In article ,
Roger Mills wrote:
The discussion came about when details were sought about locking a
distributor so it is only a trigger and HT switch when using a mapped
electronic ignition. Do you set the phasing on full retard, half way,
or full advance?


Ah well, that's an entirely different question! If the spark timing is
not controlled by the cam opening a pair of points,

Effectively it would be - but a sensor replacing the points, still
triggered from the 'cam' underneath the rotor arm.

some part or other of the hockey-stick-shaped contact needs to be close
to the contact in the cap over the whole angular range in which the
spark may occur. I've no idea where you'd have to 'fix' it to achieve
that - if indeed it's possible at all. In a conventional distributor,
the contact length only needs to cover the range of vacuum advance
angles - but in this new situation you need to cater for the *total*
advance range.

Think it may be easier to swap to EDIS. ;-)

--
*If you can read this, thank a teecher

Dave Plowman London SW
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