HI PAUL

   I WONDERING IF SOMEONE TRY THE SAME SYSTEM AS FUEL
 INJECTION WITH
   SERVO,SPYDER AND MECHANICAL INJECTORS,IT SEEMS SO SIMPLE
 TO COMPARE
   WITH THE ELECTRONIC FUEL SYSTEM.

   I ASK QUESTIONS BEFORE CONVERT THE 2005 GENESIS

   THANK,S PAUL


   Jean Prudhomme

   Yes it is. Steve Beckham on here did a lot of work with
 mechanical fuel
   injection.
   The Mazda rotary engine road racers used it for years.

   Paul Lamar


   Jean--Don Rivera at Airflow Performance is the guy you
 need to contact.
   He
   supplies a complete fuel injection system for rotary
 aircraft engines.
   We
   dyno and flight tested his stuff for over 10 years on
 various rotary
   aircraft engines and it worked perfectly.  Don worked at
 Bendix and his
   mechanical fuel injection system for aircraft engines is
 very similar.
   Don's
   system works as well as, if not better than the original
 system.  Don
   also
   services certified aircraft Bendix-based systems which
 are still
   supplied
   on
   new Lycomings, and offers all kinds of services to
 experimental aircraft
   builders including components and full systems. His units
 are also sold
   by
   Van's Aircraft.The system we developed for rotary
 aircraft engines in
   the
   late 80's and early 90's used Don's
 components.  He has done rotary
   projects
   with Jim M @ Racing Beat as well.  Sean Tucker and all
 the top airshow
   and
   aerobatic competitors use Don's injection systems.
 Great guy, great
   family
   owned and operated company with great service and
 products.

   Steve Beckham

   Steve or anyone know how much this system costs - a bunch
 is my guess.
   George (down under)

   $2,860.95 is the list price from Airflow Performance for
 the 13B kit.
   Vlad

   Vlad,
   I can see why your looking at carbies.
   George (down under)


   That's pretty steep pricing, indeed.  Is it cheaper
 than the Lycoming
   setup?  The rotary only needs half the nozzles and spider
 outlets.
   Then again, I guess it's probably a fuel pump setup
 that's not common
   to anyone else - the LyCont FI setups being accessory
 case driven..

   The Holley with the leaning block looks better and
 better.  I'm not
   _that_ interested in sustained inverted flight.  For
 naturally
   aspirated, I think the Holley will be tough to beat.
 Parts available
   world-wide, any mechanic can figure out how it works,
 cheap rebuilds,
   known tuneability.

   I think the only way FI makes sense on the rotary is for
 forced
   induction or for aerobatics (which opens a whole other
 set of
   challenges (oil management)).  FI makes more sense on a
 regular
   multi-cylinder piston engine because it offers relatively
 easy
   balancing of fuel flows between the cylinders.  On a two
 rotor engine,
   it should be relatively easy to get good fuel (and air)
 distribution
   given that there are only two induction paths.


   Regards,

   Matt-

   I couldn't have said it better Matt. I'd venture
 to say that the Airflow
   Performance kit is most likely still cheaper than the OEM
 system. In
   regards
   to the Holley, sure seems nice to pay $80 for a oem
 'renew' kit and drop
   the
   whole lot off at a local mechanic for a rebuild. Talk
 about chump change
   in
   aviation money.
   Vlad


   Good.

   The only thing I might back off from is Paul's 555
 system.  It
   definitely shows a lot of promise, but it's as yet
 unproven.  I am
   hopeful, but I'm still enamored with the idea of
 buying nearly off the
   shelf stuff.  It also sounds like Mark's engine may
 be around the
   corner with Tracy's injection system.  I'll be
 interested in
   continuing updates on Mark's status.


   Regards,

   Matt-

   Matt are you sending stuff out in html format?

   Paul Lamar

  Paul's 555 system shows an amazing amount of
 potential. If I were ever in
  need of a standalone, I would either build a 555 or buy a
 MegaSquirt and
  call it a day. The simplicity and cost make the 555 really
 shine but the
  problem I have with the system is the need for a MAF
 sensor. I understand
  why Tracy choose to use MAP instead as the costs for a new
 MAF sensor are
  just ridiculous. This all goes back to how many people
 REALLY need efi?
  Vlad

  I'll be back working on that soon. I have a p-port RX8
 motor I will run it
  one.

  Paul Lamar


 Paul,
 I'm not an electrical engineer by any stretch of the
 imagination so I have
 to ask why can't the 555 system be converted to run
 info from a MAP sensor?
 I know I said I'd refrain from asking questions as to
 'not waste your time'
 but I'll play a hypocrite for the sake of knowledge.
 Vlad

 You could but why would you want to do that? You have seen
 all the
 trouble people have had trying to tune MAP systems. It is
 not for nothing
 the entire automotive world uses mass air flow sensors. The
 mass air flow sensor
 does it all for you.

I guess I'm not much for the value of money, but the price of an
after market mass MAF for say, a 5.4l v-8 is about $110, I've
seen them for less on close-outs and smaller engines. I don't
think that's excessive. $30,000 for an IO-360, now that's expensive.
In many cases, I've found that the cheapest route isn't always
the best in the long run, whether it is from cheap things wearing
out or failing prematurely(then having to pay again to replace it),
or quality issues that aren't readily appearent. I don't let my
ego prevent me from admitting that I made a mistake in the decision
making process to go cheap. If money were the issue, I wouldn't be
flying, I would be bowling. My opinion only, your results may vary.
C. Smith

They cost as little as $10 in a junk yard. You can check them in
a junk yard with an ohm meter :) If they are working they are as
good as new. Many are rejected by the dealers when all they need
is a bit of cleaning with a tooth brush and alcohol.

I had to clean the one in my V8 Mercury
Cougar once a year :) Take it into the dealer and drive out
with a $500 bill :) My 94 OBD II V8 Merury Cougar "check engine" light
came on. No idea of what was wrong.   I kept driving it for a couple
of months and finally it started to miss   real bad. I took it into
the dealer and paid them $82 just to diagnose it.

This light can come on and will stay on for any one of 256 different
"faults". One of which is leaving your gas cap off. You then need
to take it into the dealer and have him turn the "check engine"
light off for $82. If you don't do that and you take the car in
to have it's CA bi-annual smog check and the smog person sees the light
on it won't pass smog.

Paul Lamar