Bench racing ecms Even if ya hate 101 please read

[TBK]

It's 1.11Hz/MPH

-----Original Message-----
From: Shannen Durphey <shannen at mcn.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Tuesday, June 16, 1998 12:59 AM
Subject: Re: Bench racing ecms Even if ya hate 101 please read


>Bruce Plecan wrote:
>>
>> I just put the hammer, and nails away from nailing the ecms down.
>> Actually coffee cup hooks, and rubberbands.  Got a 1'x2' sheet of
>> particle board, 1/2" thick, and the ecms tied to that via the
rubberbands.
>> So some barrier strips and we get to fire up the
>> soldering iron (well actually crimper).
>>
>> Here is what I have, and what I think I need, any thoughts comments
>> appreciated.
>> <snip>
>> A 50% dwell frequency generator for VSS,  hopefully this will work,
>>     and not have to bother with Buffer/amp, or DRAC..
>
>GM speed signal generator outputs 7VAC @ 60hz for 60mph.
>
>
>> A rpm signal generator, but have to work out an interface to module
>>      is a transformer necessary?.  Ya think just a 1.2v DC pulse would
>>     fire the module?.  Use a monstable 555 for the 1.2v, and then
>>     an adjustable astable for rpm?.
>
>Same speed signal generator, when connected to pickup coil
>terms on module fires it quite well.  Module sends reference
>pulse to ecm.
>
><more snip>
>Shannen
>