Engine Analyser [Vane Tunescope]

Maker and role
Vane Australia Pty., Ltd., Manufacturer
See full details

Object detail

Accession number
2019.111
Production period
Description
Vane Tunescope Engine Analyser, Model VP-725.
This type of machine was used to check the operations of a vehicle engine. The four connector leads attach to the ignition system of a petrol engine vehicle and analyses the engine timing and volts for the purpose of diagnostics and adjustment. This equipment was generally used pre-1980.

The analyser machine consists of a large red and black metal-clad box shaped device with controls and display gauges on the front. A white panel at the top of the face reads "VANE TEMPO.SCOPE". There are two multivariable analogue meters for displaying Volts, Dwell, Advance, Resistance, and Revolutions per minute. There is also a large CRT display with graph overlay on the leftmost display panel showing Voltage. Several switches and dials adjacent the displays make up the 'Test Selector' and 'Pattern Selector' which allow the user to view different variables. A light-up power switch is located at the bottom right corner of the control panel. At the rear of the unit near the base is connected a grey power cable, fuse, and four coloured seven-pin sockets to connect the leads (blue/green/yellow/black). Also on the rear are two small brackets to fit the cable holder, and two grids of ventilation holes. The whole unit sits on a small metal framed trolley/table. The table is painted grey, has four casters, and has a slide out drawer just under the top.

The connector leads are held in a right-angled metal bracket. Three coloured seven-pin sockets (blue/green/yellow) branch into five connectors at the other end. Two connectors are large rectangular shaped coloured yellow and green; the three other connectors are smaller conical shaped coloured blue, red, and white. The black connector is separate from the others and terminates with a large black plastic tool. The tool has an on/off dial and a large circular opening at the end with bulb inside.
Brief History
This type of machine was used to check the operations of a vehicle engine, with checks being carried out in reference to the engine manufacturer’s specifications. It would be used by a mechanic after completion of a thorough inspection of the vehicle to remedy any obvious fault, such as a bad wire, which could impact the results of tune scope testing. The four connector leads would attach to the ignition system of a petrol engine vehicle and analyse the engine timing and volts for the purpose of diagnostics and adjustment. Oscillating patterns displayed on the oscilloscope screen (left of the machine) could be interpreted against example patterns in the tunescope’s manual to aid during a service, for example, checking the condition of spark plugs. This type of equipment was generally used pre-1980 and was made obsolete by computerised engine analysis. The donor purchased this one second-hand in the 1990s because it came complete with a manual and wiring diagrams which were donated along with the machine.
Marks
MANUFACTURED BY / VANE AUSTRALIA PTY., LTD. / BEVERLY HILLS N.S.W. / VOLTS 240 WATTS 200 H.Z. 50 / MODEL VP725 SERIAL SG725-2 Maker's Plate
VANE TEMPO.SCOPE Printed
ADVANCE / VOLTS DWELL/ADV. ; ENGINE / RPM Printed
25KV / 50 KV / BRIGHT ; VERT ; HORIZ ; RIGHT ; EDGE Printed
MODEL VP 725 / CRANKING VOLTS / POINTS RES. / CHARGING VOLTS / DWELL / TIMING ADVANCE / TEST SELECTOR / 9000 1500 RPM / POWER Printed
SECONDARY 25 KV PARADE / PRIMARY 50 KV PARADE / OFF / RASTER / PATTERN SELECTOR Printed
DANGER / High voltages are present / in this instrument / Power mains must be dis-/ connected when cabinet is / removed Printed
CAUTION / REPLACE WITH / 1.5A. 240v. SLO-BLO FUSE Printed
Credit Line
Vane Australia Pty., Ltd.. Engine Analyser [Vane Tunescope], 2019.111. The Museum of Transport and Technology (MOTAT).

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