08-08-2021, 10:57 AM
Yes - sorry SF40 is right, the later more triangular ones are SF80.
The driving force for the plunger that pulls up the arm is from the magnetism generated by the current passing through the coil windings. If the insulation on the copper wire is imperfect and not doing its job properly any more then the current can take a short cut through the coil and the force applied to the plunger will be reduced. One of the trafficators I have here has been home rewound - looks scruffy but works.
The driving force for the plunger that pulls up the arm is from the magnetism generated by the current passing through the coil windings. If the insulation on the copper wire is imperfect and not doing its job properly any more then the current can take a short cut through the coil and the force applied to the plunger will be reduced. One of the trafficators I have here has been home rewound - looks scruffy but works.