On magneto ignition, a lot of people think resistors should be avoided. They were never intended to be there. As I understand it, the resistor makes the available energy spread over a longer time and thus gives a weaker spark with longer duration. This gives less radio frequency interference. The RFI can affect electronics to malfunction. On electronic coil ignitions it might be preferable to use resistors. I have not the faintest if it's needed.
There is three different ways to have the resistor, either resistor spark cables, resistor caps or resistor spark plugs.
If you have a contact breaker setup as it was from the factory, no resistor is needed. On the electronic ignition systems provided by Boyer, Pazon and Tri Spark, all three recommend resistor caps.
Magneto or coil ignition?
On magneto ignition, a lot of people think resistors should be avoided. They were never intended to be there. As I understand it, the resistor makes the available energy spread over a longer time and thus gives a weaker spark with longer duration. This gives less radio frequency interference. The RFI can affect electronics to malfunction. On electronic coil ignitions it might be preferable to use resistors. I have not the faintest if it's needed.
There is three different ways to have the resistor, either resistor spark cables, resistor caps or resistor spark plugs.
Resistor
Coil ignition
If you have a contact…
If you have a contact breaker setup as it was from the factory, no resistor is needed. On the electronic ignition systems provided by Boyer, Pazon and Tri Spark, all three recommend resistor caps.
Yes, I have classic contact…
Yes, I have classic contact breaker...
Thank you for explanation