Wheel decoder question

[Keithg]

I have a question about wheel decoder again. I am looking at making this dizzy wheel:
http://www.wowway.com/~kgrider/saab/trial_dizzy.jpg
Cyl 1 is at top. It is for a V8. My goal is trigger return cranking and would like output possibilities of single coil or wasted spark. The targets are spaced so that I would have 60 degree trigger and 10 degree cranking (60-2*25). The concern is that the 'tooth spacing' would not be regular to achieve this. It would be 50/40 Crank Deg between targets. My intention is to run 'no missing' and '2nd wheel'. To do wasted spark or single spark output, I know I would have to add another 2nd trigger 180 deg from where it is right now on that smaller diameter.
My trigger,return pairs would be:
1,2
3,4
5,6
7,8

Anyone see any problems with this scheme? I am considering adding timing control to my 215/3.5L Buick by using MSnS-E as spark only for now and adding fuel later.

Comments/suggestions? I am looking at a dizzy wheel as I need the dizzy to drive the oil pump, so it needs to be there.

KeithG

[jsmcortina]

The existing 2nd trigger code does not care about the intermediate tooth spacing. (The missing tooth code certainly does.)

I mounted a standard 36-1 pressed wheel on the front of my Rover V8 (215ci) using the old style front pulley which may be similar to the original Buick design.

James