The Sentinel is available in blue or green and comes complete with a realistic smoke generator, a steam sound unit with a whistle, a rear wooden deck and an upholstered seat pad. (See videos of it in action, together with a brochure and pictures of completed models on the YouTube links at the bottom of this page).

(Our products are sold as complete body kits – Individual parts / components are not sold separately)

The models are built to 3″ scale (1:4). Approx size:

  • Length = 1.45m (57 inches)

  • Width = 0.53m (21 inches)

  • Height = 0.71m (28 inches)

The kits are manufactured from laser cut, welded steel and are powder coated in blue or green. 

They are quick and easy to assemble (it is possible to complete them in a few days), as the pre-coloured welded assemblies bolt together and then fix straight into the existing holes on a Shoprider Sovereign 4 mobility scooter chassis (The scooter/motorised chassis is NOT included in the body kit – Please see details of what you need and how to find one via the main menu – we may also be able to help you find one, and we do try to keep a couple in stock, which are available for purchase separately).

The split chassis from the mobility scooter means that the rear motor section can be quickly removed, separating the vehicle into two parts (with the longest, front, section being around 1m long). This makes lifting, storage and transportation much easier and also means that it is possible to transport the vehicles in the back of many family cars, without the need for a trailer.

All the new electronic modules and components are supplied with adaptors and connectors that plug straight into existing connectors on the Shoprider Mobility Scooter, so there is no need for complex electrical connections, cutting wires or soldering. 

When mounted on the mobility scooter chassis, the kit makes a realistic, strong and powerful miniature vehicle, which can easily carry a driver and passenger, a heavy load, or tow a small trailer.

You can also add your own enhancements:

Sentinel with customer added barrels, rear chains, chimney cap and chicken!!
Non-standard red with customer added drop-sides, air horn and graphics (which should be read in a Scottish accent!)

As the original mobility scooter is reported to have a range of up to 15 – 20 miles with a set of fully charged good batteries, the completed models should have plenty of charge for a day at a rally, show or carnival.

Smoke & sound

The finished model looks and sounds like a real miniature steam engine, as it has a very effective smoke generator (which runs on cold water) and a steam sound unit which synchronises the chuffing sound to the movement and speed of the vehicle. It also has a whistle and a manual mode, so that the engine can be set to chuff while it is stationary.

Seating options

The rear deck has hinged flaps that flip up to give a more comfortable seating position. Alternatively, you can retain the original seat and steering from the mobility scooter for a higher seating position.

Two alternative seating arrangements.

The standard kit includes:

  • Fully illustrated step-by-step instructions.

  • Steel upper chassis, which bolts into the existing fixing holes on a Shoprider Sovereign 4 mobility scooter.

  • Laser cut, welded and pre-assembled steel cab, dummy boiler, water tank, side panels, foot boards, mudguards and steering.

  • Powder coated finish in either blue or green.

  • Bespoke sound unit with realistic synchronised steam chuffing sound and whistle. The unit also has a manual mode, so that it can also make a chuffing noise while stationary.

  • Smoke unit (runs on cold water)

  • All nuts and bolts.

  • Wooden rear deck with hinged flaps that flip up to give a comfortable seating position.

  • Upholstered foam seat pad.

  • Electrical connectors which plug straight into the existing connectors on the Shoprider mobility scooter chassis. (so there is no need to cut wires or solder connections).

  • Handle bar grips

  • Brass effect edge beading for the cab.

Note: The motorised mobility scooter chassis is NOT included in the kit. (click on main menu for more information).

Optional Extras:

(Additional cost applies – see price list.)

Black Tyres – good quality knobbly 4 ply. (Tyres only – to replace the standard grey tyres on the mobility scooter – wheel rims not included)

Tow Hook with pin and fixing bolts.

Flashing amber roof light with switch, wiring and connectors.

Graphics are available in two standard designs (supplied on contact sheet for customer to apply):

‘Sentinel Steam Waggon’ – cream letters with black shadow and yellow lining.

‘BASS’ Brewery – Gold large lettering with red shadow, white small lettering and red lining.

Bespoke / personalised graphics to the customers own design can also be supplied. This can be a great way to promote a company or business at shows and carnivals, or just to personalise your kit.


Videos, brochure & pictures of the Sentinel Steam Waggon.

Click on the images below to open the video on the YouTube website.

If using a mobile device, tilt to horizontal position for a larger view or, if using a PC or TV, click on the small square in the bottom right hand corner on the video for a full screen view. When you’ve finished watching the video, just press the back arrow on your devise to return to our website. (Note. As the videos play on the YouTube website, we have no control over and are not responsible for any follow-on video suggestions or auto-play videos made by YouTube after our video has played, or for cookies used by their website).

The Sentinel Steam Waggon in action.

Customer reviews with photos and videos.

Sentinel Brochure.

Phone us