons are for illustration only. You will need to supply your own Kato 11-109 or another suitable motor chassis from your collection or our shop.

Is the model supplied painted like in the photos?

No, all parts are supplied unpainted. Any painted models shown are examples of how the locomotive can look once finished. You will need to prime, paint and assemble the kit yourself.

What scale or gauge is this kit intended for?

The kit is designed to clip onto a Kato 11-109 motor bogie chassis, which is commonly used for OO9 and similar narrow gauge applications. Please check that this chassis is suitable for your chosen scale and layout before purchase.

Where are the models produced?

All models are printed in-house in the UK using high-detail resin. Each item is cleaned, cured and checked by hand before dispatch.

How robust is the resin, and how should I handle it?

The resin is detailed but relatively delicate compared to metal or chunky plastic. Handle parts carefully, avoid dropping them, and take care when test-fitting or sanding. We cannot be responsible for breakages after delivery, but if something arrives damaged in the post, please send photos and we will do our best to help.

My kit arrived with some faint marks or small nubs on the surface. Is this normal?

Yes, this can be normal with resin printing. We remove supports and clean each part by hand, but very fine marks or tiny nubs may remain. These can usually be smoothed with light sanding using fine-grit abrasive before priming.

The body doesn’t seem to drop onto the chassis properly. What should I check?

First, ensure that the Kato 11-109 motor bogie is fully seated in the kit chassis and that there are no sprue remnants or support nubs in the locating areas. Then:

• Check for any slight warping or flash and gently sand or trim as needed.
• Make sure the chassis is oriented correctly relative to the body.
• Test-fit without glue and adjust in very small steps until it becomes a simple drop fit as intended.

The kit chassis won’t clip securely onto my Kato 11-109 motor bogie. How can I fix this?

Check that the Kato chassis is the correct 11-109 motor bogie and that it is clean and free of burrs. Then:

• Align the clip points carefully and apply even, gentle pressure.
• Inspect the clip areas on the resin chassis for any leftover support material and carefully remove it.
• If the fit is very tight, lightly sand the inside of the clip areas and test frequently.

My locomotive runs, but the body rubs on the wheels or bogie. What should I do?

Remove the body and check clearance around the wheel arches and bogie cut-outs. Lightly sand or trim any areas that are touching the wheels or bogie. Ensure the interior piece and driver are seated correctly and not fouling the mechanism.

The surface looks slightly rough after priming. How can I improve the finish?

Allow the primer to dry fully, then gently wet-sand with very fine-grit abrasive (e.g. 800–1200 grit) to smooth the surface. Clean off dust, re-apply a light coat of primer, and repeat if necessary until you are happy with the finish.

Can I remove the Kato 11-109 chassis later and use it for something else?

Yes. The kit chassis is designed so the Kato 11-109 motor bogie can be carefully unclipped and reused on another model if you wish. Take your time and support both the resin chassis and the Kato unit while unclipping to avoid stressing the parts.

Do I need to do any preparation before priming and painting?

Although the parts are cleaned and cured, it is good practice to:

• Inspect for any remaining support marks and gently sand them away.
• Lightly wash the parts in lukewarm water with a small amount of mild detergent, then allow them to dry fully.
• Handle with clean hands or gloves to avoid grease on the surface before priming.

What primers and paints work best on this kit?

The kit takes paint very well with standard hobby products. As a base coat, we recommend either standard automotive (car) primer or Tamiya primer. Once primed, you can finish with acrylic paints in your preferred brand and colour scheme.

Should I assemble the model before or after painting?

The body is designed as a simple drop fit onto the chassis specifically to allow painting before final assembly. Many modellers find it easiest to:

• Prime and paint the body, interior and driver separately.
• Detail and weather each part as desired.
• Then assemble everything once the paint is fully cured.

How should I paint the interior and driver figure?

Prime the interior piece and driver with the same car or Tamiya primer you use on the body. Then use fine brushes and acrylic paints to pick out clothing, controls and interior details. Painting these parts separately before fitting them into the cab makes the work much easier and cleaner.

Do I need any special glue for assembly?

The body is a drop fit and the kit chassis clips onto the Kato 11-109, so minimal glue is required. For any joints you do wish to fix permanently, a good quality plastic or cyanoacrylate (super glue) suitable for resin is recommended. Always test-fit first and use small amounts to avoid excess glue on visible surfaces.