[NSRCA-discussion] OS 140Rx pump question

[John Pavlick]

OK, I usually run Magnum but I haven't picked up my winter supply yet. Guess
I should take a ride...

John Pavlick
http://www.idseng.com


> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of
> Lance Van Nostrand
> Sent: Monday, September 25, 2006 10:33 PM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] OS 140Rx pump question
>
>
> Add this advice to mine. I support this.  Magnum 15% also is fine.  I've
> tested a lot of fuels and would not put Omega through a pumped
> engine ever.
> CoolPower has the highest detergent factor of all the fuels I've
> tested so
> it is an excellent suggestion to start wtih.
> --lance
>
> ----- Original Message -----
> From: "Wayne Galligan" <wgalligan at texasairnet.com>
> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> Sent: Sunday, September 24, 2006 7:51 PM
> Subject: Re: [NSRCA-discussion] OS 140Rx pump question
>
>
> > First thing I would do is switch over to regular Cool Power.
> Omega has
> > castor oil and it can gum up or varnish in the engine.  You will have a
> > bear
> > of a time getting the rod to slide on the piston wrist pin
> because of the
> > castor gumming up on the pin.  The regular Cool Power uses synthetic and
> > does not gum up on any of the parts.
> >
> > The pipe length sounds about right.  But one inch short and it will run
> > fat
> > in the midrange.  Try a little longer and switcging to Cool Power 15% or
> > 20/20 blend
> >
> > Wayne
> >
> >
> > ----- Original Message -----
> > From: "John Pavlick" <jpavlick at idseng.com>
> > To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> > Sent: Sunday, September 24, 2006 7:49 PM
> > Subject: Re: [NSRCA-discussion] OS 140Rx pump question
> >
> >
> >> Sorry - Aeroslave pipe, APC 15.75x10 3-blade (re-pitched by Dave L.).
> >> Fuel
> >> is morgan Omega 15%. The pipe is currently set at 31 3/4" straight-line
> > from
> >> plug center to the end of the pipe with an OS O-ring header. I
> know this
> >> measurement only makes sense if using the same header or at least one
> >> with
> >> the same total length.
> >>
> >> John Pavlick
> >> http://www.idseng.com
> >>
> >>
> >> > -----Original Message-----
> >> > From: nsrca-discussion-bounces at lists.nsrca.org
> >> > [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of
> >> > Wayne Galligan
> >> > Sent: Sunday, September 24, 2006 8:31 PM
> >> > To: NSRCA Mailing List
> >> > Subject: Re: [NSRCA-discussion] OS 140Rx pump question
> >> >
> >> >
> >> > John,
> >> >
> >> > What pipe? What fuel? What prop are you using?
> >> > Lengthen your pipe till the midrange richness goes away.  My OS
> >> > will do the
> >> > same thing.  The needle on mine is about 3/4 turn out also .  I would
> > not
> >> > mess with the pump till you have tried lengthening the pipe.  This
> > almost
> >> > always fixes that problem.  Less load(smaller prop) on the engine
> > shorten
> >> > pipe, more load(larger prop)lengthen the pipe.
> >> >
> >> > Wayne Galligan
> >> > ----- Original Message -----
> >> > From: "John Pavlick" <jpavlick at idseng.com>
> >> > To: "NSRCA Discussion" <nsrca-discussion at lists.nsrca.org>
> >> > Sent: Sunday, September 24, 2006 12:29 AM
> >> > Subject: [NSRCA-discussion] OS 140Rx pump question
> >> >
> >> >
> >> > > I'm having some trouble with my OS 140Rx and it seems to me that
> >> > > maybe
> >> > > somebody played with the pump (I bought this motor used). Here's
> > what's
> >> > > going on. The main needle wants to be at about 3/4 turns out. Not
> >> > > even
> > a
> >> > > full turn. If I open it to 1 1/4 turns it's slobbering
> rich. The idle
> > is
> >> > > rich even with the adjustment turned fully clockwise. It is
> >> > flyable, but I
> >> > > know something isn't right. This motor also has a
> dual-plug OS head.
> >> > > I
> >> > have
> >> > > an "F" plug in the center and an "8" in the rear. The transition
> >> > > isn't
> >> > > great, especially at about 1/2 throttle. On the ground it will
> > actually
> >> > load
> >> > > up sometimes. In the air it's not so bad but it doesn't sound
> >> > right. If it
> >> > > had a Perry pump I'd back off the pressure and that would
> >> > probably fix it.
> >> > > Like I said, I'm thinking someone played with the pump for whatever
> >> > reason.
> >> > > Is there any way to set it up as it was originally or do I have
> >> > to send it
> >> > > back to the service center?
> >> > >
> >> > > John Pavlick
> >> > > http://www.idseng.com
> >> > >
> >> > > --
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> >> > >
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