REFLECTOR: Franklin Magneto/inspection/priming questions
Jeff Howell
jeffreyhowell at hotmail.com
Tue Aug 4 18:10:47 CDT 2009
I direct port prime through a port that was machined into my cylinder on the intake side. it puts a small amount of fuel into the #1 and #2 cylinders... Mine has an electronic ignition and starts right up within less than a second (no lag). I have had no problems with this setup. All 6 cylinders are machined for future fuel injection... Jeff
> From: hoffman3 at erols.com
> To: reflector at tvbf.org
> Date: Tue, 4 Aug 2009 18:13:17 -0400
> Subject: Re: REFLECTOR: Franklin Magneto/inspection/priming questions
>
> I prime all 6 cylinders of my Franklin with AN4023-1 Discharge Elbows, Page 113 of the latest AS catalog. 2D flare fittings and silver solder is required.
> A Parker electric solenoid engine primer valve, AS P/N 05-04368, page 168 is used.
>
> Carl Hoffman
>
>
> ---- Original message ----
> >Date: Tue, 04 Aug 2009 13:50:40 -0500
> >From: John Dibble <aminetech at bluefrog.com>
> >Subject: Re: REFLECTOR: Franklin Magneto/inspection/priming questions
> >To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> >
> > Where can I get 2 of them?
> >
> > Michael Watson wrote:
> >
> > John,
> >
> > The PZL nozzles injects a fine misty fuel spray into the manifold, not enough
> > to cause fuel run back to the carb. I'm in Florida now so I only need two to
> > three
> > seconds to get engine start on the first or second rotation. When I lived In New
> > York, during the winter, 3 to 4 seconds would do the job.
> >
> > On Tue, Aug 4, 2009 at 8:50 AM, John Dibble <aminetech at bluefrog.com> wrote:
> >
> > Sorry, Larry, I'm not ignoring your advice and will check if I have the spray
> > nozzle
> > and if not, look into installing one. This will take time and given that I
> > have 700
> > hours without incident and know how to avoid fuel flowing out the induction, I
> > have
> > other higher priorities to address first. That said, it seems like priming
> > while the
> > engine is already turning would be an even safer, if not failsafe, procedure
> > that I can
> > use immediately. Since this procedure is not normal, I wanted to solicit
> > comments from
> > the wealth of knowledge on the reflector.
> > I prefer to think of my self as difficult, but not impossible, to help. I am
> > curious
> > to know what you see on the ground below your air intake after priming for 5
> > seconds
> > without turning the engine.
> >
> > John
> >
> >
> >
> > Laurence Coen wrote:
> >
> > > John,
> > >
> > > I tried to help you, Mike Watson tried to help you but now I think you are
> > > beyond help.
> > >
> > > Larry
> > >
> > > --------------------------------------------------
> > > From: "John Dibble" <aminetech at bluefrog.com>
> > > Sent: Monday, August 03, 2009 7:40 PM
> > > To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> > > Subject: Re: REFLECTOR: Franklin Magneto/inspection/priming questions
> > >
> > > > I think I might try using the primer while the engine is cranking, unless
> > > > there is a
> > > > reason not to.
> > > >
> > > > John
> > > >
> > > > Laurence Coen wrote:
> > > >
> > > >> John,
> > > >>
> > > >> I've never had a no-start. Your description of raw gas flowing out the
> > > >> induction would indicate to me that your primer has no nozzle and dumps a
> > > >> solid stream of fuel into the manifold. There are two things wrong with
> > > >> that, if that is the case. First you will dump a lot of fuel in a very
> > > >> short time making it difficult to do it right. Second, liquid fuel
> > > >> doesn't
> > > >> burn but vapors do. A nozzle both meters the fuel and atomizes it which
> > > >> improves vaporization. If you have a 1/8" pipe fitting into the manifold
> > > >> with no nozzle then that is your problem, not location.
> > > >>
> > > >> Raw fuel running out of the induction system has been the cause of quite
> > > >> a
> > > >> number of engine fires on start-up.
> > > >>
> > > >> Larry Coen
> > > >> N136LC
> > > >>
> > > >> --------------------------------------------------
> > > >> From: "John Dibble" <aminetech at bluefrog.com>
> > > >> Sent: Sunday, August 02, 2009 10:55 AM
> > > >> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> > > >> Subject: Re: REFLECTOR: Franklin Magneto/inspection/priming questions
> > > >>
> > > >> > Larry,
> > > >> > I have a similar prime setup. Have you ever primed and not started?
> > > >> > Mine
> > > >> > is connected
> > > >> > to the front primer port and the fuel will pour out the carb if I do
> > > >> > not
> > > >> > start
> > > >> > imediately. I'm considering moving it to the middle or rear port, but
> > > >> > want to know if
> > > >> > it will do any good.
> > > >> >
> > > >> > John
> > > >> >
> > > >> > Laurence Coen wrote:
> > > >> >
> > > >> >> Jeff,
> > > >> >>
> > > >> >> I too have a Goodman engine that sat for about five years. It sounds
> > > >> >> like
> > > >> >> you took good care of it while it was in storage so I don't think you
> > > >> >> need
> > > >> >> to do much but put in fresh oil and fire it up. That is what I did
> > > >> >> and
> > > >> >> three years later it is running fine with compressions running 79/80.
> > > >> >>
> > > >> >> Priming is something you will need. Priming by pumping the throttle
> > > >> >> with
> > > >> >> an
> > > >> >> updraft carb is an engine fire waiting to happen. There are primer
> > > >> >> manifolds that mount on the bottom of the intake manifolds but they're
> > > >> >> pricey. I built my own primer system that works very well. I
> > > >> >> pressurize
> > > >> >> the fuel system with the electric pump and have a solenoid valve that
> > > >> >> is
> > > >> >> operated with push button on the panel. I inject fuel into the center
> > > >> >> primer ports on both sides of the engine. I made my own injectors
> > > >> >> from
> > > >> >> 1/8"
> > > >> >> flare to 1/8" pipe elbows. The injector nozzle is a brass screw
> > > >> >> threaded
> > > >> >> into the elbow and center drilled with a #60 drill. Two to five
> > > >> >> seconds
> > > >> >> prime, depending on temp, does the job.
> > > >> >>
> > > >> >> Larry Coen
> > > >> >> N136LC
> > > >> >> SE/RG Franklin/IVO
> > > >> >>
> > > >> >> --------------------------------------------------
> > > >> >> From: "Jeff Clough" <jclough48 at comcast.net>
> > > >> >> Sent: Thursday, July 30, 2009 8:23 AM
> > > >> >> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> > > >> >> Subject: REFLECTOR: Franklin Magneto/inspection/priming questions
> > > >> >>
> > > >> >> > FINALLY getting around to hooking up my Franklin engine to hopefully
> > > >> >> > test fire it soon......a few questions:
> > > >> >> > 1: I have Rose dual ignition....am planning on using 1/2 of this
> > > >> >> > set
> > > >> >> > up for one set of spark plugs and a magneto for the other set of
> > > >> >> > plugs....what magneto are others using and where can I
> > > >> >> > get
> > > >> >> > one????
> > > >> >> > 2: How did others route/support their ignition wires through/under
> > > >> >> > the
> > > >> >> > Franklin plenum....got any pictures you can send to me off Reflector
> > > >> >> > ??
> > > >> >> > 3: I purchased my engine new from Pat Goodman back in about 1997 (I
> > > >> >> > think).....He had test run it, but it has not been run since then.
> > > >> >> > I
> > > >> >> > removed the plugs and put oil in the cylinders several
> > > >> >> > time
> > > >> >> > over the ensuing years , the engine has been in a hangar here in DRY
> > > >> >> > Colorado or in my heated garage in Alaska in the subsequent
> > > >> >> > years....should it be inspected or have gaskets replaced etc???? I
> > > >> >> > think there are some Franklin pros in Ft Collins CO (about 1 hour
> > > >> >> > away)...should I pull the engine off (again) and take it to
> > > >> >> > them
> > > >> >> > for inspection/servicing or should I run it for a while on my
> > > >> >> > airframe
> > > >> >> > (break it in on my airframe while on the
> > > >> >> > ground
> > > >> >> > and then (perhaps?) have it inspected/serviced ??
> > > >> >> > 4: I currently DO NOT have a priming system......is it necessary
> > > >> >> > to
> > > >> >> > have one or will the engine start w/out it just by cranking a bit
> > > >> >> > longer??? If I need a priming system , is there a
> > > >> >> > packaged
> > > >> >> > system available??
> > > >> >> >
> > > >> >> > Thanx for all your input(s) Jeff C Brighton CO 173RG
> > > >> >> > Clamshell IVO Franklin
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> > > >>
> > > >> >>
> > ------------------------------------------------------------------------
> > > >> >>
> > > >> >> Internal Virus Database is out of date.
> > > >> >> Checked by AVG - http://www.avg.com
> > > >> >> Version: 8.0.175 / Virus Database: 270.12.45/2141 - Release Date:
> > > >> >> 5/29/2009 6:28 AM
> > > >> >
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> > > >> ------------------------------------------------------------------------
> > > >>
> > > >> Internal Virus Database is out of date.
> > > >> Checked by AVG - http://www.avg.com
> > > >> Version: 8.0.175 / Virus Database: 270.12.45/2141 - Release Date:
> > > >> 5/29/2009 6:28 AM
> > > >
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> > > ------------------------------------------------------------------------
> > >
> > > Internal Virus Database is out of date.
> > > Checked by AVG - http://www.avg.com
> > > Version: 8.0.175 / Virus Database: 270.12.45/2141 - Release Date: 5/29/2009
> > 6:28 AM
> >
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> >
> >
> > --
> > Mike W.
> > 1997 Velocity Elite RG
> > Franklin /IVO Electric CS
> > Dual GRT EFIS HX Synthetic Vision
> >
> > --------------------------------------------------------------------------
> >
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> > --------------------------------------------------------------------------
> >
> > Internal Virus Database is out of date.
> > Checked by AVG - http://www.avg.com
> > Version: 8.0.175 / Virus Database: 270.12.45/2141 - Release Date: 5/29/2009 6:28 AM
> >________________
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