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Dick Maddux
Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl
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 Posted: Mon Jul 14, 2008 4:04 am Post subject: Hydraulic LockHydraulic Lock |
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Lowell,
I am going on another trip for a few weeks and my model 4 will be idle. I tried your method of letting the oil cool prior to burping the tank so that the siphoning would occur at a slower rate.It does help. It drops about 3/8 inch a day on the dipstick. In a two week period it will be off the bottom of the dipstick. My question is," Can it drop so far as to induce air into the system ?" If the oil goes below the end of the oil pickup line I think it could happen. Not a good thing.
I haven't had a hydraulic lock yet but expect it at some time.
Dick Maddux
Fox 4-1200
912UL
Pensacola,Fl
Get the scoop on last night's hottest shows and the live music scene in your area - Check out TourTracker.com!
[quote][b]
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lcfitt(at)sbcglobal.net
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| Posted: Mon Jul 14, 2008 5:48 am Post subject: Hydraulic LockHydraulic Lock |
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Dick,
That is in interesting question that I have never considered. I have flown
lots of times after having burped the crank case after not seeing oil on the
dipstick. After the engine tightened up and it had less bypass passed the
rings, it would take over a hundred blades to get the burp. For some
reason, I never worried about air in the system, even though I was well
aware of Rotax's recommendation on "venting" after an oil change.
I don't have a any idea if it is a problem, but it is certainly conceivable
to introduce air at least into the pick up tube.
Lowell
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clint_bazzill(at)hotmail.
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| Posted: Mon Jul 14, 2008 7:27 am Post subject: Hydraulic LockHydraulic Lock |
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It would be nice to have a air fitting on the crankcase and just put in a little compressed air.
About the turning the engine by hand C over one hundred for me also. It seems if you can turn it by hand C why not check to make sure no oil is in the cylinders and crank engine with ignition off. Same effect only a hundred times easier and a lot faster.
Clint
[quote] From: lcfitt(at)sbcglobal.net
To: kitfox-list(at)matronics.com
Subject: Re: Re: Hydraulic LockHydraulic Lock
Date: Mon C 14 Jul 2008 06:42:57 -0700
--> Kitfox-List message posted by: "Lowell Fitt" <lcfitt(at)sbcglobal.net>
Dick C
That is in interesting question that I have never considered. I have flown
lots of times after having burped the crank case after not seeing oil on the
dipstick. After the engine tightened up and it had less bypass passed the
rings C it would take over a hundred blades to get the burp. For some
reason C I never worried about air in the system C even though I was well
aware of Rotax's recommendation on "venting" after an oil change.
I don't have a any idea if it is a problem C but it is certainly conceivable
to introduce air at least into the pick up tube.
Lowell
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