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Message-ID: <20060629203455.57185.qmail@web30107.mail.mud.yahoo.com>
Date: Thu, 29 Jun 2006 13:34:55 -0700 (PDT)
From: Steve Brooks <prvt_pilot@yahoo.com>
Subject: Re: [FlyRotary] Re: Difficult cold start
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-1212475@logan.com>
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Buly,
Are you rich enough ??

When I cold start, I turn the mixture to 3 o'clock,
cold start on, bump the prime twice, and hit the
starter.

Even after sitting for a month or more, it fires up
after about 2-3 seconds of cranking.

If I don't have the mixture turned to rich, or the
cold start on though, it won't fire.

Steve

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

> Steve, I have cut off switches on my pumps and I
> shut the engine by  
> shutting the fuel pumps off. The strange thing is
> that once it  
> sputters, I have to give it a boost with the cold
> start, or it will  
> die again? Maybe I have to install the bypass fuel
> bleed circuit? all  
> my injectors are uphill and any fuel leaking, will
> go in the engine.
> Buly
> On Jun 29, 2006, at 4:09 PM, Steve Brooks wrote:
> 
> > Buly,
> >
> > I have the opposite problem.  When hot,, mine
> start
> > somewhat hard.  Especially if it has sat for a
> while
> > and has a good heat soak.  I believe that my
> intake
> > gets hot, and is what causes my hard start when
> hot.
> >
> > On your problem, I used to have an issue with cold
> > start, before I added a cutoff switch for the
> primary
> > FI pump.  I had trouble leaving pressure on the
> fuel
> > rail, because it seeped through the injectors and
> ran
> > out of the throttle body.  Some ran into the
> engine
> > also, which caused it to be flooded.  Wet plugs
> are
> > hard to get started.
> >
> > On shut down, I turn off the primary FI pump, and
> let
> > the engine die before cutting off the master
> switch.
> > No more problem with the flooding.  Also, if I do
> > flood it (hot start), I shut off the fuel pumps,
> and
> > when the engine fires up, I flip the pump on and
> the
> > engine continues running.
> >
> >
> > FWIW,
> > Steve Brooks
> >
> >
> > If your problem is flooding, I can see why priming
> > doesn't help.
> >
> > --- Bulent Aliev <atlasyts@bellsouth.net> wrote:
> >
> >> Today I did couple of fast taxis with my test
> pilot
> >> that flew the
> >> plane the first time with the turbo and fixed
> pitch
> >> prop.
> >> We had 500 pounds on the front seat and the plane
> >> lifted off the
> >> runway in less then 1500 ft. He said it is a
> great
> >> improvement from V.
> >> 1.0. That's the good part. Last few times I had
> >> trouble starting
> >> cold. If I give it a sniff of the starting fluid
> it
> >> will sputter and
> >> I have to turn on the Cold Start for a second or
> two
> >> to get it going.
> >> Before start I hit the primer 4-6 times, but it
> does
> >> not help. After
> >> it worms up, starts instantly. Anybody with ideas
> to
> >> improve the
> >> situation? Thanks.
> >> Buly
> >>
> 
> 
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