Today's Message Index:
----------------------
1. 05:14 AM - Re: 701 Structural differences (Jari Kaija)
2. 05:41 AM - Re: Zenith pre-drilled hole problem. (Aaron Gustafson)
3. 07:09 AM - Re: Fly-in (JAPhillipsGA@aol.com)
4. 07:34 AM - MicroAir antenna (Bob Miller)
5. 08:19 AM - Re: There is Mixture Control on the Rotax 912ULS (Leo Gates)
6. 08:34 AM - Re: Zenith pre-drilled hole problem. (Bill+Rose)
7. 10:07 AM - Re: Corvair Engine (was Cable Ties) (Edward Moody II)
8. 10:33 AM - Offline (zodierocket@hsfx.ca)
9. 01:08 PM - Priming Metal Parts for my CH701 (Jeffrey A Beachy)
10. 01:21 PM - Re: Aileron stiffness and force - XL (AndrewC)
11. 01:57 PM - Re: New Jabiru 3300 EnginesNew Jabiru 3300 Engines (Chuck & Lana Maggart)
12. 02:39 PM - Re: New Jabiru 3300 EnginesNew Jabiru 3300 Engines (Pete Krotje)
13. 04:35 PM - Re: Corvair Engine (was Cable Ties) (Gary Gower)
14. 06:01 PM - Re: MicroAir antenna (Bryan Martin)
15. 07:32 PM - Re: Aileron stiffness and force - XL (David X)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 701 Structural differences |
--> Zenith-List message posted by: "Jari Kaija" <jari.kaija@pp.inet.fi>
> Guess I'm missing something here.
You didn't.
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Zenith pre-drilled hole problem. |
--> Zenith-List message posted by: "Aaron Gustafson" <agustafson@chartermi.net>
Yea!! for the continuing education of kit builders! Scratch builders avoid
all this but lack one important thing. SOMEONE TO PASS THE BUCK TO!
Just a little humor for a Sunday morning.
Aaron do not archive
Original message
> I recently had to scrap an entire wing on my XL.
> My realization after a while is that the holes are
> drilled using perfect assumptions about how the ribs will be located
> on the spar, but as a human being I didn't locate the ribs perfectly
> so the "Perfect" predrilled holes in the skin didn't match my wing
> skeleton.
> I am sure I can drill the holes in a blank skin where they should be to
> match my
> wing skeleton.
> One other think I learned in this whole fiasco is that ZAC doesn't
> make the spars that go in the XL kit - Zenair does. I don't know how
> far this practice goes, but I suspect Zenair (a Canadian company)
> makes all the spars for all the Zenith kits.
>
> but I am having fun building more wings without any reference to the
> instructions.
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Zenith-List message posted by: JAPhillipsGA@aol.com
Gregg, sorry you were not there. We had hundreds of planes and everyone was
looking for you !!! Just kidding. No, we all agreed that Winder is a nice strip
and the Spitfire Cafe does produce an excellent $ 100. hamburger. Hope your
eye gets better soon. You can probably fly better than most of us even with
only one, Best regards, Bill
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | MicroAir antenna |
--> Zenith-List message posted by: "Bob Miller" <tutuzulu@gmail.com>
My quarter-wave antenna has delrin bushings to insulate the antenna
from the airframe, and Aeroelectric Connection states the antenna
should be insulated from the airframe.
Yet, the manual for my MicroAir 760 radio says "For metal skin
aircraft....ensure that the antenna base and the coax shield are
firmly grounded to the skin of the aircraft. Ensure that any
anti-corrosion product, which may be used to seal the exterior
surface, does not isolate the antenna base from the airframe."
Wouldn't this be the same as grounding the shield wire to the antenna?
How have y'all done it?
See you at Sun'nFun.
--
Bob Miller
601HD N722Z
Charlottesville, Virginia
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: There is Mixture Control on the Rotax 912ULS |
--> Zenith-List message posted by: Leo Gates <leogates@allvantage.com>
My 912UL (Uncertified) bought in 1997 has altitude compensating Bing carbs.
Leo Gates
N601Z
Brett Hanley wrote:
>--> Zenith-List message posted by: Brett Hanley <bretttdc@yahoo.com>
>
>There is mixture control on the Rotax 912 series
>engines. This being the second century of flight they
>use automatic altitude compensating carbs. Wow, what
>a novel idea. Only the certified engines are protected
>from technological advancement.
>
>
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Zenith pre-drilled hole problem. |
--> Zenith-List message posted by: "Bill+Rose" <naumuk@alltel.net>
----- Original Message -----
From: "Aaron Gustafson" <agustafson@chartermi.net>
Sent: Sunday, March 19, 2006 8:39 AM
Subject: Re: Zenith-List: Zenith pre-drilled hole problem.
All-
True to Murphy's law, the problem didn't show up until the LAST TWO
HOLES I had to drill in the spar. 3 out of the 4 sets of A6 pilot holes were
located well enough to be usable, but the last two were just out in the
ozones. Considering the correct relationship of all the ribs to one another
and the spar, there is absolutely no way I made a mistake.
Luckily, having two extra holes to fill with A6s isn't a show stopper.
Zenith would probably replace the spar, but look at all the work I'd have to
redo.
What grates on me most is if you spend over $1000.00 on anything, you
expect it to be usable without having to rework it. If a person bought a
$100 wheel for his car and he had to redrill the hole pattern so it would
fit over the studs, he'd scream bloody murder. Having bought one of the last
HDS kits, I just can't shake the feeling that Zenith was concentrating on
the XL and someone buying an older model was just an annoyance.
As far as Can-Zac manufacturing the spars, so what? This looks like a
production fixturing problem to me. Perhaps the wrong fixture for the
aircraft variation was used, or the fixture moved (Most likely the latter).
You can speculate forever, or you can move on.
Bought the new Homebuilt Help DVD someone recommended on building a
Zenith from scratch. Kind of interesting to find out how to do something
after you've already done it. Would have saved me some time I spent
experimenting to come up with a work procedure. Worth $39.
My Zenith rivet gun is on it's last legs, so I bought 5/32 and 7/32
carbide ball mills and the cheapest Harbor Freight rivet gun and had at it.
You only need the 7/32 (About $11 US) and a drill press. The Harbor Freight
gun is better than the Zenith for pulling A5s, but not A4 or A6. Almost
bought a top of the line Master Mechanic puller ($20 US) but didn't know how
milling the anvils would turn out and didn't want to trash a perfectly good
tool. Will get one after the Zenith puller finally dies. (Holes between the
handles are worn elliptical).
Bill
>
>
>
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Corvair Engine (was Cable Ties) |
--> Zenith-List message posted by: "Edward Moody II" <dredmoody@cox.net>
Man, am I ever sorry that I opened a can of worms about the Corvair engine.
In the future, I will pass on making any remark that might set off a storm
of defense of choice.
Sincere apologies,
Ed Moody II
Do Not Archive
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Zenith-List message posted by: zodierocket@hsfx.ca
Hi Guys, for those who sent mail to me, they have been recieved on my
server but as of yet due to server problems I have not been able to read
anything. Keep the BBQ registrations comming if you plan to attend. For
those of you waiting for a reply from me, I hope to be back online by Wed.
Thanks
Mark Townsend
do not archive
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Priming Metal Parts for my CH701 |
--> Zenith-List message posted by: Jeffrey A Beachy <beachyjeff@juno.com>
For aluminum parts, I have been using Metal Prep No. 79 followed by Zinc
Chromate from aerosol cans. Now I have started building my fuselage and
just completed the firewall, which is my first exposure to steel. Do I
treat the firewall and the 4130 steel tubes the same way as the aluminum?
I had someone advise me to powdercoat the metal parts, but the archives
seem to suggest otherwise. Also, with the 4130 steel tubes, I presume I
need to rust proof both the inside and the outside? What about around the
drilled holes? Prime only after drilling is completed?
I am certainly learning a lot from building my first airplane and have
greatly appreciated the information from this list. Thanks in advance!
Jeff Beachy
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Aileron stiffness and force - XL |
--> Zenith-List message posted by: "AndrewC" <andrewgcampbell@tiscali.co.uk>
Thanks again for all the postings on this topic. They were all very helpful and
I've now finished the test schedule and the problem is now almost gone (or at
least within acceptable limits).
It looks as though the source of the problem is that my right wing is generating
slightly more lift than the left one. There are two possible cuplrits: one
flap appears to be a couple of millimetres lower than the other (no guesses for
which side) and there may be a slight twist in the wing but I'll be checking
that shortly with my digital protractor at each rib and comparing the same points
on each wing. Wing incidence seems to be okay otherwise. Lubrication merely
helped the ailerons find their balance; right aileron naturally falls, presumably
the weight of the trim servo etc on that aileron. In flight the forces
were still the same though so at least it was aerodynamic and we've solved
it by adjusting the turnbuckles so both ailerons are equal to the level of the
flaps. The plans show the flaps should protrude above the airflow by around
3mm, so that's where the ailerons are now with stick centred and the forces are
much reduced. Also the aileron trim is now back towards the middle in level
flight too.
The rudder pedal rods will also be adjusted a couple of turns to give a little
bit left rudder when pedals are equal - the ball wasn't quite centred in straight
and level flight.
Performance figures are a little on the disappointing side for me though. I had
hoped to be within 10 knots of the oft quoted cruise speed of 120 knots. No
such luck. 75% cruise at 5000rpm on the Rotax 912ULS gives around 95 knots around
1000feet. TAS at 5000 feet with more power came out at around 110 knots.
I've no intention of flying at max continuous, as I like my engine, so looks
like I'll have to settle for 100 knot 80% cruise. At least she flies...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=22675#22675
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: New Jabiru 3300 EnginesNew Jabiru 3300 Engines |
--> Zenith-List message posted by: "Chuck & Lana Maggart" <cmaggart@sprintmail.com>
Pete, can the new hydraulic lifters be retrofitted to the earlier engines with
manual lifters?
Chuck Maggart, XL
nearly ready to install Jabiru engine
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | New Jabiru 3300 EnginesNew Jabiru 3300 Engines |
--> Zenith-List message posted by: "Pete Krotje" <pete@usjabiru.com>
Sorry Chuck,
It is not possible to retrofit the hydraulic lifters to older engines.
Pete
-----Original Message-----
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of Chuck & Lana
Maggart
Sent: Sunday, March 19, 2006 3:55 PM
Subject: Re: Zenith-List: New Jabiru 3300 EnginesNew Jabiru 3300 Engines
--> Zenith-List message posted by: "Chuck & Lana Maggart"
<cmaggart@sprintmail.com>
Pete, can the new hydraulic lifters be retrofitted to the earlier engines
with manual lifters?
Chuck Maggart, XL
nearly ready to install Jabiru engine
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Corvair Engine (was Cable Ties) |
--> Zenith-List message posted by: Gary Gower <ggower_99@yahoo.com>
Sorry Paul, have to say this, no offense intended.
Not looking at the "idiot" light of the generator in time, dose not makes a "bad"
engine.
Scanning the instruments (and knowing what is wrong) is important to save an
engine, in any car or airplane.
Hope you scan your instruments when you fly, without that, even a Rolls Royce
Merlin Engine will blow :-)
What brand of car do you advise that will allow driving without the fan belt?
:-) :-)
(now water pump belt, with the use of electric fans)
Saludos
Gary Gower
Paul Mulwitz <p.mulwitz@worldnet.att.net> wrote:
--> Zenith-List message posted by: Paul Mulwitz
Perhaps I am a little bit confused by this whole issue.
I thought the Corvair engines were all manufactured over 40 years
ago. I also know the only one I ever drove in a car burned up when
the fan belt broke at an Interstate Toll Booth. Lately, it seems
like the crank shafts on these engines have been developing cracks.
So, how is it that these engines are chosen for
reliability/longevity? What engine are they superior to in this quality?
Paul
XL wings
>I think many builders have chosen the Corvair for reliability/longevity,
>with the econony part just being a nice bonus reward for rolling their own.
>
>Do not archive.
---------------------------------
Use Photomail to share photos without annoying attachments.
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: MicroAir antenna |
--> Zenith-List message posted by: Bryan Martin <bryanmmartin@comcast.net>
A quarter wave whip antenna needs a good ground plane to operate
effectively. The shield conductor on a quarter wave whip antenna must be
grounded at both ends, on the antenna end it must be grounded to a good
ground plane. Most manufactured antennas have a metal base that the outer
shell of the antenna connector is attatched to. In order to ensure that the
shield is grounded, this metal base must be grounded. The actual radiating
element inside the antenna assembly is connected to the center conductor of
the antenna cable and isolated from the shell. The radiating element must
not be grounded.
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive.
> --> Zenith-List message posted by: "Bob Miller" <tutuzulu@gmail.com>
>
> My quarter-wave antenna has delrin bushings to insulate the antenna
> from the airframe, and Aeroelectric Connection states the antenna
> should be insulated from the airframe.
>
> Yet, the manual for my MicroAir 760 radio says "For metal skin
> aircraft....ensure that the antenna base and the coax shield are
> firmly grounded to the skin of the aircraft. Ensure that any
> anti-corrosion product, which may be used to seal the exterior
> surface, does not isolate the antenna base from the airframe."
>
> Wouldn't this be the same as grounding the shield wire to the antenna?
>
> How have y'all done it?
>
> See you at Sun'nFun.
>
> --
> Bob Miller
> 601HD N722Z
> Charlottesville, Virginia
>
>
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Aileron stiffness and force - XL |
--> Zenith-List message posted by: "David X" <dxj@comcast.net>
I have a woodcomp 3-blade on my 912USL, I set the pitch to 17 degrees to top out
at about 130 MPH. 15 degrees yields 115 MPG. 13 degrees yields best climb, less
p-factor tendancy, but maxes out at about 100 MPH.
I also noticed a tendency for the aircraft to turn left excessively. I thought
it was my ailerons or a heavy wing, but turns out that it's my fat ass. Try flying
with left tank near empty, right tank near full. Maybe it won't help, but
it's easy enough to try.
--------
Zodiac 601 XL - CZAW Built - Rotax 912S
DO NOT ARCHIVE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=22764#22764
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|