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In the event that you want to check your dwell, here is a reprint from the ignition chapter of our service and overhaul manual: CHECKING FOR PROPER DWELL ANGLE; The dwell angle specified for the Atomic 4 is 31 to 34 degrees for late models (Delco), and 38 degrees for early models (Prestolite).
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www.moyermarine.com/faq/4.5.html
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Dwell is measured as an angle: with contact ignition, the points gap determines the dwell angle. The definition of contact ignition dwell is: ‘the number of degrees of distributor rotation with the contacts in the closed position’.
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www.picoauto.com/tutorials/ignition-primary.html
www.picoauto.com/tutorials/ignition-primary.html
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Dwell angle has always been set by properly adjusting the ignition point gap. Your car's points gap was derived by engineers to approximate the dwell angle, but individual point sets can vary considerably in their mechanical and electrical characteristics.
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www.secondchancegarage.com/public/670.cfm
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The term dwell angle is not use in today's ignition system since in an electronic circuit there is no angle. Instead the time the primary circuit is charging is basically referred to as "charging time" or in some instances, "closed time".
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moodle.student.cnwl.ac.uk/moodledata_shared/CDX%20eText...
moodle.student.cnwl.ac.uk/moodledata_shared/CDX%20eTextbook/dswmedia/electrical/ignition/conBreakIg/dwellangle.html
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Conventional ignition is affected by "Dwell time" (or dwell angle). Dwell time refers to the time the points are closed thus recharging the coil. Dwell angle refers to the crankshaft angle of rotation made while the points are still closed.
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www.jetav8r.com/Vision/Ignition/CDI.html
www.jetav8r.com/Vision/Ignition/CDI.html
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The present invention relates to an ignition system for internal combustion engines having a dwell angle control system. ... Some of these known ignition systems operate according to the principle of dwell angle decrease and some according to the principle of dwell angle increase.
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www.freepatentsonline.com/4366800.html
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Complete Patent Searching Database and Patent Data Analytics Services. ... US Patent References:; Electrical network; - - 2244717; Cam angle tester; - - 2254175; Ignition testing device; - - 2425321; Distributor testing apparatus and circuit; - - 2444014; Electric frequency counting arrangement;
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www.freepatentsonline.com/3061772.html
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The first step in tuning your car is to adjust the dwell angle (sometimes referred to as cam angle). Changing the dwell angle ... If the cam angle is too small, the current will have insufficient time to pass though the primary winding of the ignition coil, and a weaker spark will result. If the cam angle is too great,
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www.pelicanparts.com/techarticles/914_timing/914_timing...
www.pelicanparts.com/techarticles/914_timing/914_timing.htm
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The inputs are beginning and ending RPM, RPM step, dwell angle in crankshaft degrees, resistance of primary ignition coil circuit in ohms, inductance of ignition coil primary in milliHenries, battery voltage, and capacitance of ignition coil secondary in picoFarads.
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www.bgsoflex.com/igncoil.html
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