Today's Message Index:
----------------------
1. 04:44 AM - Endorsement (Lowell Metz)
2. 08:27 AM - Re: 601 Canopies....an alternative source (Rick)
3. 08:34 AM - Zodiac photos, photocamera mounting (Dr. Bajusz Huba)
4. 08:40 AM - Re: Wiring diagram downloads? (Rick)
5. 08:48 AM - Zodiac photos, photocamera mounting (Dr. Bajusz Huba)
6. 11:48 AM - Re: Wiring diagram downloads? (ac6qj@earthlink.net)
7. 12:18 PM - Stratus Valve guide failures (HINDE,FRANK (HP-Corvallis,ex1))
8. 01:39 PM - Re: Stratus Valve guide failures (Larry C. McFarland)
9. 02:23 PM - Re: Stratus Valve guide failures (HINDE,FRANK (HP-Corvallis,ex1))
10. 02:30 PM - Re: Stratus Valve guide failures (The Meiste's)
11. 03:01 PM - Re: Stratus Valve guide failures (Don Walker)
12. 03:07 PM - Re: Stratus Valve guide failures (HINDE,FRANK (HP-Corvallis,ex1))
13. 03:09 PM - Re: Stratus Valve guide failures (Don Walker)
14. 03:33 PM - Re: Stratus Valve guide failures (HINDE,FRANK (HP-Corvallis,ex1))
15. 03:34 PM - Re: Stratus Valve guide failures (David & Maria Lumgair)
16. 03:35 PM - Re: Stratus Valve guide failures (HINDE,FRANK (HP-Corvallis,ex1))
17. 03:42 PM - 701 cowl questions (mike sinclair)
18. 03:44 PM - Sebastian to be on Kitplane Radio (Gig Giacona)
19. 05:14 PM - Re: Stratus Valve guide failures (Bill Cardell)
20. 05:36 PM - Re: Stratus Valve guide failures (Dave Alberti)
21. 05:49 PM - Re: Stratus Valve guide failures (Don Walker)
22. 06:10 PM - Re: Stratus Valve guide failures (David & Maria Lumgair)
23. 06:41 PM - Re: Stratus Valve guide failures (The Meiste's)
24. 06:52 PM - Re: Re: Stratus Valve guide failures (Michael Stempf)
25. 06:55 PM - Re: Stratus Valve guide failures (jackie b johnson)
26. 07:04 PM - Re: Stratus Valve guide failures (STEFREE@aol.com)
27. 07:29 PM - Re: Re: Stratus Valve guide failures (Phil Maxson)
28. 07:32 PM - Re: Stratus Valve guide failures (David & Maria Lumgair)
29. 08:21 PM - Re: Stratus Valve guide failures (Don Walker)
30. 08:27 PM - Re: Stratus Valve guide failures (Don Walker)
Message 1
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--> Zenith-List message posted by: Lowell Metz <lowellmetz@earthlink.net>
This is not an ad but certainly and endorsement for some fine folks I met
. Yesterday I drove over to Stuart FL. and met Danny of SKYSHOP Inc. I
purchased a 912U/LS and cowl for my 701 was impressed with his operation
and the availability of ZAC " stuff " with a nice
savings. Visit www.skyshops.org
I also ogled over a nice 801 and 601 XL and a pair of beautiful
floats.
Lowell Metz 701
Do Not Archive
Message 2
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| Subject: | Re: 601 Canopies....an alternative source |
--> Zenith-List message posted by: Rick <rick.pitcher@verizon.net>
Pete Ferguson wrote:
>
> --> Zenith-List message posted by: "Pete Ferguson" <pfergus2@tampabay.rr.com
(spam)>
>
> Here's a link to a new source of 601 canopies. The panel lighting stuff
> looks pretty neat also......
>
> http://www.aircraftextras.com/
Thanks Pete, excellent timing!
I checked them out and decided to buy my canopy from them. They are a
couple hundred bucks less than ZAC, and NO STINKING CRATING FEES!
(sorry, didn't mean to shout)
I'll let you guys know how it looks when it gets here.
Rick
building rudder pedals and waiting for canopy.
Message 3
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| Subject: | Zodiac photos, photocamera mounting |
--> Zenith-List message posted by: "Dr. Bajusz Huba" <bajuszdr@deltav.hu>
Dear List,
Thanks to everybody for the nice words about my photos:
( http://www.ultralight.hu/zodiac601/zkepgaleria.htm )
There was such a big interest on this topic that I try to answer more
detailed together.
It is very easy to make a hard attachment point on the wingtip and on the
tail for the photocamera.
It is only a doubler and two nuts (6 mm) under the skin.
And I can fix to this hard attachment point several small tripodhead to
adjust the camera.
(MHO) the best to have a lightweight digital camera with remote control
and with 28mm wide angle converter lens.
Tele-lenses are not useful in the air at all.
I have tried several cameras.
I had earlier an Olympus C2500.
Most of the picts were taken with this camera.
Now I have a Canon G2 with wide angle adapter lens.
This camera kit comes with a remote control as well.
I use manualfocus, aperture priority (8.0 or 11) settings and serial
shutting mode.
With a 128 Mb card I can have far enough picts to find a good one in the
series.
The nice words of the list inspires me to create a better aerophoto site
and to share a larger collection off my pictures.
I fly a lot other planes and even delta-trikes as well.
I will let you know as soon as this site is ready.
I hope I inspired you to take unusual aeroshots.
Sometimes it takes me hours and several trials in the air to shot the frame
I expected.
I wish you to enjoy this type of additional (airphoto)game beside flying.
After several months you will always watch the spectacular view with the
searching eye of a photographer.
And you will remember more details of the country underneath.
Huba Bajusz
Hungary, Europe
Message 4
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| Subject: | Re: Wiring diagram downloads? |
--> Zenith-List message posted by: Rick <rick.pitcher@verizon.net>
WOW!!!
Thanks to all who posted and sent private emails. I have the diagrams
for the transponder and the comm radio now. What a pleasure to deal
with all you guys :)
Ray: Yes, I think the Aerosonic encoding altimeter is the 1016. I
haven't received it yet, but the ser.# starts with 1016. If you have the
pinouts for that model I'd love to have a look at them
thanks all,
Rick
doing wiring diagrams
Message 5
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| Subject: | Zodiac photos, photocamera mounting |
--> Zenith-List message posted by: "Dr. Bajusz Huba" <bajuszdr@deltav.hu>
Dear List,
Thanks to everybody for the nice words about my photos:
( http://www.ultralight.hu/zodiac601/zkepgaleria.htm )
There was such a big interest on this topic that I try to answer more
detailed together.
It is very easy to make a hard attachment point on the wingtip and on the
tail for the photocamera.
It is only a doubler and two nuts (6 mm) under the skin.
And I can fix to this hard attachment point several small tripodhead to
adjust the camera.
(MHO) the best to have a lightweight digital camera with remote control
and with 28mm wide angle converter lens.
Tele-lenses are not useful in the air at all.
I have tried several cameras.
I had earlier an Olympus C2500.
Most of the picts were taken with this camera.
Now I have a Canon G2 with wide angle adapter lens.
(Probably the new G3 is even better)
This camera kits come with a remote control as well.
I use manualfocus, aperture priority (8.0 or 11) settings.
I like to use the serial shutting mode on this camera.
It makes 4 serial pictures by every shot.
With a 128 Mb card I can have far enough picts to find a good one in the
serie of the day.
The nice words of the list inspires me to create a better aerophoto site
and to share a larger collection off my pictures.
I fly a lot other planes and even delta-trikes as well.
I will let you know as soon as this site is ready.
I hope I inspired you to take unusual aeroshots.
Sometimes it takes me hours and several trials in the air to shot the frame
I expected.
I wish you to enjoy this type of additional (airphoto)game beside flying.
After several months you will always watch the spectacular view with the
searching eye of a photographer.
And you will remember more details of the country underneath.
>From Grant Corriveau
>I would be interested to see some photos under the cowling of your
>engine/radiator arrangements - possible?
I try to find some earlier photos for you.
Now our airport is covered with huge snow
and I dont like to work in the cold hangar.
>"Jeff Small" <zodiacjeff@msn.com>
>Your photos are spectacular! Is it an effect
>of the wide angle, fisheye lens, or have you shortened the wingspan a bit
>from the original (plans) 27 feet.
You have very good eyes to photos :)
Yes, we have shortened both wings about one feet.
Huba Bajusz
Hungary, Europe
Message 6
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| Subject: | Re: Wiring diagram downloads? |
--> Zenith-List message posted by: ac6qj@earthlink.net
>--> Zenith-List message posted by: Rick <rick.pitcher@verizon.net>
>
>
>WOW!!!
>Thanks to all who posted and sent private emails. I have the diagrams
>for the transponder and the comm radio now. What a pleasure to deal
>with all you guys :)
>
>Ray: Yes, I think the Aerosonic encoding altimeter is the 1016. I
>haven't received it yet, but the ser.# starts with 1016. If you have the
>pinouts for that model I'd love to have a look at them
>
>thanks all,
>Rick
>doing wiring diagrams
>
Hi Rick,
Here's the pin out for the Aerosonic Corp Model 1014 & 1016:
+14 Volts DC ................. B
+28 Volts DC ................. A
A1 ......................... F
A2 ......................... G
A4 ......................... H
B1 ......................... J
B2 ......................... K
B4 ......................... L
C1 ......................... M
C2 ......................... N
C4 ......................... P
D4 ......................... E
GROUND ......................... R
STROBE / SIG. COM. ......... C
A note indicates "Not compatible with Aeromech encoders".
DO NOT ARCHIVE
--
Best regards, Ray Montagne
Cupertino, CA
Message 7
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| Subject: | Stratus Valve guide failures |
--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Hi all,
I just had a failure of one of Stratus's valve guides in my engine. This is
the new style Phosphor bronze guides with a retaining clip.
Stratus tells me I am the only failure they know about with this new style
of guide. I wanted to see if there were any others out there to see if there
is more of a problem?
Thanks
Frank
Message 8
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "Larry C. McFarland" <larrymc@qconline.com>
Frank,
Was the failure the result of the guide or modification
of the valve? Did it do damage to anything else?
Larry C. McFarland -
Do Not Archive
> --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
<frank.hinde@hp.com>
>
> Hi all,
>
> I just had a failure of one of Stratus's valve guides in my engine. This
is
> the new style Phosphor bronze guides with a retaining clip.
>
> Stratus tells me I am the only failure they know about with this new style
> of guide. I wanted to see if there were any others out there to see if
there
> is more of a problem?
>
> Thanks
>
> Frank
Message 9
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| Subject: | Stratus Valve guide failures |
--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Hi Larry,
Oh it always (this is the third time!) does damage to the pistons, If your
lucky it won't destroy your entire engine!
We are not sure what caused it but the head shop says that there appears to
have been excessive heat within the cylinder possibly caused by the running
of both ignitions at once. Do I buy this theory? No I don't but in the end
what can you do? I have sent a letter to Stratus indicating that I will be
fitting an EGT to check for high combustion temps and only ever running one
ignition.
Beyond that all I can do is run a higher octane fuel to hopefully ensure
against detonation.
If after that this happens again and the timing is correct (which it was)
then something else is going on...
Frank
-----Original Message-----
From: Larry C. McFarland [mailto:larrymc@qconline.com]
Subject: Re: Zenith-List: Stratus Valve guide failures
--> Zenith-List message posted by: "Larry C. McFarland"
--> <larrymc@qconline.com>
Frank,
Was the failure the result of the guide or modification
of the valve? Did it do damage to anything else?
Larry C. McFarland -
Do Not Archive
> --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
<frank.hinde@hp.com>
>
> Hi all,
>
> I just had a failure of one of Stratus's valve guides in my engine.
> This
is
> the new style Phosphor bronze guides with a retaining clip.
>
> Stratus tells me I am the only failure they know about with this new
> style of guide. I wanted to see if there were any others out there to
> see if
there
> is more of a problem?
>
> Thanks
>
> Frank
advertising on the Matronics Forums.
Share: Share photos & files with other List members.
Message 10
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "The Meiste's" <meiste@essex1.com>
Frank,
Gads, that's really bad news, and I'm very sorry to heard you had this
problem!
Thanks for passing along this info to the rest of us. Can I ask what your
temps were running when the failure occurred?
I only have 31 hours on my Stratus (with new design guides) & all seems fine
so far. Now that winter's here my temps are well within the limits, but very
high if OAT is above 70 degrees.
Let us know how thing turn out for you.
Kelly
> I just had a failure of one of Stratus's valve guides in my engine. This
is
> the new style Phosphor bronze guides with a retaining clip.
Message 11
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
Darn Frank, I am sorry to hear it. I had my first guide failure two years
ago at 42 hours. Mikel sent me another head and assured me the other
original was unlikely to have a problem. Of course the other original
failed..at 250 hours. It was another knurled intake guide. Then ten hours
later the replacement head he sent me had one fail. This replacement head
failed on another darned knurled guide. So I have had three now..pretty
disgusting. Believe it or not, I had a machinist here do the heads for me.
He put in oversized guides, honed the bores with a gunbarrel pattern which
he put locktight in. He says I will have to machine them out. We'll see. He
did them for $50 a head. MIKEL WANTED $200 PLUS A CORE for a head.
I had been thinking of making a couple new heads up with the bronze, but
now I wonder.
WHAT WAS THE NATURE OF YOUR FAILURE? Don Walker, HDS 270 hr.
----- Original Message -----
From: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Subject: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
<frank.hinde@hp.com>
>
> Hi all,
>
> I just had a failure of one of Stratus's valve guides in my engine. This
is
> the new style Phosphor bronze guides with a retaining clip.
>
> Stratus tells me I am the only failure they know about with this new style
> of guide. I wanted to see if there were any others out there to see if
there
> is more of a problem?
>
> Thanks
>
> Frank
>
>
Message 12
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| Subject: | Stratus Valve guide failures |
--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Engine temps perfectly normal (of course). After it happened twice you can
bet I did not even time the engine without the prop on to provide cooling. I
have never allowed the engine temp to exceed 210 degrees.
To be fair, MAYBE.. There is a high combustion temp/detonation problem
(that's what the head shop guy told Stratus, hence the desire to fit an EGT
to prove/disprove this theory) Either way the cost is down to me, Stratus
did upgrade my old heads to the new design after a knurled guide (a common
machine shop botch that apparently was done before Stratus got the heads)
for free.
If you are having overheating with only 70 degrees outside then your cooling
is not working very well, mine works to about 95. If you have the standard
ZAC cooling system it does not work very well in any case as the rad is too
close to the prop. Most of the air is swishing sideways across the front of
the rad rather than being forced backwards thru the rad.
Hence it does not cool effectively....
Welcome to homebuilding/experimenting
Frank
-----Original Message-----
From: The Meiste's [mailto:meiste@essex1.com]
Subject: Re: Zenith-List: Stratus Valve guide failures
--> Zenith-List message posted by: "The Meiste's" <meiste@essex1.com>
Frank,
Gads, that's really bad news, and I'm very sorry to heard you had this
problem! Thanks for passing along this info to the rest of us. Can I ask
what your temps were running when the failure occurred? I only have 31 hours
on my Stratus (with new design guides) & all seems fine so far. Now that
winter's here my temps are well within the limits, but very high if OAT is
above 70 degrees. Let us know how thing turn out for you.
Kelly
> I just had a failure of one of Stratus's valve guides in my engine.
> This
is
> the new style Phosphor bronze guides with a retaining clip.
advertising on the Matronics Forums.
Share: Share photos & files with other List members.
Message 13
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
Frank,
I am curious about something here. Check the head gasket. I noticed that
the gaskets partially cover or completely cover some of the ports for
cooling water around the head. All I have seen are this way. I have wondered
why this is and if it contributes to this problem. Don
----- Original Message -----
From: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Subject: RE: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
<frank.hinde@hp.com>
>
> Hi Larry,
>
> Oh it always (this is the third time!) does damage to the pistons, If your
> lucky it won't destroy your entire engine!
>
> We are not sure what caused it but the head shop says that there appears
to
> have been excessive heat within the cylinder possibly caused by the
running
> of both ignitions at once. Do I buy this theory? No I don't but in the end
> what can you do? I have sent a letter to Stratus indicating that I will be
> fitting an EGT to check for high combustion temps and only ever running
one
> ignition.
>
> Beyond that all I can do is run a higher octane fuel to hopefully ensure
> against detonation.
>
> If after that this happens again and the timing is correct (which it was)
> then something else is going on...
>
> Frank
>
> -----Original Message-----
> From: Larry C. McFarland [mailto:larrymc@qconline.com]
> To: zenith-list@matronics.com
> Subject: Re: Zenith-List: Stratus Valve guide failures
>
>
> --> Zenith-List message posted by: "Larry C. McFarland"
> --> <larrymc@qconline.com>
>
> Frank,
> Was the failure the result of the guide or modification
> of the valve? Did it do damage to anything else?
> Larry C. McFarland -
> Do Not Archive
>
>
> > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
> <frank.hinde@hp.com>
> >
> > Hi all,
> >
> > I just had a failure of one of Stratus's valve guides in my engine.
> > This
> is
> > the new style Phosphor bronze guides with a retaining clip.
> >
> > Stratus tells me I am the only failure they know about with this new
> > style of guide. I wanted to see if there were any others out there to
> > see if
> there
> > is more of a problem?
> >
> > Thanks
> >
> > Frank
>
>
> advertising on the Matronics Forums.
> Share: Share photos & files with other List members.
>
>
Message 14
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| Subject: | Stratus Valve guide failures |
--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
The nature of my failure, Well as I said the "Jim the machinist" says the
heads have been exposed to excessive heat.
Failure exactly the same as other guides (so the clip really does nothing
except "dissappear") i.e the guide moves out of the hole and gets hammered
back and forth, the clip dissappears and the guide slips down and get gets
hammered open by the tapered part of the valve...then you look for a field!
Once again God was gracious and I made it back home.
Ok Then why?.....Maybe running both ignitions simultaneously.....Hmmmm
Mykal is now rebuilding heads at my cost....
Frank
-----Original Message-----
From: Don Walker [mailto:dwalk3dw@msn.com]
Subject: Re: Zenith-List: Stratus Valve guide failures
--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
Darn Frank, I am sorry to hear it. I had my first guide failure two years
ago at 42 hours. Mikel sent me another head and assured me the other
original was unlikely to have a problem. Of course the other original
failed..at 250 hours. It was another knurled intake guide. Then ten hours
later the replacement head he sent me had one fail. This replacement head
failed on another darned knurled guide. So I have had three now..pretty
disgusting. Believe it or not, I had a machinist here do the heads for me.
He put in oversized guides, honed the bores with a gunbarrel pattern which
he put locktight in. He says I will have to machine them out. We'll see. He
did them for $50 a head. MIKEL WANTED $200 PLUS A CORE for a head.
I had been thinking of making a couple new heads up with the bronze, but
now I wonder. WHAT WAS THE NATURE OF YOUR FAILURE? Don Walker, HDS 270 hr.
----- Original Message -----
From: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Subject: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
<frank.hinde@hp.com>
>
> Hi all,
>
> I just had a failure of one of Stratus's valve guides in my engine.
> This
is
> the new style Phosphor bronze guides with a retaining clip.
>
> Stratus tells me I am the only failure they know about with this new
> style of guide. I wanted to see if there were any others out there to
> see if
there
> is more of a problem?
>
> Thanks
>
> Frank
>
>
advertising on the Matronics Forums.
Share: Share photos & files with other List members.
Message 15
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "David & Maria Lumgair" <dlummy@visi.net>
> We are not sure what caused it but the head shop says that there appears
to
> have been excessive heat within the cylinder possibly caused by the
running
> of both ignitions at once. Do I buy this theory? No I don't but in the end
> what can you do?
Just for the record, running dual ignitions should increase efficiency and
REDUCE Cylinder head temps -especially with dual plugs (which I don't expect
on a stratus). Your timing theory could be on target - what do the spark
plugs look like when you remove them? Bright white? or with small metallic
particles on them that are barely visible to the naked eye? If you see
particles I would look at detonation - if not - check for a manifold leak,
or if you have a multi carb setup, check for a lean carburator, either of
those two will definitely cause heat problems. Dave
DO NOT ARCHIVE
Message 16
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| Subject: | Stratus Valve guide failures |
--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
I think if it did Mykal would have told me to open the extra holes up...I
hope he would. Good thought, I will ask him.
Thanks
Frank
-----Original Message-----
From: Don Walker [mailto:dwalk3dw@msn.com]
Subject: Re: Zenith-List: Stratus Valve guide failures
--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
Frank,
I am curious about something here. Check the head gasket. I noticed that
the gaskets partially cover or completely cover some of the ports for
cooling water around the head. All I have seen are this way. I have wondered
why this is and if it contributes to this problem. Don
----- Original Message -----
From: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Subject: RE: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
<frank.hinde@hp.com>
>
> Hi Larry,
>
> Oh it always (this is the third time!) does damage to the pistons, If
> your lucky it won't destroy your entire engine!
>
> We are not sure what caused it but the head shop says that there
> appears
to
> have been excessive heat within the cylinder possibly caused by the
running
> of both ignitions at once. Do I buy this theory? No I don't but in the
> end what can you do? I have sent a letter to Stratus indicating that I
> will be fitting an EGT to check for high combustion temps and only
> ever running
one
> ignition.
>
> Beyond that all I can do is run a higher octane fuel to hopefully
> ensure against detonation.
>
> If after that this happens again and the timing is correct (which it
> was) then something else is going on...
>
> Frank
>
> -----Original Message-----
> From: Larry C. McFarland [mailto:larrymc@qconline.com]
> To: zenith-list@matronics.com
> Subject: Re: Zenith-List: Stratus Valve guide failures
>
>
> --> Zenith-List message posted by: "Larry C. McFarland"
> --> <larrymc@qconline.com>
>
> Frank,
> Was the failure the result of the guide or modification
> of the valve? Did it do damage to anything else?
> Larry C. McFarland -
> Do Not Archive
>
>
> > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
> <frank.hinde@hp.com>
> >
> > Hi all,
> >
> > I just had a failure of one of Stratus's valve guides in my engine.
> > This
> is
> > the new style Phosphor bronze guides with a retaining clip.
> >
> > Stratus tells me I am the only failure they know about with this new
> > style of guide. I wanted to see if there were any others out there
> > to see if
> there
> > is more of a problem?
> >
> > Thanks
> >
> > Frank
>
>
> advertising on the Matronics Forums.
> Share: Share photos & files with other List members.
>
>
advertising on the Matronics Forums.
Share: Share photos & files with other List members.
Message 17
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| Subject: | 701 cowl questions |
--> Zenith-List message posted by: mike sinclair <mike.sinclair@att.net>
Hi all
Been back on the list for about a month now after a 1.5 year break.
Started building a 701 taildragger in June of 99, got sidetracked and in
the last few months am now getting back to it. Got the wings ready to
hang and am now working on the panel / forward portion of the project.
Hope to be flying sometime this summer if all goes well. My EAA tech
counseller has been visiting and I've got my flight advisor lined up for
when I get to that point.
Now for the question (in a round about sort of way), I've got the
Rotax 912 going into this plane. I've also got the fiberglass cowl that
came with the kit. I've done a fair amount of glass work myself, and in
my humble opinion ZAC's cowl is substandard design and workmanship. Does
anyone know of a company product, or good design that will work will
this engine? Specifically, I would like to come up with a cowl that has
looks along the lines of a Super Cub, complete with the nose bowl type
of configuration. The lower portion would have to be modifiable to
accomodate the radiator and oil cooler and the way the muffler protrudes
below the lower lines of the fuselage. Aluminum would probably be
preferable, but a decent design made of glass would work. All
suggestions will probably be explored, and thanks for your input in
advance.
Mike Sinclair
Message 18
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| Subject: | Sebastian to be on Kitplane Radio |
--> Zenith-List message posted by: "Gig Giacona" <wr.giacona@cox-internet.com>
Thursday, January 30 at 8 a.m. Pacific
Sebastian Heintz heads Zenith Aircraft, which turns out kits of six of his
fathers most popular designs including the new four-seat CH-640. In segment
one, we will talk with Sebastian about in-house training that his company
offers at his Mexico, Missouri, plant to builders of this line of kit
airplanes.
Conventional piston aircraft engines have long been criticized for the
lack of advancement found in any recent car or truck. Recently, more modern
technology has been introduced on some of these powerplants, and aviation
writer Dave Higdon will tell us about new engine systems (FADEC and LASAR)
that he has sampled. These systems may help move light aircraft engines out
of the dark ages.
For decades, air-cooled, flat-four Volkswagen engines have been
appropriated out of VW Beetles and mini buses for successful use in
homebuilt airplanes and gyroplanes. More often today, these engines
incorporate new or improved parts. Steve Bennett, whose company--Great
Planes Aircraft Supply--has provided homebuilders with VW-derived engines
for 21 years, will talk with us about it.
Have a Question for an Upcoming Guest?
In an effort to make KITPLANESRadio more interactive, we've decided to start
accepting questions from listeners. If you have a question for any of next
week's guests, e-mail it to us at radio@kitplanes.com. Be sure to provide
your name and location, and we'll read your question on the air.
There are three ways to find our what guests are scheduled to appear on
the upcoming show. First, read this newsletter each week when it's sent out
on Thursday or Friday. Second, check the KITPLANES page on wsradio.com's
site -- www.wsradio.com/kitplanes. Third, visit the KITPLANES home page,
www.kitplanes.com, and click on the item in the news column that says "Guest
Lineup for KITPLANESRadio."
Questions can be about anything related to the topic of conversation,
whether they are in regard to something specific a guest has done or a
general question that the guest would be qualified to answer. Make sure to
have all questions in by the day before the show (Wednesday). That'll give
us time to collect the questions and decide which ones are relevant to the
conversation.
How to Listen to KITPLANESRadio
We've noticed that some people are unaware that you can listen to the show
anytime you want. While you can listen live on Thursday mornings, all shows
are archived for later listening. All segments are archived by topic and
date, and you can access them anytime. This is one of the main benefits of
internet radio -- anyone can listen anywhere, anytime.
Here's how to listen: visit www.wsradio.com/kitplanes. If you're
listening at 8 a.m. on Thursday, go directly to the Listen Live link at the
top of the page. Otherwise, select from the previous segments, which you'll
find summarized on the site (click the "Archives: Listen to Previous Shows"
link). Shows are archived within 24 hours of their live broadcast
Listen with Microsoft Media Player, which is the default player on most
PCs. You'll need a 56K modem to listen live, however a 28K modem will work
to listen to archived shows.
For more information, visit http://www.kitplanes.com/ and click on the
KITPLANESRadio banner, or visit www.wsradio.com/kitplanes.
Message 19
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| Subject: | Stratus Valve guide failures |
--> Zenith-List message posted by: Bill Cardell <bill@flyinmiata.com>
I'm with Dave, the dual ignition should be cutting temps. One big cause of
increased temps would be retarded timing. What kind of timing does it run at
cruise or full power? Coolant temps?
Bill Cardell (TurboDog's Dad)
bill@flyinmiata.com
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
http://flyinmiata.com
-----Original Message-----
From: David & Maria Lumgair [mailto:dlummy@visi.net]
Subject: Re: Zenith-List: Stratus Valve guide failures
--> Zenith-List message posted by: "David & Maria Lumgair" <dlummy@visi.net>
> We are not sure what caused it but the head shop says that there appears
to
> have been excessive heat within the cylinder possibly caused by the
running
> of both ignitions at once. Do I buy this theory? No I don't but in the end
> what can you do?
Just for the record, running dual ignitions should increase efficiency and
REDUCE Cylinder head temps -especially with dual plugs (which I don't expect
on a stratus). Your timing theory could be on target - what do the spark
plugs look like when you remove them? Bright white? or with small metallic
particles on them that are barely visible to the naked eye? If you see
particles I would look at detonation - if not - check for a manifold leak,
or if you have a multi carb setup, check for a lean carburator, either of
those two will definitely cause heat problems. Dave
DO NOT ARCHIVE
Message 20
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|
| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "Dave Alberti" <daberti@execpc.com>
And is the timing the same on both ignitions?
Dave
----- Original Message -----
From: "Bill Cardell" <bill@flyinmiata.com>
Subject: RE: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: Bill Cardell <bill@flyinmiata.com>
>
> I'm with Dave, the dual ignition should be cutting temps. One big cause of
> increased temps would be retarded timing. What kind of timing does it run
at
> cruise or full power? Coolant temps?
>
> Bill Cardell (TurboDog's Dad)
> bill@flyinmiata.com
> Flyin' Miata
> 1-800-359-6957 (sales only)
> 970-242-3800 (tech support)
> http://flyinmiata.com
>
> -----Original Message-----
> From: David & Maria Lumgair [mailto:dlummy@visi.net]
> To: zenith-list@matronics.com
> Subject: Re: Zenith-List: Stratus Valve guide failures
>
>
> --> Zenith-List message posted by: "David & Maria Lumgair"
<dlummy@visi.net>
>
>
> > We are not sure what caused it but the head shop says that there appears
> to
> > have been excessive heat within the cylinder possibly caused by the
> running
> > of both ignitions at once. Do I buy this theory? No I don't but in the
end
> > what can you do?
>
> Just for the record, running dual ignitions should increase efficiency and
> REDUCE Cylinder head temps -especially with dual plugs (which I don't
expect
> on a stratus). Your timing theory could be on target - what do the spark
> plugs look like when you remove them? Bright white? or with small
metallic
> particles on them that are barely visible to the naked eye? If you see
> particles I would look at detonation - if not - check for a manifold leak,
> or if you have a multi carb setup, check for a lean carburator, either of
> those two will definitely cause heat problems. Dave
>
> DO NOT ARCHIVE
>
>
Message 21
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|
| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
Frank,
for what it is worth, my last two guide failures (one in November and
the other in December) both occurred using only one ignition system and
engine temps of 175 to 180 degrees. Last summer the highest temps I found
were 215 on long climbout. This is well within Stratus published range, as
you know. Don
----- Original Message -----
From: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Subject: RE: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
<frank.hinde@hp.com>
>
> The nature of my failure, Well as I said the "Jim the machinist" says the
> heads have been exposed to excessive heat.
>
> Failure exactly the same as other guides (so the clip really does nothing
> except "dissappear") i.e the guide moves out of the hole and gets hammered
> back and forth, the clip dissappears and the guide slips down and get gets
> hammered open by the tapered part of the valve...then you look for a
field!
>
> Once again God was gracious and I made it back home.
>
> Ok Then why?.....Maybe running both ignitions simultaneously.....Hmmmm
>
>
> Mykal is now rebuilding heads at my cost....
>
> Frank
>
>
> -----Original Message-----
> From: Don Walker [mailto:dwalk3dw@msn.com]
> To: zenith-list@matronics.com
> Subject: Re: Zenith-List: Stratus Valve guide failures
>
>
> --> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
>
> Darn Frank, I am sorry to hear it. I had my first guide failure two years
> ago at 42 hours. Mikel sent me another head and assured me the other
> original was unlikely to have a problem. Of course the other original
> failed..at 250 hours. It was another knurled intake guide. Then ten hours
> later the replacement head he sent me had one fail. This replacement head
> failed on another darned knurled guide. So I have had three now..pretty
> disgusting. Believe it or not, I had a machinist here do the heads for me.
> He put in oversized guides, honed the bores with a gunbarrel pattern which
> he put locktight in. He says I will have to machine them out. We'll see.
He
> did them for $50 a head. MIKEL WANTED $200 PLUS A CORE for a head.
> I had been thinking of making a couple new heads up with the bronze,
but
> now I wonder. WHAT WAS THE NATURE OF YOUR FAILURE? Don Walker, HDS 270
hr.
>
>
> ----- Original Message -----
> From: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
> To: <zenith-list@matronics.com>
> Subject: Zenith-List: Stratus Valve guide failures
>
>
> > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
> <frank.hinde@hp.com>
> >
> > Hi all,
> >
> > I just had a failure of one of Stratus's valve guides in my engine.
> > This
> is
> > the new style Phosphor bronze guides with a retaining clip.
> >
> > Stratus tells me I am the only failure they know about with this new
> > style of guide. I wanted to see if there were any others out there to
> > see if
> there
> > is more of a problem?
> >
> > Thanks
> >
> > Frank
> >
> >
>
>
> advertising on the Matronics Forums.
> Share: Share photos & files with other List members.
>
>
Message 22
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|
| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "David & Maria Lumgair" <dlummy@visi.net>
Does anyone know the intake/exhaust duration of the cam that Stratus uses?
I also need to know the valve lash spec that they request you adjust them
to, I have a theory... Thinking too much -- Dave
DO NOT ARCHIVE
----- Original Message -----
From: "Don Walker" <dwalk3dw@msn.com>
Subject: Re: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
>
>
> Frank,
> for what it is worth, my last two guide failures (one in November and
> the other in December) both occurred using only one ignition system and
> engine temps of 175 to 180 degrees. Last summer the highest temps I found
> were 215 on long climbout. This is well within Stratus published range, as
> you know. Don
>
> ----- Original Message -----
> From: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
> To: <zenith-list@matronics.com>
> Subject: RE: Zenith-List: Stratus Valve guide failures
>
>
> > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
> <frank.hinde@hp.com>
> >
> > The nature of my failure, Well as I said the "Jim the machinist" says
the
> > heads have been exposed to excessive heat.
> >
> > Failure exactly the same as other guides (so the clip really does
nothing
> > except "dissappear") i.e the guide moves out of the hole and gets
hammered
> > back and forth, the clip dissappears and the guide slips down and get
gets
> > hammered open by the tapered part of the valve...then you look for a
> field!
> >
> > Once again God was gracious and I made it back home.
> >
> > Ok Then why?.....Maybe running both ignitions simultaneously.....Hmmmm
> >
> >
> > Mykal is now rebuilding heads at my cost....
> >
> > Frank
> >
> >
> > -----Original Message-----
> > From: Don Walker [mailto:dwalk3dw@msn.com]
> > To: zenith-list@matronics.com
> > Subject: Re: Zenith-List: Stratus Valve guide failures
> >
> >
> > --> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
> >
> > Darn Frank, I am sorry to hear it. I had my first guide failure two
years
> > ago at 42 hours. Mikel sent me another head and assured me the other
> > original was unlikely to have a problem. Of course the other original
> > failed..at 250 hours. It was another knurled intake guide. Then ten
hours
> > later the replacement head he sent me had one fail. This replacement
head
> > failed on another darned knurled guide. So I have had three now..pretty
> > disgusting. Believe it or not, I had a machinist here do the heads for
me.
> > He put in oversized guides, honed the bores with a gunbarrel pattern
which
> > he put locktight in. He says I will have to machine them out. We'll see.
> He
> > did them for $50 a head. MIKEL WANTED $200 PLUS A CORE for a head.
> > I had been thinking of making a couple new heads up with the bronze,
> but
> > now I wonder. WHAT WAS THE NATURE OF YOUR FAILURE? Don Walker, HDS 270
> hr.
> >
> >
> > ----- Original Message -----
> > From: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
> > To: <zenith-list@matronics.com>
> > Subject: Zenith-List: Stratus Valve guide failures
> >
> >
> > > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
> > <frank.hinde@hp.com>
> > >
> > > Hi all,
> > >
> > > I just had a failure of one of Stratus's valve guides in my engine.
> > > This
> > is
> > > the new style Phosphor bronze guides with a retaining clip.
> > >
> > > Stratus tells me I am the only failure they know about with this new
> > > style of guide. I wanted to see if there were any others out there to
> > > see if
> > there
> > > is more of a problem?
> > >
> > > Thanks
> > >
> > > Frank
> > >
> > >
> >
> >
> > advertising on the Matronics Forums.
> > Share: Share photos & files with other List members.
> >
> >
>
>
Message 23
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "The Meiste's" <meiste@essex1.com>
> for what it is worth, my last two guide failures (one in November and
> the other in December) both occurred using only one ignition system and
> engine temps of 175 to 180 degrees. Last summer the highest temps I found
> were 215 on long climbout.
175 to 180 & you had a failure (2)?
I've touched the "magic" 230 mark several times without a failure. I find it
hard to believe each engine has a different tolerance range. Also Stratus
recommends not even taking off until you have 180 MINIMUM, even then I only
use about 3/4 throttle until things get good and warm. FWIW mine seems very
happy to run at 200 -220,and I hope it stays that way (but I'm sure once
summer arrives things will change).
Kelly
Message 24
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|
| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: Michael Stempf <mstempf@earthlink.net>
Sorry for the stupid question (new builder here) but what exactly is a Stratus?
From the thread it sounds like it is an engine - but I have never heard of it.
Thanks for the help,
Michael
-------Original Message-------
From: The Meiste's <meiste@essex1.com>
Subject: Re: Zenith-List: Stratus Valve guide failures
>
> --> Zenith-List message posted by: "The Meiste's" <meiste@essex1.com>
> for what it is worth, my last two guide failures (one in November
and
> the other in December) both occurred using only one ignition system and
> engine temps of 175 to 180 degrees. Last summer the highest temps I
found
> were 215 on long climbout.
175 to 180 & you had a failure (2)?
I've touched the "magic" 230 mark several times without a failure. I find
it
hard to believe each engine has a different tolerance range. Also Stratus
recommends not even taking off until you have 180 MINIMUM, even then I
only
use about 3/4 throttle until things get good and warm. FWIW mine seems
very
happy to run at 200 -220,and I hope it stays that way (but I'm sure once
summer arrives things will change).
Kelly
>
Message 25
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|
| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "jackie b johnson" <zjohnson@ucnsb.net>
Don't buy your dual ignition theory..I run both all the time..use 95 % car
gas..ign is set as per NSI at 33-34 degs, and my temps are steady 200-210 on
water,190-200 on oil...at 350 hrs,no problems so far..knock on wood..do keep
us informed,w3hat ever you find..thanks
Jackie N5JZ
-----Original Message-----
From: HINDE,FRANK (HP-Corvallis,ex1) <frank.hinde@hp.com>
Subject: RE: Zenith-List: Stratus Valve guide failures
>--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
<frank.hinde@hp.com>
>
>The nature of my failure, Well as I said the "Jim the machinist" says the
>heads have been exposed to excessive heat.
>
>Failure exactly the same as other guides (so the clip really does nothing
>except "dissappear") i.e the guide moves out of the hole and gets hammered
>back and forth, the clip dissappears and the guide slips down and get gets
>hammered open by the tapered part of the valve...then you look for a field!
>
>Once again God was gracious and I made it back home.
>
>Ok Then why?.....Maybe running both ignitions simultaneously.....Hmmmm
>
>
>Mykal is now rebuilding heads at my cost....
>
>Frank
>
>
>-----Original Message-----
>From: Don Walker [mailto:dwalk3dw@msn.com]
>To: zenith-list@matronics.com
>Subject: Re: Zenith-List: Stratus Valve guide failures
>
>
>--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
>
>Darn Frank, I am sorry to hear it. I had my first guide failure two years
>ago at 42 hours. Mikel sent me another head and assured me the other
>original was unlikely to have a problem. Of course the other original
>failed..at 250 hours. It was another knurled intake guide. Then ten hours
>later the replacement head he sent me had one fail. This replacement head
>failed on another darned knurled guide. So I have had three now..pretty
>disgusting. Believe it or not, I had a machinist here do the heads for me.
>He put in oversized guides, honed the bores with a gunbarrel pattern which
>he put locktight in. He says I will have to machine them out. We'll see. He
>did them for $50 a head. MIKEL WANTED $200 PLUS A CORE for a head.
> I had been thinking of making a couple new heads up with the bronze, but
>now I wonder. WHAT WAS THE NATURE OF YOUR FAILURE? Don Walker, HDS 270 hr.
>
>
>----- Original Message -----
>From: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
>To: <zenith-list@matronics.com>
>Subject: Zenith-List: Stratus Valve guide failures
>
>
>> --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)"
><frank.hinde@hp.com>
>>
>> Hi all,
>>
>> I just had a failure of one of Stratus's valve guides in my engine.
>> This
>is
>> the new style Phosphor bronze guides with a retaining clip.
>>
>> Stratus tells me I am the only failure they know about with this new
>> style of guide. I wanted to see if there were any others out there to
>> see if
>there
>> is more of a problem?
>>
>> Thanks
>>
>> Frank
>>
>>
>
>
>advertising on the Matronics Forums.
>Share: Share photos & files with other List members.
>
>
Message 26
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: STEFREE@aol.com
Hi List,
What does a guide failure "sound like" in the air, and then what are the
immediate handling issues? Does the engine just quit and you gotta land
immediately, or are you running on reduced power and just better find
something quick? On the outside does the engine change appearance or is this
completely internal? Does anyone know where I can find a good book on the
EA-81 engine so I can see a good "blow out" of the engine so I can even
understand fully the issues discussed, and...How do I know if I have the
modified valve guides or the old ones. I purchased my engine almost exactly
3 years ago.
Sorry for the run on sentence!
All of this discussion really has me worried about my engine choice. I am
not an engine mechanic by any stretch and I am seriously worried that I have
made poor choice. I have not seen on this list anywhere near this type of
problem discussed with the Rotax engines.
Thanks for your help and insight guys,
Steve (Getting close) Freeman
601 HDS, Stratus, 95% complete, should be taxi testing in the spring! If all
goes well!
N902AL
Message 27
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "Phil Maxson" <pmaxpmax@hotmail.com>
>Sorry for the stupid question (new builder here) but what exactly is a
>Stratus? From the thread it sounds like it is an engine - but I have never
>heard of it.
It is an engine.
Try these links:
http://www.zenithair.com/zodiac/6-subaru.html
and
http://www.stratus2000.homestead.com/files/stratusnew/index.htm
Phil Maxson
601 XL
N601MX
Message 28
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "David & Maria Lumgair" <dlummy@visi.net>
Steve -
Relax - The soob has been an excellent choice for aircraft for
years. Now for the experimental part - every plane is different - and every
one has a quirk. Of the probably thousands flying I would dare say that
bang for the buck of a soob is right up there if not better than any of the
others. As for RoTAX engines - not knocking them - they break too. Bonus
with a soob is that the local machine shop can work on them, parts
(generally) are at your local auto parts store, and there is a world full of
publications on them. I'm going to bang my head against a wall and see what
comes out on this valve guide issue, I have a couple friends that build
racing engines (for cars) and I might bounce ideas off them too - I've been
taking notes off the thread and comparing data... IF ANYONE ELSE HAS A SOOB
PLEASE POST YOUR NORMAL COOLANT/OIL TEMPS and the results of your valve
adjustments (ie were they generally still within spec and after how many
hours.) I have formed a hypothesis now and will let you know my results.
Dave
----- Original Message -----
From: <STEFREE@aol.com>
Subject: Re: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: STEFREE@aol.com
>
> Hi List,
>
> What does a guide failure "sound like" in the air, and then what are the
> immediate handling issues? Does the engine just quit and you gotta land
> immediately, or are you running on reduced power and just better find
> something quick? On the outside does the engine change appearance or is
this
> completely internal? Does anyone know where I can find a good book on the
> EA-81 engine so I can see a good "blow out" of the engine so I can even
> understand fully the issues discussed, and...How do I know if I have the
> modified valve guides or the old ones. I purchased my engine almost
exactly
> 3 years ago.
>
> Sorry for the run on sentence!
>
> All of this discussion really has me worried about my engine choice. I am
> not an engine mechanic by any stretch and I am seriously worried that I
have
> made poor choice. I have not seen on this list anywhere near this type of
> problem discussed with the Rotax engines.
>
> Thanks for your help and insight guys,
>
> Steve (Getting close) Freeman
> 601 HDS, Stratus, 95% complete, should be taxi testing in the spring! If
all
> goes well!
> N902AL
>
>
Message 29
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
Hi Kelly,
I think the difference may be in the condition of the engines that roll
out the front door. Mine arrived without a dip stick and I was asked if I
could find one cause they didn't have one. I had a slight leak in the front
engine seal from the get-go and eventually had to change it. Three of the
guides in mine had been knurled, which is not an acceptable aircraft
practice, but is done frequently in cars. The concentrics in my redrive were
not smooth, were too tight and had to be reworked. My dual ignition never
worked. The aux ignition would not pick up at all after the engine got to
190 degrees. Mykal sent me two more pickups, neither of which worked. Yet he
insisted it was the pickup. I think he is tired of cleaning up Reiner's
mess. I know of five engines that have had these problems..so far.
I, too, hit the magic 230 a couple of times during my first 40 hours.
The failure didn't come until after that. That may just be a precursor to
the problem.
Like you, I don't take off until I get an engine temp to 180. I never
have. But in the winter the temp will sometimes dip a little below this in
flight when you pull back the power. This is when one occurred for me. The
third was on climb out after pulling the power back and leveling off, with a
corresponding temp drop of about 5 or 10 degrees. Don
----- Original Message -----
From: "The Meiste's" <meiste@essex1.com>
Subject: Re: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: "The Meiste's" <meiste@essex1.com>
>
>
> > for what it is worth, my last two guide failures (one in November
and
> > the other in December) both occurred using only one ignition system and
> > engine temps of 175 to 180 degrees. Last summer the highest temps I
found
> > were 215 on long climbout.
>
>
> 175 to 180 & you had a failure (2)?
> I've touched the "magic" 230 mark several times without a failure. I find
it
> hard to believe each engine has a different tolerance range. Also Stratus
> recommends not even taking off until you have 180 MINIMUM, even then I
only
> use about 3/4 throttle until things get good and warm. FWIW mine seems
very
> happy to run at 200 -220,and I hope it stays that way (but I'm sure once
> summer arrives things will change).
>
> Kelly
>
>
Message 30
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| Subject: | Re: Stratus Valve guide failures |
--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
Dave, My valve guide clearances were still within spec when I checked them
after the incidents I previously described. Prior to the initial failure two
years ago they were set at the Stratus book spec of .016. Then I changed
them to .o14 as amended by Stratus. The next two occurred at this setting.
Stratus has them all set equally on intake and exhaust and they are
different than the car book settings. Don
----- Original Message -----
From: "David & Maria Lumgair" <dlummy@visi.net>
Subject: Re: Zenith-List: Stratus Valve guide failures
> --> Zenith-List message posted by: "David & Maria Lumgair"
<dlummy@visi.net>
>
> Steve -
> Relax - The soob has been an excellent choice for aircraft for
> years. Now for the experimental part - every plane is different - and
every
> one has a quirk. Of the probably thousands flying I would dare say that
> bang for the buck of a soob is right up there if not better than any of
the
> others. As for RoTAX engines - not knocking them - they break too. Bonus
> with a soob is that the local machine shop can work on them, parts
> (generally) are at your local auto parts store, and there is a world full
of
> publications on them. I'm going to bang my head against a wall and see
what
> comes out on this valve guide issue, I have a couple friends that build
> racing engines (for cars) and I might bounce ideas off them too - I've
been
> taking notes off the thread and comparing data... IF ANYONE ELSE HAS A
SOOB
> PLEASE POST YOUR NORMAL COOLANT/OIL TEMPS and the results of your valve
> adjustments (ie were they generally still within spec and after how many
> hours.) I have formed a hypothesis now and will let you know my results.
> Dave
>
>
> ----- Original Message -----
> From: <STEFREE@aol.com>
> To: <zenith-list@matronics.com>
> Subject: Re: Zenith-List: Stratus Valve guide failures
>
>
> > --> Zenith-List message posted by: STEFREE@aol.com
> >
> > Hi List,
> >
> > What does a guide failure "sound like" in the air, and then what are the
> > immediate handling issues? Does the engine just quit and you gotta land
> > immediately, or are you running on reduced power and just better find
> > something quick? On the outside does the engine change appearance or is
> this
> > completely internal? Does anyone know where I can find a good book on
the
> > EA-81 engine so I can see a good "blow out" of the engine so I can even
> > understand fully the issues discussed, and...How do I know if I have the
> > modified valve guides or the old ones. I purchased my engine almost
> exactly
> > 3 years ago.
> >
> > Sorry for the run on sentence!
> >
> > All of this discussion really has me worried about my engine choice. I
am
> > not an engine mechanic by any stretch and I am seriously worried that I
> have
> > made poor choice. I have not seen on this list anywhere near this type
of
> > problem discussed with the Rotax engines.
> >
> > Thanks for your help and insight guys,
> >
> > Steve (Getting close) Freeman
> > 601 HDS, Stratus, 95% complete, should be taxi testing in the spring! If
> all
> > goes well!
> > N902AL
> >
> >
>
>
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