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Ignition advance measurement
#4
When hand cranked the rubbing contact tends to drag the rotor to full retard, but if the motor is run and a new fangled light used, some intermediate advance usually occurs however slow the idle.

Although it does not totally gaurantee the working full advance position, the rotor can be twisted and locked with a long screw down the centre and washer. This enables the likely max advance on flywheel to be determined, usually the key vital setting as it applies for most running (unless some non standard stiff more progressive springs have been substituted).

For the benefit of newcomers, it is important that the least advance for acceptable actual performance (as distinct from noise) is used, especially with original cranks.

Assuming the distributor innards behave as the label, the appropriate very different static setting applies. The early Ruby handbook, and copiers of, very inappropriately repeats the advice intended for manual advance cars.
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Messages In This Thread
Ignition advance measurement - by Peter Naulls - 18-02-2020, 10:12 PM
RE: Ignition advance measurement - by Chris KC - 18-02-2020, 10:50 PM
RE: Ignition advance measurement - by AustinWood - 18-02-2020, 11:06 PM
RE: Ignition advance measurement - by Bob Culver - 19-02-2020, 12:24 AM
RE: Ignition advance measurement - by Chris KC - 19-02-2020, 11:25 AM
RE: Ignition advance measurement - by Chris KC - 19-02-2020, 08:38 PM

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