Rotor button question.

[rasorbackq]

When the button turns does it touch the terminal or is it very close and the spark jumps?

 

[Soundguy]

very close, spark jumps.

that's the design anyway... occasionally you see ill fitting parts yeilding broke rotors, or caps with grooved contacts and a pile of brass dust coating everything. this is usually preceded by a wobbling cap as it is running..

 

[puckgrinder85]

The button is in the cap, the rotor does touch the button, but it doesn't touch the distributor terminals. That's why they are replaced occasionally, the arching causes wear and a higher resistance as they do wear, just like spar plugs. There is a built in resistance but too much causes arching in unwanted area.

 

[rasorbackq]

Thanks 2 people with the same answer it must be right.

 

[PILOON]

Three!