about ignition coil

[LUCHO]

Hello,
I built a chopper and i want to put just one ignition coil (like some Harley ) and not 2 like the origin.
It is possible to do that ? is there anybody make this modification on is bike?.
What power i must use to have the same of 2 igntion coil?.
Thanks for your help.

 

[drewpy]

I don't think it works as there's not enough time for the coil to recharge for the next cylinder fire.

 

[LUCHO]

Ok but why it's works on a Harley?.

 

[drewpy]

its a 360' crank, both pistons go up and down together so there's enough time for the coil to "soak" the electricity

xs400's are 180', 1 piston up, one down so it fires all the time

 

[LUCHO]

Thanks Drewpy for your answer so i must put two igntion coil.

 

[drewpy]

Thanks Drewpy for your answer so i must put two igntion coil.

yep, as Mr Yamaha designed it