Thanks for the response. I too am using Bob's Z-14 diagram....as a
matter
of fact it is literally what I am working on now.....today, even,
if'n I get
out there, which I hope I do. Bob is scheduled to come to speak to
my EAA
chapter (EAA Houston, Chapter 12) in October. He expressed his lack of
desire to come during a Houston summer <g>
My most pressing question right now has to do with the placement of
the fuel
pressure regulator. I have gotten different perspectives from
difference
folks as to whether it should go inline before the injectors or
after the
injectors. The concern and/or confusion comes mostly from the
"pin-hole" in
the fuel rail. One engineer says the pin-hole will be acting as the
pressure regulator so no other is needs, another says it should go
before
and still another says it should go after (like many auto's do). I
guess
this is one of the problems that goes with being at an airport with
dozens
of ROCKET SCIENTIST (we are NASA's Johnson Space Center's main field
(EFD -
Ellington Field).
I have most the fuel system complete, except for this one little item.
Several emails have been sent to Mistral, but we have had no
response.....guess I am too small a fry with just the intake/fuel rail
purchase (even though I am thrilled they made it available). Since
I am at
a bit of a hold up with the fuel regulator, I moved onto the
electrical. I
have wired most of RWS (Tracy Crooks') ECU and started its install and
I
have the "big wires" installed in my Velocity. Should be mounting
the B & C
contactors, regulator and busses etc later today.....well, in theory.
THANKS AGAIN.
All the best,
Chris
Chris,
I posted this for a Mistral manifold user on Flyrotary a while back.
The functionality is the same as other systems and allows the "bypass"
function for repriming should you run a tank dry. You still need the
regulator. The small hole doesn't perform the regulation function. You
still need a pressure regulator with a manifold pressure tap (reference)
for things to work correctly. The regulator maintains a constant
pressure delta relative to manifold pressure to work the best.
Bill Jepson
There has lately been a thread on this newsletter which questioned Mistral
Engines' support to some of its customers. This is inexact and I would like
to set the record straight:
1. Mistral never sold anything to any Chris. Having said this, we did sell
an intake manifold and fuel rail kit in July 2006 to Mr David S. in Texas.
We believe but have never been formally notified that David and Chris are
partners on a rotary powered Velocity.
2. In August, David came back with some questions which Mistral's Chief
Engineer, Gordon Anderson, answered at length on 8/14/06.
3. On 3/2/07, I received an email from Mr Blaine S. from Texas, who
mentioned that he was working with friends on a rotary powered Velocity
equipped with Mistral's intake system and fuel rail, but he didn't name
these friends. Blaine asked questions pertaining to Mistral's fuel rail and
fuel system in general. Gordon answered them at length, together with
excerpts of some Mistral's manuals, on 3/19/07.
4. Neither Gordon nor myself have received any other communication from
either David, Chris or Blaine.
Mistral Engines DOES SUPPORT ALL ITS CUSTOMERS to the best of its technical
and human resource capabilities. In the present case, the total time Gordon
spent supporting this sale ate up pretty much any profit margin we may have
had. That's OK but everyone will agree that it cannot become a rule.
However, let me state here that Mistral Engines will keep supporting its
existing spare part customers.
If an email from Chris got lost, which is of course possible, we sincerely
apologize to him and ask to please resubmit. However, in the case of his
questions relative to the fuel rail, we believe we answered his partner last
month, within a couple of weeks of the inquiry. May I humbly suggest that
partners within a project identify themselves clearly to us or, better yet,
that all communication be routed through the purchaser, because that is how
we keep our client files.
Fly safe,
Francois Badoux
CEO, Mistral Engines
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