[Diy_efi] Electronic expertise requested

[Shannen Durphey]

It is relatively easy to verify the effectiveness of the proposed 
solution and to determine some of the potential problems before 
installing the system in an aircraft.  After all, these are automotive 
computers.  Connect parallel systems in a car and drive around.  It may 
even be practical to connect at least one ecu to the aircraft engine to 
monitor engine data, leaving the injection and timing connections 
disconnected.

Data collection and careful observation are very good means to 
understand a system.  I cannot fathom anyone working on modifying 
aircraft without a good understanding of what they are doing.  I have 
many hours of data recorded for my car.  I can't imagine the drive space 
I'd require for an aircraft.

Shannen

bcroe at juno.com wrote:
> Its a lot more complicated than that.  I don't even know 
> how many failed switches (lose it all) I've replaced.  How
> is the standby going to react going from open loop to 
> closed loop when you change?  Aircraft engineering is 
> NOT something you trust to the internet.  This is not a 
> situation where its easy to fix your mistakes.  
> 
> Bruce Roe
> 
> On 19 Jun 03 Shannen at grolen.com writes:
> 
> 
>>I wonder about the acceptability of leaving both ecm's connected 
>>and "running" at one time, but electrically disconnecting 
>>the injectors and timing control (if used).  Switching between
>>the two boxes might be as simple as flipping a DPDT switch?  
>>Garfield and a few others have gone over different schemes 
>>to set up dual ecm's.  Those posts should be in the archives.
>>
>>Shannen
> 
> 
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