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jridgway
Joined: 12 Dec 2008
Posts: 64
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 Posted: Sun Dec 21, 2008 3:34 pm Post subject: Скача& |
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Выезд в область моя мечта стать стройной девушкой, Свингеры швеции 1 kla все телки,
Светлана пожарская франсиско франко и его время за деньги в зеленодольске, видела как я брал в рот эротика под юбкой смотреть онлайн - конь с хуем сосут девченки.
У меня на сигнализации можно выбирать режим постановки на автозапуск. Можно как цу Вас при повороте ключа, чтоб сразу вставала и не глохла до тех пор пока на сигналку не поставиш (функция по умолчанию.
Ну все понял. Это я сильно подтягивал гайки на штоках стоек. НАверное пружины наместо вставали. щас попробовал покрутить. все отлично. руль стал легко крутиться. Зер гут вообщем.
Шоу без регистрации и Кинотеатр в поисках золотого фаллоса определить лесби, голый орландо блум фото - голые бритые писи крупным планом - руские лолиты,
сконём санта. выключение в заданое время компьютера елена чебатуркин, Певица максим минет
пособие для лесбиянок, казантип все танцуют босиком на песке, парнуха з школьницами видео - купить беротек для ингаляций в киеве, индивидуалки проспекта ветеранов playboy толстых волосатых,
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Last edited by jridgway on Wed Sep 08, 2010 11:17 am; edited 5 times in total |
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MDKitfox(at)aol.com
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| Posted: Sun Dec 21, 2008 7:42 pm Post subject: water overflow bottle height |
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Jack,
Which engine are you using? Each model may be different.
On my 912ULS, the 10 inch measurement you cite is accurate, but the formula you wrote is not for volume. The volume would be volume = [img]cid:F910CB18-BB15-446F-B143-4BBD01C69D18(at)launchmodem.com[/img] r2 h. Where r is the radius of the hose and h is the length (height) of the hose. This may be air or fluid depending on your installation and how you fill the reservoir and overflow container. If the hose has air, it will eventually be released out the hole in the cap of the overflow bottle. I don't think there's a problem with that small amount of air anyway, since it can't back flow into the reservoir due to the pressure valve in the cap. When the engine heats up, the air in the hose will expand and some of it will bubble out the breather hole in the cap and be replaced with the fluid in the overflow container. If the pressure gets to great in the system, the cap valve releases and allows coolant to flow into the overflow container. Thus the air is purged out anyway. Just be sure you have sufficient coolant in the overflow container so air is not sucked into the system when it cools down.
Hope this helps.
Rick Weiss
N39RW Series V Speedster, 912ULS
SkyStar S/N 1
Port Orange, FL
On Dec 21, 2008, at 6:34 PM, jridgway wrote:
| Quote: | --> Kitfox-List message posted by: "jridgway" <jridgway(at)academicplanet.com (jridgway(at)academicplanet.com)>
I understand from the ROTAX documentation that the water overflow bottle can be up to 10 inches below the radiator cap. Won't this allow the air (volume=10 inches x inner hose diameter) in the overflow line enter the engine before it actually brings up any water? Is this small amount of air OK? Does this air get purged out with water during the cooling recovery cycle? I am not using a separate expansion tank.
Thanks..Jack
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Roger Lee
Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.
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| Posted: Sun Dec 21, 2008 8:01 pm Post subject: Re: water overflow bottle height |
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The hose comes off the bottom of the tank so it will only draw liquid. You should not have an air issue.
An example would be when you take the cap off the coolant expansion tank air can get in and the fluid level is not always at the top. It has an air space at times if the level is down slightly.
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Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
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Jim Shumaker
Joined: 09 Jan 2006
Posts: 106
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| Posted: Sun Dec 21, 2008 8:47 pm Post subject: water overflow bottle height |
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Jack
Your overflow bottle is a "seperate expansion tank."
Jim Shumaker
do not archive
From: jridgway <jridgway(at)academicplanet.com>
To: kitfox-list(at)matronics.com
Sent: Sunday, December 21, 2008 3:34:57 PM
Subject: water overflow bottle height
--> Kitfox-List message posted by: "jridgway" <jridgway(at)academicplanet.com (jridgway(at)academicplanet.com)>
I understand from the ROTAX documentation that the water overflow bottle can be up to 10 inches below the radiator cap. Won't this allow the air (volume=10 inches x inner hose diameter) in the overflow line enter the engine before it actually brings up any water? Is this small amount of air OK? Does this air get purged out with water during the cooling recovery cycle? I am not using a separate [quote][b]
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Mon Dec 22, 2008 7:17 am Post subject: water overflow bottle height |
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Being the bottle should be open at the top to ambient pressure it should be a few inches below the rad cap. The really important item is the hose going to the overflow bottle should come from the low pressure side of the cap. When I got my plane first the builder somehow or the other put the overflow via a “T” on the high pressure side of the cap... I noticed that before I even started the engine. No wonder the builder of the plane complained to me about having cooling problems with the engine.
Noel
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Weiss Richard
Sent: Monday, December 22, 2008 12:11 AM
To: kitfox-list(at)matronics.com
Subject: Re: water overflow bottle height
Jack,
Which engine are you using? Each model may be different.
On my 912ULS, the 10 inch measurement you cite is accurate, but the formula you wrote is not for volume. The volume would be volume = [img]cid:image001.gif(at)01C9642A.71356AE0[/img] r2 h. Where r is the radius of the hose and h is the length (height) of the hose. This may be air or fluid depending on your installation and how you fill the reservoir and overflow container. If the hose has air, it will eventually be released out the hole in the cap of the overflow bottle. I don't think there's a problem with that small amount of air anyway, since it can't back flow into the reservoir due to the pressure valve in the cap. When the engine heats up, the air in the hose will expand and some of it will bubble out the breather hole in the cap and be replaced with the fluid in the overflow container. If the pressure gets to great in the system, the cap valve releases and allows coolant to flow into the overflow container. Thus the air is purged out anyway. Just be sure you have sufficient coolant in the overflow container so air is not sucked into the system when it cools down.
Hope this helps.
Rick Weiss
N39RW Series V Speedster, 912ULS
SkyStar S/N 1
Port Orange, FL
On Dec 21, 2008, at 6:34 PM, jridgway wrote:
--> Kitfox-List message posted by: "jridgway" <jridgway(at)academicplanet.com (jridgway(at)academicplanet.com)>
I understand from the ROTAX documentation that the water overflow bottle can be up to 10 inches below the radiator cap. Won't this allow the air (volume=10 inches x inner hose diameter) in the overflow line enter the engine before it actually brings up any water? Is this small amount of air OK? Does this air get purged out with water during the cooling recovery cycle? I am not using a separate expansion tank.
Thanks..Jack
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=220456#220456
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Mon Dec 22, 2008 7:31 am Post subject: water overflow bottle height |
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The whole idea of that bottle is that you can run the cooling system without
any air in the system at all.
As the fluid warms up and expands it gets pushed through the pressure cap
and then flows through the line to the overflow bottle... The overflow
bottle should have around three times the volume as the greatest expansion
of all the fluid in the pressurized system.
As the fluid cools down, like after a flight, the contracting coolant will
actually draw coolant from the bottle through the pressure cap, designed to
keep a specific pressure in the system, to refill the high pressure side of
the cooling system. For that reason the bottle should never be either empty
or full. Most bottles have a range from 1/3 to 2/3 full as the operating
range. The bottle should be open to ambient pressure at the top.
Some systems as mentioned have the connecting tube on the bottom of the
reservoir, others use a tube that extends through the cap to the bottom of
the reservoir. My plane has a spray nine bottle with a straw like tube that
extends to the bottom of the bottle. Air can easily enter the bottle around
where the tube passes through the cap.
Noel
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Noel Loveys
Kitfox III-A
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jridgway
Joined: 12 Dec 2008
Posts: 64
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| Posted: Mon Dec 22, 2008 8:05 am Post subject: Re: water overflow bottle height |
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Thanks for the feedback.
I understand the basics.
I was just wondering when the engine COOLs and draws the reserve water back up, it must also first draw the air in the line back in the engine. Does this 'little bid of air' get purged back out as the engine warms up during the next start up/running cycle? Can this little bit of air get trapped in the engine? New to ROTAX engines..This must happen with autos also..my truck reserve tanks is about 6 inches below my radiator cap also..thanks all..
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Mon Dec 22, 2008 8:59 am Post subject: water overflow bottle height |
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The end of the tiber going to the overflow bottle should be under the level
of the coolant in the bottle. The first time the engine is started all the
gas bubbles are pushed through the tube and bubble out into the reservoir..
that way when the engine cools there is no bubbles to travel back into the
high pressure side of the cap.
This is another reason to have the reservoir below the cap... when you fill
the rad a bit of overflow will drain into the reservoir bringing it to the
proper cold level.
Noel
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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jridgway
Joined: 12 Dec 2008
Posts: 64
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| Posted: Tue Dec 23, 2008 3:25 pm Post subject: Re: water overflow bottle height |
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After the first complete heat/cool cycle should the return line always have water in it? If so, how is this water held there (slight vacuum?)? I would think it would eventually drain back down into the recovery bottle since it is 6 inches below the radiator cap.
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Paul A. Franz, P.E.
Joined: 02 Dec 2008
Posts: 280
Location: Bellevue WA
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| Posted: Tue Dec 23, 2008 4:08 pm Post subject: water overflow bottle height |
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On Tue, December 23, 2008 3:25 pm, jridgway wrote:
| Quote: |
After the first complete heat/cool cycle should the return line always have water in
it? If so, how is this water held there (slight vacuum?)? I would think it would
eventually drain back down into the recovery bottle since it is 6 inches below the
radiator cap.
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It's a syphon. Overflow tube is flooded so unless there is a leak in the system, no
air will get in and the overflow tube remains full.
It might take a few warm up and cool down cycles to complete void all the entrained
air. Should be less and less each time. There is some expansion and contraction going
on while the engine is running too since you are changing power settings and the water
temperature in the radiator is changing temperature so it is expanding and contracting
with changes in power setting. Since the pressure in the expansion tank is atmospheric
at least at the upper surface, the entrained air will escape there faster than it will
under pressure in the circulating part of the cooling system.
--
Paul A. Franz
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
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_________________
Paul A. Franz, P.E.
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
425.440.9505 Office |
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Tue Dec 23, 2008 5:34 pm Post subject: water overflow bottle height |
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No vacuum... the cooling system on the high pressure side of the rad cap is
closed so like when you put a finger over a straw nothing will come out.
Remember also the bottom of the straw, in this instance, is always under the
level of the coolant so there should be no way for any air to get in there.
Noel
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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jridgway
Joined: 12 Dec 2008
Posts: 64
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| Posted: Thu Dec 25, 2008 7:59 pm Post subject: Re: water overflow bottle height |
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thanks all....
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