1/ Injected plastic bodies.

Injected bodies can be found on electric model racing cars or as model kits designed for display purposes.

Once a body has been selected, it is important to fit it properly on the chassis. 

1/ Install an E-clip on the front axle, then slip a front wheel with mounted tire from the right side of the chassis. Push a wheel on the gear side of the rear axle and install a tire. Slip on plastic chassis.  Select the optimum chassis wheelbase by matching the 9 possible assembly combinations  to the body wheel wells. Make note of your setup and completely assemble the chassis according to the printed instructions supplied with your kit, or the detailed online instructions.

2/ Fit the body on assembled chassis. Any interference must then be removed from the body or the driver's compartment fitted to the body. A Dremel Moto-Tool with a 3/16" diameter ball grinder is perfectly suited for this job. Remove a little at a time, constantly checking for clearance. Temporarily remove the drivers compartment and any engine or gearbox details by gently lifting them from their posts with a wide thin blade such as a rounded end table knife or grinding the melted tab ends with the steel ball grinding tool. Check for side body interference such as small molded areas that would interfere with whichever type of body mount you select. The body MUST fit on TOP of the steel pan, NOT ON ITS SIDES, so as to assure a perfectly square body mounting. If the body sits too high, you may want to trim the sides evenly until the body sits where you want it to be. Make SURE that the body causes no interference and allows the steel pan to REST FLAT on the plastic chassis, and causes no BINDING of the pan and chassis, spur gear or tires. You may have to clear an area for the spur gear to turn freely. Also check front axle clearance.

3/ Once the body is fitted, either with pins or with the supplied plastic side body mounts,  fit the driver compartment and trim its base until it completely clears the steel pan and allows it to fit flat on top of the plastic chassis. Again, check front axle clearance. has provided a mounting bracket on the back of the motor box. This can be used with a 2-56 screw and nut to attach details such as engine and gearbox detail, or a wing.

4/ If the steel pan sticks past the bottom body lines, it might be necessary to trim its edges purely for aesthetics as this does not hamper any mechanical functions. Mark the trim lines with a sharp pointed object such as a sharpened piece of thin steel wire. Remove body, remove steel pan and axle from chassis and cut off the unwanted areas using a Dremel Moto-Tool with a disk or use a disk sander. Cool the disk and the steel pan in a bowl of water often. You may also use a notching tool available at Micro-Mark. Once trimmed, smooth and remove all hard edges from steel pan with a fine flat file.

Illustrated help:

Carrera BMW on TSR24 chassis      Carrera Ferrari 330P4 on TSR24 chassis    GB-Track Porsche 917 on TSR32 chassis             

Fly Porsche 917 on TSR32 chassis       Tamiya TamTech bodies

HSRR McLaren M8D on TSR32 chassis (for experts only!)

Slot.It Porsche 956 on TSR32 chassis (recommended for beginners)

2/ Vacuum formed plastic bodies.

Vacuum formed bodies are generally made of clear plastic and are painted from the inside. They can be found in specialized shops and model car racing companies. offers a line of finely detailed 1/24 and 1/32 scale bodies.

Once a body has been selected, it is important to fit it properly on the chassis. 

1/ Before completing the chassis assembly, install an E-clip on the front axle, then slip a front wheel with mounted tire from the right side of the chassis. Push a wheel on the gear side of the rear axle and install a tire. Slip on the plastic chassis.  Select the optimum chassis wheelbase by matching the 9 possible assembly combinations  to the body's wheel wells. Make note of your setup and complete the assembly of the chassis according to the printed instructions supplied with your kit, or the detailed online instructions.

2/ Install the clear or painted body over the chassis, the sides fitting over the steel pan. Line it up on the car as straight as possible and pin one side, then, making sure that there is no binding (interference with motor, spur gear, wheels...), and pin the other side. We do not recommend the use of the side plastic mounts to fit a vacuum formed body. The bodies manufactured by have pre-marked pin locations, so simply push a mounting pin through the center of the marked mounting holes and fit the body on the car. Adjust the wheelbase as described above, then trim the body to suit following the clearly-marked trimming lines.