Racing Beat did a real crappy job of installing the fuel injectors.
 Kind of strange as they ignored everything we did over the past 18
 years to address this issue. Actually they ignored everything we
 ever did :-)

 RB was using the Mickey Mouse Paul Yaw injectors with filters which
 have their draw backs as well.

 We nearly lost the TTC airplane not to mention Dan on Thursday to a
 possible massive fire when we were running it up. Safety wire was
 used to hold the injectors in alignment with the Paul Yaw filters
 and the mechanic left it off. Probably did not think it was
 necessary.

 The injector popped  out of alignment with the Paul Yaw filters and
 sprayed raw Menthol all over the engine. I ran over and pounded on
 the canopy to get Dan to shut it off. Partly my fault for not
 noticing the missing safety wire.

 The proper way to do it is put all the injectors in a line and use a
 fuel rail. The fuel rail is key to holding it all together.

 Paul Lamar


 Hi Guys

 I do agree that the injector mounting is not rite. But!! I do not
 agree that the Paul yaw injectors are micky mouse. If the injectors
 where mounted in the correct fashion. There never would have been a
 problem.

 Nils

 It is totally unnecessary to have a cheap anodized extension on each
 and every injectors that does ABSOLUTELY NOTHING except make it prone
 to fail. It is a marketing ploy to make the injectors look different
 than the ordinary  mass produced STOCK Bosch injectors witch they
 are. People will think they are something special and pay twice as
 much money. I am not fooled :-).  It is a scam pure and simple.

 As you can see from these pictures there is absolutely nothing in the
 purple extensions but air :-)

 The drawback is yet another O ring joint and a Mikey Mouse steel
 clip to hold them together. Just something else to cause problems.
 That is exactly  what failed in our case nearly burning the aircraft
 to. the ground and possibly  killing Dan.

 I have known about Paul Yaw for at least 18 years. Here is Mazda 13B
  engine he built years ago. The Canadian  sea plane purchaser was
 very disappointed in the HP because it was not a p-port. It was a
 cut down side port stock manifold.  Basically the same basic parts RB
 got 650 HP out of  with a p-port :-) Believe me, the purchaser would
 have been quite happy if had as little as 300 HP.

 I don't think it even had a gear box. It does not look like it.

 Paul Lamar


Paul, the purple adapter is used so the shorter injector can be used as a replacement for old style longer injectors.
You may be able to eliminate it and use a shorter double bracket that will more easily keep the AN adapter union square.
 Where the injectors claim [clean]  after using the methanol? And what type mechanical fuel pump are you using?
Barry Bordes


Well I can see the need for that in certain circumstances but this is supposed
to be a new engine. Why the devil did RB used them here when it would be a simple
mater to make new  holders to fit. Yaw charged us twice as much for Bosch
injectors with them.

We must have mental telepathy :-)
I just made one last night in less than an hour. I am
going to use it as an injector tester. I can program a maximite to get any
pulse width and pulse rate I want.  Al I need is an EFI pump which I have
a few lying around.

We flush them with gasoline before we run the engine. I will test them before
we run it again.

The mechanical fuel pump is part of the dry sump
pump. There is an electric boost pump for starting. I don't recommend
doing this. There are plenty of high pressure, high volume electric fuel pumps
with fuel pressure regulators on the market for drag racing.

The Motec measures the pressure out of the mechanical fuel pump
and adjust the pulse width accordingly I think.  There is also a pressure regulator
keyed to manifold pressure. Yet more stuff to go wrong and
needless complication.


Paul Lamar

 The Rotary Engine free News Letter. Powered by Linux. If you want
 off the list PLEASE let me know and I will remove  you.  ACRE NL web
  site. http://www.rotaryeng.net You Tube http://tinyurl.com/beqqxas
 Copyright 1998-2016 All world wide rights reserved.