Bench racing ecms Even if ya hate 101 please read

[Shannen Durphey]

Yup.  Should have read "outputs 7VAC @ 60hz  for 54mph." 
Additionally, some ecms use 2000 pulses/mile or 30hz @
54mph.

Apologies.
Shannen   

TBK wrote:
> 
> 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
> >