FW: Electronic timing advance

[Bruce Plecan]

-----Original Message-----
From: Don.F.Broadus at ucm.com <Don.F.Broadus at ucm.com>
Subject: RE: FW: Electronic timing advance

Now that is clever, if working with a sensor with a pipe thread a hardware
store
black iron coupling would be perfect so they are in the same plane.
Bruce


>I haven't tried this setup yet but see what you think of it. Since the KS
is
>a pizo device if a frequency is applied to it then vibrations
>will be produced. If a plate was drilled and tapped for two KS and a signal
>generator applied to one sensor and the ESC module connected to the other
>one, I would guess you could very accurately map the range of a ESC.
>
>My .02$   Don
>
>> -----Original Message-----
>> From: Bruce Plecan [SMTP:nacelp at bright.net]
>> Sent: Friday, January 22, 1999 7:32 PM
>> To: diy_efi at efi332.eng.ohio-state.edu
>> Subject: Re: FW: Electronic timing advance
>>
>>
>> -----Original Message-----
>> From: Charles Brooks <cbrooks1 at mail.tqci.net>
>> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>> Date: Friday, January 22, 1999 7:36 PM
>> Subject: Re: FW: Electronic timing advance
>>
>> If your running a ESC Module, they have a diagram for a DIY one at the GN
>> Ttype
>> site,  or just us a 339/any comparator to the input of the KS to the ecm,
>> have
>> it trigger a 555 as a monstable for a sec., and use it's output for a
LED,
>> relay
>> etc..   Some of the GN Ttype vendors (ie ATR, I think) have an animal for
>> sale.
>>    If your car doesn't have a ks then buy a matching ESC Module, and
>> matching knock sensor (well for gm's anyway).  and wire it up
>> I think the bias voltage from the esc to the ecm is 7v.  Set up the
>> comparator for 6, and then just a "filtered""real" knock will trigger it.
>>   I have played mix, and match with them, and while there is some
>> difference for those having trouble reading plugs, any thing is better
>> than nothing.  Like I'm currently using a v-8 ks with a 231 ESC Module
>> and for my combination it's perfect.
>> Bruce
>>
>>
>> >Do you know of any ready made gizmo's to do that? What do they trigger
>> off
>> of,
>> >the sensor or the ECU? If there isn't any such animal currently what
>> would
>> be
>> >the recommended trigger for a homemade job, sensor or ECU?
>> >Charles Brooks
>>
>