[SPAM] Re: Re: Webra Problem

[Brian Young]

Just a thought on measuring the pump pressure. I
talked to John Fink (hope I got the name right, from
Denver area) who was having problems w/ setup on a
1.60. He discussed measuring the pump pressure by
installing a T in the line between the carb and the
pump then ran a length of tubing up the wall. The
pressure will push the fluid up the line, I cant
remember how many inches of fuel he wound up with to
get the engine running right.

I repeated the procedure on mine and found it to work
well for measuring pressure, again I cant remember how
high the column was. This is easier than a low
pressure gage and anyone can do it, you can convert to
psi if you choose.


--- jivey61 at bellsouth.net wrote:
>   Hey guys
>  I can't beleive as much as we have had pump
> problems no one has put a pressure gage on a good
> running Webra to see exactly what the pump pressure
> is. I include myself here because I had many
> problems with my Webra. I only solved my problem
> with a cline regulater and tank pressure.
> If we knew what this pressure was we could compare a
> poor running engine with a good one. Also this would
> give you a benchmark to start your setup on a new
> engine. Just some tho'ts for Webra people.
> 
> Jim Ivey
> 
> > 
> > From: "Randy" <randy10926 at comcast.net>
> > Date: 2004/06/10 Thu PM 11:01:44 EDT
> > To: <discussion at nsrca.org>
> > Subject: Re: Webra Problem
> > 
> > I got the engine new used last year.  It ia a AAR.
>  Did not fly that much last year; but the engine
> mostly ran well.  Sometime go a little rich and lose
> a little vertical.  Has been less reliable this year
> after the winter.
> > 
> > Throttle up before vertical and bogges part way up
> about half the time.replaced fuel tank earlier this
> week.  Turned pump pressure in one turn today.  Have
> high end around 3 turns out.  I see smoke on the
> ground, but much in the air.  Seem to bog more on
> the latter half of the tank.  Moved tank to just in
> front of wing tube to shorten line to pump;but did
> not see any change.
> > 
> > No idea how many flights before I got it, but not
> that many as owner decided to stay with OS 140.
> > 
> > I am going to clean carb out in the morning.  And
> check to see if the pump pressure is at four
> threads.
> > 
> > Randy
> > 
> >   ----- Original Message ----- 
> >   From: Keith Black 
> >   To: discussion at nsrca.org 
> >   Sent: Wednesday, June 09, 2004 2:12 PM
> >   Subject: Re: Webra Problem
> > 
> > 
> >   Randy, 
> > 
> >   Is the Webra new (or new to you)?
> > 
> >   Has it been running well and now it's not doing
> so well or has it always had problems?
> > 
> >   Has the pump ever been adjusted since it was
> new?
> > 
> >   When loosing power on the uplines is it wide
> open then bogging down after being in the upline for
> a while, or are you increasing throttle while in the
> upline and then it's coughing?
> > 
> >   How much smoke does it blow when wide open in
> level flight?
> > 
> >   How many flights do the bearings have on them?
> > 
> >   Keith Black
> > 
> >     ----- Original Message ----- 
> >     From: Randy 
> >     To: discussion at nsrca.org 
> >     Sent: Wednesday, June 09, 2004 12:55 PM
> >     Subject: Webra Problem
> > 
> > 
> >     My webra 145 with a normal carbo seems to be
> losing power on the up lines.  It seems to me that
> the pump should delive a near constant flow of fuel.
>  So I should not need to have is real rich on the
> high end to handle the up lines.  But still losing
> power on uplines, so have been richening it.
> > 
> >     Low end seems fine.
> > 
> 
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