coil polarity

Would guess the Ignitech is not supplying the coils until the engine is cranking, no problem with low resistance coils then. I do not know what the Bosch ignition boxes are doing when powered up, though. On a points ignition you would definitely need some balast resistors for using 0.3 Ohm coils safely.
 
Fuses were 4 amp Stefan.
Coils are 3 Ohm.
Didn't have time to hit the starter, just switched on and the fuse blew immediately.
Worked ok with the ND coils.
Paul
 
Stuck a 10A fuse in. Sparks at plugs and it runs.
I'm not sure those Nology coils are electron friendly!
Paul

Thanks Stefan.

Paul
 
I vaguely remember those ND coils having a primary resistance of around 3 Ohms, so that would not make much of a difference, once the engine is running, especially at some higher rpm. The deleted ballast resistors should give a bigger effect on current draw. Some additional strain might be loaded on the Bosch ignition boxes, too, but can't see big problems there, except for extended periods of powered ignition w/o engine running or long idling periods, maybe. Easy to avoid that on a track bike, I'd guess. ;)
 
Gravelroad said:
I vaguely remember those ND coils having a primary resistance of around 3 Ohms, so that would not make much of a difference, once the engine is running, especially at some higher rpm. The deleted ballast resistors should give a bigger effect on current draw. Some additional strain might be loaded on the Bosch ignition boxes, too, but can't see big problems there, except for extended periods of powered ignition w/o engine running or long idling periods, maybe. Easy to avoid that on a track bike, I'd guess. ;)
Click to expand...

Yes. This thing isn't going to iddle.
Since I'm running total loss ignition, ie no charge, I want to economise the battery but I think I'll very rapidly put an altenator back on.
Paul
 
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