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Message
Yes it matters and the EC2 tries to estimate BSFC if
you have an O2 sensor attached. The BSFC constant in the EC2 is the median
at 14.7 : 1. This is all just my best guesses so don't sue me if you don't
get lab grade results right off the bat. Juggle BSFC factor in the EC2 if
you need to.
I
didn't realize that the EM-2 (I presume you really do mean EM-2, not EC-2) did
that much estimating of the BSFC. I also forgot that the BSFC was one
of the parameters. I got the .55 number from another site,
so I guess it's probably right. I also noticed today that the EM-2 manual
lists the BSFC constant as "best power mixture", but you just said
it's at 14.7, so I'm still confused.
The calculated HP displayed is based on Fuel flow and
calculated BSFC. The % power is based on calculated HP divided
by the max HP factor. If you rate the engine lower in max HP, you could
see more than 100% power displayed.
OK,
that helps. I used to see more than 100% often. Some of that
was due to the fact that my smaller injectors and uncalibrated fuel
flow made it appear that I hade more fuel flow than I did. I
also had the max HP listed at 186, when it's probably at least 200 in
the 7k range. I now have the max HP set at 200, and changed
the FF cal constant from 145 to 178 today. That should get me in
the ballpark, and I can start keeping track of fuel to fine tune
it.
This is
based on a calculation involving how long John is laid up and unable to fly and
how many times I have to sabotage Buly's EC2. :- ))))
Great answer
:-)
Thanks,
Rusty (It's always John's
fault)
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