webra 160 - meticulously clean
Jim Ivey
jivey61 at bellsouth.net
Tue Oct 19 10:33:08 AKDT 2004
Keith
The plate was made to the same form as the header attach plate,a spacer so to speak.I used the header attach plate as a template.The exhaust hole was milled to the same dimension as the exhaust port.Through holes were drilled to allow for the longer screws to bolt to the exhaust port.
It was made out of aluminum and started out as a 3/8 thick piece and tapered in thickness, as necessary, to align the header and pipe through the tunnel.No
more heating and bending and kinking the header pipe.
My dig camera doesn't work or I could send some pics.
Hope this helps
Jim Ivey
>
> From: "Keith Black" <tkeithb at comcast.net>
> Date: 2004/10/19 Tue PM 01:59:04 EDT
> To: <discussion at nsrca.org>
> Subject: Re: Re: webra 160 - meticulously clean
>
> Let's see if I understand you correctly. Are you saying you added a new
> piece of metal between the exhaust port and the header and then filed that
> metal to the correct angle? Like an angled shim?
>
> If so, what did you make the plate/shim out of? Also, did it go all the way
> around the exhaust port?
>
> Keith Black
>
>
>
> ----- Original Message -----
> From: "Jim Ivey" <jivey61 at bellsouth.net>
> To: <discussion at nsrca.org>
> Sent: Tuesday, October 19, 2004 11:48 AM
> Subject: Re: Re: webra 160 - meticulously clean
>
>
> > Keith
> > I made a plate adapter,for my Webra 145, for the header to head and
> beveled the adapter to the correct angle for clearance through the tunnel.
> Just had to use longer screws. Works good, lasts long time.
> >
> > Jim Ivey
> > >
> > > From: "Keith Black" <tkeithb at comcast.net>
> > > Date: 2004/10/19 Tue AM 11:39:47 EDT
> > > To: <discussion at nsrca.org>
> > > Subject: Re: webra 160 - meticulously clean
> > >
> > > Karl Mueller told me an interesting way to change the position (height
> or side to side) of a header without bending the header itself. Sand the
> flange to change the angle that the header
> > > mounts up against the exhaust stack of the engine.
> > >
> > > I was able to use this approach to raise the output end of a header by
> about 3/8" to clear my landing gear.
> > >
> > > Keith Black
> > >
> > >
> > > ----- Original Message -----
> > > From: Jim_Woodward at beaerospace.com
> > > To: discussion at nsrca.org
> > > Sent: Tuesday, October 19, 2004 9:40 AM
> > > Subject: RE: webra 160 - meticulously clean
> > >
> > >
> > >
> > > Hi Tony,
> > >
> > > I hope you are doing well in Phoenix. I purchased and used the
> Johnson header that Central sells and used it at the 23.5" dimension. The
> engine ran perfectly on the ground, but did not idle down in flight, or for
> landing, like the 160 I have on the MACs setup (24.25" to first baffle).
> This header broke within less than 10 flights. The pipe portion broke
> cleanly off around the weld joint. In a bind (right before the Apopka
> contest), I went to a marine store and had them re-weld the header. After
> the repair, the header broke again (6 or so flights), but this time about
> 1.0" above the weld. I then ordered the MACs header as I have used
> previously on 1.45s and one 160. Central hobbies was very gracious and
> replaced the Johnson header with a Hatori steel header, which at this point
> I have not used. The Hatori is shorter than the Johnson header.
> > >
> > > Then, the old and much used MACs header I had on the Lazuite broke!
> Good thing I ordered two MACs headers. At this point each MACs header has
> been working fine. Jim Ivey, Ken B., and I bent one of the MACs headers the
> night before the Apopka contest in the hotel room by blocking the header in
> certain positions and using a hammer ting it in place. Actually, it doesn't
> look that bad, fits perfectly, and definitely beats trying to use a torch to
> heat up the header and then bend somehow (which we tried at first).
> > >
> > > Thanks,
> > > Jim W.
> > >
> > >
> > >
> > >
> > > "Tony Quist" <quist23 at cox.net>
> > > Sent by: discussion-request at nsrca.org
> > > 10/19/2004 10:21 AM
> > > Please respond to discussion
> > >
> > >
> > > To: <discussion at nsrca.org>
> > > cc:
> > > Subject: RE: webra 160 - meticulously clean
> > >
> > >
> > >
> > > Jim,
> > >
> > >
> > > Are you running the Johnson header that Central Hobbies sells? If so
> what length are you running it. I saw that Matt K was running 24 inches to
> the first baffle. My header at full length only gives me 23.5 inches.
> > >
> > >
> > >
> > > I have test run the engine and there are leaks where you say. I will
> rtv the areas and put hose clamps on the coupler.
> > >
> > >
> > >
> > > Tony Quist
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: discussion-request at nsrca.org
> [mailto:discussion-request at nsrca.org] On Behalf Of
> Jim_Woodward at beaerospace.com
> > > Sent: Tuesday, October 19, 2004 7:09 AM
> > > To: discussion at nsrca.org
> > > Subject: RE: webra 160 - meticulously clean
> > >
> > >
> > >
> > >
> > > I installed one headshim in the two Webra 160 (Aggressor and
> Lazulite). I did not notice any difference in running, nor a compression
> reduction.
> > >
> > > Also, I've gotten mine to be meticulously clean while running. After
> a day's flying, there is almost no need to clean the plane. Simple, but
> with some routine checks here are the steps:
> > > 1. Use RTV between the header and engine (check or redue once a month
> if residue develops on plane)
> > > 2. Ensure all bolts are tight (no lie) (engine will still run with
> loose headbolt)
> > > 3. Header & Pipe coupler: I found zip ties to not adequately seal
> the silicone coupler. For instance, if you examine the plane and there is
> exhuast residue on the plane before the stinger, then you have a leak
> somewhere. After installing small hose clamps, and checking every so often,
> there is no "exhaust" residue before the actual exhaust stinger.
> > > 4. Pinch or disconnect fuel line: If you pinch the fuel line in
> between flights, or just plug the line, there will be little to few fuel
> drops exiting the carburetor while the plane is sitting.
> > > 5. Run exhaust stinger extension:
> > >
> > > Thanks,
> > > Jim W.
> > >
> > >
> > >
> > >
> > > "Joe Lachowski" <jlachow at hotmail.com>
> > > Sent by: discussion-request at nsrca.org
> > > 10/19/2004 09:52 AM
> > > Please respond to discussion
> > >
> > > To: discussion at nsrca.org
> > > cc:
> > > Subject: RE: webra 160
> > >
> > >
> > >
> > >
> > >
> > > Motor does not come with head shim. Got 3 motors that way. I haven't
> had a
> > > need to use them either.
> > >
> > > >From: "George Kolotouros" <georgeman4 at cox.net>
> > > >Reply-To: discussion at nsrca.org
> > > >To: <discussion at nsrca.org>
> > > >CC: "George Kolotouros" <georgeman4 at cox.net>
> > > >Subject: webra 160
> > > >Date: Mon, 18 Oct 2004 18:54:56 -0700
> > > >
> > > >Hello everyone, been having some problems with my new webra. I
> finally have
> > > >the proper length on my es 160 pipe. 24in from plug to first
> > > >baffle. played with the mixture. Put it in the air. High speed is
> lean
> > > >richened it a few % on my radio. Later when I got home I decided to
> pull
> > > >the head to look at the top of the piston. Looks fine, found out I
> dont
> > > >have a head gasket. There parts breakdown shows that ther is one.
> What
> > > >gives? George Kolotouros
> > >
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