Resistor Caps vs Plugs
- Thread starter bpatton
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Sure, plenty of them. Go to http://www.sparkplugs.com (for example) and you can find a cross-application chart. I use Denso IW-22s (fine-wire iridium) myself but anything that cross-references (to NGK BP7ES) will work.
cash said:
Sparx said the same thing in response to my question about their three-phase alternator (which also requires 5K ohms resistance). Seeing's how it's getting difficult to find NON-resistor plugs (sure, there are still some, like NKG's BP7ES, a fine plug, but the selection is limited), I run low-resistance wires and resistor plugs.
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illf8ed said:
Generally digital electronic ignitions can need 5,000 Ohms suppression to protect the microprocessors from interference.
http://en.wikipedia.org/wiki/Electromag ... terference
Therefore digital ignition systems such as Boyer Micro Digital, Micro Power, Tri-Spark, Pazon Smart Fire all require suppressed plugs or caps to be fitted.
Analog/analogue systems such as Boyer Bransden Micro MkIII, Lucas Rita, etc. are not affected, so do not require suppressed caps or plugs although it is often a good idea to fit them to stop TV and radio interference which is why they were fitted in the first place.
What about resistor ignition wire? I used a set of Accel resistor plug wires without caps with my Boyer MK3 and non-resistor plugs. I don't recall any problems. I've since changed back to resistor caps, but I don't recall why. Probably overcome by a bout of tinkeritus.
maylar
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JimC said:
I'm using resistor wires on my bike now. It's just an experiment, as I needed to make up new wires and that's all I had. Some people claim that the vibration of a Norton will cause the carbon in resistance wires to eventually separate and lose conductivity, so plugs or caps are preferred.
From what I understand, SCR regulators (like the Sparx 3-phase) are prone to triggering by RF interference and can over charge your battery. My regulator is a long way from the spark plugs and I never had any problems with solid wires.
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