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.

Paul Lamar