Spark plugs exploded, why?

[Honclfibr]

Originally posted by elaineo
well... the plug will fire at the same voltage, resistor or not. The resistor will reduce the current flow but the total energy/heat dissipated has to be the same, it'll just result in a longer spark (and weaker spark, because of the energy dissipated in the resistor).

Right of course, conservation of energy and all that. I need to retake high school physics.

[bemused]

Originally posted by elaineo
well... the plug will fire at the same voltage, resistor or not. The resistor will reduce the current flow but the total energy/heat dissipated has to be the same, it'll just result in a longer spark (and weaker spark, because of the energy dissipated in the resistor).

hm-m-m... must be gettin' older, 'fraid I'm missing your point here, please elucidate...

- plug WILL fire @ the same voltage each time (all other things being equal)... any voltage above that threshold will do the trick.

- but the resistor WILL create a proportional voltage drop across it, regardless of what the voltage is, the moment the plug fires. its in a series circuit, it can't help it.

- presumably, the voltage out of the coil-- or the gap-- is adjusted to compensate for this drop in systems that incorporate the resistor? in any event, for the split-second that the circuit is complete down to the plug, it's gotta have enough volts to drop what it drops across the resistor & retain what's required to jump the gap.

uh-h-h... what was the question again?

[Stoneman]

I LIKE BOOBS!

Dayamn!!! Wrong lever!!!

[ftrain]

Originally posted by kmf
As for the hose clamps, how many people have you heard of that had the fuel line pop off and their bike burst into flames as they were riding it down the road?

I have had two bikes catch on fire.