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The Classic Biker Bar / Re: 6hp JAP ignition
« on: April 10, 2014, 11:53:07 PM »
Hi Tony,
I will have to disagree a bit with Leon's diagnosis
I believe the setup shown is for trembler coil ignition
With trembler coils the spark occurs when the contacts close, then the trembler does its thing
(similar to a buzzing doorbell coil) this provides a series of sparks while the contact is closed
I recently set up such a device on a veteran De Dion engine
On another veteran engine I made a new cam to operate conventional contact points
Set the timing at TDC or a 32second after at full retard on the lever
HTH
John
I will have to disagree a bit with Leon's diagnosis
I believe the setup shown is for trembler coil ignition
With trembler coils the spark occurs when the contacts close, then the trembler does its thing
(similar to a buzzing doorbell coil) this provides a series of sparks while the contact is closed
I recently set up such a device on a veteran De Dion engine
On another veteran engine I made a new cam to operate conventional contact points
Set the timing at TDC or a 32second after at full retard on the lever
HTH
John