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Re: more details sbc in place of lt1




On Tue, 25 Jul 2000, Andrew K. Mattei wrote:

> Well, with a little electrical wizardry you could do a crank hub monitoring
> sensor to simulate the 8 (IIRC) pulses per rev of the lo-res Opti pulse, and
> then some sort of black box trickery to 'create' the high-res opti pulses
> based on those lo res pulses. Essentially what the Electromotive LT1 SDI
> (which is no longer available) did, right Roger? Perhaps 9 holes drilled in
> the crank hub - 8 at every 45 degrees, adding one at an odd spot so that
> it's "keyed", with a small magnet inside each hole, and a hall effect sensor
> mounted to the timing chain cover to detect them as they go by...

Yeap, no longer available.   The SDI thing had teeth every 6 degrees
(60 teeth I think).     They had 3 teeth missing a bit before TDC to
signal TDC was comming up.

				Roger

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