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Reference

Scalextric Subaru Challenge

0점 영일교육시스템 2015-12-10 추천: 추천 조회수: 1299

        

Subaru Impreza RS

Introduction

Subaru Impreza RS

The Subaru Impreza is a World Champion car with the following specifications:

  • Engine: 2.5L Horizontally opposed SOHC, 16 Valve four
  • Configuration: 4 Wheel drive
  • 0 to 60 mph: 8.3 seconds
  • Top speed: 125 mph
  • Power: 165 hp @ 5,600 rpm
  • Length: 172.2 inches
  • Width: 67.1 inches
  • Height : 55.5 inches
  • Fuel economy: 22/29 mpg (city rating)

The aim of the experiment is to measure and record the speed of the car with an ADC-11. Due to budget limitations purchasing the above Subaru Impreza RS was out of the question. The only alternative was to go for the next best thing:

Scalextric logo



Equipment required

The Subaru challenge box set was purchased, set up and tested. After a few days of testing it was decided that the technical staff should stop playing with it and actually perform a data logging experiment. The following equipment was used:

  • PC with PicoScope installed
  • ADC-11 multi channel data logger
  • ADC-11 Terminal block
  • Scalextric Subaru Challenge
  • EL031 Light sensor
  • High intensity LED
  • Magnifying glass
  • 100 k resistor
  • 1 k resistor





Experiment setup

The equipment was set up so that the cars will break the light being received by the EL031 light sensor, thus affecting the resistance and causing a larger voltage drop across it.

Subaru Scalextric experiment equipment

Equipment

Subaru Scalextric Experiment circuit

Circuit diagram


Note that the digital output (DO) from the ADC-11 is used to power the LED and provide the voltage across the EL031. The light sensor was setup so that it was directly in the line of the LED. It was found that better results were achieved when the light emitted from the LED was focused with the aid of a magnifying glass.The track itself was setup as an oval, with the following parts:

Subaru Scalextric Experiment track setup

The track

Subaru Scalextric Experiment - the equipment

The equipment

It would not be fair to race cars using the above sections as no cross over sections are employed so the distances that the cars have to travel to complete a lap has a difference of over half a metre. The table below shows the track used:

 

LanesStraightStraight QtyCurveCurve QtyTotal distance
Inside0.3560.2083.7 Metres
Outside0.3560.26584.22 Metres

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