OO9 Gauge Kerr Stuart No.4415 Narrow gauge diesel kit 009

This Loco takes inspiration from the Kerr Stuart Steam Loco Works number 4415.  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 so that it will look really nice on your layout. We recommend either 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  and cab interior, it is unpainted. The pictures showing the Kato chassis and primer coated model are for information purposes only, you will need to supply a chassis. See our shop for a suitable motor chassis.

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

What exactly is included in this kit?

The kit includes a high-detail resin body shell, a matching kit chassis that clips onto a Kato 11-109 motor bogie chassis, and a separate cab interior piece with a 3D scanned driver figure. All parts are supplied unassembled, unprimed, and unpainted, with supports removed.

Do I get the Kato 11-109 motor chassis with this kit?

No, the Kato 11-109 motor bogie chassis is not included. The photos showing the Kato chassis and primed model are for information only. You will need to supply your own Kato 11-109 chassis or purchase a suitable motor chassis separately.

What prototype is this loco based on?

This kit takes its inspiration from Kerr Stuart Steam Loco Works number 4415. It is not an exact scale copy of that locomotive, but a model clearly influenced by its appearance and proportions.

Where are the models made and what material is used?

All models are printed in the UK using high-detail resin. Each item is cleaned and cured by hand before packing, with supports removed and only minor finishing typically required before priming.

Is this kit suitable for beginners?

Yes, this is designed as an easy-to-build kit. The chassis clips onto the Kato 11-109 motor bogie, and the body is a simple drop fit onto the chassis, making it a friendly project for anyone with a little model railway or kit-building experience.

Is the kit supplied painted or primed?

No, the kit is supplied unprimed and unpainted. All parts are ready for you to prime, paint, and finish in your own preferred livery.

The body does not seem to clip properly onto my Kato 11-109 chassis. What should I check?

First, make sure you are using the correct Kato 11-109 motor bogie chassis. Check that there are no bits of leftover resin, flash, or sprue in the clip areas of the kit chassis. A gentle clean-up with a fine file or sanding stick around the clip points and inside the body can help. Do not force the parts; they should clip and drop into place with firm but controlled pressure.

My parts arrived with small marks or slight ridges. Is this normal?

Some very fine support marks or layer lines can be present, even though we remove supports and clean each model by hand. These can usually be smoothed with light sanding using fine-grit paper or sanding sticks before priming. Take care not to oversand delicate detail.

The resin feels delicate. How should I handle it?

Resin can be quite brittle compared with plastic. Handle parts by the thicker sections where possible, avoid flexing thin details, and do not drop the model. Work over a soft surface (such as a cutting mat) to reduce the risk of damage if something slips.

What if my kit is damaged in the post?

If your kit arrives broken, please take clear photos of the damage and the packaging and contact us. We will review the images and do our best to help. We cannot be responsible for breakages that occur after safe delivery, such as accidental drops during assembly.

My Kato 11-109 chassis is very tight to remove once fitted. How can I get it out safely?

The Kato chassis can be carefully unclipped and removed if you want to reuse it. Work slowly and evenly from both sides, gently easing the clip points apart rather than pulling on the motor block itself. Using a thin plastic or wooden tool to help flex the clip areas can reduce the risk of damage.

The primer is not adhering well to the resin. What can I do?

Ensure the parts are clean and free from dust or skin oils. A quick wash in mild soapy water, followed by a thorough rinse and full drying, can help. Use a suitable primer such as standard car primer or Tamiya primer, applied in light coats. Heavy coats can cause runs and poor adhesion.

How do I fit the body to the chassis?

Once your Kato 11-109 motor bogie chassis is clipped into the kit chassis, the body is designed as a simple drop fit. Align the body carefully over the chassis and gently lower it into place. It should sit neatly without forcing. Test fit before painting so you are familiar with the fit and clearances.

Can I remove the Kato chassis later if I want to use it in another model?

Yes. The kit chassis is designed so that the Kato 11-109 motor bogie chassis can be carefully removed. Take your time, gently easing the clip points until the motor chassis can be lifted out. Avoid twisting or levering against delicate resin details.

How should I prepare the resin parts before priming?

Check for any remaining support marks or small bumps and lightly sand them. Then:

• Rinse the parts in mild soapy water.
• Use a soft brush to remove any dust or residue.
• Rinse with clean water and allow to dry completely.
• Handle with clean, dry hands or gloves when priming.

What primer should I use?

We recommend either standard car primer (from an automotive spray can) or Tamiya primer as a base coat. Apply several light coats rather than one heavy coat, allowing each layer to dry fully before the next.

What type of paint works best on this kit?

Acrylic paints work very well over a properly primed surface. They are easy to use, dry quickly, and are ideal for building up thin layers of colour and weathering effects on resin models.

How should I paint the cab interior and driver?

The interior and 3D scanned driver are separate pieces so you can paint them before final assembly. It is usually easiest to:

• Prime the interior and driver separately.
• Paint the interior details and driver clothing and skin tones.
• Allow everything to dry fully.
• Then fit the interior inside the body before attaching the body to the chassis.

Should I assemble before or after painting?

Because the body is a drop fit and the interior is separate, many modellers find it best to paint in sub-assemblies: paint the body, interior, and driver separately, then assemble once the paint is fully dry. This approach gives better access to details and a cleaner finish.