MC carb for Webra

[Brian Billings]

That is from the center of the glow plug to the end of the large portion of
the pipe, does not include the stinger. Not sure where the first baffle is
located at.
----- Original Message -----
From: "Jerry Budd" <jbudd at QNET.COM>
To: <discussion at nsrca.org>
Sent: Thursday, June 05, 2003 10:09 AM
Subject: Re: MC carb for Webra


>   Brian,
>
> The 31.5" pipe length you quote, what is that from?  In other words
> what is the distance from the plug to the first baffle in the pipe?
>
> Jerry
>
> >    Jerry, my setup is as follows: Webra 145 red head, greve pipe at
31.5",
> >os typeF plug, cool power 15%, APC 17*12, 10lb. 2oz. Prophecy. Current
> >settings on engine are 1 turn on high speed needle, 1 1/16 on low speed
> >needle. I am guessing low 8k for top end rpm on the ground slightly rich
> >{have not tached the 17*12 but I was getting high 8600 or so with 17*10.
> >Engine starts good and idles reliably but transition is not very
linerier.
> >In flight it sounds good with straight and level flight at a little less
> >than half throttle, when pulling to a 45 up line it sags momentarily but
> >recovers, on tall verticals or loops it will sag toward the top and loose
> >roughly 1\2 of it's rpm and that is with me adding throttle through the
> >maneuver, engine with not regain good power unless you go to at least 3\4
or
> >better with throttle. I get no smoke trail out of engine until full
throttle
> >and oil out of the pipe is pretty dark but not black, top third of piston
> >and ring is black like cyl. temps have been high. Condition is better
with
> >low speed needle set richer but it's easy to flood on start ups and is
hard
> >to keep running when cold {must keep a very fast Idle speed until your in
> >the air}. I have found trash in the pump and pump screws came loose
twice,
> >last week I pulled pump apart again and no trash was found but screws
where
> >loose, I cleaned all parts in warm water and dish soap, removed tank and
> >cleaned, ran large fuel tubing from clunk to carb. All fuel is filtered
from
> >the jug and I have a filter between tank and pump. That is about all I
can
> >think of, any suggestions would be greatly appreciated.
> >----- Original Message -----
> >From: "Jerry Budd" <jbudd at QNET.COM>
> >To: <discussion at nsrca.org>
> >Sent: Thursday, June 05, 2003 12:32 AM
> >Subject: Re: MC carb for Webra
> >
> >
> >>  Hi Brian,
> >>
> >>  What's your setup?  i.e. pipe & length, plug, prop, fuel, airplane
> >>  (including weight), rpm's, etc.
> >>
> >>  The reason I'm asking is I've got quite a bit of experience with the
> >>  Webra's (including the MC carb) and I may be able to suggest some
> >>  work arounds until the MC is available again via Horizon (I'm
> >>  guessing but they probably underestimated the demand for the carb and
> >>  got caught short on stock).
> >>
> >>  Jerry
> >>
> >>  >Sounds interesting Jim, let me know how it works out. Mine is
> >>  >driving me crazy, I have it running ok right now but it is kind of
> >>  >off and on type of power. I have been flying her but I know it is
> >>  >not right, still managed to get a gallon through it sunday with easy
> >>  >starts good reliability but as far as uplines go it is either all or
> >>  >nothing, no middle.
> >>  >
> >>  >----- Original Message -----
> >>  >From: <mailto:jivey61 at msn.com>jim ivey
> >>  >To: <mailto:discussion at nsrca.org>discussion
> >>  >Sent: Wednesday, June 04, 2003 10:30 PM
> >>  >Subject: Re: MC carb for Webra
> >>  >
> >>  >Brian
> >>  >I put a cline regulator, a regular back plate with a press. tap, and
> >>  >pressurized the tank on my Webra. The ground runs have been more
> >>  >stable for throttle position The needles are a lot less sensitive
> >>  >and it doesn't seem to be fat in the middle.
> >>  >When I find some time to fly I think it will finally run good. I
> >>  >must have had a pump problem because too many people are running
> >>  >this engine. I did find a piece of foreign material in the pump.
> >>  >This was in the pump from day one. I used a YS filter and nuttin'
> >>  >gets through a YS filter.
> >>  >Will let you know when I fly it, how it does.
> >>  >
> >>  >Jim Ivey
> >>  >
> >>  >
> >>  >----- Original Message -----
> >>  >From: Brian Billings
> >>  >Sent: Wednesday, June 04, 2003 2:10 PM
> >>  >To: discussion at nsrca.org
> >>  >Subject: Re: MC carb for Webra
> >>  >
> >>  >Thanks Tony, that is what I thought.
> >>  >
> >>  >----- Original Message -----
> >>  >From: <mailto:tony at radiosouthrc.com>Tony Stillman
> >>  >To: <mailto:discussion at nsrca.org>discussion at nsrca.org
> >>  >Sent: Wednesday, June 04, 2003 9:45 AM
> >>  >Subject: Re: MC carb for Webra
> >  > >
> >>  >Brian:
> >>  >
> >>  >Horizon is the USA importer for Webra, so if they are out, you
> >>  >probably won't find one.  The only other answer is to go direct to
> >>  >Webra in Europe.
> >>  >
> >>  >Tony Stillman
> >>  >Radio South
> >>  >3702 N. Pace Blvd.
> >>  >Pensacola, FL 32505
> >>  >1-800-962-7802
> >>  ><http://www.radiosouthrc.com/>www.radiosouthrc.com
> >>  >
> >>  >----- Original Message -----
> >>  >From: <mailto:auto7832 at bellsouth.net>Brian Billings
> >>  >To: <mailto:discussion at nsrca.org>discussion at nsrca.org
> >>  >Sent: Tuesday, June 03, 2003 8:29 PM
> >>  >Subject: MC carb for Webra
> >>  >
> >>  >Does anyone know where I can buy the Webra MC carb, Horizon shows
> >>  >them on their website but they don't have any in stock and where
> >>  >unable to tell me when they would. Thanks in advance
> >>  >
> >>  >Brian Billings
> >>
> >>
> >>  --
> >>  ___________
> >>  Jerry Budd
> >>  mailto:jbudd at qnet.com
> >>  =====================================
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> >>  # discussion-request at nsrca.org
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> >>  #
> >>
> >
> >
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>
> --
> ___________
> Jerry Budd
> mailto:jbudd at qnet.com
> =====================================
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