This is a list of the different designs made by Maxitrak since 1978.
It includes several models using the same name, they are shown as different designs where the new engine is a complete redesign. The second engine is designated as Mk 2 though the company never used this as a description.
There are also variations of a standard design for different markets, American, German, etc. Where these were marketed under different design names all variations are shown as different designs

SIMPLICITY   5” gauge   0-4-0 battery electric, diesel outline.                                                  
Designed by A. Probyn                                     
Introduced 1978 discontinued 1983
This was the first Maxitrak design and used a brazed steel chassis with a glass fiber body.
Early bodies had a wooden frame in the base, there are moulding differences in bodies, some having a bar down the radiator (three part mould) and some without (five part mould).

SIMPLICITY 2     7 ½’ to 5” gauge convertable 0-4-0 battery electric, diesel outline.
Designed by A. Probyn
Introduced 1979 in production 2006
A larger version of the original Simplicity this engine is gauge convertible though intended primarily for 7 ¼” use. The first batch had a vertical motor mounted in the cab driving through a bevel gear set. This was changes to a horizontal transverse mounting with all chain drive. Early bodies had a wooden base frame, otherwise there have been very few changes in the body. Motors used include Lucas, Fracmo and Bosch.
There are many variations on this design including 0-4-0 and 0-6-0 with side rods, Petrol hydraulic drive and rack equipped. First resistance later electronic control used.

RUBY              5” gauge  0-4-0 tank/tender steam engine
Designed by A. Probyn
Introduced 1980  discontinued 1983
This is the original Ruby design using a marine type boiler with circular firebox and steel chassis. The design has been marketed as drawings and castings by Maidstone Engineering for many years. Maxitrak only made twenty engines to this design in the years shown, all subsequent engines are home built. For identification Maxitrak built engines have the axleboxes retained with a backplate (except the prototype).

MT3                  5” gauge 0-4-0  battery electric
Designed by A. Probyn
One chassis only built 1982
The MT3 was an experimental design for a locomotive with a box section folded steel chassis and one piece drop on GRP body. The chassis was built and run, not continued with and subsequently sold about ten years later. The body was never built.

PEARL             5” or  71/4” gauge 0-4-2  saddle tank steam engine.
Designed by A. Probyn
Introduced 1982  in production 2006
A larger steam engine for 7 ¼” gauge but also available in 5”. Steel chassis with many cast aluminium parts, originally with round rods and split bearings. Conventional flat rods used since 2000.

CORONATION      5” gauge 0-4-0  battery electric, diesel outline.
Designed by A. Probyn
Introduced 1983 in production 2006.
Coronation was part of the major redesign of Maxitrak engines using many cast aluminium parts. This engine has a cast chassis, bonnet and cab. The motor is mounted transversely under the cab floor with a direct gear drive to the back axle. The main changes in the production run are; Klaxon, Fracmo and Parvalux motors, electronic control first as an extra and then as standard. Steel then sand cast then lost wax cast side rods.

SIMPLICITY (mark2)  5” gauge 0-4-0 battery electric, diesel outline.
Designed by A. Probyn
Introduced 1983 discontinued 2002.
An all aluminium version of the earlier Simplicity with many part in common to Coronation. This engine also had the same motor and controller variations with an extra round side rod variant.

DIXIE   5” gauge 0-4-0 saddle tank steam
Designed by A. Probyn 
Introduced 1983 in production 2006
The first of the new generation steam engines with cast aliminium chassis, available with slip eccentric or Hackworth valve gear. Side rods were originally steel, later changes to sand and the lost wax cast gunmetal, and back to steel. Crosshead changed from prefabricated steel to cast gunmetal. Makers plate originally cast on to the bunker, later a separate etched plate.

RUBY (Mark 2)     5” gauge 0-4-0  side tank steam.
Designed by A. Probyn
Introduced 1984 discontinued 2002 (built after to special order)
This version of Ruby looks almost the same as the first but is very different in design. It has the cast aluminium chassis common to the Dixie and a conventional locomotive boiler. For easy identification the tanks do not blend in to the boiler like the earlier engine. Crosshead and side rod variations are as Dixie.

OPAL    5” or 7 ¼” gauge 0-4-2 side tank steam engine.
Designed by A. Probyn
Introduced 1985 in production 2006
A side tank version of Pearl using the same chassis, boiler and cylinders, variations as Pearl.

CONGRESS  5” / 4 ¾” gauge 0-4-0 battery electric, diesel outline.
Designed by A. Probyn
Introduced 1985 discontinued 2002
An American switcher using Coronation parts. The first five had Simplicity chassis then Congress had its own version of the aluminum chassis with knuckle couplers. Most exported to the USA.

AVELING & PORTER  3” scale traction engine.
Designed by A. Probyn and J. Butler
Introduced 1986 in production 2006
A new venture in to large road steam using many large aluminum castings. Crank shaft variations include silver soldered, heat shrunk and welded. A showmans conversion set is available along with a purpose designed drivers truck.

SWALLOW   5” 0-4-0 side tank steam engine.
Designed by A. Probyn
Introduced 1987? in production 2007
A standard gauge version of the small steam engines using a modified Dixie chassis. Cast aluminum cab and tanks. Crosshead and rod variations as Dixie. Walsherts or slip eccentric valve gear.

RUSTON   5” gauge battery electric, diesel outline.
Designed by A. Probyn
Introduced 1987 Discontinued 2002
The first version of this popular engine, it uses the same aluminum chassis as the second type Simplicity but has a sheet steel body with open cab on four square supports. Side rods started round then changed to sand and later lost wax cast gunmetal flat rods. Identified from the later Ruston by the side rods and open cab.

LIL JO    5” or 7 ¼” gauge  0-4-2 tank engine, steam.
Designed by A. Probyn
Introduced 1989 In production 2007
An American outline engine using some Pearl parts, Lil Jo has it’s own bar frames and American style cylinder sets. Built in the following wheel arrangements to special order, 2-4-0 tender, 0-4-0 side tank, 2-6-0 tender, 2-6-2 side tank, 0-4-4 Forney tank.

INVICTA    7 ¼” gauge sit in loco, petrol powered.
Designed by A. Probyn
Introduced 1989? one built
Sheet steel body with sit in cab, Honda 8h.p. engine with Eaton hydraulic gear box. Later modified to 10 ¼” gauge by Miniature Railway Supply Co.

ARTHUR  5” or 7 ¼” gauge 0-4-2 side tank steam engine
Designed by A. Probyn
Introduced 1990 Special order from 2003 onwards
A German version of Opal based on locos produced by Arthur Koppell before the first war. Most parts common with Opal but with German cab and dome mounted regulator

INVICTA   15” gauge  0-4-0 petrol hydraulic.
Designed by A. Probyn
Introduced 1991? one built
This is the largest Maxitrak loco to date, twin cylinder Honda 13h.p. engine, hydraulic drive. Made for Markeaton Park Railway Darbyshire.

WARSHIP CLASS   5” gauge battery powered diesel outline.
Designed by A. Probyn
Introduced 1991 in production 2006
The first main line diesel, class 42 “Warship”, western region British Railways.
Glass fiber body, lost wax detail castings, two motors with tooth belt drive. Four gear driven motors used on modified bogie from 2002/3. Some bogie detailing changes from metal to resin casting.

AVELING LORRY   3” scale, steam.
Designed by A. Probyn
Introduced 1993  Special order from 2003 onwards.
A lorry based on the Aveling traction engine components, chain drive.

BURRELL  1” scale gas or coal fired steam traction engine
Designed A. Probyn and B. Davey
Introduced 1994 in production 2007
A smaller traction engine, available as agricultural, road or show versions. Some white metal detail parts changed for resin molded, rear hub centers changed from brass to resin.

HUDSON  7 ¼” sit in 0-4-0 petrol hydraulic.
Designed by A. Probyn
Introduced 1995? Produced in small numbers since.
A side ways sitting open cab contractors type engine, 3.5 or 5 hp Honda engine with hydraulic drive. Also made 24 Volt electric and 10 ¼” gauge to special order.

F/7    5” / 4 3/4” gauge battery electric, American diesel outline.
Designed by A. Probyn
Introduced  1995? In production 2007
The F7 has a glass fiber body originally made by Keith Mc Donald, new Maxitrak molding introduced 2007. Originally two motors and tooth belt drive fitted, updated with four motors and gear drive as Warship. B units made to special order

ATKINSON   1” scale steam lorry, radio controlled
Designed by B. Davey
Introduced 1995 in production 2006
A small radio controlled steam lorry using Cheddar Models “Puffin” steam plant with open cab and box body.

SAPPHIRE  5” gauge 0-4-0 saddle tank steam engine
Designed by A. Probyn
Introduced 1995? in production 2006
A round top saddle tank and full cab version of the Dixie design. Prototype engine has a slightly smaller size tank to production models. Based on Bagnall prototypes.

PLYMOUTH  5” or 4 ¾” gauge 0-4-0 battery electric diesel outline.
Designed by A. Probyn
Introduced  1996? Discontinued 2002
This is an American version of the Ruston, this shared the chassis, motor and drive system but had a Plymouth radiator and cab. It was fitted with the straight stack type exhaust and headlamp with a bell as an option.

DEUTZ        5” 0-4-0 battery electric diesel outline.
Designed by A. Probyn
Introduced 1996? Discontinued 2002
Deutz was the German version of Ruston and used the same aluminum chassis with rod drive. The radiator was Deutz style cast in aluminum, a full cab with one front window, cut away sides and open back was used. As standard three headlights and an exhaust running up the front of the cab were fitted.

CLASS 45   7 ¼” gauge battery electric, diesel outline.
Designed by A. Probyn
Introduced 1997? two built
A large main line diesel with glass fiber ends and a composite steel and wood body. Six motors and tooth belt drive. Second engine built to 7 ½” gauge and exported to the USA.

JACK     5” or  7 ¼” gauge 0-4-0 well tank steam engine.
Designed by A.Probyn
Introduced 2000 in production 2007
Based on the 18” gauge Hunslet locomotive Jack this is a large model on 5” gauge, with walsherts valve gear.
 
SENTINEL  1” scale steam lorry, radio controlled.
 modified by A. Probyn.
Introduced 2000 in production 2007.
Sentinel uses the same mechanics as Atkinson, with a modified chassis and different front wheels. Full cab DG4 type and brewers dray body as standard. Engine units and boilers from 2006 by ACE engineering and Finescale.

JUBILEE  5” gauge  0-4-0 battery electric, diesel outline.
Designed by A. Probyn
Introduced 2002 in production 2007
An all steel bodied standard gauge diesel shunter based on the Sentinels of the 1960’s.
This was the first engine of the new generation electric models having one motor per axle and an all steel chassis with springs.

HALL  5” gauge 4-6-0 GWR steam loco
Designed by A. Probyn
Introduced 2003, joint production with L.A. Services, no complete engines produced by Maxitrak.

RUSTON (Mk 2) 5” gauge 0-4-0 battery electric, diesel outline.
Designed by A. Probyn
Introduced 2003 in production 2007
This is an updated version of Ruston using the same chassis, motor and wheels as Jubilee, now fitted with a full Deutz style cab. Radiators resin molded on later engines. This is the engine first made in China with three batches produced 2004, 2005 and 2006 so far.
Identified from the mk.1 version by the steel chassis, no side rods and full cab

DEUTZ  (Mk 2)  5” gauge 0-4-0 battery electric, diesel outline.
Designed by A. Probyn
Introduced 2003 in production 2007
Like the updated Ruston this is the updated version of the Deutz, only the radiator is different. The new version of Deutz comes as standard with the Ruston exhaust and a single headlamp. A number of Deutz’s are Chinese Ruston conversions.
 
PLYMOUTH (Mk 2)  5” or 4 ¾” gage 0-4-0 battery electric, diesel outline.
Designed by A. Probyn
Introduced 2003 in production 2007
The American version of Ruston was also updated with the new chassis and motors.
So far one Plymouth converted from Chinese Ruston, 4 ¾” gauge , Ruston cab and exhaust, sand dome and Plymouth radiator.

CLASS 66  5” gauge battery electric, main line diesel outline.
Designed by A. Probyn
Introduced 2004 in production 2007
Three axle bogies are fitted to this engine, the body is all steel construction with resin molded detailing. Fitted with four or six motors, also produced in German livery.

CHALONER  5” gauge 0-4-0 vertical boiler steam engine.
Designed by A. Probyn
Introduced 2005 in production 2007
Based on an 1877 De Winton prototype this engine is available with gas or coal fired boiler. Water tube boiler tried on prototype conventional vertical boiler used on production locos. Gas boilers produced by Maxitrak first batch.

BURRELL 1” scale steam traction engine
Modified by C. Cheng
Introduced 2006 in production 2007
A Chinese version of the standard Burrell design, high pressure boiler (100psi) opening smokebox door, cylinder drains. Gas fired only. Identified by filler parts steam pipes etc in the cab. Road and Showmans conversions offered by Maxitrak.

SENTINEL LORRY  4.5” scale.
Designed by A. Probyn and K. Delaforce.
Introduced 2006 in production 2007
A large sit in Sentinel lorry built as standard as a tractor unit, gas or coal fired.

ALICE CLASS    5” gauge 0-4-0 saddle tank
Designed by A. Probyn
Introduced 2007
The Hunslet quarry open cab saddle tank engine.

RUSTON 2   7 ¼” to 7 ½” gauge convertible 0-4-0 battery electric.
Designed by A. Probyn
Introduced 2007
A big version of the 5” Ruston design, all steel body and chassis, four motors on two axles, gear drive.  Also in Plymouth 2 version.

Maxitrak numbering system
The age of an engine can be identified roughly by its number when you know how the number series run. The number is the one on the makers plate only, any cab side numbers are random, as prototype or to customers order and bear no relationship to the works number.

Electric locos from 1978
Started at 100 and continued up to 850 odd when discontinued in 2000.
This series includes all non steam engines except Invicta. (prototype Simplicity given 99)

Steam locos from 1980
Started at 001 and reached 099 in 1986. This series then clashed with the electric series and was discontinued.

Steam locos from 1986
Started at 1000 and continued up to 1250 odd when discontinued in 2000

Burrell and Atkinson from 1994
No makers plates fitted to these engines, Burrell had its own number series starting at 1 stamped on the hornplate under the axle. From 2000 these engines were given numbers in the standard system.

All locomotives from 2000
Started at 2000 and continued to date, includes all locomotives of any type.