Slot car roller test stand

Abstract

Slot car roller test stand, characterized in that a measurement of the wheel circumferential speed of rear-driven slot cars can be carried out via a digital speedometer / rotational speedometer with magnetic sensor and a speed value in km / h can be output.

Description

[0001] The “slot car roller test bench” according to Fig. 1-4 is a functional and measuring test stand for electrically powered, slot-guided model vehicles of different sizes and from various slot car manufacturers, so-called "slot cars" as in Fig. 2+ Fig. 3 (13) shows how to record and measure the circumferential speed of the driven rear wheels with a digital speedometer. Additionally, it is possible to check the power consumption and applied voltage of the driving electric motor with an integrated measuring device.

[0002] The model vehicles are inserted into the designated slot using the so-called guide keel and secured with the adjustable guide keel stop. Fig. 1+ Fig. 3 (7) positioned on the test stand so that the slot car rear wheels are on the roller Fig. 1 (9) can be driven. By means of a connection via the terminal sockets Fig. 1 (2) connected laboratory power supply and further via the sliding contacts for the traction current Fig. 1 (3) Both analog-operated slot cars and digital slot cars operated in analog mode may be used for testing.

[0003] The current state of the art involves measuring speed over a test track with timing, or measuring the rotational speed in revolutions per minute of the driven axle using a laser tachometer. Both methods are complex, and the latter does not provide a usable speed value because wheel circumference or diameter is not taken into account.

[0004] The invention of the described “slot car roller test stand” according to Fig. 1-4 is the measurement of the wheel circumference speed of the driven wheels, and output of a speed value in km / h, to a commercially available bicycle or motorcycle computer. Fig. 3 (12) with magnetic sensor Fig. 3 (11). A magnet Fig. 3 (10), which is integrated into a ball-bearing roller, sends pulses to the magnetic sensor of the digital tachometer when rotating, and the measured speed value can be read on the tachometer. Using the preset options for the roller / wheel circumference, the digital tachometer can display a fictitious measurement, approximating the scale and model type, or, depending on the tachometer's settings, the actual speed. However, manufacturers usually do not support small wheel / roller diameters; therefore, it is recommended to adjust the preset for the respective model scale.

[0005] With a volt-ammeter integrated into the test bench Fig. 2 (6) The applied motor voltage and current consumption can be read from the display. The toggle switch on the front panel... Fig. 1 (4) The polarity can be switched from left minus / right plus for analog slot cars to left plus / right minus for digital slot cars operating in analog mode (e.g., Carrera Digital 124). Another interrupt switch Fig. 1 (5) interrupts the power supply when activated, for example to recode slot cars with built-in digital decoders for operation in analog mode; this works, for example, with a Carrera digital decoder if the power supply is briefly interrupted 3 times. The adjustable guide stop Fig. 1+ Fig. 3 (7) and the attachable height support plate Fig. 1+ Fig. 3 (8) are used for the individual placement and adjustment of the slot car on the slot car roller test stand. Reference symbol list: 1 Slot car roller test stand (basic element) 2 power sockets for standard laboratory power supply 3 sliding contacts for the drive current of the slot car 4 toggle switches for on / off and current reversal 5 interrupt buttons for coding or activating the analog mode of the digital decoders 6 digital volt-ammeter 7 adjustable guide keel stop 8 clip-on height shims of varying thicknesses 9 rubberized rollers with 10 integrated magnets 11 Magnetic sensor for digital tachometer / speedometer 12 digital tachometer / speedometer 13 Example model for a slot car or slot-guided model vehicle

Claims

[1] Slot car roller test stand, characterized by , that a measurement of the wheel circumferential speed of rear-wheel-drive slot cars can be carried out using a digital speedometer / rotational speedometer with magnetic sensor and a speed value in km / h can be output. [2] Slot car roller test stand according to claim 1 characterized by , that different slot cars in scale 1:32 to 1:24 with different polarities, + / - (for digital) or - / + (for analog), can be used by means of a switch, the additional interrupt button is used to code or activate the analog mode for slot cars with digital decoders such as Carrera Digital 124. [3] Slot car roller test stand according to claim 1 and 2 characterized by , that the applied voltage and current consumption of the driven electric motor can be read using a voltmeter / ammeter integrated into the test bench.

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