Today's Message Index:
----------------------
1. 07:42 AM - Re: Fuselage wing fairing (HINDE,FRANK (HP-Corvallis,ex1))
2. 08:14 AM - High EGT's on Jab 3300 (Schallgren@aol.com)
3. 10:22 AM - Re: Fuselage wing fairing (Gary Gower)
4. 01:01 PM - Re: Fuselage wing fairing (Thilo Kind)
Message 1
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| Subject: | Fuselage wing fairing |
--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Good...and let us know how it works out, particularly what max and cruise
speeds you end up with as measured on your GPS.
Frank
-----Original Message-----
From: Michel Therrien [mailto:mtherr@yahoo.com]
Subject: RE: Zenith-List: Fuselage wing fairing
--> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com>
Yes, the radiator cap is higher than the radiator (but
not by a lot).
Three of my friends have Subaru engines with in-cowl
radiators. They're all happy with their temperatures
although two of them had some difficulty initially
because the intake holes in their cowling were two
small.
The pressure may be higher than what you mention. The
reason is that the cowling must be made so it is a
"pressure cowling". That means that it is sealed all
around (see the problem for the bottom part?) so that
air is forced through the radiator before exiting
underneath the plane. My mentor also told me that the
shape of the cowling at the exit is important so a
turbulence is created, acting like a venturi (or
vacuum?) for the radiator air.
I feel that it is a proven approach now and I don't
think I'm venturing too much in new areas. I expect
it to work as well as it does for my buddies.
Michel
--- "HINDE,FRANK (HP-Corvallis,ex1)"
<frank.hinde@hp.com> wrote:
> --> Zenith-List message posted by: "HINDE,FRANK
> (HP-Corvallis,ex1)" <frank.hinde@hp.com>
>
> Very interesting Michel...
>...
> Did you design this or is it a "try it and see what
> happens" design?
>
=====
----------------------------
Michel Therrien CH601-HD
http://mthobby.pcperfect.com/ch601
http://www.zenithair.com/bldrlist/profiles/mthobby
http://pages.infinit.net/mthobby
http://tax.yahoo.com
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Message 2
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| Subject: | High EGT's on Jab 3300 |
--> Zenith-List message posted by: Schallgren@aol.com
List:
Jerry said "Speaking of egts, my new 3300's egts rip right on past the 1380
limit on
takeoff on my pusher Titan. Is this because of the "throttle valve
turbulence" Kurt speaks of below or something else. At lower cruise RPMs
they are just fine. Any thoughts, ideas, or suggestions are more than
welcome."
We had the same problem on our Number 6 cylinder anytime we were close to
WOT. At the same time we were getting the excessive number 6 readings all
other cylinders were normal. After many conversations with Pete about
possible solutions we did what we should have done at first; namely, swap the
number 6 EGT probe with the number 4 probe. Now the problem is on the
number 4 cylinder so we have a bad probe.
We plan to replace the original number 6 probe the first time we have to work
on something else behind the instrument panel. In the interim we will crank
up the limit on EGT temps to 1450 or above until we no longer get the red
light on our EIS system. We will also record the EGT's/CHT's/oil press/oil
temp in a log for each flight to insure that we are fully aware of the engine
health at all times. By the way the temp/press log is the same as airlines
record on each flight in order to extend the time between engine overhauls.
If you wish any other info Jerry don't hesitate to contact me.
Stan
601 HDS/Jab 3300/96 hours
Message 3
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| Subject: | Re: Fuselage wing fairing |
--> Zenith-List message posted by: Gary Gower <ggower_99@yahoo.com>
We always do a thick paper dummy of all the irregular parts, most of
them fit, but there is always a little trimming to do, this way we save
trashing aluminum.
Saludos
Gary Gower
701 912S
GDL, Mexico
--- Michel Therrien <mtherr@yahoo.com> wrote:
> --> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com>
>
> Hello group,
>
> I am making the 6E1-1 part (fuselage - wing fairing)
> for the 601-HD(S) and I am wondering if I should cut
> it as per the dimensions in the plans or if I have to
> make a carton dummy and test it on the plane until I
> find the true dimensions.
>
> Any advise?
>
> Michel
>
>
> =====
> ----------------------------
> Michel Therrien CH601-HD
> http://mthobby.pcperfect.com/ch601
> http://www.zenithair.com/bldrlist/profiles/mthobby
> http://pages.infinit.net/mthobby
>
> http://tax.yahoo.com
>
>
>
>
>
>
>
>
http://tax.yahoo.com
Message 4
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| Subject: | Re: Fuselage wing fairing |
--> Zenith-List message posted by: "Thilo Kind" <thilo.kind@gmx.net>
Hi folks,
DON'T do the foam method on the fairings. Not a good idea. I did that, using
a small vinyl hose to insert the foam into the fairing. In order to prevent
the fairing from warping I enclosed them in plywood. The plywood stayed on
there for 48 hours; initally everything looked allright. However, a few
days later it got hot, the foam expanded and the fairings looked like beaten
up with a hammer.
Thilo Kind
----- Original Message -----
From: "Randy Stout" <r5t0ut@earthlink.net>
Subject: Re: Zenith-List: Fuselage wing fairing
> --> Zenith-List message posted by: "Randy Stout" <r5t0ut@earthlink.net>
>
> I just re-made mine using Fred's method and really think this is the way
to
> go. It does add a little weight, but I'm not so worried about someone
> stepping on them anymore. Although I wouldn't recommend walking on them, I
> did test the strength by standing on them and they held my 180 lb. butt.
>
> I guess I should tell you why I had to re-make mine... Awhile back there
> was a thread about this and one of the suggestions was to squirt foam into
> the cavity. Composite builders make sandwiches of fiberglass and foam,
which
> makes a very strong structure. The general idea made sense, so why not
give
> it a try? The first problem was trying to get the foam distributed into
the
> cavity. I drilled 2, 3/8" holes to insert the tube into, and tried to poke
> the tube in as far as I could in different directions. It still felt as if
> there were pockets without foam. The second problem was with curing. After
a
> more than a month the foam never completely cured. Every day I would clean
> out the holes in the bottom to relieve the pressure. One warm day the
skins
> began to buckle slightly. That's when I gave up and removed them. One
other
> fear was with the foam collecting water. Since the foam was closed cell
> foam, I didn't think this would be a problem. Unfortunately I couldn't get
> all the cavity filled so there were pockets where water could have
> accumulated.
>
> Randy Stout
> CH 601 HD
> r5t0ut@earthlink.net
> http://www.geocities.com/r5t0ut21/index.html
>
>
> ----- Original Message -----
> From: "Michel Therrien" <mtherr@yahoo.com>
> To: <zenith-list@matronics.com>
> Subject: Re: Zenith-List: Fuselage wing fairing
>
>
> > --> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com>
> >
> > Thanks! I will use a 0.025" skin for this part and I
> > intend to install L stiffeners the same way as Fred
> > Hulen did
> >
(http://homepages.together.net/~billvt/Fairings%20by%20Fred/Fairings.htm)
> >
> > Thanks for the advise.
> >
> > Michel
> >
> > --- Dave Alberti <daberti@execpc.com> wrote:
> > > --> Zenith-List message posted by: "Dave Alberti"
> > > <daberti@execpc.com>
> > >
> > > Mike,
> > > I made posterboard patterns of the shape from the
> > > plans and then test fit to
> > > see how close they were. In my case the Zenith
> > > sizes were larger than my
> > > finished dimensions but the angles were also
> > > slightly different.
> >
> > =====
> > ----------------------------
> > Michel Therrien CH601-HD
> > http://mthobby.pcperfect.com/ch601
> > http://www.zenithair.com/bldrlist/profiles/mthobby
> > http://pages.infinit.net/mthobby
> >
> > http://tax.yahoo.com
> >
> >
>
>
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