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Message-ID: <20051015030819.87194.qmail@web81208.mail.yahoo.com>
Date: Fri, 14 Oct 2005 20:08:19 -0700 (PDT)
From: Michael LaFleur <mike.lafleur@sbcglobal.net>
Subject: Re: [FlyRotary] Re: injector size
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-764764@logan.com>
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For the same reason that you used to be able to power
up the ECU in old Ford's by just pressing the brake
pedal. The battery feed from the brake on/off switch
was backfeeding the ECU. They fixed that problem by
redesigning the input circuit 20 years ago.

Mike LaFleur

--- Bulent Aliev <atlasyts@bellsouth.net> wrote:

> Hi Ed,
> I discovered last night that there is a mystery
> related to my primary  
> injector switch: with only the master on, I turn the
> primary injector  
> switch on, and the EM display comes on with 6.5V
> "low voltage"  
> reading. I have to find out how the injector cirquit
> can feed power  
> to the EM?
> Any ideas?
> Buly
> On Oct 11, 2005, at 4:47 PM, Ed Anderson wrote:
> 
> > Buly,  Something you might try is setting the
> staging manifold  
> > pressure point at a higher manifold pressure. 
> That way your 550c  
> > primary should be the only ones on at low and even
> medium rpms and  
> > since the Ec2 appears to work fine with 550s out
> of the box, this  
> > might help. Since you have already gone the mode 3
> route, this is  
> > the only thing I can think of.
> >
> > I believe the problem is that upon initial start, 
> the EC2 sees  
> > ambient pressure in the manifold (30"Hg) and
> thinks the engine is  
> > wide open throttle, it checks the fuel map for the
> amount of fuel  
> > to inject for MAP = 30"Hg and  injects fuel (a
> lot!) accordingly.   
> > Normally, this is not a problem as the engine
> immediately starts  
> > and  sucks the manifold pressure down to the
> nominal 12-14" Hg (for  
> > idle) and the fuel injected is adjust accordingly
> AND the secondary  
> > are turned off (until the manifold pressure again
> rises to the  
> > staging point), but with your big injectors having
> all four dump  
> > fuel before the engine is started and running is
> probably  
> > contributing to the problem.
> >
> > Do you have switches on your injectors and have
> you tried starting  
> > with the secondary injectors turned off??
> >
> > I presume you don't have the cold start turned on
> (accidentally or  
> > otherwise -shorted).
> >
> > I presume you have programmed a lean mixture for
> start up region .
> >
> > Ed A
> >
> >
> >
> > ----- Original Message ----- From: "Bulent Aliev" 
> 
> > <atlasyts@bellsouth.net>
> > To: "Rotary motors in aircraft"
> <flyrotary@lancaironline.net>
> > Sent: Tuesday, October 11, 2005 4:15 PM
> > Subject: [FlyRotary] injector size
> >
> >
> >
> >> Hi Guys,
> >> For the last few months I have been struggling
> with engine  
> >> flooding  on start up.  Looking at the EC2
> manual, it tells me  
> >> that it comes  pre-set for "standard" Mazda
> injectors. I checked  
> >> the injector charts  and most of the Mazdas have
> 460 or 550 CC  
> >> injectors for primary and  secondary. My engine
> (Cosmo 13B) comes  
> >> with 550 cc primary and 850 cc  secondary.
> >>
> >> I did some Mode3 adjustment on the EC-2 and looks
> like it's a bit   
> >> better, but the trailing plugs get wet if it does
> not start right  
> >> away?
> >> Any Ideas?
> >> Buly
> >>
> >> --
> >> Homepage:  http://www.flyrotary.com/
> >> Archive and UnSub:  
> http://mail.lancaironline.net/lists/flyrotary/
> >>
> >
> >
> >
> > --
> > Homepage:  http://www.flyrotary.com/
> > Archive and UnSub:  
> http://mail.lancaironline.net/lists/flyrotary/
> >
> 
> Bulent Aliev
> www.enginegearonline.com
> Email: bulent@enginegearonline.com
> Ph. 954 557-1019
> 
> > 
> 
> > --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:  
> http://mail.lancaironline.net/lists/flyrotary/
>