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Topic: Ignition System Components: |
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Breaker Points and Condensers |
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| Points and condensers were used to control the primary current flow in the ignition system for more than 75 years. The point set is made up of a stationary contact negative, connected to chassis ground and a movable contact, positive connected to the negative side of the coil. Our contacts are made from 99% pure tungsten to prevent them from burning. The movable arm is insulated from ground, so when the distributor cam lobe forces the contacts apart, an open circuit is created in the coils primary circuit. |
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| Condensers: The condenser acts like an electronic shock absorber. When the points open, the power from the coil is absorbed in the condenser (the only path to ground). When the points close again, the condenser discharges that power back into the circuit. This reduces point arcing and also prevents the contacts from burning. The air gap setting between the contacts is critical for a correct dwell (dwell is the amount of time the coil is receiving current) and ignition timing. Breaker-Point ignition systems need periodic service in order to maintain a high performance level. |
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Caps and Rotors: Distributor caps and rotors are key components in the ignition system. Their primary function is to transfer the high voltage output of the coil to the spark plugs. They are made of insulating plastics that can withstand high voltages. On most distributor caps a design that incorporates ribs is used to control voltage flash over between terminals. Some caps are designed with vents, to dissipate ozone gases created from the voltage arcs. The significance of the components and design is often overlooked in the quest for engine performance. Using high quality materials and superior design techniques may increase the cost of these parts but gives added value in terms of improved conductivity, performance, and an extended life cycle. |
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