Most of the Service Spares and Accessories were available bagged. These were supplied in clear polythene bags with a printed card header that was folded over and a staple inserted to hold them together, which also prevented the contents from coming out of the bag. Some of the later card labels had a central punched hole near the top to enable the complete bags to be displayed on racking in shops. The labels were colour-coded in Pale Green, Pale Yellow, Cream or Pink and they all featured Black printing.
The majority of these labels included a standard front which featured the standard illustration of the Cooper, with the two exceptions being the labels for the K1-Pit Stand Kit (which featured an illustration of the assembled kit on the front and assembly instructions on the rear) and also the K2-Figures (which featured a line illustration of some of the various figures included on the front and a description on the rear). The labels of these two were also different being the only two produced with a Yellow card. There were two more exceptions, firstly there was the one for the A6-Flag Sheets and secondly there was latterly a combination one for the Transfers (including A5-Decorative and G4-Numerals) after the change from the original Pink header. These were the only standard labels (as yet known) to be printed on the Cream card, as opposed to the standard Pale Green or Pink. The standard rears featured optional tick boxes to indicate what the bag actually contained and later versions even included the various prices of the Service Spares and Accessories.
Pink labels were used for the Accessories: A1, A2, A3, G4, T30* (see relevant notes below), T31, T32 & T33. Pale Green labels were used for the Service Spares: AS1, E2, G14/A, G32/33, TT10, T34, T35, XG4, XG6 & XG8. An anomaly has been seen of a few Pale Green A1-Fence Post labels and perhaps others exist since the list on the rear of the header included a number of other Accessories. The Cream labels were seen on A6 & A5/G4 and the Yellow labels on K1 & K2.
Although the Banking Supports (T31, T32 & T33) were available bagged separately, a number of them were also initially available bagged together within the T30-Bridge Support Set. Very quickly this set appeared in it’s final boxed form where they were included in some of the boxed Sets and also in the Extension Packs.
The following list of itemised Accessories and Spares has been assembled in alpha-numeric order for ease of reference.
These White polystyrene posts were supplied in bags of eighteen and were designed to be slotted onto the edge of the Track. This did mean that when fitting the Track onto a flat baseboard the track did not sit flat onto the surface of the baseboard. The uprights included a vertical slot running through them with a larger round hole at either end. The slot was intended to accommodate the Barrier Fence whilst the two round holes could hold a pair of Rail Fence sections as an alternative. These first appeared in the February 1961 Price List.
This was supplied bagged with two sections of Barrier Fence coiled together, each 4’-6” (54”) in length. These lengths of flat White polystyrene had Red & Yellow printing to one surface, which represented advertising hoardings. These featured advertisements for (reading from left to right): ‘Lucas’ in Red, ‘Dunlop’ in Red & Yellow, ‘BP Super’ in Red, ‘K.L.G’ in Red & Yellow, then repeats of ‘Lucas’ in Red, ‘Dunlop’ in Red & Yellow, ‘BP Super’ in Red, ‘K.L.G’ in Red & Yellow and finally ‘Wrenn 152’ in Red. These certainly added some colour to the layouts and they first appeared in the February 1961 Price List.
This type of fencing was an alternative to the Barrier Fence. It was supplied bagged with two of the sections coiled together totalling 12’-0” (144”) in length. These round White polystyrene sections could be inserted into the top and the bottom holes in the Fencing Posts enabling a parallel run of continuous fencing. These first appeared in the February 1961 Price List, along with the other fencing items, but these were the first items of fencing to be removed from the Price Lists prior to March 1965.
This packet contained four separate transfer sheets, two were printed in Black & White and two in colour. The coloured sheets were printed in six colours, Red, Yellow, Green, Blue, Black & White. These were available from Autumn 1962.
This packet contained four individual colour printed paper sheets having gummed backs with Red, Yellow, Green, Blue or Black printed double-sided flags. They first appeared in the July 1962 Price List and the first three below were to be used in conjunction with the polystyrene T35-Flag Poles, the shortened ones for the Grandstand and those for the Trackside Pit building.
This small booklet, 5¾” x 3¾”, was printed by Glenview Press Ltd., London SE13 and was included within each of the Sets. They were also available separately and advertised on the inside cover of the Catalogue. The 1st Edition was produced to coincide with the introduction of the No 1 Basic Set in September 1960 and contained thirty two pages plus the card covers, although the last two pages were left blank for the owner’s ‘Notes’. The covers were printed in Yellow, Green and Black on the outside with the inner faces being left blank. All of the internal pages were printed in Black on a glossy White paper. The main chapters included all of the information to enable the assembly of the Set and were titled: Introduction, Assembly Instructions, Maintenance and Suggestions for Rules & Racing.
There were later versions produced and the first of these included the addition of a Red printed gummed label stuck to the inner face of the front cover, which should probably be called a ‘1st Edition Plus’. This was a temporary measure, informing buyers of updates to the original information concerning the Collectors on page 17 and an Oiling Guide from page 19. This became permanent in the 2nd Edition with this information appearing in Red printing to the inner front cover and also included the Guarantee and Car Reconditioning Service, on the inner rear cover also in Red, which had been displaced from the previous Edition. This had been caused by the addition of the track plans, with Circuits A-G, on the latter pages of this Edition.
The 10m/11/01 3rd Edition was printed during 1961 with the 20m/5/62 4th Edition arriving midway through 1962, with the designated code numbers dating them.
The final version seen is actually a variation on the 4th Edition. This just has the addition of a separate single-sided printed page showing the new flexible Collectors which has been simply stapled over the ‘old’ set-up for the rigid XG6 Collectors on page 16 of the Manual. The information and drawings contained on the sheet are the same that were included on the Green information leaflet that was included in the XG8-Collector Conversion Set. This would date this version at some time around August 1963, when these new Collectors were launched and probably should be called the ‘4th Edition Plus’.
There were six figures in this set which included two standing spectators, three seated Spectators and a standing Driver figure. These White nylon 1/52 scale figures included an individual base, where appropriate and were pre-painted using a palette of nine colours, Red, Yellow, Green, Blue, Orange, Grey, Dark Brown, Black and a ‘Flesh’ colour. Various colour combinations have been seen for the same figures with the only common colours being the Dark Brown bases and Flesh hands, legs (where appropriate) & faces. They were supplied in a standard small carton, specifically for the figures, which had a cut-out window area to the front which was backed-up with a piece of clear cellophane in order to view the contents. The carton was printed in Green & Black with both possible types of contents itemised on one end flap. There was an inner White card featuring a Green half-tone printed illustration with a cut-out section to hold each of the figures in place. These were available from November 1962.
There were six figures in this set which included the standing Track Marshall with a small flagpole being held aloft, the standing Track Marshall with a small flagpole being waved, the standing figure pointing, the kneeling Pit Crew figure (who’s hands were moulded to accept a Wheel and Tyre), the standing Driver figure and a second Track Marshall. This latter figure had the small flagpole removed which would have been being waved. Each of these White nylon 1/52 scale figures included an individual base and were pre-painted using a palette of nine colours, Red, Yellow, Green, Blue, Orange, Grey, Dark Brown, Black and a ‘Flesh’ colour. Various colour combinations have been seen for the same figures with the only common colours being the Brown bases and the Flesh hands & faces. They were supplied in a standard small carton, specifically for the figures, which had a cut-out window area to the front which was backed-up with a piece of clear cellophane in order to view the contents. The carton was printed in Green & Black with both possible types of contents itemised on one end flap. There was an inner White card featuring a Green half-tone printed illustration with a cut-out section to hold each of the figures in place. These were available from November 1962.
With the introduction of the DC-motored Cars a corresponding new Instruction Manual was produced, this time slightly larger than the original Vibrator versions but with only fourteen pages plus card covers. The 1st Edition of this DC manual was printed mid-way through 1964, included a code number 7m/6/64 and was overall slightly larger at 7” x 4⅛” than the previous one for the Vibrator motor version. In order to highlight the difference, this version’s cover was printed in Turquoise, Red & Black. Although featuring less pages than it’s predecessor, it did include more sections: Introduction, Assembling The Circuit, Wiring Diagram, Operating Instructions, Driving Hints, Collector Setting, Maintenance, Fault Finding, General Points & Car Operation. A later version of the DC Manual has been seen, with the code number 7m/11/64 but this additionally states that this one is also a 1st Edition. However this version is exactly the same as the previous version apart from featuring the different code number and later versions of the DC Manual haven’t been seen.
** ‘GRAND PRIX’ Manual – The Manual for the 9-Volt Grand Prix set was printed double-sided on a single piece of White paper in Black ink, it was 6¼” x 7¼” overall when folded and it included a code number GP/10/67 on the rear. It contained the following sections – Introduction, Assembling The Circuit, Wiring Diagram, Connections To Batteries & Circuit, Operating Instructions, Starting Cars, Driving Technique, Set Contents, Maintenance of Your Set, Cleaning Track, Cleaning Collectors, Setting Collectors, Replacement Of Collectors, Meshing Of Gears, Oiling, General Points, Extra Power Rails & A Service Scheme plus seven line drawings to explain certain details.
These bagged spares were for the Vibrator-motored Cars and also included some components that individuals may have misplaced from the Terminal Straight, as items were dismantled and re-assembled. These spares included a Guide Pin, Armature Pivot Pin, Speed Control Lever, Contact Fixing Screw, two Armature Return Springs and two Collector Fixing Screws for the Cars. There were also three steel wire terminals in different sizes, the largest was for the Terminal Return Lead, there was one for the wire for the Contacts and also the TV Suppressor Lead. Finally there were two plated knurled nuts for the Terminal Straight track included. There were two versions of this Assorted Spares pack assembled with the later one including the last version of the Speed Control Lever (the one featuring the integral pressed spigot) and also two of the accompanying, later Mk2 (short) Armature Return Springs. The AS1- Assorted Spares Pack first appeared in the July 1962 Price List.
This code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have been only used internally for spares allocation and was probably only used for the first Green Chassis. A Green Cooper Chassis has been discovered, packed singly in a polythene bag, It includes the White metal exhaust and a Speed Lever with it’s accompanying Screw. See article in Newsletter No16 for details.
Car Controllers were available initially within the Sets and then later individually. The first Controllers were intended for the Vibrator-motored Cars and were therefore simply an on/off button with a separate sliding button which provided the facility of locking the Controller in the ‘on’ position. When this was used in conjunction with the Speed Lever beneath the Car, it enabled single racers to have a race against this pre-set car or for young children to become accustomed to racing the Cars with a limited top speed. The Controllers comprised a 2-piece Black polystyrene body which was screwed together, a Red on/off button and a Red sliding button. The bottom section of the Controller was flat, featuring bevelled sides and each Controller was supplied with two flat Black polystyrene securing strips. These also featured bevelled edges to mate with the Controller base and each of them had a small pair of countersunk holes. These strips were supplied with four small countersunk screws, wrapped in tissue paper. When these strips were fitted correctly to a board they enabled a Controller to be slid between these sections and retained. The Controllers were supplied with two Red PVC coated wires each with Yellow rubber sleeves and steel Terminal ends. The cartons for the Controllers were specific to the item, they were printed in Red & Black and were the same size as the ones supplied with the cars. They also contained a Pale Green printed instruction sheet for their use and how they could be installed onto a permanent baseboard. This enabled them to be used between the strips or just have them retained temporarily when not in use.
With the introduction of the DC-motored Cars the Controllers were upgraded and were now termed Mk 2 (as clearly stated on the base of the Controller) and the on/off button was now replaced with a similar, but much longer button. This activated a slider over a short resistance coil enabling the Cars to have progressive speed control and underneath the Controller there was also a top speed Restrictor Screw. These later Mk 2 versions are easily distinguished from the earlier AC versions by having a longer main button and also a deeper bottom section. This section did not feature the bevelled sides of the earlier version and this removed the possibility of securing the Controller to a baseboard.
These were supplied bagged separately and consisted of a single piece of Grey polystyrene. Over the years of production various shades of Grey have been seen. This item featured the words ‘WRENN FORMULA “152” COLLECTOR CLEANING GAUGE’ in raised letters on the underside, a locating slot for the Car’s Guide Pin and four recesses to locate the Collectors on the bottom of the cars. Initially this allowed the copper Collector brushes to be cleaned easily and also aligned correctly in either of their two positions. With the introduction of the second flexible (spring) version of the Collectors, the only use of the Cleaning Gauge was as it’s primary function since the new Collectors were now self-aligning.
This pair of wire Return Leads had a Black PVC coating, they had steel Terminal ends and Yellow rubber sleeves. These provided the return wire from the Power Unit to the Terminal Track. Two were included in each Set and they were also available separately as a pair.
This code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for spares allocations and was probably only used for the first Red Chassis.
This pack contained three sheets of waterslide transfers featuring Black numerals on White roundels. These were for use on the Cars and also the polystyrene racing car number boards which were included with the Lap Counter and also the Trackside Pit building. Each sheet contained four sets of each of the numbers ‘1 – 10’ and these were first featured in the July 1962 Price List. A later variant of this sheet has been seen with the numbers ‘1 – 9’ as Black numerals on White roundels and a set of four White number ‘9’ numerals in place of the normal number ‘10’ numeral roundels but no information is available to determine when this was produced.
This flat, plated steel Lever was used under the Vibrator motor to restrict the travel of the Armature therefore restricting the Car’s speed. The Instruction Manual stated that the Speed Control Lever could either allow higher maximum speeds with slower acceleration for large circuits, or faster acceleration with a lower maximum speed for small, tight circuits. It’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for spares allocations, although one was included within the AS1–Assorted Spares Pack. Four different Speed Control Levers were ultimately produced, see articles in Newsletters No18 and No23 for details of all of the variants.
This short brass, dome-headed slotted screw was used to hold the Speed Control Lever in the Chassis. Its code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for spares allocations.
This was the pivoting steel plate which activated the Pawl in the Vibrator motor. It’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for spares allocations.
One of these Clear nylon rods was used to provide the pivot for the Armature through the Chassis. It’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for spares allocations and one was included within the AS1–Assorted Spares Pack.
This spring was fitted inside the Vibrator-motored Car’s Chassis and returned the armature after being activated. It’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for spares allocations although two were included within the AS1–Assorted Spares Pack. Two different versions of this component were developed, see article in Newsletter No18 for details.
This pack contained two sets of the Black nylon Pawl and Pivot Pin. The Pawl also featured a Clear nylon filament to retain it in position. The first Pawls produced were curved and the later version was flat with the changeover happening during 1961, soon after the introduction of the Yellow Ferrari and Blue Cooper. A small number of these Pawl and Pivot Pins have been seen manufactured from Clear nylon. See articles in Newsletters No8 and No17 for details.
This Black nylon Pawl Pivot Pin secured the Pawl to the top of the Armature and a small number of these have been seen manufactured from Clear nylon. It’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for spares allocations. Two were included in the G14/A – Pawl Assembly pack.
This Black nylon toothed Ratchet Wheel fitted on to the Rear Axle of the Vibrator-motored Cars and was activated by the Pawl. A small number of these have been seen manufactured from Clear nylon. It’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for spares allocations and possibly included on the G30 – Rear Axle.
The Black nylon Contact Block was fitted to the Chassis of the Vibrator-motored Cars and supported the Bottom Contact Blade. A small number of these have been seen manufactured from Clear nylon. It’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for Spares allocations.
This Black nylon block separated the two phosphor bronze Top & Bottom Contact Blades in the Vibrator motor. A small number of these have been seen manufactured from Clear nylon. It’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for Spares allocations.
Two of these long brass dome head slotted screws held the Contacts, Contact Block and Distance Piece together in the Chassis. The code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for Spares allocations however one was available within the AS1 – Assorted Spares Pack.
This phosphor bronze Contact Blade had a silver contact, it’s code was allocated by Wrenn and referenced in the early editions of the Manual. It was never quoted on the Price List so may have only been used internally for Spares allocations and two were available within the XG4 – Contacts pack.
This phosphor bronze Contact Blade had a silver contact, it’s code was allocated by Wrenn and referenced in the early editions of the Manual. It was never quoted on the Price List so may have only been used internally for Spares allocations and two were available within the XG4 – Contacts pack.
This axle was a polished stainless steel rod and it’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List individually so may have only been used internally for Spares allocations.
This axle was a polished stainless steel rod but included a number of raised sections in the centre to retain the Ratchet Wheel and stop it from revolving easily on the axle. The code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List individually so may have only been used internally for Spares allocations.
This white metal ‘spoked’ Wheel was used on both the Front and Rear Axles of all Cars. It’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for Spares allocations. Four of them were available within the G31/A – Wheels & Exhaust pack.
This pack contained the following cast white metal components, four Wheels, a left hand and right hand pair of Exhausts for the Ferrari and an Exhaust for the Cooper. It was advertised within the very first Price List only and then deleted for all of the subsequent ones.
This code was allocated by Wrenn and referenced in the early editions of the Manual and but never quoted separately on the Price List so may have only been used internally for Spares allocations since they were available within the G32/33 – Tyres pack. *See full description of Tyres below.
This bagged pack contained four rubber Front Tyres and four Rear Tyres. The early packs contained ribbed Tyres with each having a number of raised ridges running across the width of each of the Tyres. Later, more realistic, versions appeared in November 1962. These had treads moulded into the surface of the Tyres, raised lettering ‘Wrenn 152’ featured on both the inner and outer faces of the front Tyres whilst recessed lettering ‘Wrenn 152’ was on the outer face of the rear Tyres. There has also been seen a reference to ‘soft’ Tyres being available with the polythene bag having a small Pink card included stating ‘NEW! 1/3 soft racing tyres’.
This code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted separately on the Price List so may have only been used internally for Spares allocations since they were available within the G32/33 – Tyres pack. *See full description of Tyres above.
This is an anomaly with a duplicated code number for the Windscreen in the US market. This was only allocated by Wrenn and referenced in the early US Trade Price Lists so may have only been used internally for Spares.
This code was allocated by Wrenn and was only referenced in the US versions of the US Trade Price Lists. It does not reference any particular car type.
This code was allocated by Wrenn and was only referenced in the US versions of the US Trade Price Lists. It does not reference exhaust pipes for any particular car type.
These Black nylon Pins were fitted to the underside of each Car and were available in bags of twelve. They were cylindrical with a raised collar to ensure that the pin fitted into the Chassis of the Car at the correct height. One was also included within the AS1–Assorted Spares Pack.
These short brass dome headed slotted screws initially secured the Collectors to the Chassis and then latterly the steel terminal plates of the spring-type Collectors. Their code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for Spares allocations. Two were available within the AS1–Assorted Spares Pack.
Bottles of lubricating oil were available either supplied in each Set or separately. The small square glass bottles had a cork stopper with a thin stainless steel rod inserted to apply the oil. The bottle had a plastic seal which was originally White while later ones were Red. The gummed paper label around the bottle was Yellow with Black printing featuring ‘Wrenn 152’ to the front panel, Green ‘BP Energol’ shield and lettering to each side panel and a blank Yellow back.
This code was allocated by Wrenn and was only referenced in the US versions of their Trade Price Lists. There is no further information about this, so it unfortunately an unknown product.
This pack contained the various Green polystyrene components to assemble a simple frame to be fitted to the roof of the Trackside Pit building enabling it to be used as a standing area for the Spectators. It contained vertical posts, horizontal railing and also a stairway structure to provide access from the ground level. The completed kit could then be fitted to the roof by opening out the half-depth ‘blind’ holes in the underside of the Trackside Pit building roof. This was available from November 1962.
This pack contained the ten different White nylon unpainted 1/52 scale figures. These were also available separately within the boxed A11-Spectators & A12-Track Personnel accessories, but these were in a painted form. They were first featured in the August 1963 Price List. For a description of the individual figures see above in the A11 & A12 sections.
The DC motors were supplied singly in standard polythene bags with a couple of staples to retain the contents. Two of these have been seen, from Belgium, with a Rear Axle along with the contrate included, completing the packet.
These steel pins were bagged in a large quantity and were used to secure items of Track and Track Supports permanently to baseboards. All of these items featured pre-drilled holes for this purpose, the Track sections had holes within the guide slots and each of the Track Supports had four holes around the small plinth on their bases. These were originally available in Wrenn’s TT range of Model Railway accessories, retaining the same code number, but they first featured in Wrenn’s Formula 152 August 1961 Price List.
This Set was available from August 1961 and contained 2No Banking Supports, 6No High Level Supports & 4No Medium Level Supports, each as individually detailed below. It provided enough Track Supports to enable a Figure-of-Eight track configuration to be assembled. Unlike the individual types of different Track Supports, this set was available in a rectangular, printed cardboard carton with Yellow and Black printing which also included a Pale Green printed paper instruction sheet for their positional use. The size of this carton was designed so that it could be included in the relevant Sets.
These were available bagged in packs of twelve or as part of the T30–Bridge Support Set. They were manufactured from injection moulded Grey polystyrene and could be fitted to the circular projecting lugs underneath each of the Track sections or, as an alternative, to the edge of the Track. Each of them featured a small bottom plinth that included four holes which enabled the Supports to be fitted permanently to a baseboard with the aid of Track Pins. These were available from August 1961.
These were available bagged in packs of twelve or as part of the T30–Bridge Support Set. They were manufactured from injection moulded Grey polystyrene and could be fitted to the circular projecting lugs underneath each of the Track sections or, as an alternative, to the edges of the Track. Each of them also featured a small bottom plinth that included four holes which enabled the Supports to be fitted permanently to a baseboard with the aid of Track Pins. These were available from August 1961.
These were also available bagged in packs of twelve or as part of the T30–Bridge Support Set. They were manufactured from injection moulded Grey polystyrene and could be fitted to the circular projecting lugs underneath each of the Track sections or, as alternative, to the edge of the Track. Each of them also featured a small bottom plinth that included four holes which enabled the Supports to be fitted permanently to a baseboard with the aid of Track Pins. These were available from August 1961.
These were supplied in bags of twenty four. They were manufactured from White polystyrene and were intended to be fitted under the edge of the Track. The inner lug was divided into two so that the clip could be fitted spanning the joints between two adjacent Track sections, this enabled the Track to retain some rigidity and also provided an opportunity to fit the Track onto a baseboard if required. The inner hole could be used for this fixing whilst an outer hole was provided to insert a Flag Pole. These were first featured in the August 1963 Price List.
There were twenty four of these 4” tall White polystyrene Flag Poles supplied bagged for use in conjunction with the T34–Track Clips & Flag Supports and A6–Flag Sheets. These were first featured in the August 1963 Price List.
These were available bagged in pairs comprising two sets of phosphor bronze G22/A Top Contact Blades & G23/A Bottom Contact Blades for the Vibrator-motored Cars.
These were available bagged in packs of six Brushes for the DC motors, which was enough for two Cars.
NB This code number was previously allocated to the TV Suppressor & Lead required on the Vibrator-motored Cars. However this item was never available as a separate item and it’s code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so, as such, may have only been used internally for Spares allocations.
The first type of Collectors were manufactured from rigid phosphor bronze with the phosphor bronze brushes crimped into one end. These were then latterly termed ‘non-flexible’ as they were superseded with the later flexible ‘spring type’ from August 1963. At the launch of this second type of Collector, Wrenn promoted them as being Patented but at the present time this is yet to be confirmed. The code number did not change with these later types and both were available in bags of four.
This comprised a cylindrical, soft-iron core with copper windings around it and a plated steel cover with 4No tabs at the bottom. These were inserted into the Car Chassis and the tabs folded inwards to retain it. The code was allocated by Wrenn and referenced in the early editions of the Manual but never quoted on the Price List so may have only been used internally for Spares allocations. The steel outer coil cover had two variants produced and these appeared with either of two different finishes. See article in Newsletter No20 for details.
When the manufacture of Collectors changed-over from the rigid type to the flexible type, the new ‘spring type’ Collectors had to be fitted to new stainless steel terminal plates which, in turn, had to be fitted inside the Car. From August 1963 all new Cars from the factory already had these fitted as standard but existing owners wishing to upgrade to the new Collectors required this Conversion Set. They were available bagged containing enough components to convert two Cars: there were four ‘Spring type’ Collectors, four stainless steel terminal plates and a Pale Green (or Pale Blue) instruction sheet for their installation. These were first featured in the August 1963 Price List.
This hardwood timber frame kit was originally available as part of Wrenn’s range of Model Railway products. It was constructed from 13/16” x 1¼” timber sections with dowel joints ready for assembly with the screws provided. It was recommended that a hardboard, or preferably a 3/16” plywood, top should be tacked to the top of the frame to complete the baseboard, although this was not provided. It first appeared in the August 1961 Price List but by November 1962 it was then ‘only available in the U.K’. Finally it was discontinued as a Wrenn Formula 152 item by August 1963.
This hardwood timber frame kit was originally available as part of Wrenn’s range of Model Railway products. It was constructed from 13/16” x 1¼” timber sections with dowel joints ready for assembly with the screws provided. It was recommended that a hardboard, or preferably a 3/16” plywood top, should be tacked to the top to complete the baseboard, although this was not provided. It first appeared in the August 1961 Price List but by November 1962 it was then ‘only available in the U.K’. Finally it was discontinued as a Wrenn Formula 152 item by August 1963.
The sheet was manufactured from a ‘plastic foam’ material and could be painted. It was originally available as part of Wrenn’s range of Model Railway products enabling buyers to create further realism with their slot racing layouts. It was initially featured in the August 1961 Price List and was available in Green, Grey or Brown.
