Repost of resistor subject

[Zane]

Just wondering if I posted this subject in the wrong forum, since there have been no replies to it, so I will repost it in this section. I'm still interested if someone has the answer.

 

 

I PM'ed Condor about a spark related issue and I posed the question to him as to why it is necessary to have a resistor sparkplug cap and a resistor sparkplug. Answer me this question, aren't resistor plugs primarily used to supress electric pulses from interfering with a radio? Yes ,Ventures do have a radio, but isn't the primary reason for owning a motorcycle to ride it and not listen to the c@#p on a radio. Any comments, suggestions, and/or helpful advice? Condor mentioned that he thought that VGoose had posted on this subject at one time. Soooo.....

Thanks all

[bkuhr]

Resistor used for electronic noise suppression not just for radio, but also for other electronic systems such as engine control computer.

 

Resistor causes spark to slow down, ie: last longer. This time change is what limits high freq noise, but as the power of the spark is spread across a longer time, the strength of the spark is also diminished.

 

As with most things engineering, it is a comprimise.

 

Not saying can't try loosing resistance in one or the other, resistor in cap or plug, but also may require shielding/spacing of electronics, and engine design may be specifically designed for the longer duration spark by cam design, and may have other issues with short duration spark.

 

[Monty]

Read this thread...

http://venturerider.org/forum/showthread.php?t=41546&highlight=copper