Holiday is named after the first model released for sale that uses this chassis:
– Holiday Buggy, model number 58023 put on sale in 1980 and available on the market until 1984
– The Sand Rover, model number 58024 put on sale in 1981 and available on the market until 1984
This chassis represents Tamiya’s calling card for enthusiasts approaching the world of radio-controlled off-road cars. It is the least expensive of the available models; if we assume that the cost of the Holiday chassis is 100, the cost of the other chassis in ascending order is as follows:
– 112 for the ORV chassis of the Subaru Brat model number 58038,
– 151 for the Quattro chassis of the Audi Quattro model number 58036, and
– 194 for the SRB chassis of the Sand Scorcher model number 58016.
The successor to the Holiday chassis is the Grasshopper chassis, in this case Tamiya has done a great job in reducing the cost to 75 while improving the technical solution and performance.
These two models represent a very important novelty for Tamiya, and there are several advertisements that Tamiya or the various importers around the world have published in trade magazines; in the image below are some examples of advertisements concerning all models equipped with the Holiday chassis.
The main features of this chassis are:
– front bumper in common with the SRB chassis; code number SP-1135,
– independent spring-loaded front suspension,
– plastic chassis shell to which the front bumper, front suspension and open gear drive system are attached – rear suspension. This is the first time that Tamiya has released for sale a model equipped with a plastic shell chassis, this type of solution is then developed over time and still used today (2023). The open gear system facilitates maintenance, but the gears are exposed to dust and dirt. To close the gearbox with a cover, 3D-printed or transparent Lexan solutions are available on the market,
The Lexan cover can also be found in the catalogue of T.M.S., the supplier of accessories at the time: gear cover with RS-540 or RS-380 motor and gear cover and chassis pan with RS-540 or RS-380 motor.
– rear-wheel drive with independent rear suspension system with torsion bar made of FRP acronym ‘Fiber Reinforced Polymers’ (highlighted in red in the picture),
– screw the front bumper and side wings to the metal chassis,
– assemble the electronics carrier plate with the two servo carrier plates,
– screw the chassis and mechanical speed control to the electronic carrier plate and
– install the rear bumper.
To improve the performance of the rear suspension system it is possible to install two oil dampers, accessory number SP-1118 ‘Racing buggy damper set’. The pictures below show the aluminium T machined from two millimetre thick aluminium foil. The T serves as a support for the two shock absorbers and is machined to fit into the rear of the gearbox. The left and right shock absorbers (highlighted in red in the centre image) are bolted to this rear tower and suspension arms,
– RS380S electric motor available as spare set part number SP-0005,
– no differential,
– rear wire bumper as on F1 and F1CS chassis (highlighted in blue in the picture)
The main differences between the Holiday Buggy and the Sand Rover are:
– the body of the Holiday Buggy is made of blue coloured styrene, it takes the shape of a typical two-wheel drive sand car; to complete it, simply add stickers. The body of the Sand Rover is made of white styrene to be coloured in, it is based on the real Volkswagen model of the dune buggy. The picture shows the differences between the two models with Holiday Buggy on the left and Sand Rover on the right,
– the driver is very similar between the two models: they only share the head with the hat,
– the attachment system of the body to the chassis. At the front, the body is attached with a tongue that clips into the chassis (highlighted frame slot in red in the picture) and at the rear there are two clips that attach to two towers. The rear towers on the Holiday Buggy (highlighted in blue in the image) are taller than the towers on the Sand Rover (highlighted in orange in the image) and
– the possibility for the Sand Rover to install the RS540 motor instead of the RS380S. They change the gear ratio from 3 gears for RS380S (left in the picture) to 2 gears for RS540 (right in the picture) and the L-shaped metal plate to fix the metal motor (highlighted in blue for RS380S and in orange for RS540 in the picture)
From 2010 to the present day (2023) the Holiday Buggy body has been used in several re-releases with different chassis:
– Holiday Buggy released in 2010 model number 58470 based on DT-02 chassis retaining the two rear drive wheels and blue styrene body,
– Holiday Buggy released in 2010 as “Red version” model number 84212 based on DT-02 chassis retaining the two rear drive wheels and red styrene body,
There are small differences in the body (on the left the original model, centre and right the re-release); in the re-release the tab to fit the body into the chassis (highlighted in green in the left image) disappears and the hole for the clip tower (highlighted in red in the centre image) with the two slots housing the front suspension columns (highlighted in brown in the centre image) is bought.
From 2011 until today (2023), the Sand Rover body has been used in several re-releases with different chassis:
– Sand Rover released in 2011 model number 58500 based on chassis DT-02 retaining the two rear drive wheels,
– Street Rover released in 2012 model number 58522 based on chassis DT-02 retaining the two rear drive wheels with street wheels.
There are small differences in the body (left the original model, centre and right the re-release); In the re-release, the tab to fit the body into the chassis disappears (although the two towers for the screws to lock the tab to the body are present in the re-release body) and the hole for the clip holder tower (highlighted in red in the centre image), the two front slots that house the front suspension columns (highlighted in brown in the centre image) and the hole in the rear part of the cockpit that houses the rear suspension support (highlighted in purple in the centre image) are made.
Re-release bodies can be modified to fit the original models by closing the slots using 2 mm thick ABS sheets and Acetone+ABS solution to fix them to the body itself.