Boyer Electronic Ign

Back in the early 90's I bought and restored a 1973 850 Commando that had been completely destroyed by fire. I rode it for a few years and then moved interstate. It has been started intermittently over the past 15 years. I have decided to put it back on the road and I would appreciate some advice re the wiring of a Boyer system.

Background

1973 850cc Commando
Boyer electronic ignition circa 1995
solid wire HT leads
NGK plug caps (suppressed/unsuppressed ???)
6V coils wired in series
champion plugs
ballast resistor connected
disconnect yellow/black or white/black causes plugs to fire

Question
Can I use any combination of solid wire HT , carbon core HT leads with suppressed/unsuppressed plug caps? Is there a right way

The ballast resistor is connected in the circuit (don't know why I did this - too long ago). Will this effect the performance of the Boyer?

I have run a search but too much non specific information Any help/advice would be appreciated.

cheers

george

Can I use any combination of solid wire HT , carbon core HT leads with suppressed/unsuppressed plug caps? Is there a right way

Click to expand...

Analogue Boyer (black box) use solid wire HT, unsuppressed plug caps, non resistor plugs, Digital Boyer (red or blue box) use solid wire HT, unsuppressed plug caps, resistor plugs. Carbon wires can't handle the vibration and break down, a resistance is needed on digital boxes to suppress interference with the brain chip in the box so resistor plugs or caps but as you change plugs more frequently than caps its better in the plug.

The ballast resistor is connected in the circuit (don't know why I did this - too long ago). Will this effect the performance of the Boyer?

Click to expand...

On installation the recommendation is two 6V coils in series with no ballast so both coils see 6V, the ballast will make the 2 coils see 3V not 6V and a weak spark if they are in series. So take the ballast out of circuit.

You can check the resistance of the plug cap to see if they are the suppressor type or not. These usually measure about 5K Ohms. If non-suppressor then it is straight through (0 Ohms).

Russ

aussie said:

The ballast resistor is connected in the circuit (don't know why I did this - too long ago). Will this effect the performance of the Boyer?

Click to expand...

Precisely where in the circuit did you connect it?
If connected in the ignition feed to the Boyer box then the ignition may not work at all, nevertheless the ballast resistor should be completely disconnected/removed when using a Boyer electronic ignition.

Thank you for your speedy - informative replies. Much appreciated

cheers

george

Hi George

I am in Brisbane on the N'side, I was running a Boyer Electronic ingition for over 30 years, if you need any help I am only to please to help, but one thing you need to drop the Ballas resitor out of the wiring for the Boyer to work properly, I used hard core wires on my leads and never had a problem, PM me if you ever need a hand, always willing to help a fellow Norton owner and there are a few here in Brissy that are members here as well.

Ashley