934 and P34

This is the first family of radio-controlled cars designed by Tamiya, comprising a total of three models; important note: Tamiya first released for sale the radio-controlled tank replica of the well-known American-made M4 Sherman (model number 56001 from 1974). Only later did Tamiya also switch to radio-controlled model cars. Returning to this family of radio-controlled cars, the first two are very similar to each other while the third is decidedly different in that it is the 6-wheel Tyrrell formula 1 car. Despite this, the starting project is the same; the three models share the same design philosophy. The 934 and P34 family includes these models:

– Porsche 934 Turbo RSR model number 58001 released for sale in 1976 and available until 1980 chassis 934,
– Porsche 935 Turbo model number 58002 released for sale in 1977 and available until 1981 chassis 934,
– Tyrrell P34 6-wheeler model number 58003 released for sale in 1977 and available until 1982 chassis P34.

These are the details of the main technical characteristics common to this family:
– central frame consisting of an aluminium plate (highlighted in red) and two aluminium side wings (highlighted in blue) bolted to the frame. The wings allow installation of the body.
Spare part number 50007 “Porsche 934/935 chassis set” is the chassis complete with side wings for models 58001/58002
Spare part number 50020 “Tyrrell P34 chassis set” is the chassis complete with side wings for model 58003
– quick release system consisting of a wire with L-bent ends (highlighted in orange). Part number 50037 “Catch pin set Porsche 934-935-P34” consists of two metal wires with L-bent ends and two L-shaped metal plates to be installed on the bodywork

– wire front bumper for Porsche 934 or plastic bumper for Porsche 935 and Tyrrell P34. Spare part number 50014 “ABS front bumper” is the plastic bumper available in black or white; it is also suitable for installation on model 58001 as an accessory
– steering control servo installed between the front wheels (highlighted in blue); spare part number 50008 “Porsche 934/935 Steering set” for models 58001 / 58002 and 50021 “Tyrrell P34 Steering set” for model 58003 is the front steering system

– there is no system in the steering to save the integrity of the servomotor
– the steering linkage system allows the responsiveness of the steering radius to be adjusted according to the rotation of the servomotor. Left is the setting for less reactive and more precise steering, right is the setting for more reactive and less precise steering

The steering system also allows you to adjust the toe-in of the wheels, the best solution on these chassis is for the wheels to be perfectly parallel with the servo lever in the middle of its travel. The adjustment of the wheels front left and centre in the pictures is incorrect, the correct adjustment is in the picture on the right.

– 2 x battery holders for a total of 4 UM2 type batteries very similar in size to the “half torch” type D (code 70012 “dry battery case”, highlighted in blue) or 5-cell 6 V 1200 mA battery case (code 50013 “battery holder set”, highlighted in red)
Code 70012 contains the two-cell battery holder type R14/C/UM2 (half torch); the set consists of a switch (which is not needed for this application), a double white battery holder, metal tabs for wiring the cells, various screws and a blue fabric strap (for taking the cells out of the case). Not to be confused with other sets from Tamiya’s Educational series:
a – the more modern “Separated Battery Box + Switch” kit code 70149 which still provides for the possibility of connecting two cells but the battery box is single for R14/C/UM2 type cells (half torch),
b- The kit “Separated Battery Box + Switch” code 70150 that always provides the possibility to connect two cells but the battery holder is single for cells type R6/AA/UM3 (stylus)
c- The kit “Separated Battery Box + Switch” code 70023 that always provides the possibility to connect two cells but the battery holder is single for cells type R20/D/UM1 (torch)
d- The “Battery Box + Switch” kit code 70013 that always provides the possibility to connect two cells, but the battery holder is double for cells type R6/AA/UM3 (stylus)

– only two-wheel drive at the rear
– engine and rear axle carrier system consisting of a U-shaped metal plate corresponding to part number 50006 “Porsche 934-935 gear box set” for models 58001 / 58002 and part number 50022 “Tyrrell P34 gear box set” for model 58003

– rear axle with rear differential or fixed gear; spare part number 50009 “Rear Shaft set” is rear axle, spare part number 50011 “Differential Gear set” is main gear / satellites for the differential, spare part number 50012 “Pinion Gear Set for RS380” is pinion gear with different number of teeth for the two sides to change the gear ratio

Although the construction philosophy is the same and unique for these Tamiya models, the parts in common are only the following + the small parts
– rear axle code 50009
– rear differential code 50011
– double-sided pinion gear code 50012
– 5-cell 6 V – 1200 mA battery holder code 50013,
– quick coupling system for body code 50037 and
– rear wheel locking system code 50091

Porsche 934 Turbo RSR

Tamiya’s first radio-controlled car is a development of the static model available today (2023) with these codes:
– Porsche 934 turbo RSR code number 12056 in the cobalt green version with main sponsor Vaillant or

– Porsche 934 turbo RSR code number 12020 in orange with main sponsor Jagermeister.

If you have the 934 chassis, you can build a body for the dynamic model from the static model box from which you can also use the tyres.
Over the course of the various editions, the plastic body is available in four different colours:

– black, due to the commercial success of model 58001 and the first 100,000 models sold, Tamiya presented a special version of the Porsche 934 Turbo RSR featuring a black anodised aluminium chassis, chassis wings, steering system and rear motor box system and a black plastic body. This edition is delivered to major customers, dealers, persons of interest… it is one of the rarest models produced by Tamiya.
To date (2023) there has been only one re-release of the original black body in 2009; set number 84057 includes a GT-01 chassis, Lexan body and Styrene body that is identical to the original 1976 black version.

– cobalt green, used for the 1976 edition of the dynamic version; colour no longer available for plastic. The body of the original version is green with the only exception for the Japanese domestic market where the colour green or white was used indiscriminately. The body is completed with the accessory set of stickers code “decal C” number 50004
– orange used for the Jagermeister main sponsor special version. The body is to be completed with the accessory set of stickers code “decal B” number 50003
– white still used for the main sponsor special version Tebernum. The body can be coloured in green with main sponsor Vaillant, in orange with main sponsor Jagermeister or is to be completed with accessory set of stickers code “decal A” number 50002 with main sponsor Tebernum.

The body consists of several parts that are to be joined with glue to obtain the complete body.

The static and dynamic models share the following sets of parts:

– Parts A, the colour in the static set currently (2023) in production is white. Parts that are not used to build the body of the dynamic Porsche 934 have been deleted from the picture.
– Parts D, the colour of the windows in the version currently (2023) in production is transparent, the original dynamic model has transparent grey windows. Parts that are not used to build the body of the Porsche 934 dynamic have been deleted from the picture
– Parts S, the colour in the static set currently (2023) in production is white. The parts that are not used to build the body of the Porsche 934 dynamic have been deleted from the image.
– Parts E, the colour of the windows in the version currently (2023) in production is transparent, the original dynamic model has transparent grey windows.
– Parts T/U/Q are the same between the dynamic and static model. Parts that are not used to build the body of the Porsche 934 dynamic have been deleted from the picture.

Without starting with the static model, the accessory set number SP-1045 is available for the Porsche 934 Turbo RSR compatible with Porsche 934 Turbo RSR set number 58001 and with Porsche 935 Turbo set number 58002 (by changing tyres + rims both front and rear). In the package you can find the body in white plastic, green plastic or orange plastic so that you can choose between the original green livery with Vaillant main sponsor of model number 58001, the white livery with Tebernum main sponsor or the orange livery with Jagermeister main sponsor. All packages contained the three sets of stickers. The orange and white version never had a corresponding complete chassis model.

The following four versions of the Porsche 934 Turbo that raced on circuits in 1976-1977 can be obtained from the SP-1045 accessory set.

The main characteristics of the Porsche 934 turbo RSR chassis are:

– the motor in the package is Mabuchi RS360, which has the same diameter as the RS380, but is shorter. The RS380 motor is the factory installed motor for the Porsche 935 Turbo model 58002 and the Tyrrell P34 model 58003. It is possible to change the motor with the RS380 accessory number SP-1005 or to replace the entire rear gearbox – motor mount system with the special version to install the higher performance RS540 accessory number SP-1059.

– the mechanical double-disc speed control is only factory-installed on this model, highlighted in red

– The front steering system has no shock absorbers and the task of absorbing bumps is mainly left to the shoulder of the rubber wheels. It is available as accessory part number SP-1008
– the rear gearbox – engine mount system is equipped with a simple suspension system, the task of absorbing bumps is mainly delegated to the shoulder of the rubber wheels
– the wheel rims are in common with the Porsche 936 model number 58006 and are accessory number SP-1001

Porsche 935 turbo

Tamiya’s second radio-controlled car is a development of the static model available today (2023) as Porsche 935 turbo model number 12057 in the white version with main sponsor Martini.

If you are in possession of the 934 chassis, you can build a body for the Porsche 935 Turbo dynamic model from the static model box from which you can also use the tyres.
The body is made up of various parts that have to be joined with glue to obtain the complete body.
The static and dynamic model share the following set of parts:
– Parts A-R, the colour in the static set currently (2023) in production is white. The parts that are not used to build the body of the dynamic Porsche 935 have been deleted from the picture.
– Parts D, the colour of the windows in the version currently (2023) in production is transparent, the original dynamic model has transparent grey windows. Parts that are not used to build the body of the Porsche 935 dynamic have been deleted from the picture
– Parts E/F/T/U are the same between the dynamic and static model. The parts that are not used to build the body of the Porsche 935 dynamic have been deleted from the image.

Without starting with the static model, the accessory set number SP-1048 is available for the Porsche 935 Turbo compatible with Porsche 935 Turbo set number 58002 and Porsche 934 Turbo RSR set number 58001 (by changing tyres + rims both front and rear). In the package you will find the white plastic body and two sets of stickers to choose between the original white Martini Racing livery of model number 58002 or the orange Jagermeister livery. The orange version never had a corresponding complete chassis model.
The following two versions of the Porsche 934 Turbo that raced on the circuits in 1976 can be obtained from the SP-1048 accessory set.

The reproduction of racing cars is always important to Tamiya, the models are used for the most important pages of the Guide Books and the catalogue: front cover and second-third-fourth cover.

The main features of the Porsche 935 turbo chassis are:

– the motor in the package is Mabuchi RS380 It is possible to replace the entire rear gearbox – motor carrier system with the special version to install the higher performance RS540, accessory number SP-1059.
– the mechanical speed control is the version with improved speed regulation, accessory number SP-1054.
– the front steering system has no shock absorbers and the task of absorbing bumps is mainly left to the shoulder of the rubber wheels. It is available as accessory part number SP-1008
– the rear gearbox – motor holder system is equipped with a simple suspension system, the task of absorbing bumps is mainly delegated to the shoulder of the rubber wheels
– the wheel rims are unique for this model and are available as accessory part number SP-1046 front wheels and rims and accessory part number SP-1047 rear wheels and rims.

Tyrrell P34

The first Formula 1 car reproduced by Tamiya is the six-wheeled Tyrrell that raced in 1977 in Argentina. It is an excellent example of turning a problem into an opportunity. The idea is to differentiate itself from the other cars equipped with the Ford Cosworth motor that were inevitably aligned in performance by using the same motor. The new wheel configuration made it possible to reduce the frontal footprint as the wheels had a smaller diameter and were hidden by the front wing and the first two front wheels cleaned the road giving more grip to the second two front wheels improving driveability. In 1978 Williams, March and Lotus made six-wheel cars that never ran a race: the FIA mandates the use of four wheels in racing cars and Goodyear does not guarantee tyre development. The reproduction of this six-wheel racing car that so impressed the Japanese public is always important to Tamiya, the Tyrrell is used for the most important pages of the Guide Book and catalogue.

Different body colours are suggested for this model in addition to the official blue-white.

The main characteristics of the Tyrrell P34 6-wheel chassis are:

– the motor in the package is Mabuchi RS380 It is possible to replace the entire rear gearbox-motor carrier system with the special version to install the more powerful RS540, accessory number SP-1023.
– the mechanical speed control is the version with improved speed regulation with integrated protection fuse, accessory number SP-1010.
– the front steering system is equipped with shock absorbers. It is available as accessory part number SP-1021.
– the rear gearbox – motor mount system is not equipped with a suspension system, the task of absorbing bumps is mainly left to the shoulder of the large rubber rear wheels.
– the wheel rims are unique to this model and are available accessory number SP-1049 for the four wheel and four front rims and accessory number SP-1050 for the two wheel and two rear rims.

The Tyrrell P34 in the version that raced in Argentina is put back on sale using a special 6-wheel version of the F103 chassis:

– in 2001 to celebrate 25 years since the real car’s Formula 1 victory. The model has model number 49154,
– in 2005 the model has model number 57738 and is ready to race, therefore already assembled and complete with electronics, and
– in 2022 the model has model number 47486

There are parts available that can be used in the restoration of model 58003:

– four front rims and 2 rear rims code number 9334060; the colour of the rims has changed from the original dark grey to black. In order to be able to install the new rims on the axle of the original model, provide two 840 bearings for each wheel by replacing the two original metal cylinders (parts R3 and R2 to be replaced with two 840 bearings are highlighted in red),

– four front rubber wheels code number 9805718; the colour of the rims has changed from the original dark grey to black,
– two rear rubber wheels code number 9805717,
– blue and white central body code number 19334061,
– part E, rear wing code number 0004129
– part G, driver’s seat code number 0004131 and
– part F, rear – side cooling grilles part number 0004130.

– the stickers are different for each version, but they have many parts in common. For model number 49154 the sticker code is 19494045 and for model number 47486 the sticker code is 19494254.

There are also accessories available that fit model 58003:
– four front sponge wheel rims code number 84166
– two rear sponge wheel rims code number 84167
– four sponge wheels for front rims code number 84168
– two sponge wheels for rear rims part no. 53129

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