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Hydr-Lock--Kimball Valve

 
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john(at)johnalber.com
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PostPosted: Wed Oct 03, 2007 5:09 am    Post subject: Hydr-Lock--Kimball Valve Reply with quote
0I also have a 50 that used to--and used to is the operative phrase here--seep oil into the cylinders and out the stacks and oil drain. Oil seeped through the oil pump at a significant rate when the engine was shut down. After much consulting with Dennis, and Carl and Jill, I determined that the check valve and pressure relief were not the culprits. Some oil pumps (maybe most) have tolerances that simply permit seepage through the pump. My old 52 was the same way.

No more. I put in the Kimball shutoff valve and oil scavenge pump. As a consequence I leak no oil and my oil consumption has gone down to almost nothing (if I keep the oil level near the min mark). I do get a satisfying little puff of smoke on starting, but nothing like it used to be.You can now stand behind the aircraft on starting and your white shirt will stay pristine.

I have three safety checks. First, the valve has a starter interrupt. Second, I flag the shutoff T handle in the cockpit and tie the flag to the stick. Hard to miss that way. Finally, I put the T handle close enough to the primer handle so that with the T handle in the off position it is difficult to pump the primer. The shutoff valve itself is positioned on the engine so you can reach in under the cowling and hand check its position, and I recommend that as part of the walk-around.

The one additional safety check I am considering is a return spring to assure that the valve will not vibrate shut should the actuator cable become detached in some way.

Count me as one very satisfied customer.

John Alber

Quote:
ime: 08:00:48 AM PST USFrom: DaBear <[url=Compose?To=dabear(at)damned.org&YY=63302&y5beta=yes&y5beta=yes&order=down&sort=date&pos=0]dabear(at)damned.org[/url]>Subject: Re: hydro lockSo I'm going to weight in here. I've had the oil shut off valve (with
starter cut-off) and oil scavenge pump for a while. I got it from Kimbal's in FL. I absolutely love it, with no (zero), nada, zip, reservations. I have to admit that I have tried to start it with the valve in the off position, it doesn't start. With it in place, I have had almost no oil in the system at all and if there is, there is not enough to hydro lock the engine. The only thing I would suggest is that you drain the engine with electric pump after shut down. Takes about 45-60 seconds. Then after a few min, drain the rest of the oil again. I'll usually do the second drain pump for 10-15 seconds after I've started to button up the airplane. This lets some of the oil drain down to the extraction point so you get all of it.Expensive, well, you decide. But I like not worrying about hydro lock. I like having a clean hanger floor. I like not leaving much of an oil slick at clinics.
The only danger is that:1. I could start it with it in the off position (not going to happen with the cut-off). 2. I could shut off the oil in flight (That should never happen)You make the call.DaBearBitterlich, Mark G CIV Det Cherry Point, MALS-14 64E wrote:>> Read Brian Lloyd's reply to this one for the best of advice, but let me> just add a few things: >> 1. I own a YAK-50 with intake drains, and due to a slightly leaky ball> check valve in my oil pump I get oil into the cylinders very quickly.> In a month of no flying I can actually lose up to 3 GALLONS of oil. If> I fly every two weeks or so, that never happens. >> 2. Each person has his or her own method for getting oil out of the> cylinders, Brian's method being the most safe obviously. >> 3. Probably the best method I saw of everyone listed was on
Sergei> Boriak's SU-31 (before it crashed). Sergei was sick and tired of oil in> the cylinders and having to pull it through EVERY time. >> A. He spent a huge amount of $$$ and had new pistons put in with gapless> rings. Much more was done here than I will list, but the rings made a> big difference. >> B. The best trick was that he installed an OIL VALVE in the oil supply> line to the engine. Yes, there is an obvious danger in doing that. He> put in the typical safety steps with starter inhibitors, etc. etc. And> I am sure, a lot of people will say it is still too dangerous. So if> you feel that way, good for you. Keep yanking the plugs. On the flip> side, shutting off the oil supply pretty much puts an END to this> problem. >> C. The last step was to install an engine sump line going to an>
electrical pump. After landing and shutting the engine down, you run> the pump and the oil from the sump is pumped back into the main oil> tank. >> You combine all three and you have a very dry engine, no oil on the> ground, and no need to pull it through, and no chance of hydrostatic> locks. >> I'm going to go with the main tank oil shut off valve, with push pull> control from the cockpit. >> Mark > N50YK>

John Alber
john(at)johnalber.com
314-259-2144 [quote][b]

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F16ftrplt(at)aol.com
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PostPosted: Wed Oct 03, 2007 3:40 pm    Post subject: Hydr-Lock--Kimball Valve Reply with quote
Does this system work on the Housai engine?
Med

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dabear(at)damned.org
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PostPosted: Thu Oct 04, 2007 3:55 am    Post subject: Hydr-Lock--Kimball Valve Reply with quote
The Chinese engine and system, in fact the whole airplane is so
different, there is no chance of it working. (Sarcasm)

Yes, I believe it is plug and play on the Housai as well.

Dabear

F16ftrplt(at)aol.com wrote:
Quote:
Does this system work on the Housai engine?
Med

------------------------------------------------------------------------
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KJKimball(at)aol.com
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PostPosted: Thu Oct 04, 2007 5:26 am    Post subject: Hydr-Lock--Kimball Valve Reply with quote
Yes, our oil shut off valve and scavenge clean kit systems can and have been installed on the CJ6. Installation on Yak, CJ, Sukhoi, and other homebuilt airplanes are all possible even though the system was originally developed for our Pitts Model 12 kit airplane.

Sincerely,

Kevin Kimball
Jim Kimball Enterprises, Inc.
www.jimkimballenterprises.com


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cjpilot710(at)aol.com
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PostPosted: Thu Oct 04, 2007 6:13 am    Post subject: Hydr-Lock--Kimball Valve Reply with quote
In a message dated 10/4/2007 7:56:32 A.M. Eastern Daylight Time, dabear(at)damned.org writes:

I put people who say the CJ-6 is a copy of a Yak into the same category as those who think every airplane is a "Piper Cub" or a "747". (Sarcasm) Smile

Pappy



Quote:
--> Yak-List message posted by: DaBear <dabear(at)damned.org>

The Chinese engine and system, in fact the whole airplane is so
different, there is no chance of it working. (Sarcasm)

Yes, I believe it is plug and play on the Housai as well.

Dabear

F16ftrplt(at)aol.com wrote:
Quote:
Does this system work on the Housai engine?
Med




Make AOL Your Homepage.
[quote][b]

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