[NSRCA-discussion] DC Area Clubs

[Bob Kane]

This is not entirely true . . .  In the case of the DZ
engines, the fuel is injected it at the intake valve. 
But, the metering of the fuel is still done with a
tapered slot in the throttle barrel so a small amount
of raw fuel might leak into the bottom end. Same thing
with the "normal" YS engines, the bulk of the fuel is
squirted into the intake air after it is pressurized,
but some may leak into the intake side of the
crankcase.


--- Bob Richards <bob at toprudder.com> wrote:

> Jim,
>    
>   The YS four-strokes do not depend on blow-by to
> lube the bottom end. The bottom end is actually used
> to supercharge the engine, so the fuel-air (and oil)
> enters the bottom end first before being pumped into
> the top end.
>    
>   Bob R.
>   
> 
> jivey61 at bellsouth.net wrote:
>   Arch
> I would be concerned about the engine 160DZ oiling
> itself at that
> Rpm.Running continous at that rpm there may not be
> enough blow-by to oil the
> lower end,much less push oil to the cam and lifters.
> My experience was with
> a OS40 4S on a put-put around Buzzard Bombshell. I
> replaced mains and cam
> and rockers twice because of oiling problems at low
> rpm. Your engine
> reliability may be a problem.
> Just some thoughts.
> 
> Jim Ivey
> 
> ----- Original Message ----- 
> From: "Arch Stafford" 
> To: "'NSRCA Mailing List'" 
> Sent: Monday, December 19, 2005 7:08 PM
> Subject: RE: [NSRCA-discussion] DC Area Clubs
> 
> 
> > That is actually in the works. We have a total of
> 6 prototypes to build.
> I
> > picked the YS because of fuel delivery, and
> actually fairly low fuel draw
> at
> > low throttle settings. It cruises at about 4000RPM
> and it sips fuel at
> that
> > RPM. There will be at least one more with YS, then
> one or two with
> > electric, one with a DA-50, and then still playing
> with other motors.
> Long
> > term goal in production is a diesel engine, but
> unfortunately not many or
> > any diesels in the HP range with reasonable
> weight.
> >
> > -----Original Message-----
> > From: nsrca-discussion-bounces at lists.nsrca.org
> > [mailto:nsrca-discussion-bounces at lists.nsrca.org]
> On Behalf Of Scott
> > Anderson
> > Sent: Monday, December 19, 2005 6:49 PM
> > To: NSRCA Mailing List
> > Subject: Re: [NSRCA-discussion] DC Area Clubs
> >
> > Arch,
> >
> > Cool looking plane wish it was in Knoxville,TN for
> testing... Hmm YS what
> > about electric ?
> >
> > Scott Anderson
> > D3 AVP
> > ----- Original Message ----- 
> > From: "Arch Stafford" 
> > To: "'NSRCA Mailing List'" 
> > Sent: Monday, December 19, 2005 6:33 PM
> > Subject: [NSRCA-discussion] DC Area Clubs
> >
> >
> > > Guys,
> > >
> > > I need some help. Later this week, Wednesday or
> Thursday I have an
> > > airplane
> > > that we are currently testing for work on, that
> I need to fly for a
> client
> > > of ours who works in the Pentagon. Its purely
> RC, 16' wingspan, weighs
> > > about 25lbs. I need to find a club within 30
> minutes or so of DC that
> we
> > > can fly at. Here are some pics, and a short
> video www.iron-bay.com
> I'll
> > > be happy to let anyone who can help fly it a
> little bit. Basically he
> > > just
> > > wanted to see the airframe perform. Looks like a
> giant hobbico aerobird
> > > basically with a YS 1.60DZ pushing it along.
> > >
> > > Thanks in Advance,
> > >
> > > Arch
> > >
> > >
> > > _______________________________________________
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> > > NSRCA-discussion at lists.nsrca.org
> > >
>
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> >
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> >
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> >
>
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> 
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> 
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Bob Kane
getterflash at yahoo.com

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