Today's Message Index:
----------------------
1. 05:39 AM - throttle changes setting and canzac floats (Alvin Rose)
2. 05:55 AM - Re: throttle changes setting and canzac floats ()
3. 06:20 AM - Re: Rotax throttle springs (Zed Smith)
4. 06:23 AM - More 901 throttle (Zed Smith)
5. 06:24 AM - another corruption (Zed Smith)
6. 06:32 AM - =?iso-8859-1?Q?R=E9p=2E_=3A_Zenith701801-List=3A_throttle_changes_setting?= =?iso-8859-1?Q?_and_canzac_floats? (Jean-Paul Roy)
7. 06:56 AM - =?iso-8859-1?Q?Re:__R=E9p._:_Zenith701801-List:_throttl?= =?iso-8859-1?Q?e_changes_setting_and_canzac_floats? (BokKat)
8. 09:51 AM - Re: throttle changes setting and canzac floats (LarryMcFarland)
9. 10:39 AM - Re: Re: fuel flow for CH701 (Curt Thompson)
10. 11:32 AM - Re: 701 Hard Landing (Les Goldner)
11. 11:35 AM - Re: Re: After 5 hours flight time, questions (Les Goldner)
12. 12:46 PM - Re: Re: fuel flow for CH701 (Curt Thompson)
13. 12:48 PM - Re: Re: After 5 hours flight time, questions (Jean-Paul Roy)
14. 01:14 PM - Re: Re: After 5 hours flight time, questions (Craig Payne)
15. 01:49 PM - Re: Re: After 5 hours flight time, questions (Randall J. Hebert)
16. 01:58 PM - Re: Re: After 5 hours flight time, questions (Craig Payne)
17. 07:11 PM - Re: Re: After 5 hours flight time, questions (Les Goldner)
18. 08:29 PM - Re: fuel flow for CH701 (SafeAirOne)
Message 1
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| Subject: | throttle changes setting and canzac floats |
Hi Guys
My 701 engine speed will increase if I don't hold a firm grip
on the throttle..It does not stay where it is set. Is there a solution..
I thought of taking out the springs on each carburetor which opens
the throttle to release the pull back tension any suggestions would
be appreciated.
On the CanZac floats..I did not receive a reply from Mark Townsend
on My floats ordered on Feburary 7th and promised for May 15th..
I will cancel this order as I don't think there is a chance of getting
floats from CanZac ..If you need a set of floats I suggest you look
elsewhere
for them..My whole summer float flying season was not available because
of it.
Zenith Aircraft said they have been aware of this problem with Canzac
for more then a year..They are looking at a float kit you can build
yourself.
and other options too
Alvin Rose
Marystown, NL
CH-701
Message 2
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| Subject: | throttle changes setting and canzac floats |
Alvin
Do not remove or change the carburettor throttle springs.
They guarantee power if something fails. You can easily
increase friction on the transverse throttle bar or replace
the pilot side throttle to one having adjustable friction.
rgrds
Max
________________________________
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of ext
Alvin Rose
Sent: Monday, 22 September, 2008 15:39
To: zenith701801-list@matronics.com
Subject: Zenith701801-List: throttle changes setting and canzac
floats
Hi Guys
My 701 engine speed will increase if I don't hold a firm grip
on the throttle..It does not stay where it is set. Is there a
solution..
I thought of taking out the springs on each carburetor which
opens
the throttle to release the pull back tension any suggestions
would
be appreciated.
On the CanZac floats..I did not receive a reply from Mark
Townsend
on My floats ordered on Feburary 7th and promised for May 15th..
I will cancel this order as I don't think there is a chance of
getting
floats from CanZac ..If you need a set of floats I suggest you
look elsewhere
for them..My whole summer float flying season was not available
because of it.
Zenith Aircraft said they have been aware of this problem with
Canzac
for more then a year..They are looking at a float kit you can
build yourself.
and other options too
Alvin Rose
Marystown, NL
CH-701
Message 3
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| Subject: | Re: Rotax throttle springs |
Alvin,
It is not advisable to replace the throttle springs on the 912.
Although these springs may 'seem' a bit too much, they were spec'd that way in
order to guarantee opening of the throttle.
Be default, the 912 is 'wide-open'throttle'.....it is the throttle linkage you
install that maintains some setting less than wide open. This arrangement may
appear 'backwards' of conventional thinking, but it is simply the method Rotax
chose to use.
On at least on 701 I am aware of, these were replaced with 'weaker' versions.
Works real good until you suddenly need to make a go-around and find that you are
faced with throttles that open very slowly ( or not at all ) as you manage
NOT to clear some obstacle.
It is possible that you may even see a 'first hand account' of this problem on
the List.
Best regards,
Zed
Message 4
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| Subject: | More 901 throttle |
That paragraph should have read, " On at least ONE....."
Zed
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| Subject: | another corruption |
probably should have referenced "912" throttle, not 901.
difficult to multi-task this early in the day!
zed
Message 6
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| Subject: | =?iso-8859-1?Q?R=E9p=2E_=3A_Zenith701801-List=3A_throttle_changes_setting?= |
=?iso-8859-1?Q?_and_canzac_floats?
Alvin, by all means DO NOT REMOVE THESE SPRINGS,,,,,,,,,, you may want to c
ontact Jon Croke from Homebuilthelp.com and have him tell you what has happ
enned doing this. He crashed his 701. I'm sure he will be happy to tell you
what he's done about it.
Hope this helps
Jean-Paul Roy
--- En date de-: Lun, 22.9.08, Alvin Rose <ajroseca@nf.sympatico.ca> a
=E9crit-:
De: Alvin Rose <ajroseca@nf.sympatico.ca>
Objet: Zenith701801-List: throttle changes setting and canzac floats
=C0: zenith701801-list@matronics.com
Hi Guys
-
My 701 engine speed will increase if I don't hold a firm grip
on the throttle..It does not stay where it is set. Is there a solution..
I thought of taking out the-springs on each carburetor which opens
the throttle to release the-pull back tension any suggestions would
be appreciated.
On the CanZac floats..I did not receive a reply from Mark Townsend
on My floats ordered on Feburary 7th and promised for May 15th..
I will cancel-this order as I don't -think there is a chance of getting
floats from CanZac-..If you need a set of floats I suggest you look elsew
here
for them..My whole summer float flying season was not available because of
it.
Zenith Aircraft said they have been aware of this problem with Canzac
for -more then a year..They are-looking at a float kit-you can build
yourself.-
and other options too
-
Alvin Rose
Marystown, NL
CH-701
=0A=0A=0A =C0 la recherche du cadeau id=E9al? Offrez Flickr!=0Ahttp://
www.flickr.com/gift/
Message 7
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| Subject: | Re: -1?Q?Re:_Zenith701801-List:_R=E9p._:_Zenith701801-List:_throttl?= |
=?iso-8859-1?Q?e_changes_setting_and_canzac_floats?
Yes, do not remove them! I bought a Kitfox that had the springs removed
and the cables replaced with solid cables so that the throttle was
"pushed" open with the throttle cable. At the time I wasn't aware of
the PROPER method of hooking things up. Ignornce was bliss! Worked
great till one of the solid cables broke shortly after takeoff, leaving
me with half an engine! Not a smooth 'half' engine, either, the engine
coughing and surging and bucking, although still producing some power.
It would have got me home if I had the altitude, but I couldn't climb
with it!
I had little runway left but chopped the power and I swear slipped the
plane sideways all the way to the ground (never have slipped any
aircraft so much, before or since) and kicked it straight at the last
second, pulling back on the stick and putting on the brakes as hard as I
dared without nosing over! There was a line of tree stumps along the
far end of the runway and I stopped with the prop less that 6 inches
from a huge tree stump.
So I wouldn't advise changing the springs to a different method. Those
springs ar a great safety mechanism, as I almost found out the hard way!
On my 701 I replaced the T handle on the left throttle with a regular
adjustable throttle knob. Otherwise adjust the friction bar on the
firewall. But don't mess with the springs! Ouch!
----- Original Message -----
From: Jean-Paul Roy
To: zenith701801-list@matronics.com
Sent: Monday, September 22, 2008 8:28 AM
Subject: Zenith701801-List: R=E9p. : Zenith701801-List: throttle
changes setting and canzac floats
Alvin, by all means DO NOT REMOVE THESE SPRINGS,,,,,,,,,, you
may want to contact Jon Croke from Homebuilthelp.com and have him tell
you what has happenned doing this. He crashed his 701. I'm sure he will
be happy to tell you what he's done about it.
Hope this helps
Jean-Paul Roy
--- En date de : Lun, 22.9.08, Alvin Rose
<ajroseca@nf.sympatico.ca> a =E9crit :
De: Alvin Rose <ajroseca@nf.sympatico.ca>
Objet: Zenith701801-List: throttle changes setting and canzac
floats
=C0: zenith701801-list@matronics.com
Date: lundi 22 Septembre 2008, 8 h 38
Hi Guys
My 701 engine speed will increase if I don't hold a firm grip
on the throttle..It does not stay where it is set. Is there a
solution..
I thought of taking out the springs on each carburetor which
opens
the throttle to release the pull back tension any suggestions
would
be appreciated.
On the CanZac floats..I did not receive a reply from Mark
Townsend
on My floats ordered on Feburary 7th and promised for May
15th..
I will cancel this order as I don't think there is a chance
of getting
floats from CanZac ..If you need a set of floats I suggest you
look elsewhere
for them..My whole summer float flying season was not
available because of it.
Zenith Aircraft said they have been aware of this problem with
Canzac
for more then a year..They are looking at a float kit you can
build yourself.
and other options too
Alvin Rose
Marystown, NL
CH-701
ist" target=_blank
rel=nofollow>http://www.matronics.com/Navigator?Zenith701801-List
=nofollow>http://forums.matronics.com
blank rel=nofollow>http://www.matronics.com/contribution
-------------------------------------------------------------------------
-----
D=E9couvrez les styles qui font sensation sur Yahoo! Qu=E9bec Avatars
Message 8
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| Subject: | Re: throttle changes setting and canzac floats |
Hi Alvin,
I had the same gripe with my Subaru powered 601hds and removed the
springs and went to
a throttle-cable arrangement that has a sheath guided 1/16th diameter
music wire. It's push pull now and
works like any Cessna or Piper and I like it much better. Also, I got
rid of the dual cables as well
and went with a flexible interconnect to tie the two throttle arms, so
only one cable from the firewall
forward is needed. The throttles stay exactly at the same relative
positions open thru closed.
5 or more pictures on my sites engine page describe the arrangement
which is only similar to the Rotax.
See link, www.macsmachine.com/html/subaruengine.htm
Larry McFarland 601HDS at www.macsmachine.com
Alvin Rose wrote:
> Hi Guys
>
> My 701 engine speed will increase if I don't hold a firm grip
> on the throttle..It does not stay where it is set. Is there a solution..
> I thought of taking out the springs on each carburetor which opens
> the throttle to release the pull back tension any suggestions would
> be appreciated.
> On the CanZac floats..I did not receive a reply from Mark Townsend
> on My floats ordered on Feburary 7th and promised for May 15th..
> I will cancel this order as I don't think there is a chance of getting
> floats from CanZac ..If you need a set of floats I suggest you look
> elsewhere
> for them..My whole summer float flying season was not available
> because of it.
> Zenith Aircraft said they have been aware of this problem with Canzac
> for more then a year..They are looking at a float kit you can build
> yourself.
> and other options too
>
> Alvin Rose
> Marystown, NL
> CH-701
> *
> *
Message 9
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| Subject: | Re: fuel flow for CH701 |
Great find on that info Mark. Kind of confirms my thought about that
interconnecting vent tube needing to always be above the tank.
I don't quite get how the fuel is coming from the fullest tank though. If
the fuel was coming from the fullest tank then why wouldn't the level in
that tank go down? Is the posting saying that the fuel is siphoning across
the interconnecting vent tube?
I also don't see how putting a vent tube on both tanks would help either.
Wouldn't that be more likely to allow a differential pressure between tanks?
Curt
-----Original Message-----
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of
SafeAirOne
Sent: Sunday, September 21, 2008 8:30 PM
Subject: Zenith701801-List: Re: fuel flow for CH701
<safeairone@verizon.net>
Great study of the issue, Bob!
I was curious about this problem and its solution in production aircraft. A
web search revealed the same complaint from everything from Yaks to Cessnas.
Of course, the Yaks are low-winged, but the discussion in their forum
eventually turned to the problem in Cessnas.
See:
http://www.aviatorair.com/Site/Aviator_Forum.html
>From what I gather, unless you can get a common vent line completely above
the fuel level, (and we can't do this with any degree of elegance in the
701/801) you can only minimize the issue, as Cessna has, and not eliminate
it.
Interesting to note that the full tank is the one feeding the engine and
siphoning the fuel out of the emptier tank to fill the vacuum created in the
feeding tank.
-Mark
do not archive
Message 10
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| Subject: | 701 Hard Landing |
Damien,
You need to know how it hard-landed. If the the nose gear sheared you need
to be concerned about engine damage from a prop strike. I would look at
everything, but more carefully at the longerons (any bending is a no-no),
horizontal stab supports (they could have cracks), and structure around the
gear for bends or cracks. Also look at the wing attachment points on the
fus. If the noise gear was ok, probably so is the engine and mount. 701's
are very strong but its a good idea to check everything carefully.
Les
_____
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of Damien
and Kathy
Sent: Saturday, September 20, 2008 5:31 AM
Subject: Zenith701801-List: 701 Hard Landing
Group:
I am looking at a 701 that is for sale. It is a nice looking plane but 2
years ago it had a real hard landing. The landing gear had to be replaced.
What and where should I be looking for to make sure that the structure has
not been damaged ? I think that the plane has gone through 2 or 3 annuals
since then, so I am hoping that is a good sign.
Thanks.
Message 11
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| Subject: | Re: After 5 hours flight time, questions |
Jean-Paul,
Glad to.., but I don't know how to send pictures through matronics.com
_____
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of
Jean-Paul
Roy
Sent: Saturday, September 20, 2008 5:45 AM
Subject: RE: Zenith701801-List: Re: After 5 hours flight time, questions
Les, why not share it with the gang ?
Jean-Paul Roy
--- En date de : Sam, 20.9.08, Les Goldner
<lgold@quantum-associates.com> a
=E9crit :
De: Les Goldner <lgold@quantum-associates.com>
Objet: RE: Zenith701801-List: Re: After 5 hours flight time, questions
=C0: zenith701801-list@matronics.com
<lgold@quantum-associates.com>
Martin,
Glad you found the fuel starvation problem. My take on the bulkhead hole
is
that you could probably do it, possibly hinging a door, but why not put
some
reinforcement in the bulkhead first? I put a BRS chute on this bulkhead.
I
needed to strengthen it first and could show you how I did it. Write
directly to me if you want a picture of what I did.
Les
> -----Original Message-----
> From: owner-zenith701801-list-server@matronics.com
> [mailto:owner-zenith701801-list-server@matronics.com] On
> Behalf Of mwpicard
> Sent: Friday, September 19, 2008 7:56 PM
> To: zenith701801-list@matronics.com
> Subject: Zenith701801-List: Re: After 5 hours flight time, questions
>
> <mwpicard@gmail.com>
>
> At about 20 hours on the hobbs, my 701 with Rotax 912 ULS
> also exhibited partial fuel flow and I had a number of forced
> landings before we finally found the problem. It turned out
> to be a piece of rubber hose debris in the fuel supply line
> installed by ROTAX at the factory. So two cylinders were not
> getting fuel when the throttle was fully open and the rubber
> debris happened to oclude the small opening on the inlet side
> of the motor.
>
> I recommend you disassemble all the factory installed fuel
> lines and blow them out to make sure they are 100% clean. I
> am surprised this could get through the Rotax quality
> control. It definitely could be a killer. If you need more
> info contact Doug at Quality Sport Planes as he found the problem.
>
> Regarding the oil canning luggage compartment bulkhead. I
> would really like to cut a large retangular window in it and
> install a pane of latex with bolts all around. I would like
> to see all the way back into the plane. Everyone so far has
> strongly disadvised it saying that it could weaken the plane.
> I can=C2=B4t see how that flimsy oil canning bulkhead could be
> so structural....anyone?
> thanks,
> Martin Picard
> 701 en route to Australia (on a ship)
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p 5212#205212
>
>
>
>
>
>
>
> Photoshare, and much much more:
>
>
>
_____
Offrez un compte Flickr Pro =E0 vos amis et =E0 votre famille.
<http://www.flickr.com/gift/> Allez-y!
Message 12
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| Subject: | Re: fuel flow for CH701 |
Here is a Cessna Tech Note on "Uneven Fuel Feeding in Single Engine
Cessna's":
http://www.moonflight.org/Documents/Fflow.pdf
There is a lot of good stuff there. It has more detailed information about
most of this and explains how fuel is siphoned from the less full tank to
the fuller tank via the interconnecting vent line. It has the whys and
when's the fuel system was changed. Also some simple tests I had not
considered.
It answered my question about why one fuel cap is vented and the other is
not. BTW, it is not always vented but only vents as a backup after the
vacuum has built up after a primary vent failure.
I always noticed that the vent tube is located behind the strut. I thought
it might be there to reduce the chance of a bug plugging it in flight.
Turns out it is to reduce the chances of freezing. The vent tube location
and the strut fairing location (condition) are critical.
When I started this thread a few weeks ago, my primary concern was not
"unequal fuel flow". I think that can be explained by unequal tank pressure
or level due to various causes. My big concern is how "one tank completely
drains before the other tank starts to flow". The only explanation I've
seen for that so far is that an air bubble gets trapped in the line from one
tank.
Curt
Message 13
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| Subject: | Re: After 5 hours flight time, questions |
Me either Les but I hope someone chimes in on this
Jean-Paul Roy
--- En date de=C2-: Lun, 22.9.08, Les Goldner <lgold@quantum-associates.c
om> a =C3=A9crit=C2-:
De: Les Goldner <lgold@quantum-associates.com>
Objet: RE: Zenith701801-List: Re: After 5 hours flight time, questions
=C3: zenith701801-list@matronics.com
Jean-Paul,
Glad to..,=C2-but I don't know how to send pictures through matronics.com
From: owner-zenith701801-list-server@matronics.com [mailto:owner-zenith7018
01-list-server@matronics.com] On Behalf Of Jean-Paul Roy
Sent: Saturday, September 20, 2008 5:45 AM
Subject: RE: Zenith701801-List: Re: After 5 hours flight time, questions
Les, why not share it with the gang ?
Jean-Paul Roy
--- En date de=C2-: Sam, 20.9.08, Les Goldner <lgold@quantum-associates.c
om> a =C3=A9crit=C2-:
De: Les Goldner <lgold@quantum-associates.com>
Objet: RE: Zenith701801-List: Re: After 5 hours flight time, questions
=C3: zenith701801-list@matronics.com
<lgold@quantum-associates.com>
Martin,
Glad you found the fuel starvation problem. My take on the bulkhead hole is
that you could probably do it, possibly hinging a door, but why not put som
e
reinforcement in the bulkhead first? I put a BRS chute on this bulkhead. I
needed to strengthen it first and could show you how I did it. Write
directly to me if you want a picture of what I did.
Les
> -----Original Message-----
> From: owner-zenith701801-list-server@matronics.com
> [mailto:owner-zenith701801-list-server@matronics.com] On
> Behalf Of mwpicard
> Sent: Friday, September 19, 2008 7:56 PM
> To: zenith701801-list@matronics.com
> Subject: Zenith701801-List: Re: After 5 hours flight time, questions
>
> <mwpicard@gmail.com>
>
> At about 20 hours on the hobbs, my 701 with Rotax 912 ULS
> also exhibited partial fuel flow and I had a number of forced
> landings before we finally found the problem. It turned out
> to be a piece of rubber hose debris in the fuel supply line
> installed by ROTAX at the factory. So two cylinders were not
> getting fuel when the throttle was fully open and the rubber
> debris happened to oclude the small opening on the inlet side
> of the motor.
>
> I recommend you disassemble all the factory installed fuel
> lines and blow them out to make sure they are 100% clean. I
> am surprised this could get through the Rotax quality
> control. It definitely could be a killer. If you need more
> info contact Doug at Quality Sport Planes as he found the problem.
>
> Regarding the oil canning luggage compartment bulkhead. I
> would really like to cut a large retangular window in it and
> install a pane of latex with bolts all around. I would like
> to see all the way back into the plane. Everyone so far has
> strongly disadvised it saying that it could weaken the plane.
> I can=C3=82=C2=B4t see how that flimsy oil canning bulkhead could be
> so structural....anyone?
> thanks,
> Martin Picard
> 701 en route to Australia (on a ship)
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p 5212#205212
>
>
>
>
>
>
>
> Photoshare, and much much more:
>
>
>
Offrez un compte Flickr Pro =C3- vos amis et =C3- votre famille. Allez-
y!
href="http://www.matronics.com/Navigator?Zenith701801-List">http://www.ma
tronics.com/Navigator?Zenith701801-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
=0A=0A=0A Offrez un compte Flickr Pro =C3- vos amis et =C3- votre
famille.=0Ahttp://www.flickr.com/gift/
Message 14
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| Subject: | Re: After 5 hours flight time, questions |
Just send the picture as a regular attachment to your e-mail. It will
either appear as a regular attachment on a link will be added at the
bottom of the message. If the picture/file is large (more than 100,000
to 300,000 bytes or 100 to 300 kB) you might resize it.
-- Craig
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of
Jean-Paul Roy
Sent: Monday, September 22, 2008 1:48 PM
Subject: RE: Zenith701801-List: Re: After 5 hours flight time, questions
Me either Les but I hope someone chimes in on this
Jean-Paul Roy
--- En date de : Lun, 22.9.08, Les Goldner
<lgold@quantum-associates.com> a =C3=A9crit :
De: Les Goldner <lgold@quantum-associates.com>
Objet: RE: Zenith701801-List: Re: After 5 hours flight time, questions
=C3: zenith701801-list@matronics.com
Jean-Paul,
Glad to.., but I don't know how to send pictures through matronics.com
_____
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of
Jean-Paul Roy
Sent: Saturday, September 20, 2008 5:45 AM
Subject: RE: Zenith701801-List: Re: After 5 hours flight time, questions
Les, why not share it with the gang ?
Jean-Paul Roy
--- En date de : Sam, 20.9.08, Les Goldner
<lgold@quantum-associates.com> a =C3=A9crit :
De: Les Goldner <lgold@quantum-associates.com>
Objet: RE: Zenith701801-List: Re: After 5 hours flight time, questions
=C3: zenith701801-list@matronics.com
<lgold@quantum-associates.com>
Martin,
Glad you found the fuel starvation problem. My take on the bulkhead hole
is
that you could probably do it, possibly hinging a door, but why not put
some
reinforcement in the bulkhead first? I put a BRS chute on this bulkhead.
I
needed to strengthen it first and could show you how I did it. Write
directly to me if you want a picture of what I did.
Les
> -----Original Message-----
> From: owner-zenith701801-list-server@matronics.com
> [mailto:owner-zenith701801-list-server@matronics.com] On
> Behalf Of mwpicard
> Sent: Friday, September 19, 2008 7:56 PM
> To: zenith701801-list@matronics.com
> Subject: Zenith701801-List: Re: After 5 hours flight time, questions
>
> <mwpicard@gmail.com>
>
> At about 20 hours on the hobbs, my 701 with Rotax 912 ULS
> also exhibited partial fuel flow and I had a number of forced
> landings before we finally found the problem. It turned out
> to be a piece of rubber hose debris in the fuel supply line
> installed by ROTAX at the factory. So two cylinders were not
> getting fuel when the throttle was fully open and the rubber
> debris happened to oclude the small opening on the inlet side
> of the motor.
>
> I recommend you disassemble all the factory installed fuel
> lines and blow them out to make sure they are 100% clean. I
> am surprised this could get through the Rotax quality
> control. It definitely could be a killer. If you need more
> info contact Doug at Quality Sport Planes as he found the problem.
>
> Regarding the oil canning luggage compartment bulkhead. I
> would really like to cut a large retangular window in it and
> install a pane of latex with bolts all around. I would like
> to see all the way back into the plane. Everyone so far has
> strongly disadvised it saying that it could weaken the plane.
> I can=C3=82=C2=B4t see how that flimsy oil canning bulkhead could be
> so structural....anyone?
> thanks,
> Martin Picard
> 701 en route to Australia (on a ship)
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p 5212#205212
>
>
>
>
>
>
>
> Photoshare, and much much more:
>
>
>
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| Subject: | Re: After 5 hours flight time, questions |
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Message 16
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| Subject: | Re: After 5 hours flight time, questions |
The file and photo share is fine (but takes time) if you want the item
to stay around forever. But for one-offs you can also just attach
=9Creasonable=9D sized files to your posts.
-- Craig
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of
Randall J. Hebert
Sent: Monday, September 22, 2008 2:43 PM
Subject: RE: Zenith701801-List: Re: After 5 hours flight time, questions
Do Not Archive
This is from the list FAQ
There is more there but this should help get you started
****************************
*** File and Photo Share ***
****************************
With the Matronics Email List File and Photo Share you can share
pictures
and other data with members of the List without having to forward a
copy of it to everyone. To share your Files and Photos, simply email
them to:
pictures@matronics.com
!! ==> Please including the following information with each
submission:
1) Email Lists that they are related to.
2) Your Full Name.
3) Your Email Address.
4) One line Subject description.
5) Multi-line, multi-paragraph description of topic.
6-x) One-line Description of each photo or file
Randall J Hebert
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of Craig
Payne
Sent: Monday, September 22, 2008 3:14 PM
Subject: RE: Zenith701801-List: Re: After 5 hours flight time, questions
Just send the picture as a regular attachment to your e-mail. It will
either appear as a regular attachment on a link will be added at the
bottom of the message. If the picture/file is large (more than 100,000
to 300,000 bytes or 100 to 300 kB) you might resize it.
~,
_____
g=D3=93
Message 17
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| Subject: | Re: After 5 hours flight time, questions |
Thanks guys for the advice regarding sending pics through matronics.
I have attached two pictures taken during the construction of N67MG that
show the reinforcement to the baggage compartment back wall used to
support my BRS chute. The reinforcement consists of some big gussets
with Ls on their sides, and horizontal Ls top and bottom. The heavy
vertical Ls close to the center hold the chute.
Also, see the full-height cargo door on the pilot side of the
compartment in the pictures. I can get my 20# folding bike through this
door and have cargo nets forward of the door so nothing heavy falls to
the back.
Rgds,
Les
_____
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of Craig
Payne
Sent: Monday, September 22, 2008 1:57 PM
Subject: RE: Zenith701801-List: Re: After 5 hours flight time, questions
The file and photo share is fine (but takes time) if you want the item
to stay around forever. But for one-offs you can also just attach
=9Creasonable=9D sized files to your posts.
-- Craig
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of
Randall J. Hebert
Sent: Monday, September 22, 2008 2:43 PM
Subject: RE: Zenith701801-List: Re: After 5 hours flight time, questions
Do Not Archive
This is from the list FAQ
There is more there but this should help get you started
****************************
*** File and Photo Share ***
****************************
With the Matronics Email List File and Photo Share you can share
pictures
and other data with members of the List without having to forward a
copy of it to everyone. To share your Files and Photos, simply email
them to:
pictures@matronics.com
!! ==> Please including the following information with each
submission:
1) Email Lists that they are related to.
2) Your Full Name.
3) Your Email Address.
4) One line Subject description.
5) Multi-line, multi-paragraph description of topic.
6-x) One-line Description of each photo or file
Randall J Hebert
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of Craig
Payne
Sent: Monday, September 22, 2008 3:14 PM
Subject: RE: Zenith701801-List: Re: After 5 hours flight time, questions
Just send the picture as a regular attachment to your e-mail. It will
either appear as a regular attachment on a link will be added at the
bottom of the message. If the picture/file is large (more than 100,000
to 300,000 bytes or 100 to 300 kB) you might resize it.
~,
_____
g=D3=93
Message 18
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| Subject: | Re: fuel flow for CH701 |
Bob Kissell, the originator of this thread, accidentally sent this to just me instead
of the whole list, so I'll cut-and-post it here for everyone to read.
Kudos to Bob for taking the experiment to the next step to answer the question
we probably all have regarding a completely full tank and a completely dry tank.
>From Bob:
Thanks for the reviews since I posted my "study". Since then I have flown a cross-country
with snorkel vents installed. The flight took 1.25 hours and I started
with nearly full tanks. I cruised at 80 mph IAS and when I arrived at my destination
the fuel gauges were at nearly identical positions. A major improvement
from the original Zenith caps. On the return trip I filled one tank to the
brim and the other to a lesser amount but nearly full. When I arrived after
a 1.5 hour cruise (head wind this time) I measured the fuel depth of both tanks
and had about a 1/3 inch delta. SInce I started with an imbalanced fuel the
higher tank must have siphoned (flowed) to the lower tank. I am very happy with
these results.
For you guys wishing to have snorkel vents it is easy to modify the Zenith caps.
I purchased some steel brake line stock with fittings and flares on both ends.
I drilled the center of each cap with a hole to match the diameter of the line.
The brake line was cut and the threaded fitting removed and then bent with
a tubing bender to create the right angle, two were made. The tube was then
inserted into the hole and aligned so that the flared end faced forward after
the cap is locked into position on the tank. Important..the cap position from
tank to tank varies so you must trial fit these vents. Once the vent position
is determined I brazed the tube to the cap with a MAP gas torch and brass brazing
rods. The gasket was not damaged by the heat, but don't push it. The caps
were then cleaned and painted. Total cost was about 5$ for the brake line material,
if you have the rest of the tools. Also don't forget to fill the original
vents along the cap edge, I used epoxy.
I plan to do an empty tank test soon and will report the results. I will drain
one tank and clamp the fuel line so no fuel can flow into the empty one from the
tank with fuel and no air can possibly enter the system if drawn by the engine.
I will take off on one tank with half fuel and once over a very large empty
field at high altitude remove the clamp. This will duplicate the case of one
tank running dry with plenty of fuel in the other. Then orbit around for 30
minutes or so and see what happens. If the engine falters then I will replace
the clamp, turn on boost and restart or land in the big field and then restart.
I am fairly certain though that the engine will continue to run and I will land
will fuel in the empty tank. Wish me luck though...
Bob Kissell N701UB Dayton, Ohio
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 5641#205641
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