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52F Models

Speialising in producing etched 4mm scale loco kits for NER and NBR modellers as well as the Easi-Rider range of 4mm scale model loco and tender chassis'. Designed and Produced in the UK for the discerning modeller.

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NER T2, LNER/BR Class Q6 MK2 chassis kit available in both EM/P4 and OO gauges. Price £58.50.00 including 2nd Class P&P, This applies to UK Mainland only.  Overseas carriage will be charged at cost. 
Photo © Peter Stanger, all rights reserved.  This is the one that started me off designing and producing self-levelling chassis' for kit built 4mm scale model steam outline locomotives. This is a photo of one of our customer's Alexander Q6's fitted with the Easi-Rider loco and tender chassis.  This loco was load tested hauling a load equivalent to 60, 21T hoppers on a large OO gauge layout.  The model has the post 1917 build NER 4,125g tender.  There are photo's of Q6 loco's coupled to at least 5 versions of the NER 3,940g and 4,125g tenders.
We can supply Gibson loco driving wheels and crankpin sets for all our loco chassis kits. See "Gibson Wheels" tab for prices.  If ordered with one of our chassis, the wheels and crankpins are post free.  If ordered seperately please add £2.00 to cover P&P. Currently Gibson wheel sets are available for loco and tender at £37.00 per set.
How to order.  Go to the "Contact US" page and order by email or by telephone on 01670 362451. If you're ordering by mail, including a contact number and email address would be beneficial in the event of a query about your order.
Cheques should be drawn on a UK bank and made payable to "52F Models".
This was the first chassis kit designed and manufactured by 52F models.  It transforms the running and looks of any rigid chassis Q6 model in OO, EM scales. Although not originally intended for P4 modellers, there have been ten chassis that we know of built to P4 standards.
One of our chassis under a Dave Alexander body was tested on Roy Jackson's "Retford" EM gauge layout with a load of 68, wagons and performed faultlessly.  Roy Jackson was at the Glasgow Show in February 2009 and he had the DVD of the Q6 running on his nationally acclaimed layout.

The image clearly shows the new etched cylinders with new slidebars and crossheads, the new motion bracket, new centre frame stretcher and new rear footplate suports. The new frame stretchers incorporate the brake hanger pivots. The brake gear is assembled as a seperate unit and is removable should this prove to be necessary.  The only soldered parts are the front and rear frame spacers, the motion bracket wrapper, the rear footplate supports, the cylinder slidebars and front and rear cylinder covers. The captive nuts on the inside of the compensation beams are soldered in place.  The whole chassis can be built unpainted, tried out and then completely stripped down for painting. 


The chassis was designed to be a direct replacement for the Alexander Models class Q6 locomotive with a minimum amount of alteration below the footplate.  The chassis can be made to fit the older and less accurate Nu-Cast Q6 with only minor alterations to the rear frame extensions and the rear brake pull rod. 

Photo © Peter Stanger.

Above is the Easi-Rider Q6 Loco and Tender chassis in EM gauge. The photo shows the etched parts in 0.45mm nickel silver and all the other parts included in the kit.  The crossheads are pre machined and drilled and tapped 14BA. The piston rod tubes are pre drilled Ø1.2mm to accomodate the piston rods.  The 2-stage reduction gearbox is incorporated into the rear compensation unit and comes complete with a 54:1 gear set and a 2mm bore brass worm.  Intermediate gear shaft and spacer are pre machined to optomise the position of the intermediate gear relative to the worm.  Also included are loco and tender axle bushes and a pre machined pivot tube for the tender compensation arms.


The kit is designed for ease of assembly and a minimum amount of soldering.  The assembly instructions contain a parts list, 2 diagrams and 9 pages detailed instructions.  This kit is available in EM and OO gauge versions.


  Easi-Rider Q6 Mk 2Chassis Specification Sheet.

Instructions.  The kit comes complete with 8, A4 pages of CAD assembly drawings, 4, A4 sheets to complement the drawings.


Chassis   Mk2 Easi-Rider, self-levelling, designed by Peter Stanger, produced and marketed by 52F Models. This conversion incorporates a host of new features including a revised and improved Mk2 tender chassis making the new chassis compensated on all 14-wheels. The etching is in 0.45mm nickel silver.  This chassis is available in either OO or EM gauge versions.  Several customers have successfully built the chassis to to P4 standards.   No need to buy an expensive chassis assembly jig, this chassis can be folded up around a 12" steel rule and still produce perfect results.

Construction. The loco and tender chassis are folded up construction for ease of assembly and to keep soldering to a minimum. The self-levelling units work independently of each other and the rear unit incorporates the locomotive drive train.  The loco axle bushes are a light press fit into the self levelling beams/unit and can be removed to facilitate disassembly should this ever prove to be necessary.

Drive trainThe revolutionary new drive system is incorporated into the folded up rear compensation unit. The drive unit is a 54:1, 2-stage reduction gearbox and a motor mount for a vertically mounted Mashima 1420D motor. This configuration allows the gears to be in perfect mesh no matter what the self levelling unit is doing.  The intermediate gear shaft is machined to length and a machined spacer is provided to keep the intermediate gear in alignment with the motor worm.  The design and assembly method ensure a perfect result every time. 

Cylinders. The new cylinders are etched nickel silver and are designed so that the piston rod centre line lies at a prototypical inclination of 1:20 through the driving crankpin centre line.  A new redesigned, etched, 2-piece motion bracket incorporating the brake hanger to mounting, supports the rear of the slidebars. 

Slidebars. Slide bars are made from 1/32nd square nickel silver and are located in both the front and rear of the cylinders for perfect alignment and maximum rigidity.

Piston rod guide tube. These are Ø1.6mm brass tube x Ø1.2mm bore and located in both the front and rear of the cylinders.  This tube is machined to a length of 15mm and is matched to the crosshead piston rod.  If assembled correctly, no further work should be necessary.

Cylinder wrappers. These are etched in 0.45mm nickel silver and are bent around a Ø6.35mm drill shank to form them. They snap into position and need not be soldered in place.

Crossheads. The new etched crossheads were designed with P4 modellers in mind to maximise the clearance between the leading crankpin nut and the inside face if the crosshead.  These items utilise 14BA countersunk head screws and nuts to allow the connecting rods to be fitted and removed if necessary.

Coupling Rods.    New 3-piece, double thickness fabricated from nickel silver with prototypical 5’-7” – 5’-7” – 6’-0” wheel spacing. Three-piece coupling rods assist the locomotive around curves and are essential if any form of
self-levelling is to be undertaken.


Connecting Rods.  New design, more prototypical looking with double thickness for approximately half their length.  these rods are fitted to the crossheads using a 14BA screw and could be removed should this prove necessary.

Brake gear. New frame stretchers are included and incorporate the footplate support brackets along with the upper mount for the brake hangers. The loco brake gear is designed and fitted as an assembly and can be removed to make wheel fitting and removal easier.

Electrical Pickups. Provision is made for Gibson, plunger type pickups on the locomotive driving wheels only. (Not supplied) With the Easi-Rider chassis, tender pickups are unnecessary. American style of current collection can be used if preferred.

Motor/gearbox unit. Peter Stanger designed unit. The gearbox is incorporated into the rear compensation unit and has a motor mount for a Mashima 1420 flat can motor (not supplied) with custom flywheel. Gears are 54:1, 2-stage reduction with a brass worm and final drive gear. Intermediate gears are Delrin for smooth silent running.

Mk 2 Tender Sub-chassis. This is fold up construction and allows self-levelling. Wheel spacing is a prototypical    6’-4” – 6’-4”. The leading and middle axles move up and down in slots in the chassis supported by compensation beams. the rear axle runs in a cradle and pivots around a pylon arrangement

Tender brake gear. New double thickness brake hangers and shoes and redesigned rigging allows a prototypical look and accomodate wheel removal without the need to un-solder the rigging.

Performance. The chassis has excellent slow running properties with a very good turn of speed.

Load hauling ability. A OO version has been tested on my own layout with 68 wagons and will negotiate Peco Streamline small radius point work (24” radius curve).


Easi-Rider self levelling Loco and tender chassis with a Mashima 1420 motor (not supplied) in place.  It can be seen that there is room inside the firebox for a custom made flywheel to be fitted to the motor should this prove to be necessary.


Photo © Peter Stanger, all rights reserved.  The above image shows an almost finished Q6 fitted with our new lamp Irons. See Accessories tab for details.


Photo © Peter Stanger, all rights reserved.  The rear 3/4 view of the same loco shows the new lamp irons to good effect.  The top iron has five bends in it to achieve a realistic appearence.