The subject of electronic ignitions has come up and this has started
me thinking about building a system for my TR-6.
If one wanted to find the best place to mount an engine position/speed
sensor it would be under the distributor cap. In fact I would throw
out the rotor and distributor cap altogether. A relatively simple
circuit could fire those new mini-coils one for each plug. At the
last New York auto show I was checking out the Saturn engine and they
have two coils which fire the plugs and no noticable distributor
cap. I guess one coil fires two plugs which are apporximately 180
degrees out of phase of each other.
At any rate trying to mount a relatively sensative optical or
mechanical rotary position sensor next to a hot, vibrating , oil
leaking engine is a tough job. The sensor would have to meet
mil type specs for temperature and shock. If I ever build it
I'll let the net know if it worked or not.
Mark deHaas.
DEHAASM@NAPC-1.NAVY.MIL
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